WO2011004572A1 - Lighting device - Google Patents

Abstract

Disclosed is a lighting device (10) provided with: a light-transmitting tube-shaped cover (20), the tip (28) of which is closed and the base end of which has an opening (23); a light-emitting unit (30) that has a light-emitting substrate (32) with a light-emitting element (33) provided on one side thereof, said light-emitting substrate (32) being inserted through the opening (23) in the tube-shaped cover (20) and arranged along the long direction of the tube-shaped cover (20); and a lid part (60) that closes the opening (23) in the tube-shaped cover (20). A wiring section (63) that supplies power to the light-emitting unit (30) is provided in the lid part.

Description

Lighting device

Embodiment of this invention is related with the illuminating device which uses light emitting elements, such as a light emitting diode and LED.

In this type of lighting fixture in the past, a plurality of substrates provided with a large number of white light emitting diodes are used, the angle of each substrate is changed to form a polygonal surface, and light travels from the polygonal surface to each direction. What was comprised so that it might inject | emitted is known (refer patent document 1).

However, in the above-described lighting fixture, a casing-type translucent cover that covers the opening of the base is provided for the flat base on which the lighting circuit and the substrate are mounted. When mounting on the above-described substrate or the like, a large number of screws are required, and there is a problem that the number of work steps increases.

JP 2004-200102 A

The perspective view which shows the crime prevention light which concerns on one Embodiment of the illuminating device of this invention. The side view of the security light of FIG. The front view of the security light of FIG. The bottom view of the security light of FIG. FIG. 2 is a side sectional view of the security light of FIG. 1. The assembly perspective view of the crime prevention light which concerns on one Embodiment of the illuminating device of this invention. The perspective view which shows the principal part which concerns on fixation of the heat sink used for the crime prevention lamp which concerns on one Embodiment of the illuminating device of this invention. The perspective view which shows the principal part which concerns on fixation of the cylindrical cover and lid which are used for the crime prevention light which concerns on one Embodiment of the illuminating device of this invention. The partially cutaway perspective view which shows the lighting device used for the crime prevention light which concerns on one Embodiment of the illuminating device of this invention. The top view which shows the heat sink and the light emission board | substrate used for the crime prevention lamp which concerns on one Embodiment of the illuminating device of this invention. The top view which shows the light emission board | substrate used for the crime prevention lamp which concerns on one Embodiment of the illuminating device of this invention. The illumination distribution map of the light emission unit accommodated in the cylindrical cover at the time of attaching the security light which concerns on one Embodiment of the illuminating device of this invention to the attachment pole of A position.

An apparatus lighting device according to an embodiment of the present invention includes a light-transmitting cylindrical cover having a top closed and an opening on a base end side, and a light emitting substrate on which a light emitting element is disposed on one main surface side. A light emitting unit in which the light emitting substrate is inserted from the opening of the cylindrical cover and disposed along the longitudinal direction of the cylindrical cover, and the opening of the cylindrical cover is closed and power is supplied to the light emitting unit. And a lid provided with a wiring portion for supplying.

Hereinafter, embodiments of a lighting device according to the present invention will be described with reference to the accompanying drawings. In each figure, the same components are denoted by the same reference numerals, and redundant description is omitted. The external appearance of the security light 10 as embodiment of an illuminating device is shown by FIGS. 1-4. The security light 10 includes a translucent tubular cover 20 having a tubular shape with a flat side portion of a cone. The cylindrical cover 20 is integrally formed of a translucent resin such as acrylic or polycarbonate, added with a white pigment or a light diffusing material, and has a milky white appearance as a whole. The cylindrical cover 20 is a hollow body and has a cylindrical shape with the top portion 28 closed. In particular, the outer diameter dimension in the vertical direction of the cylindrical cover 20 has a higher rate of decreasing toward the top portion 28 than the outer diameter dimension in the width direction, and the cross-sectional shape of the cylindrical cover 20 near the top portion 28 is longer in the width direction. The taper is a flat and substantially elliptical shape.

