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WO2008004540A1 - Ampoule, ampoule avec réflecteur et dispositif d'éclairage - Google Patents

Ampoule, ampoule avec réflecteur et dispositif d'éclairage Download PDF

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Publication number
WO2008004540A1
WO2008004540A1 PCT/JP2007/063284 JP2007063284W WO2008004540A1 WO 2008004540 A1 WO2008004540 A1 WO 2008004540A1 JP 2007063284 W JP2007063284 W JP 2007063284W WO 2008004540 A1 WO2008004540 A1 WO 2008004540A1
Authority
WO
WIPO (PCT)
Prior art keywords
light emitting
axis
point
coil
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2007/063284
Other languages
English (en)
Japanese (ja)
Inventor
Shinya Kawagoe
Naotaka Hashimoto
Taku Ikeda
Toshiyasu Kojima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2006183067A external-priority patent/JP2008016206A/ja
Priority claimed from JP2007101628A external-priority patent/JP4173524B2/ja
Application filed by Panasonic Corp, Matsushita Electric Industrial Co Ltd filed Critical Panasonic Corp
Priority to CN200780025347XA priority Critical patent/CN101484972B/zh
Publication of WO2008004540A1 publication Critical patent/WO2008004540A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/02—Incandescent bodies
    • H01K1/14—Incandescent bodies characterised by the shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/18—Mountings or supports for the incandescent body

Definitions

  • Tube Tube, tube with reflector, and lighting device
  • the present invention relates to a tube, a tube with a reflector, and an illumination device, and more particularly to a technique for improving a filament body in a tube.
  • a halogen bulb with a reflector which is a kind of tube with a reflector, is a combination of a reflector having a concave reflecting surface and a halogen bulb. For example, for a spot illumination in a store or the like in use.
  • the Rogen bulb has a configuration in which a filament body is housed in a hermetically sealed bulb.
  • a halogen bulb is used in combination with a reflecting mirror, the condensing efficiency can be improved by making the filament body as compact as possible and concentrating the light emitting region at the focal position of the reflecting mirror as much as possible.
  • reducing the light emitting region, particularly in the optical axis direction of the reflecting mirror is effective in improving the light collection efficiency.
  • the filament body is The wire diameter of the composed tungsten wire is substantially determined. Therefore, for example, it is difficult to achieve a compact filament body by simply shortening the length of the tungsten wire.
  • Patent Document 1 discloses a halogen light bulb using a triple-strand coil as a filament body for further compactness. According to this, if the lengths of the tungsten wires are the same, the length of the entire coil in the optical axis direction of the reflecting mirror can be shortened, thereby improving the light collection efficiency.
  • Patent Document 2 describes that three or four single coils as a whole are light from the reflector. There is disclosed a structure in which each single coil is arranged in parallel to the optical axis of a reflecting mirror so as to be symmetric with respect to the axis. This shortens the length in the optical axis direction compared to the case where three or four single coils are produced with one single coil, which improves the light collection efficiency. Become. In addition, since each coil is single, the problems caused by the vibration are reduced.
  • Patent Document 3 discloses a halogen light bulb having a structure in which a filament body is composed of 4 to 6 single coils, and one of them is arranged at a position including the optical axis of a reflecting mirror. It is disclosed. This is because it is generally considered that there is a large difference in the illuminance obtained when the coil (that is, the light emitting portion) is present at the optical axis position.
  • the inventors of the present application arranged one of the plurality of single coils at a position including the optical axis of the reflecting mirror, and placed the remaining single coil in a direction intersecting the optical axis.
  • Filament bodies were made by arranging the single coils with a space between them and winding each single wire into a flat cylindrical shape (hereinafter referred to as “flat coil”).
  • the wire length per turn compared to a conventional single coil in which the wire is wound in a cylindrical shape (when the short axis length of the flat tube is equal to the diameter of the cylinder), the wire length per turn Therefore, if the strand length of the tungsten wire is the same, the coil length can be shortened, thereby further shortening the length of the filament body in the optical axis direction and further improving the light collection efficiency. Will be up.
  • the length in the direction intersecting the optical axis of the reflecting mirror is longer than that of the coil wound in a cylindrical shape, but in order to improve the light collection efficiency, it intersects with the optical axis.
  • the effect of shortening in the direction of the optical axis is greater than in the direction of making, so no problem.
  • the inventors of the present application can arrange a plurality of coils symmetrically with respect to the optical axis, and at the same time, arrange the one coil among them as the minimum number that can be arranged at a position including the optical axis.
  • a halogen bulb having a filament body that also has a flat coil force is widely used, and it is widely used, and a light collecting property equivalent to that of a halogen bulb having a double-coil coil filament body (hereinafter referred to as a “popular type tube”). Succeeded in getting.
  • Patent Document 2 Japanese Patent Publication No. 6-510881
  • Patent Document 3 Japanese Patent Laid-Open No. 2002-63869
  • the distance between the coils may be increased, but if this is done, the light condensing performance may be lowered, and satisfactory performance may not be obtained.
  • two light emitting portions are arranged at positions symmetrical with respect to the optical axis and have the two light emitting portions.
  • the present invention eliminates the bimodality in the light distribution curve while taking a simple configuration when the filament body is configured by two light emitting sections having a flat coil shape. It is a first object of the present invention to provide a tube with a spotlight that does not darken the center, a tube with a reflector having such a tube, and an illumination device.
  • the second object of the present invention is to achieve at least the same life and condensing performance as a popular type of tube with a filament tube composed of two flat coils (light emitting portions), and It is an object of the present invention to provide a reflector-equipped tube having such a tube and an illumination device.
  • the tube according to the first aspect is a tube used in a reflecting mirror having a concave reflecting surface, and is hermetically sealed. And a filament body provided in the bulb, wherein the filament body is configured to emit light in an energized state in two places that are flattened and one of the light emission places is the first
  • the second light emitting part is used as the light emitting part and the other light emitting part
  • the first light emitting part and the second light emitting part have different distances from the central axis of the bulb.
  • the light emitting unit and the second light emitting unit are arranged and featured.
  • each coil axis is arranged in such a manner that it is substantially parallel to the central axis.
  • the first light emitting unit has a coil axis that is substantially parallel to the central axis, and the second light emitting unit is arranged in a posture in which the coil axis is inclined with respect to the central axis.
  • the first light emitting unit and the second light emitting unit are arranged in such a direction that the ends of the light emitting units on the light irradiation opening side of the reflecting mirror approach each other from the posture in which the coil axis is parallel to the central axis. It is arranged in a tilted state!