FIG. 5 shows a sectional view of the security light 10, and FIG. 6 shows an assembly perspective view. Inside the cylindrical cover 20, a light emitting unit 30 and a lighting device 40 are provided. A lid 60 is attached to the cylindrical cover 20. The security light 10 is attached to an arm 50 bent in a “<” shape, and the arm 50 is attached to a utility pole or the like by means of a mounting bracket or the like.

The cylindrical cover 20 is composed of a light projecting portion 21 on the lower side and a shade portion 22 on the upper side in the installed state. The cylindrical cover 20 has an opening 23 at a connection portion with the lid 60, and a storage chamber 24 that is a space is provided from the opening 23 to the cylindrical cover 20 side. A portion surrounding the opening 23 in the cylindrical cover 20 is a tubular base portion 25. On the inner surface 29 of the base portion 25, a female screw 29a as a first engaging means is formed over the inner circumferential direction. The opening 23 is closed by the lid body 60. An end portion in a direction in which the storage chamber 24 side is viewed from the opening portion 23 is a distal end portion 28 of the cylindrical cover 20.

A strip-shaped protruding band portion 26 that protrudes outward and circulates around the outer periphery of the cylindrical cover 20 is formed at a boundary portion between the light projecting portion 21 and the shade portion 22 of the cylindrical cover 20. By projecting the protruding band portion 26 to the outside, the protruding band portion 26 functions as a ridge of the light projecting unit 21, and it becomes difficult for water droplets during rainfall to flow down to the light projecting unit 21. Dirt is difficult to adhere to. Further, the projecting band portion 26 is continuously formed around the longitudinal direction of the cylindrical cover 20, so that the mechanical strength of the cylindrical cover 20 is also improved.

A groove portion 27 is formed inside the protruding band portion 26. The groove portions 27 are provided in the width direction at least along the longitudinal direction of the cylindrical cover 20, and a pair of groove portions 27 are formed when viewed from the opening 23. The pair of grooves 27 guides the insertion of the light emitting unit 30 when the light emitting unit 30 is mounted inside the cylindrical cover 20, and is below the center position of the cross section perpendicular to the longitudinal direction of the cylindrical cover 20. It is arranged at the side position. Therefore, when the light emitting unit 30 is mounted on the cylindrical cover 20, the light emitting unit 30 is positioned below the center position of the cross section perpendicular to the longitudinal direction of the cylindrical cover 20.

At the front end portion 28 of the cylindrical cover 20, a bowl-shaped sandwiching portion 27 a that protrudes from the groove portion 27 toward the opening portion 23 is formed. For example, an aluminum radiating plate 31 is engaged with the sandwiching portion 27 a and the step portion 27 b of the groove portion 27. A recess 39 is formed in the center of the end of the heat sink 31 on the opening 23 side as shown in FIG. The concave portion 39 has a tapered portion 39b extending so as to spread from both ends of the innermost end portion 39a.

The lid body 60 has a cylindrical shape, and a cylindrical circumferential sleeve portion 61 is formed up to approximately half of the distal end side. The circumferential sleeve portion 61 is screwed into a female screw 29 a of the cylindrical cover 20. A male screw 62 which is the second engaging means is formed. At the center of the end surface of the lid 60 facing the opening 23 of the cylindrical cover 20, a cylindrical convex piece 65 is formed that fits in correspondence with the concave portion 39 of the heat radiating plate 31. The cylindrical convex piece 65 protrudes in the longitudinal direction of the cylindrical cover 20 and has an axis that passes through the upper part of the heat radiating plate 31 provided in the cylindrical cover 20. That is, the heat radiating plate 31 is provided on the lower side (light irradiation side) in the installed state from the position of the diameter of the cylindrical convex piece 65. As shown in FIG. 7, the diameter “a” of the cylindrical convex piece 65 is formed longer than the length “b” of the innermost end 39 a of the recess 39 in the heat radiating plate 31.

Accordingly, when the male screw 62 of the lid body 60 is screwed into the female screw 29a of the cylindrical cover 20 and the lid body 60 is rotated to push the lid body 60 into the cylindrical cover 20, the diameter of the cylindrical convex piece 65 is increased. The outer peripheral portion at a position lower than the position moves along the taper portion 39b of the concave portion 39 toward the innermost end portion 39a and works to press the heat sink 31 downward. The heat sink 31 is a step portion 27b of the groove portion 27. And the cylindrical convex piece 65 of the lid 60 are firmly fixed. The part located in the front-end | tip part 28 of the cylindrical cover 20 in the heat sink 31 is clamped between the clamping part 27a and the step part 27b of the groove part 27 as already stated (FIG. 5). Thereby, the storage chamber 24 of the cylindrical cover 20 is separated into the light projecting portion 21 side and the shade portion 22 side by the heat radiating plate 31.

As shown in FIG. 8, a mounting base 66 having a flat surface is formed on the lid body 60 coupled to the arm 50. A pair of holes 66a and 66a are formed in the mounting base 66. On the outer peripheral surface of the circumferential sleeve portion 61 in the lid body 60 and on the line segment orthogonal to the line segment in the center of the line segment connecting the holes 66a, 66a, the male screw 62 is cut off. A hole 67a and a square hole 67b are formed as means for confirming an appropriate coupling position between the lid 60 and the cylindrical cover 20 by rotation.

On the other hand, two ridges 22a and 22a, which are positioned below the both end surfaces of the arm 50 when the arm 50 is joined to the cylindrical cover 20, are adjacent to the base portion 25 and the shade portion 22 of the cylindrical cover 20. Is provided. Further, a hole 25a for inserting a coupling screw is formed in the groove 25b at the center position of the line segment virtually extended to the base portion 25 side. If the male screw 62 of the lid body 60 is screwed into the female screw 29a of the cylindrical cover 20 and the lid body 60 is rotated to push the lid body 60 into the cylindrical cover 20, it will eventually be difficult to rotate. Become.

Between the step part 61a formed in the front end side of the circumferential sleeve part 61 in the lid 60 and the inner wall corner part 25c that is a corner part where the base part 25 is directed toward the light projecting part 21 side, the O-ring 19 is provided. Since it is interposed (FIG. 5), the screwing can be advanced or returned even in a state where it is difficult to rotate. The base portion 25 of the cylindrical cover 20 is transparent or translucent. In the state where it is difficult to rotate, the hole 67a and the square hole 67b in the circumferential sleeve portion 61 of the lid 60 and the base portion 25 of the cylindrical cover 20 are provided. An appropriate coupling position between the lid body 60 and the cylindrical cover 20 can be confirmed by matching the holes 25a (or grooves 25b) formed in the. In this state, a screw can be inserted from the hole 25a of the base portion 25 and screwed into the hole 67a in the circumferential sleeve portion 61 to be fixed in an appropriate coupled state (FIG. 6). The holes 67a and the square holes 67b of the lid 60, the holes 25a (or grooves 25b) formed in the base portion 25 of the cylindrical cover 20 and the holes formed in the arm 50 are joined together with screws or the like and fixed. You can also

Thereby, the circumferential sleeve portion 61 of the lid 60 enters the storage chamber 24 side from the opening portion 23, and the O-ring 19 comes into contact with the inner wall corner portion 25c of the base portion 25. The O-ring 19 is pressed and elastically deformed between the inner wall corner portion 25c and the stepped portion 61a continuous from the circumferential sleeve portion 61, and the inside of the opening portion 23 has a watertight structure to ensure waterproofness. The O-ring is disposed on either the opening 23 of the cylindrical cover 20 or the lid body 60.

According to the present embodiment, the step portion 27 b for placing the heat sink 31 is formed inside the cylindrical cover 20, and the diameter of the cylindrical convex piece 65 is larger than the width of the recess 39 in the heat sink 31. Since it is formed long, a cylindrical convex piece 65 having an axial center passing through the upper part of the heat radiating plate 31 provided in the cylindrical cover 20 is fitted so as to press from the upper side in the concave portion 39 of the heat radiating plate 31, and is lit. The heat sink 31 on which the device 40 and the light emitting unit 30 are disposed can be firmly fixed in the cylindrical cover 20.