  • first light emitting unit and the second light emitting unit are arranged such that their coil axes are parallel to the central axis. From the above, the light emitting portions of the light emitting portions are arranged in an inclined state in such a manner that the ends opposite to the light irradiation openings of the reflecting mirrors are close to each other.
  • one of the first light emitting unit and the second light emitting unit is arranged at a position including the central axis.
  • the tube according to the second aspect is a tube used in a reflecting mirror having a concave reflecting surface, and is a hermetically sealed valve. And a filament body provided in the bulb, and the filament body has a direction in which two light-emitting portions each having a single coil shape that is wound flat are perpendicular to the optical axis of the reflector. Each coil axis is substantially parallel to the optical axis and is opposed to each other in a posture in which the major axis directions are substantially parallel to each other.
  • the minor axis is In the case of 0.35 [mm], the combination of the interval and the flatness ratio is any of the following (0, GO It is characterized by being stipulated in the relationship.
  • the point G 1 (0.5,6), the point G2 (0.5,10), the point G3 represented by the (X, y) coordinates (4.5, 10), point G4 (4.5, 3), point G5 (l, 3), point G 6 (1, 6), point G1 (0.5, 6) in the area surrounded by the line segment It is set to a combination of the X coordinate value and the y coordinate value (including on the line segment).
  • a tube according to the second aspect is a concave reflecting surface. And is a tube used by being incorporated in a reflector having a medium beam opening, and includes a bulb hermetically sealed and a filament body provided in the bulb, the filament The body has two light emitting element forces that are wound in a flat shape and are spaced apart in a direction perpendicular to the optical axis of the reflecting mirror, and each coil axis is substantially parallel to the optical axis. And in the Xy orthogonal coordinate system, the interval [mm] between the light emitting portions is taken on the X axis, and the inside of the light emitting portion is arranged.
  • the distance and the minor axis Is a point F1 (0.2, 0.3), a point F2 (0.2, 1.0), a point F3 (3.5, 1.0), a point F4 (3.5, 0.35), point F5 (3, 0.3), and point F1 (0.2, 0.3) are connected by the line segment in the area enclosed by the line segment (including above the line segment). It is characterized by being set to a combination.
  • the tube according to the second aspect is a tube used by being incorporated in a reflecting mirror having a concave reflecting surface, and is hermetically sealed.
  • the filament body is provided with a stopped valve and a filament body provided in the noble, and the filament body has two light emitting portions formed in a single coil shape that is wound flatly in the optical axis direction of the reflector.
  • the distance in the direction orthogonal to the optical axis becomes narrower and the major axis directions are arranged in parallel with each other in an attitude that is substantially parallel to each other.
  • This is set to the combination of the X coordinate value and the y coordinate value in the area enclosed by the line segment (including the area above the line segment).
  • the influence on the shape of the light distribution curve of the light-emitting portion related to the light emission center closer to the central axis of the bulb is applied to the light emission center farther than the central axial force.
  • FIG. 1 is a partially cutaway view showing a schematic configuration of a lighting apparatus according to Embodiment 1.
  • FIG. 2 is a diagram showing a halogen bulb constituting the illuminating device.
  • FIG. 3 is a perspective view showing a support structure of a filament body in the halogen bulb.
  • FIG. 6 is a schematic diagram showing a plan view (upper part) and a front view (lower part) of the filament coil.
  • FIG. 7 is a schematic view showing an example of a filament body in Embodiment 1 with a plan view (upper part) and a front view (lower part).
  • FIG. 8 is a schematic diagram showing an example of a filament body in Embodiment 1 with a plan view (upper part) and a front view (lower part).
  • FIG. 16 is a schematic diagram showing an example of a filament body in Embodiment 2 with a plan view (upper part) and a front view (lower part).
  • FIG. 17 is a schematic diagram showing an example of a filament body in Embodiment 2 with a plan view (upper part) and a front view (lower part).
  • FIG. 19 is a perspective view showing a state in which a filament body is supported by the support structure.
  • 20 It is a schematic diagram showing a plan view (upper part) and a front view (lower part) of the filament body.
  • FIG. 22 is a schematic diagram showing a plan view (upper part) and a front view (lower part) of the filament body in the comparative light bulb.
  • FIG. 25 A halogen lamp having the form of a filament body according to the third embodiment. It is a figure which shows the investigation result of relative illuminance when changing the combination of short axis length, coil space
  • FIG. 26 is a graph created based on FIG.
  • FIG. 30 Regarding the halogen bulb having the form of the filament body of Modification 1, when combined with a medium-angle reflector, the combination of short axis length (constant), coil interval (light emitting unit interval), and flatness ratio It is a figure which shows the investigation result of the relative illumination intensity when making it change.
  • FIG. 31 is a graph created based on FIG.
  • Fig.32 Regarding the halogen bulb with the form of the filament body of Modification 1, when combined with a wide-angle reflector, the combination of the short axis length (constant), coil spacing (light emitting section spacing), and flatness ratio is changed. It is a figure which shows the investigation result of the relative illumination intensity when letting it be made.
  • ⁇ 34 A schematic diagram showing a plan view (upper part) and a front view (lower part) of a filament body according to Modification 2 of Embodiment 3 above.
  • FIG. 35 Regarding the halogen bulb having the form of the filament body of Modification 2, when combined with a medium-angle reflector, the combination of the short axis length (constant), coil spacing (light emitting section spacing), and flatness ratio It is a figure which shows the investigation result of the relative illumination intensity when making it change.
  • FIG. 38 is a graph created based on FIG.
  • FIG. 40 Regarding the halogen bulb having the form of the filament body of Modification 3, when combined with a wide-angle reflector, the combination of the short axis length (constant), coil spacing (light emitting section spacing), and flatness ratio is changed. It is a figure which shows the investigation result of the relative illumination intensity when letting it be made.
  • FIG. 41 is a graph created based on FIG.
  • FIG. 42 is a diagram showing a schematic configuration of a halogen light bulb with a reflector according to Embodiment 3.
  • FIG. 43 is a diagram illustrating a cross-sectional shape of a flat tube (shape).
  • FIG. 1 is a partially cutaway view showing a schematic configuration of lighting apparatus 10 according to Embodiment 1.
  • the lighting fixture 12 has a bottomed cylindrical fixture body 16 and a reflecting mirror 18 housed in the fixture body 16.
  • a holder (not shown) for attaching the base 30 (see FIG. 2) of the halogen bulb 14 is provided at the bottom of the instrument body 16.
  • the instrument body 16 is not limited to a cylindrical shape, and may be various known shapes.
  • the reflecting mirror 18 can be attached to and detached from the instrument body 16 so that the halogen bulb 14 can be replaced.
  • the reflecting mirror 18 has a hard glass substrate 20 having a funnel shape.
  • a multi-layer interference film 22 constituting a reflecting surface is formed on the concave surface portion 20A formed on the rotating ellipsoid or the paraboloid of the substrate 20.
  • the multilayer interference film 22 is made of silicon dioxide (SiO 2), titanium dioxide
  • the reflective surface can be formed of a metal film having an aluminum or chromium force instead of the multilayer interference film 22.
  • Reflector 18 has an aperture diameter (one mirror diameter) of 100 mm and a beam opening (beam angle) force with a narrow angle (about 10 °). Note that facets may be formed on the reflecting surface as necessary.
  • the reflecting mirror 18 has a front glass 24 provided at the opening (light irradiation opening) of the base 20.
  • the front glass 24 is fixed to the base body 20, and the base 20 portion is configured to be detachable from the instrument body 16 for replacement of the halogen bulb 14.
  • the present invention is not limited to this.
  • the front glass may be fixed to the main body and detachable from the base.
  • the Rogen bulb 14 is attached to the receiver (not shown) and is used by being incorporated in the reflector 18. In the assembled (attached) state, a central axis B of a bulb 26 (to be described later) of the halogen bulb 14 is positioned substantially on the same axis as the optical axis R of the reflector 18 (the central axis B and the optical axis R). Axis R will be approximately coincident).
  • the halogen light bulb 14 is a light bulb whose rated voltage is set to 100 [V] or more and 150 [V] or less and the rated power is set to 100 [W] or less.
  • FIG. 2 shows a partially cutaway front view of the halogen bulb 14.
  • the halogen light bulb 14 includes a hermetically sealed bulb 26 and an E-type base 30 fixed to the sealing portion 38 side of the bulb 26 with an adhesive 28, for example.
  • the nozzle 26 includes a chip-off portion 32 that is a residual mark of a sealing cut, a filament body storage portion 34 that stores a filament body 60 and the like to be described later, a substantially cylindrical tube portion 36, and a known pinch
  • the sealing portion 38 formed by the process method is connected in this order.
  • the structure of the valve is not limited to the one described above, and for example, a tip-off portion (may not be provided in some cases), a filament body housing portion, and a sealing portion may be connected in this order. .
  • an infrared reflecting film is formed on the outer surface of the filament body housing portion 34.
  • this infrared reflective film is not necessarily required and is formed as appropriate.
  • a predetermined amount of a halogen substance and a rare gas are sealed in the bulb 26, respectively.
  • nitrogen gas may be sealed.
  • krypton gas As the rare gas.
  • the light emitting parts are arranged close to each other as will be described later. By suppressing the occurrence of arc discharge and disconnection at the time of lighting, the same effect can be obtained.
  • the sealed gas shall contain nitrogen gas and halogen substance mainly composed of krypton, and the gas pressure at room temperature in the valve 26 should be set within the range of 2 [atm] to 10 [atm]. Is preferred. If the gas pressure exceeds 10 [atm], the luminaire may be damaged by scattered pieces in the event that the Noreb 26 is damaged. On the other hand, if the gas pressure is less than 2 [atm] In this case, tungsten, which is a constituent material of the filament body 60, easily evaporates and the lamp life is shortened. In other words, in the above range of gas pressure, since the gas pressure is moderately controlled, even if the bulb 26 is broken, the fragments are not scattered at such a moment that the lighting fixture is broken.
  • the composition ratio of the nitrogen gas is preferably set within a range of 8 [%] to 40 [%].
  • the composition ratio force of nitrogen gas exceeds 0 [%]
  • the heat generated in the filament body 60 during lighting is excessively released through the nitrogen gas, which may reduce the efficiency, while 8 [% If the value is less than 1, the arc discharge is likely to occur between the adjacent light emitting sections when the lamp is lit, or disconnection is likely to occur immediately.
  • the composition ratio range of nitrogen gas since the yarn composition ratio of nitrogen gas is moderately suppressed, heat generated in the filament body 60 during lighting is excessively released through the nitrogen gas.
  • sealing portion 38 a pair of metal foils 40, 42 are sealed.
  • Metal foils 40 and 42 are made of molybdenum.
  • the surface of the sealing portion 38 is made uneven. Therefore, it is preferable to increase the surface area and improve the heat dissipation at the sealing portion 38.
  • One end portion of the external lead wire 44 is connected to one end portion of the metal foil 40, and one end portion of the external lead wire 46 is joined to and electrically connected to one end portion of the metal foil 42.
  • the external lead wires 44 and 46 are made of tungsten.
  • the other end portions of the external lead wires 44 and 46 are led out to the outside of the valve 26 and are electrically connected to the terminal portions 48 and 50 of the base 30, respectively.
  • At least one of the two external lead wires 44 and 46 and the base 30 It is preferable to provide a fuse (not shown) between the corresponding terminals (48 or 50). By providing the fuse, even if a break occurs in the light emitting part and an arc discharge occurs at that break point, the fuse is blown immediately and the continuation of the arc discharge is stopped. 26 can be prevented from being damaged.
  • a fuse between each of the external lead wires 44 and 46 and the corresponding terminal portions 48 and 50 of the base 30. In this case, there is a possibility that arc discharge may occur between adjacent light emitting parts even if arc discharge due to disconnection at the light emitting part does not occur.
  • One end force of the inner lead wire 52 is connected to the other end portion of the metal foil 40, and one end portion of the inner lead wire 54 is joined and electrically connected to the other end portion of the metal foil 42. .
  • the internal lead wires 52 and 54 are made of tungsten. One end portions of the internal lead wires 52 and 54 are supported by the sealing portion 38 of the valve 26.
  • the internal lead wires 52 and 54 supply external power supplied through the base 30 to the filament body 60 and also serve as a support member that directly supports a part of the filament body 60.
  • FIG. 3 is a perspective view showing a support structure that supports the filament body 60
  • FIG. 4 is a perspective view showing a state in which the filament body 60 is supported by the support structure.
  • the internal lead wires 52 and 54 and the support wire 56 are sandwiched between a pair of cylindrical stem glasses 57 and 59. As a result, the support wire 56 is supported and the relative positions of the internal lead wires 52 and 54 and the support wire 56 are maintained.
  • the filament body 60 is composed of two filament coils, a first filament coil 62 and a second filament coil 64.
  • the first and second filament coils 62 and 64 are wound with a tungsten wire as will be described later.
  • the internal lead wires 52 and 54 and the support wire 56 are inserted into the end portions of the filament coils 62 and 64, and are bent in a “U” shape for supporting the filament coils 62 and 64 (hereinafter referred to as this The part is called “coil support part”).