As shown in FIG. 6, a pocket 69, which is a hole into which a mounting bracket 68 having a rectangular planar shape and an appropriate thickness can be inserted, is formed below the mounting base 66. Screw holes 68 a and 68 a corresponding to the holes 66 a and 66 a of the mounting base 66 are formed in the mounting bracket 68. In addition, holes corresponding to the holes 66 a and 66 a of the mounting base 66 are formed at corresponding positions of the arm 50. Therefore, the mounting bracket 68 is inserted into the pocket 69, and the screws 51 and 51 are screwed into the screw holes 68a and 68a of the mounting bracket 68 through the holes 66a and 66a of the mounting base 66 and the arm 50. It can be fixed to the security light 10 (FIG. 6).

Also, the arm 50 allows the cylindrical cover 20 with the lid 60 mounted thereon to be attached to a pole such as a utility pole installed on the road surface. The arm 50 has a curved portion 55 in which a middle portion of a U-shaped metal piece is curved in a substantially L shape, and a through-hole of a mounting band wound around a power pole at the rear end portion of the curved portion. 56 and a dart hole 57 for locking the mounting screw is formed.

At this time, the long axis direction of the cylindrical cover 20 is inclined by about 20 ° to 50 ° with respect to the horizontal plane so that the top portion 28 side faces upward by the curved portion 55 of the arm 50. Accordingly, the opening of the cylindrical cover 20 is always directed downward by about 20 ° to 50 ° in the installed state of the cylindrical cover 20, and water droplets due to rain are unlikely to enter the opening 23, thereby improving the waterproof performance. . Furthermore, by directing the top portion 28 side of the cylindrical cover 20 upward, the efficiency of convection and heat exchange in the shade portion 22 having a relatively large surface area is improved, so that the heat dissipation characteristics can also be improved.

Here, the tip of the arm 50 is disposed so as to form a slight gap with the tips of the two ridges 22a, 22a provided in the cap portion 22. This tip portion functions to maintain sufficient strength even with a load when used as a scaffold for the worker on the pole.

A light-emitting substrate 32 that is, for example, a paper phenol base light-emitting substrate is attached to the heat radiating plate 31 as a insulating light-emitting substrate constituting the light-emitting unit 30 with screws 52 through screw holes 37a. A lighting device 40 is provided on the surface of the heat radiating plate 31 to which the light emitting substrate 32 is not attached. The light emitting substrate 32 is attached to the heat radiating plate 31 with screws 47 through screw seats 46 and screw holes 37. .

As shown in FIG. 9, the lighting device 40 includes a rectangular parallelepiped housing 40a in which electronic components 43 such as a capacitor C, a transformer T, and a coil L mounted on a printed circuit board 42 are mounted. The electronic circuit which comprises etc. produces DC voltage, and supplies it to LED33. The printed circuit board 42 is fixed by locking claws 44 and 45 at a predetermined distance from the top board 41c. That is, the locking claws 44 and 45 are each formed in a corner near the top plate 41a of the large side plate 41b, and the side plate 41b is formed by punching, leaving one vertical side in a quadrangle. The window frames 44a and 45a are formed by punching, and the locking claws 44 and 45 extending in a square shape from the sides 44b and 45b of the windows on the different sides are bent inward by a jig to sandwich the printed circuit board 42 from above and below. Fix it.

The housing 40 a is fixed to the heat radiating plate 31 with screws 47 through screw seats 46 and screw holes 37 in a state where the edge 41 a surrounding the opening of the housing 40 a is in contact with the heat radiating plate 31. It arrange | positions so that about 2/3 of the longitudinal direction of the housing | casing 40a may exist in the recessed part 39 side from the longitudinal direction centerline of the heat sink 31 (FIG. 10). Thereby, the lighting device 40 is disposed at a position in the heat radiating plate 31 in consideration of the thermal balance.