  • the first and second filament coils 62 and 64 emit light at the portion where the coil support portion is inserted. Without light (non-light emitting part), light is emitted between the coil support parts.
  • the portions between the coil support portions (that is, the portions that emit light) in the filament coils 62 and 64 are defined as the first light emitting portion 62A and the second light emitting portion 64A, respectively. That is, the filament body 60 has two light emitting portions 62A and 64A in a single coil shape.
  • the first and second filament coils 62 and 64 are single coils (hereinafter referred to as a flat coil). , which is abbreviated as “flat coil”.
  • the reason for this shape is as follows. That is, in comparison with a conventional single coil wound in a cylindrical shape (hereinafter abbreviated as “cylindrical coil”) as described in Patent Document 2 and Patent Document 3, (If the short axis length of the cylinder is equal to the diameter of the cylinder) Because the wire length per turn can be increased, if the wire length of the tungsten wire is the same, the coil length can be shortened.
  • the filament coil (light emitting portion) in the optical axis direction (valve central axis) of the reflecting mirror can be reduced.
  • the length in the direction intersecting the optical axis of the reflecting mirror is longer than that of the coil wound in a cylindrical shape, but in order to improve the light collection efficiency, it intersects with the optical axis.
  • the effect of shortening in the direction of the optical axis is greater than the direction of being
  • Filament coils 62 and 64 which are flat coils, are manufactured as follows.
  • FIG. 6 schematically shows a plan view of the first filament coil 62 viewed from the coil axis CX direction force.
  • the lower part of FIG. 6 schematically shows the front view of the same. It is a representation.
  • first and second filament coils 62 and 64 have substantially the same shape, the first filament coil 62 will be described as a representative.
  • the first filament coil 62 is a so-called semicircular connection between two corresponding ends of two line segments arranged in parallel when viewed from the coil axis CX direction. It has a track shape (for track and field). This shape is derived from the above-described manufacturing method, and a flatter track shape is obtained as the number of core wires 66 is increased. That is, the degree of flatness! /, (Flatness) can be adjusted by the number of core wires 66.
  • the flatness is defined as a value obtained by dividing the length (major inner diameter) of the major axis LX in the inner periphery of the first filament coil 62 by the length (minor inner diameter) of the minor axis SX.
  • the flatness is an integer value due to the above manufacturing method, and the flatness is 4 as an example.
  • the first filament coil 62 includes the non-light emitting part 6 at both ends supported by the coil support part 52A and the coil support part 56A (FIGS. 3 and 4). 2B and a light emitting portion 62A between the coil support portions 52A and 56A.
  • the “light emission center” of the filament coil is defined. If the first filament coil 62 is defined as an example, the “light emission center 62CP” is on the coil axis CX and is the middle position in the total length L of the light emitting portion 62A.
  • An example of the specification of the first filament coil 62 is summarized as follows.
  • Short axis CX length (short inner diameter): 0.35mm
  • Wire (tungsten wire) diameter 0.05 mm
  • the total length L of the light emitting part is not limited to the above value, but 2.5mn! It can be set within the range of ⁇ 6.5mm. This range can be applied to the entire length of the light emitting section in the filament body of Embodiment 1 and Embodiment 2 described later.
  • FIG. 7 shows a state where the internal lead wires 52 and 54 and the support wire 56 are attached.
  • the first and second filament coils 62 and 64 are schematically shown in plan view of the direction force of the central axis B (Figs. 1 and 2) of the valve 26.
  • the front view is schematically represented.
  • FIG. 7 can be said to be a view of the first and second filament coils 62 and 64 from the direction of the optical axis R (FIG. 1) of the reflecting mirror 18. .
  • FIG. 7 can be said to be a view of the first and second filament coils 62 and 64 from the direction of the optical axis R (FIG. 1) of the reflecting mirror 18. .
  • FIG. 1 optical axis
  • first and second filament coils 62 and 64 are used for the purpose of explaining the positional relationship between the first and second filament coils 62 and 64, the illustration of the internal lead wires 52 and 54 is omitted in this figure, and the support wire 56 is simply represented by a line for the purpose of showing the electrical connection between the first and second filament coils 62 and 64.
  • the first and second light emitting portions 62A and 64A of the first and second filament coils 62 and 64 are represented by solid lines, and the non-light emitting portions 62B and 64B are represented by two-dot chain lines. .
  • the first filament coil 62 (first light emitting portion 62A) and the second filament coil 64 (second light emitting portion 64A) are (i) centered on each coil axis CX. (Ii) Both coil axes and the central axis B are on the same plane, and (iii) Both long axes LX are substantially parallel to each other, with a spacing D1. ing.
  • the coil interval D1 is set to 0.9 mm as an example.
  • the distance D2 of the first filament coil 62 (first light emitting part 62A) from the central axis B is different from the distance D3 of the second filament coil 64 (second light emitting part). That is, the distance of the light emission center CP of the first light emission part 62A and the distance of the light emission center CP of the second light emission part 64A with the central axis B force are different.
  • a halogen light bulb having a filament body set to the above-mentioned value is referred to as a “first embodiment light bulb”.
  • the first comparative light bulb has a filament body in which two filament coils (light emitting portions) are arranged symmetrically with respect to the central axis B.
  • the light bulb of the first example and the first comparative light bulb the light distribution characteristics when these were combined with a reflecting mirror were investigated.
  • the survey was conducted under the following conditions.
  • Commercially available reflector with mirror The halogen bulb attached to the Rogen bulb (Matsushita Electric Industrial Co., Ltd., part number JDR110V65WKNZ5E11) was replaced with the first comparison bulb or the first example bulb.
  • the halogen bulb with a reflector has a beam opening (beam angle) force of narrow angle (about 10 °).
  • each of the two halogen bulbs with reflectors made in this way is lit at a rated voltage of 110 [V] and a rated power of 65 [W], it is a distance l [m] away from the halogen bulb with the reflector.
  • the light distribution characteristics (light distribution curve) on the irradiated surface were investigated.
  • the light distribution characteristics of the comparative light bulb, which will be described later other than the first comparative light bulb and the first light bulb, and the light bulb characteristics of the example light bulb were also investigated in the same manner as described above. Therefore, it will be omitted.
  • the bimodality is eliminated and the peak of the light distribution curve is single. In other words, it is a spotlight with good light distribution characteristics that is almost symmetric around the brightest part.
  • the light distribution curve of the first light emitting unit 62A related to the light emission center 62CP closer to the central axis B is made different by making the distance of the light emission center 62CP (Fig. 7) from the center axis B different from the distance of the light emission center 64CP.
  • This is considered to be because the influence on the shape of the light emission becomes more dominant than the influence on the shape of the light distribution curve of the second light-emitting portion 64A related to the light emission center 64CP which is far from the central axis B force.
  • FIG. 8 shows that the first filament coil 62 (first light emitting part 62A) is further moved closer to the central axis B, and the second filament coil 64 (second light emitting part 64A) is further moved away from the central axis B force.
  • Filament body 70 In the filament body 70, the first filament coil 62 (first light emitting unit 62A) is arranged at a position including the central axis B. In the filament body 70 as well, the coil interval D4 was set to 0.9 mm.
  • the halogen light bulb with the filament body 70 was designated as “second example light bulb”, and the light distribution characteristics related to this were investigated.
  • a halogen bulb with a coil spacing D4 set to 2 mm (hereinafter referred to as the “third embodiment bulb”) is similar to the second embodiment bulb as shown by the light distribution curve shown by the solid line in FIG. It became light distribution characteristics.
  • the second filament coil 64 (second light-emitting portion 64A) that should improve the asymmetry of the light distribution curve is inclined with respect to the central axis B.
  • the light distribution curve of a halogen light bulb hereinafter referred to as the “fourth embodiment light bulb” provided with the filament body 72 is shown in FIG. In this way, by tilting the second filament coil 64 (second light-emitting portion 64A) farther from the center axis B force, the light distribution curve becomes substantially symmetrical with respect to the peak, and the light distribution characteristics are improved. It can be a problem.
  • FIG. 12 is a diagram showing a filament body 74 configured as described above.
  • the filament body 74 has the first light-emitting part 62 ⁇ and the second light-emitting part 64 ⁇ arranged in a posture as shown in FIG. 7 in which the coil axis CX is parallel to the central axis ⁇ .
  • the end of the reflecting mirror 18 on the light irradiation opening side is tilted in the direction of approaching.
  • the light emission center 62CP of the first light emitting unit 62 ⁇ is closer to the central axis ⁇ ⁇ than the light emission center 64CP of the second light emitting unit 64 ⁇ .
  • the distance D7 shown in Fig. 12 is 0.4mm.
  • D8 is 1.6mm.
  • the halogen light bulb including the filament body 74 configured as described above is referred to as a “fifth embodiment light bulb”.
  • Fig. 13 shows the light distribution curves of the fifth example bulb and the second comparison bulb.
  • the first light-emitting portion 62A and the second light-emitting portion 64A are inclined while maintaining linearity.
  • each light emitting part faces inward (directly toward the opposite light emitting part on the opposite side) and becomes a bow.
  • the light emitting portions 62A and 64A may be tilted in the opposite direction to the filament body 74 (FIG. 12) according to the fifth embodiment bulb.
  • FIG. 14 is a diagram showing the filament body 76 configured as described above.
  • the filament body is composed of two filament coils in which one end portions are electrically connected by a support wire.
  • the filament body has two light-emitting locations because part of each filament coil emits light when the halogen bulb is energized.
  • one filament coil is arranged in the longitudinal direction (coil axis center).
  • the first light-emitting part is bent at the substantially central part and the second light-emitting part exists between the bent part including the non-light-emitting part and one end part of the filament coil, and the second light-emitting part is provided between the other end part.
  • the halogen bulb according to the second embodiment is the same as that in the first embodiment (including each example), including halogen substances and rare gases sealed in the bulb, except that the filament body and its support structure are different.
  • the configuration is basically the same as that of the halogen bulb. Therefore, the following description will focus on the different parts.
  • the lighting device can be configured by mounting the halogen light bulb of the second embodiment on the lighting fixture 12 (FIG. 1) of the first embodiment.
  • FIG. 15 is a perspective view showing a schematic configuration of the filament body 202 and the support structure thereof according to the first example of the halogen light bulb of the second embodiment.
  • the filament body 202 is prepared in the same manner as the filament coils 62 and 64 (Figs. 4 and 6). (Fig. 5) One filament coil 204 is bent at the center and held in a bent state. is there. That is, like the filament coils 62 and 64, the filament coil 204 is a single coil in which filament wires are wound in a cylindrical shape with a flat cross section having a short axis and a long axis. The filament coil 204 is bent in the minor axis direction starting from the center.
  • One end portion of the filament coil 204 is supported by the coil support portion 206 A of the internal lead wire 206, and the other end portion is supported by the coil support portion 208 A of the internal lead wire 208.
  • Reference numerals 212 and 214 denote stem glasses.
  • the central portion (bent portion) in the longitudinal direction of the filament coil 204 is suspended and supported by a support wire 210 that is a support member.
  • the filament coil 204 is the same as in the first embodiment in that it does not emit light (non-light emitting portion) at the portions supported by the coil support portions 206A and 208A.
  • the internal lead wires 206 and 208 and the support wire 210 are made of tungsten.
  • the filament coil 204 Since the filament coil 204 is bent as described above, its coil axis is also bent in the same plane.
  • the filament coil 204 is arranged such that its coil axis is substantially on the same plane as the central axis B.
  • the support wire 210 only needs to be able to mechanically support the filament coil that has the function of electrically connecting the filament coils. It is also possible to form with a glass material. Even in this case, inside the bent portion of the filament coil 204, the coil pitch becomes narrower as the adjacent windings (turns) come into contact with each other. Short circuit occurs at the part. As a result, the short circuit portion does not emit light.
  • the filament body 202 is between the first light emitting unit 204A1 and the second light emitting unit 204A2.
  • the distance in the direction perpendicular to the central axis B becomes narrower as it approaches the light irradiation opening side of the reflector 18 (say In other words, the first light-emitting portion 204A1 and the second light-emitting portion 204A become “ha” as shown in FIG.
  • the filament body 76 of the first embodiment it may be possible to form a reverse “no” shape.
  • both the first light-emitting portion 204A1 and the second light-emitting portion 204A2 are configured to incline with respect to the central axis B.
  • the present invention is not limited to this, and only one light emitting portion may be inclined with respect to the central axis B, and the other light emitting portion may be configured to be substantially parallel to the central axis B.
  • the first light emitting unit 204A1 and the first light emitting unit 204A1 have a central axis B force so that the distance between the light emitting center 204CP1 of the first light emitting unit 204A1 and the distance of the light emitting center 204CP2 of the second light emitting unit 204A2 is different.
  • Two light emitting units 204A2 are arranged.
  • FIG. 18 is a perspective view showing a support structure that supports the filament body 360 of the halogen bulb according to Embodiment 3
  • FIG. 19 is a perspective view showing a state in which the filament body 360 is supported by the support structure. Respectively.