That is, since the security light 10 is attached to the utility pole or the like in a state in which the front end portion 28 side of the cylindrical cover 20 is tilted so as to be higher than the lid body 60 side, the heat generated by the LED 33 is generated. Heading to the tip 28 of the cylindrical cover 20. For this reason, an appropriate heat countermeasure is taken without providing a heat source such as the lighting device 40 at a portion of the heat radiating plate 31 located on the tip portion 28 side of the cylindrical cover 20. The dimension from the heat sink 31 to the head of the electronic component 43 is a necessary and sufficient insulation distance, and the heat generated by the electronic component 43 does not affect the heat sink 31 (is not thermally coupled). It has become.

A fixed connector CN1a for receiving power is provided at one end in the longitudinal direction of the printed circuit board 42, and a fixed connector CN2a for supplying power is provided at the other end of the printed circuit board 42 in the longitudinal direction. Is provided. An insertion / removal connector coupled to the fixed connector CN1a is attached to the tip of the power supply line on the power supply side shown in FIG.

The light emitting unit 30 includes a light emitting substrate 32 and an LED 33 which is a light emitting element, as shown in FIG. As shown in FIG. 11, a plurality (eight in this case) of LEDs 33 are mounted at a predetermined interval on the main surface side where the wiring pattern 34 made of copper foil is formed. On the back side, not shown, is a single-sided substrate on which no wiring pattern is formed. In addition to the light emitting diode, a solid light emitting element that can be disposed on a light emitting substrate such as an organic EL is applied as the light emitting element.

The wiring pattern 34 has a relatively large area because it has a function of transferring the heat generated by the LED 33 through the lead terminal and the copper foil pattern and radiating heat from the surface to the outside by conduction and conduction. , And provided in 8 areas divided by the insulating pattern 35. The wiring pattern 34 includes lands that connect the LEDs 33 at appropriate positions via the insulating pattern 35. A capacitor C is electrically connected to each of the eight LEDs 33 in parallel. Two adjacent wiring patterns 34 are provided with power lands 36, 36, and power is supplied to eight LEDs 33 connected in series by eight wiring patterns 34. The power supply lands 36 and 36 are positioned at the positions of the through holes 16 of the heat radiating plate 31. The screw hole 37 a of the light emitting substrate 32 is for attaching to the heat radiating plate 31 with the screw 52, and the screw hole 37 is used for fixing the housing 40 a of the lighting device 40 with the screw 47.

As shown in FIGS. 5 and 6, a power distribution portion 63 protruding in a cylindrical shape toward the lid body 60 is formed on the back surface of the columnar convex piece 65 in the lid body 60. A waterproof bush 48 is fitted to the power distribution unit 63 and is fixed to the power distribution unit 63 by a mounting bracket 49 and a screw 49a. A power supply line for supplying power is inserted into the waterproof bush 48 and power is supplied to the lighting device 40.

As shown in FIGS. 6 and 11, the lead wires connected to the power supply lands 36, 36 of the light emitting substrate 32 pass through the through holes 36a, 36a of the lands 36, 36 to the through holes 16. An insertion / removal connector for coupling to the fixed connector CN2a is attached to the tip.

The power line is fixed to the heat radiating plate 31 by a resin band in a portion near the lid 60 of the insertion / extraction connector. This position is close to the fixed connector CN1a of the lighting device 40, and the insertion / removal connector provided at the tip of the power supply line is coupled to the fixed connector CN1a in the housing 40a.

The insertion / extraction connector is pulled out through the through hole 16 formed in the heat sink 31 to the surface of the heat sink 31 to which the lighting device 40 is attached. The through hole 16 is formed at a position close to the fixed connector CN2a of the lighting device 40. For this reason, the lead wire can be shortened, and the insertion / extraction connector connected to the lead wire can be easily coupled to the fixed connector in the housing 40a.

According to the present embodiment, as shown in FIG. 3, the light emitting unit 30 is accommodated in the cylindrical cover 20 so as to be positioned below the center position 47 of the cross section perpendicular to the longitudinal direction of the cylindrical cover 20. Yes. Thereby, the inner volume of the accommodation space 24A on the shade portion 22 side of the cylindrical cover 20 is divided by the light emitting unit 30 so as to be larger than the inner volume of the accommodation space 24B on the light projecting portion 21 side. Accordingly, the accommodation space 24A on the side of the shade 22 is large in terms of heat capacity, and sufficient convection is performed. Therefore, heat exchange using the outer surface of the shade 22 for heat transfer from the case of the radiator plate 31 and the lighting device 40 is performed. Heat can be dissipated well by the action. In addition, an optical sensor for detecting ambient brightness is disposed on the other surface side opposite to the one surface side of the heat radiating plate 31 to which the light emitting unit 30 is attached.

On the other hand, the accommodating space 24B on the light projecting unit 21 side is relatively narrow, and the distance between the light emitting diode 33 mounted on the light emitting substrate 32 of the light emitting unit 30 and the light projecting unit 21 of the cylindrical cover 20 is short. Thus, the optical characteristic that the emitted light of the light emitting unit 30 is efficiently irradiated from the light projecting unit 21 in a desired direction can be obtained. The distance between the light emitting diode 33 of the light emitting unit 30 and the light projecting portion 21 of the cylindrical cover 20 is such that the light emitted from the light projecting portion 21 does not cause glare and the light emitting diode 33 that is the light source has a feeling of crushing. It is desirable to keep some distance.

Further, the side edges of the heat radiating plate 31 are placed and attached to the pair of grooves 32, and the side edges of the heat radiating plate 31 are stretched outside the outer peripheral surface of the light projecting portion 21 of the cylindrical cover 20. Since the light projecting portion 21 side and the shade portion 22 side are substantially separated by arranging so as to project, the light from the light emitting diode 33 of the light emitting unit 30 is accommodated in the accommodation space 24A on the shade portion 22 side of the cylindrical cover 20. I don't get into it. Accordingly, since the photosensor is not affected by the light of the light emitting diode 33, malfunction of the photosensor can be prevented and light damage can be prevented.

Further, as described above, the long axis direction of the cylindrical cover 20 is attached to the pole so that the top portion 28 side is directed upward by the curved portion 55 of the arm 50, and specifically, it is attached to the pole. It is installed at an angle of 20 ° to 50 °, preferably 25 ° to 40 °.

FIG. 12 is an illuminance distribution diagram of the light emitting unit 30 accommodated in the cylindrical cover 20 when the lighting device 10 is attached to the mounting pole at the A position. FIG. 12A is an angle of the light emitting unit 30 with respect to the horizontal plane. FIG. 12B is an illuminance distribution diagram when the angle of the light emitting unit 30 is 25 ° with respect to the horizontal plane, and FIG. 12C is an illuminance distribution diagram when the angle of the light emitting unit 30 is 55 ° with respect to the horizontal plane. FIG.

In FIG. 12, the height of the light emitting unit 30 from the road surface (irradiation surface) is 4.5 m, the road width is 5 m, and the arrangement interval of the lighting devices (security lights) 10 is 10 m. The illuminance distribution surface of the irradiation surface at 5 m is shown. Since the adjacent mounting pole is positioned at the position B, the emitted light from the adjacent lighting device 10 overlaps the irradiation surface at 1.5 m from the road surface.

When the illuminance distribution described in FIG. 12 is measured at different angles, in order to obtain a high degree of uniformity of the irradiated surface at 1.5 m from the road surface, it is about 20 ° to 50 °, preferably 25 ° with respect to the horizontal plane. It was confirmed that the light emitting unit 30 should be installed with an inclination of ˜40 °.