  • the reflecting mirror 18 has a beam opening (beam angle) 1S medium angle or A wide-angle one is used.
  • the beam opening is 20 ° for the medium angle and 35 ° for the wide angle, and the allowable range is ⁇ 25 [%] as specified in the IEC standard.
  • the internal lead wires 352 and 354 and the support wire 356 are sandwiched between a pair of cylindrical stem glasses 57 and 59. As a result, the support wire 356 is supported, and the relative positions of the internal lead wires 35 2 and 354 and the support wire 356 are maintained.
  • the filament body 360 is composed of two filament coils, a first filament coil 362 and a second filament coil 364.
  • the second filament coil 364 is supported by a coil support portion 356B (see FIG. 18) of the support wire 356 and a coil support portion 354A (see FIG. 18) of the internal lead wire 354.
  • FIG. 20 shows the first and second filament coils 362 and 364 attached to the internal lead wires 352 and 354 and the support wire 356 with the central axis B of the nozzle 26 (FIG. 1).
  • Figure 2 A plan view seen from the direction is schematically shown, and the lower part of FIG. 20 shows the front view schematically.
  • FIG. 20 shows the first and second filament coils 362 and 364 viewed from the optical axis R (FIG. 1) direction of the reflecting mirror 18. It can also be said.
  • FIG. 1 shows the first and second filament coils 362 and 364 attached to the internal lead wires 352 and 354 and the support wire 356 with the central axis B of the nozzle 26 (FIG. 1).
  • Figure 2 A plan view seen from the direction is schematically shown, and the lower part of FIG. 20 shows the front view schematically.
  • FIG. 20 shows the first and second filament coils 362 and 364 viewed from the optical axis R (FIG. 1) direction of the reflecting mirror 18. It can also be
  • the wire 356 is simply represented by a wire for the purpose of showing an electrical connection relationship between the first and second filament coils 362 and 364.
  • the first and second light emitting portions 362A and 364A of the first and second filament coils 362 and 364 are indicated by solid lines, and the non-light emitting portions 362B and 364B are indicated by two-dot chain lines.
  • the first filament coil 362 (first light-emitting portion 362A), the second filament coil 364 (second light-emitting portion 364A), and the force.
  • Each coil axis CX is substantially parallel to the central axis B.
  • the filament body 360 is configured in such a manner that the long axes LX of both coils are arranged substantially parallel to each other.
  • the first filament coil 362 (first light emitting unit 362A) and the second filament coil 364 (second light emitting unit 364A) are arranged with a predetermined coil interval (light emitting unit interval) D31.
  • FIG. 21 shows an example of the specification of such a halogen bulb.
  • Nos. 3 to 14 are halogen light bulbs according to the examples (hereinafter referred to as “example light bulbs”).
  • minor axis length SX 0.35 [mm]
  • flatness 3
  • No. 9 to 14 are coil spacing (light emitting section spacing) D3
  • the winding intervals (pitch) in each filament coil of the example bulbs according to Nos. 3 to 14 were all the same.
  • the tungsten wire of the portion forming the light emitting portion of each filament coil was also made substantially the same length. Therefore
  • the total light emitting section length (effective coil length) is inevitably determined.
  • No. 1 is a halogen bulb (hereinafter referred to as “reference bulb”) that constitutes a halogen bulb with a reflector that has been put into practical use (manufactured by Matsushita Electric Industrial Co., Ltd., part number JDR110V65WKM / 5E11). And a double coil filament body.
  • the reflector of the halogen bulb with the reflector has a medium beam angle (beam opening).
  • No. 2 is a halogen bulb (hereinafter referred to as "comparative bulb") shown as a comparative example.
  • the first to third filament coils 402, 404, 406 ( It has a filament body 400 composed of first to third light emitting portions 402A, 404A, 406A).
  • FIG. 22 is a diagram drawn in accordance with FIG. 20, and the comparative light bulb has a second filament coil 404 (second light emitting part 04 04A), with its axis CX substantially aligned with the central axis B of the bulb 26.
  • the first and third filament coils 402 and 406 are arranged on both sides with a coil spacing (light emitting section spacing) D32 therebetween. is there.
  • the light bulbs of No. 1 to No. 14 all have the same luminous flux (1100 [lm]), so the greater the contrast value, the better the light condensing performance. . Needless to say, even if the luminous flux is less than 1100 [lm], if the relative illuminance exceeds 100, the light collecting is superior to the standard bulb.
  • the example bulb (Nos. 3 to 14) a light collecting property equal to or higher than that of the reference bulb (No. 1) can be obtained, and the reference bulb (No. 1) and Equivalent life is achieved.
  • the example bulbs (No. 3 to 14) are composed of a filament body with only a single coil, and are therefore more than the reference bulb (No. 1) which comprises a filament body with a double coil. Needless to say, impact resistance has been improved.
  • Figure 23 shows the results of the survey. As shown in FIG. 23, the coil interval was changed in the range of 0.2 [mm] to 4.5 [mm], and the flatness was changed in the range of 2 to 10, and the relative illuminance was investigated for each combination.
  • FIG. 24 shows an X—y orthogonal coordinate system in which the light emitting section interval (coil interval) is plotted on the X axis (horizontal axis) and the flatness is plotted on the y axis (vertical axis).
  • the survey results shown in Fig. 23 show the white circle “ ⁇ ” when the relative illuminance is 100 or more, and the black circle “ ⁇ ” when the relative illuminance is less than 100. Plotted on a Cartesian coordinate system graph.
  • the combinations of “light emitting section interval” and “flattening ratio” are represented by points E1 (0.2,3), E2 (0.2,10), and E3 represented by (X, y) coordinates.
  • E1 0.2,3
  • E2 0.2,10
  • E3 represented by (X, y) coordinates.
  • point E4 (4, 8)
  • point E 5 (4, 6)
  • point E6 3.5, 5
  • point E7 3.5, 3
  • point E9 2.5, 2)
  • point E10 0.5, 2)
  • point El 0.2, 3
  • the survey results are shown in Figure 25.
  • the coil spacing is in the range of 0.2 [mm] to 4 [mm]
  • the minor axis length is varied in the range of 0.3 [mm] to: LO [mm].
  • the relative illuminance was investigated.
  • the X-axis (horizontal axis) is the light emitting section spacing (coil spacing), and the y-axis (vertical axis) is the minor axis length [mm].
  • An x-y Cartesian coordinate system As in the case of Fig. 24, the survey results shown in Fig. 25 show that the white circle is ⁇ if the relative illuminance is 100 or higher, and the black circle is ⁇ if the relative illuminance is less than 100. And plotted on the graph of the XY rectangular coordinate system.