According to the embodiment of the present invention, since the lid body 60 is disposed below the center position of the cross section perpendicular to the longitudinal direction of the cylindrical cover 20, the light emitting diode 33 mounted on the one surface side of the light emitting substrate 32. The upward light from the light source is suppressed, a light pollution countermeasure effect is obtained, and the temperature of the light emitting unit 30 can be reduced. Further, the loss of optical control can be reduced, and the optical sensor for detecting the illuminance installed on the other surface side of the light emitting substrate 32 is not affected by the light of the light emitting diode 33, thereby preventing the malfunction of the optical sensor. be able to. In addition, since the light emitting unit 30 is installed at an angle of about 20 ° to 50 ° with respect to the horizontal plane, the gradient of luminance and illuminance due to the crossing direction of the road can be suppressed, and a high degree of uniformity can be obtained. Since it is located on the lower side, that is, in the direction of gravity, entry of rain or the like can be suppressed.

Furthermore, according to the embodiment of the present invention, the circumferential sleeve portion 61 of the lid body 60 is provided with means capable of confirming an appropriate coupling position between the lid body 60 and the cylindrical cover 20 by the rotation of the lid body 60. Therefore, the lid 60 can be rotated and fixed to the appropriate coupling position. Therefore, the radiator plate 31 in which the lighting device 40 and the light emitting unit 30 are disposed is inserted into the cylindrical cover 20, and the lid body 60 is screwed into the opening 23 of the cylindrical cover 20, whereby the radiator plate The cylindrical projecting piece 65 of the lid 60 is fitted in correspondence with the recess 39, and the heat radiating plate 31 in which the lighting device 40 and the light emitting unit 30 are disposed is simply connected to the lid 60. Can be appropriately fixed in the cylindrical cover 20.

In the present embodiment, the shape of the other part is not limited as long as the cylindrical cover is a hollow body in which the cylindrical lid body 60 is screwed into the opening 23. Moreover, the area | region where light is inject | emitted from the light emitting element arrange | positioned in the cylindrical cover 20 should just be translucent, and all do not need to be translucent.

The cylindrical cover 20 has a cylindrical structure in which at least the light projecting portion 21 has translucency and an accommodation space is formed inside, and the accommodation space does not communicate with the outside except for the opening 23. Have. The cylindrical cover 20 has a shape with a long dimension in the direction from the opening 23 toward the tip, and is inserted from the opening 23 with one surface side of the light emitting unit facing downward. And the position where the light emission unit 30 is accommodated is below the center position of the cross section orthogonal to the longitudinal direction of the cylindrical cover 20. Thereby, the inside of the cylindrical cover 20 is divided by the light emitting unit 30, and the space on the other surface side where the heat radiating plate 31 is disposed is formed wider than the space on the one surface side where the light emitting element 33 is disposed. As described above, the cylindrical cover 20 has a shape having a long dimension in the direction from the opening 23 toward the distal end side, but other shapes are optical in which the emitted light of the light emitting unit 30 is irradiated in a desired direction. There is no particular limitation as long as the characteristics can be obtained.

In the present embodiment, the cylindrical cover 20 is integrally formed of a light-transmitting resin such as acrylic or polycarbonate, and thus has a light-transmitting property as a whole. However, the light emitting unit 30 is formed by a pair of grooves inside the cylindrical cover 20. Therefore, it is difficult for the other surface side of the light emitting unit 30 to be irradiated with the emitted light of the light emitting element, and desired light distribution characteristics can be obtained. The entire peripheral edge of the light emitting unit 30 may not be inserted into the pair of grooves, or a part thereof may be inserted.

In the present embodiment, “the lid 60 is below the top of the cylindrical cover 20” means that the top of the cylindrical cover 20 is disposed above the lid 60, and the lid 60 is the cylindrical cover 20. It is located below the top of the. Preferably, it means that the long axis direction of the cylindrical cover 20 (the surface on the one surface side of the light emitting unit 30) is oriented downward by about 20 ° to 50 ° with respect to the horizontal direction.

The light emitting unit 30 has at least a light emitting substrate 32 and has a structure that can be disposed in the cylindrical cover 20, and the light emitting substrate 32 itself may constitute the light emitting unit 30.