  • the combination of “light emitting section interval” and “short axis length” is expressed by points F1 (0.2, 0.3), F2 (0.2, 1.0), F3 (3.5, 1.0), point F4 (3.5, 0.35), point F5 (3, 0.3), point F1 (0.2, 0.3) in the area enclosed by the line segment (including the above line segment) It is sufficient to set the value in).
  • Figure 27 shows the survey results. As shown in FIG. 27, the coil spacing was varied in the range of 0.2 [mm] to 4.5 [mm], and the flatness was varied in the range of 2 to 10, and the relative illuminance was investigated for each combination.
  • Fig. 28 shows an XY rectangular coordinate system with the light emitting section interval (coil interval) on the X axis (horizontal axis) and the flatness on the y axis (vertical axis).
  • the white circle “ ⁇ ” is plotted, and when the relative illuminance is less than 100, the black circle “ ⁇ ” is plotted on the x-y orthogonal coordinate system graph. did.
  • the combination of “light emitting section interval” and “flattening ratio” is represented by point G1 (0.5,6), point G2 (0.5,10), point G3 expressed in (X, y) coordinates. (4.5, 10), point G4 (4.5, 3), point G5 (l, 3), point G6 (l, 6), point G1 (0.5,6) Includes on the line segment. ).
  • the first and second filament coils 364 and 366 are arranged so that the coil axis CX is substantially parallel to the central axis B of the bulb 26.
  • the coil axis CX is inclined with respect to the central axis B, and the distance between the coil axes CX is such that the reflecting surface 20A of the reflecting mirror 18 (FIG. 1)
  • the first and second filament coils 364 and 366 may be arranged in a posture that becomes narrower as they move away from the projector. 29 is basically the same as the filament body 360 shown in FIG.
  • the same components are the same.
  • the reference numerals are attached and explanations thereof are omitted.
  • the filament bodies according to the modifications 2 and 3 described below are basically the same as the filament body 360 shown in FIG. 20 except that the arrangement relationship of the filament coils is different.
  • the same reference numerals are assigned and explanations thereof are omitted.
  • the wide-side light-emitting portion interval D34 shown in FIG. 29 is fixed at 2.5 [mm] and the short-axis length is set to 0.35 [mm].
  • the results of the survey are shown in FIG. As shown in Fig. 27, the light emitting section interval on the narrow side (coil interval on the narrow side) is in the range of 0.2 [mm] to l.5 [mm], and the flatness is changed in the range of 2 to 10.
  • the relative illuminance was investigated for each combination.
  • FIG. 31 shows an x-y Cartesian coordinate system in which the X-axis (horizontal axis) is the narrow light-emitting section interval (narrow coil interval) and the y-axis (vertical axis) is the flatness.
  • the survey results shown in Fig. 30 are indicated by a white circle “ ⁇ ”, and if the relative illuminance is less than 100, the black circle “ ⁇ ” indicates the above X-y. Plotted on a Cartesian coordinate system graph. Therefore, in FIG.
  • the above survey was the same force as when using a medium-angle reflector. The same survey was carried out even when a wide-angle reflector was used.
  • Figure 32 shows the survey results
  • Figure 33 shows the survey results in graph form.
  • the combination of "narrow side light emitting part interval (narrow side coil interval)" and “flattening rate” is represented by a point J1 (0.5,3) expressed in (X, y) coordinates.
  • Point J2 0.5, 10
  • point J3 1.5, 10
  • point J4 1.5, 3
  • point J1 0.5, 3
  • the distance between the coil axes CX is such that the distance from the reflecting surface 20A of the reflecting mirror 18 (Fig. 1) increases.
  • the first and second filament coils 364, 366 (light emitting parts 364A, 366A) were arranged in such a narrowed position (Fig. 29), but conversely, both coil axes CX
  • the spacing force between the reflectors 18 (Fig. 1) The reflecting surface 20A
  • the first and second filament coils 364, 366 (light emitting portions 364A, 366A) may be arranged in such a posture that the force of the reflecting surface 20A increases as the distance increases. I do not care.
  • FIG. 34 shows a filament body 372 according to the second modification.
  • the first and second filament coils 364, 366 have their coil axis CX substantially parallel to the central axis B of the bulb 26.
  • the filament body 372 according to the modification 2 is different in that the filament body 372 is arranged so as to be substantially orthogonal to the central axis B of the coil axis CX force valve 26.
  • the inventors of the present application also investigated the relative illuminance when the combination of the minor axis length [mm], the flatness ratio, and the coil interval D35 [mm] was variously changed in Modification 2.
  • the combination of "coil spacing (light emitting section spacing)" and “flattening ratio” is expressed by points K1 (0.2,3) and K2 ( 0.2, 10), point K3 (3.5, 10), point K4 (3.5, 8), point K5 (3, 6), point ⁇ 6 (3, 3), point Kl (0.2,3) in sequence It may be set to a value in the region surrounded and connected (including the above line segment).
  • the survey results are shown in Fig. 37, and the graph created based on the survey results is shown in Fig. 38.
  • the combination of “coil interval (light emitting unit interval)” and “flattening ratio” is represented by a point Ml (0.5, 3) expressed by (X, y) coordinates, Point M2 (0.5, 10), Point M3 (4.5, 10), Point M4 (4.5, 2), Point M5 (3.5, 2), Point M6 (3, 3), Point Ml (0.5, 3), It may be set to a value in the area surrounded by the line segment (including the above line segment). (Modification 3)
  • FIG. 39 shows a filament body 374 according to the third modification.
  • the first and second filament coils 364 and 366 are spaced apart in a direction substantially perpendicular to the central axis B of the bulb 26.
  • the filament body 374 according to Modification 3 has a central axis B of the valve 26. The difference is that they are arranged at intervals in the direction of.
  • the relative illuminance was investigated for various combinations of coil spacing D36 (Fig. 39) and flatness.
  • the reflector used was a wide angle.
  • Figure 40 shows the survey results. As shown in Fig. 40, the coil spacing was in the range of 0.2 [mm] to 4.5 [mm], and the flatness was varied in the range of 2 to 10, and the relative illuminance was investigated for each combination.
  • FIG. 42 is a longitudinal sectional view showing a schematic configuration of a halogen lamp 100 with a reflector according to the fourth embodiment.
  • the halogen bulb 100 with a reflector is a reflector-integrated halogen bulb.
  • the halogen bulb 102 used for this is the halogen bulb 14 according to Embodiment 1 except that the base is mainly different (Fig. Since the configuration is basically the same as 2), common portions are denoted by the same reference numerals, and description thereof is omitted.
  • the filament body of the halogen light bulb constituting the halogen light bulb with a reflecting mirror may be the one according to the second or third embodiment.
  • the reflecting mirror 104 has a funnel-like substrate 106 that is made of hard glass or quartz glass.
  • a multilayer interference film 108 constituting a reflecting surface is formed on the concave surface portion 106A formed on the spheroidal surface or the paraboloid of the base 106.
  • Multilayer interference film 108 Is silicon dioxide)), titanium dioxide (TiO), magnesium fluoride (MgF), sulfur
  • the reflective surface may be formed of a metal film having an aluminum or chromium equivalent force instead of the multilayer interference film 108.
  • the aperture diameter (mirror diameter) of the reflector 104 is 100 mm. Note that facets may be formed on the reflecting surface as necessary.
  • the reflecting mirror 104 has a front glass 110 provided at the opening (light irradiation opening) of the base 106.
  • the front glass 110 is locked to the base 106 by a known stopper 112. It should be noted that instead of the stopper 112, it may be fixed with an adhesive. Or you may use both together.
  • the front glass is not necessarily an essential component of the halogen bulb with a reflector.
  • the neck portion 106B of the base body 106 is fitted with a base body receiving portion 122 provided on the side opposite to the terminal portions 116 and 118 of the base 114 of the halogen light bulb 102, and is fixed by an adhesive 124. .
  • the valve 26 is attached to the base 114 before the base 106 is attached to the base 114.
  • the bulb 26 and the base 106 (reflector 104) attached to the base 114 that is, with the halogen bulb 102 incorporated in the reflector 104
  • the central axis of the bulb 26 and The optical axis of the reflecting mirror 104 is located substantially coaxially (the central axis and the optical axis substantially coincide).
  • the lighting device is configured by the lighting fixture including the reflecting mirror and the halogen light bulb.
  • the lighting device is not limited thereto, and the lighting device does not include the reflecting mirror and the halogen light bulb with the reflecting mirror. It does not matter even if it constitutes.
  • the halogen bulb 100 with a reflector shown in FIG. 42 may be attached to constitute the illumination device. Absent.
  • the filament coil is not limited to the track shape described above, and may be another flat shape. In short, it may be wound into a cylindrical shape having a flat cross section having a major axis and a minor axis perpendicular to each other. Further, the flatness is not limited to an integer, and can be an arbitrary decimal number.
  • a flat cross section having a short axis and a long axis is described below. Including those with such shapes. The shape will be described with reference to FIG. 43, the symbol “SX” is assigned to the minor axis, the symbol “LX” is assigned to the major axis, and the central axis (ie, the coil axis) that is substantially orthogonal to both the minor axis and the major axis. “CX” is attached to each.
  • the track when viewed in the direction of the coil axis CX direction, the track has the shape described above, that is, two parallel line segments and their respective ends connected by a substantially semicircle.
  • the coil axis is in a substantially rectangular shape when viewed in the CX direction. However, the four corners are rounded for processing.
  • (V) Other, having a shape similar to the above (i) to (iv) when viewed from the coil axis CX direction.
  • (i) above as shown in (e) of the figure, even if two parallel line segments are curved inward, they are included in a shape similar to (i) above.
  • the deformed shapes (i) to (iv) due to processing variations are also included.
  • a force showing a halogen bulb as an example of a bulb.
  • the present invention is also applicable to a bulb other than a halogen bulb.
  • any light source that emits incandescent light by passing an electric current through the filament body may be used.
  • the tube according to the present invention can be suitably used as, for example, a tube used by being incorporated in a reflecting mirror.

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

Selon l'invention, un corps de filament (60) est utilisé dans l'ampoule d'une lampe à halogène qui est utilisée en étant incorporée dans un miroir concave. Le corps de filament est produit en reliant en série une première partie d'émission de lumière (62A) et une seconde partie d'émission de lumière (64A) grâce à un fil de support (56). Chaque partie d'émission de lumière est une bobine unique dans laquelle un fil de filament est enroulé sous la forme d'un tube comportant une section plate possédant un axe cours (SX) et un axe long (LX). Afin d'améliorer les caractéristiques de répartition de l'intensité lumineuse, la distance depuis l'axe central (B) de l'ampoule jusqu'au centre d'émission (62CP) de la première partie d'émission de lumière et la distance depuis l'axe central (B) de l'ampoule jusqu'au centre d'émission (64CP) de la seconde partie d'émission de lumière sont différenciées l'une de l'autre.
PCT/JP2007/063284 2006-07-03 2007-07-03 Ampoule, ampoule avec réflecteur et dispositif d'éclairage Ceased WO2008004540A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200780025347XA CN101484972B (zh) 2006-07-03 2007-07-03 白炽灯、带反射镜的白炽灯和照明装置

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2006-183067 2006-07-03
JP2006183067A JP2008016206A (ja) 2006-07-03 2006-07-03 管球、反射鏡付き管球、および照明装置
JP2006-184823 2006-07-04
JP2006184823 2006-07-04
JP2007101628A JP4173524B2 (ja) 2006-07-04 2007-04-09 管球、反射鏡付き管球、および照明装置
JP2007-101628 2007-04-09

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2814823A1 (de) * 1977-04-18 1978-10-19 Philips Nv Elektrische gluehlampe
JPH11312500A (ja) * 1998-04-28 1999-11-09 Toshiba Lighting & Technology Corp 電球および照明装置
EP1154464A1 (fr) * 2000-05-12 2001-11-14 General Electric Company Lampe à incandescence pour système d'illumination à haut rendement
WO2003075317A1 (fr) * 2002-03-05 2003-09-12 Mineta Company Ltd. Filament
WO2004019371A1 (fr) * 2002-08-08 2004-03-04 Patent-Treuhand-Gesell Schaft Für Elektrische Glühlampen Mbh Lampe electrique a incandescence

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2814823A1 (de) * 1977-04-18 1978-10-19 Philips Nv Elektrische gluehlampe
JPH11312500A (ja) * 1998-04-28 1999-11-09 Toshiba Lighting & Technology Corp 電球および照明装置
EP1154464A1 (fr) * 2000-05-12 2001-11-14 General Electric Company Lampe à incandescence pour système d'illumination à haut rendement
WO2003075317A1 (fr) * 2002-03-05 2003-09-12 Mineta Company Ltd. Filament
WO2004019371A1 (fr) * 2002-08-08 2004-03-04 Patent-Treuhand-Gesell Schaft Für Elektrische Glühlampen Mbh Lampe electrique a incandescence

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