Although several embodiments have been described above, these embodiments are merely shown as examples, and are not intended to limit the scope of the present invention. Indeed, the novel devices described herein may be embodied in a variety of other forms, and may be further modified in the form of devices described herein without departing from the spirit or spirit of the invention. May be omitted, replaced, and changed. The appended claims and their equivalents are intended to include such forms or modifications as would fall within the scope and spirit or spirit of the present invention.

Citation of related application

This application is filed on July 7, 2009, prior Japanese Patent Application No. 2009-160833, Japanese Patent Application No. 2009-181095 filed on August 3, 2009, and September 24, 2009. Based on and benefit from the priority interests of Japanese Patent Application No. 2009-219104, the entire contents of which are hereby incorporated by reference.

DESCRIPTION OF SYMBOLS 10 Crime prevention light 20 Cylindrical cover 25 Base part 26 Projection band part 30 Light emission unit 31 Heat sink 32 Light emission board 33 Light emitting element 40 Lighting device 50 Arm 60 Cover body 65 Cylindrical convex piece

Claims (13)

A translucent cylindrical cover having a clogged top and an opening on the proximal side;
A light emitting unit having a light emitting substrate disposed on one side, the light emitting substrate being inserted from an opening of the cylindrical cover and disposed along a longitudinal direction of the cylindrical cover;
A lid provided with a wiring portion for closing the opening of the cylindrical cover and supplying power to the light emitting unit;
An illumination device comprising:
The light-emitting unit includes a heat radiating plate having a light-emitting substrate attached on one surface side, and a lighting device for lighting light-emitting elements provided on the other surface side of the heat radiating plate. The lighting device described.
The lighting device according to claim 1, wherein a light sensor that senses ambient brightness is disposed on the other surface side of the light emitting unit.
A translucent cylindrical cover having a clogged top and an opening on the proximal side;
A light emitting substrate having a light emitting element disposed on one surface side and a heat radiating plate mounted on the other surface side of the light emitting substrate, the heat radiating plate being inserted from an opening of the cylindrical cover; A light emitting unit disposed along the longitudinal direction;
A lid provided with a wiring portion for closing the opening of the cylindrical cover and supplying power to the light emitting unit;
The light emitting unit is inserted into the cylindrical cover from the opening with the one surface side of the heat radiating plate on which the light emitting substrate is mounted facing downward, and the center of the cross section perpendicular to the longitudinal direction of the cylindrical cover The lighting device is housed so as to be positioned below the position.
The lighting device according to claim 4, wherein the light emitting unit includes a lighting device for lighting a light emitting element provided on the other surface side of the heat radiating plate.
A translucent cylindrical cover in which the top is closed and has an opening on the base end side, and first engagement means is formed on the inner wall of the opening;
A light emitting unit having a light emitting substrate disposed on one side, the light emitting substrate being inserted from an opening of the cylindrical cover and disposed along a longitudinal direction of the cylindrical cover;
A lighting device for lighting the light emitting element by a housing;
The light emitting substrate is disposed on one surface side, the lighting device is disposed on the other surface side, and a heat sink having a recess formed on the end surface on the opening side,
Second engagement means that is screwed into the first engagement means of the cylindrical cover is formed on a substantially cylindrical circumferential sleeve portion that serves as a lid for the opening in the cylindrical cover, and the heat dissipation plate A lid formed with a cylindrical convex piece that fits in correspondence with the concave portion of
An illumination device comprising:
On the inner side of the cylindrical cover, a step for placing the heat sink is formed,
The cylindrical convex piece has an axial center that extends in the longitudinal direction of the cylindrical cover and passes through the upper part of the heat radiating plate provided in the cylindrical cover, and the diameter of the cylindrical convex piece is The lighting device according to claim 6, wherein the lighting device is formed larger than the width of the recess.
The lighting device according to claim 6, wherein the circumferential sleeve portion of the lid body is provided with means capable of confirming an appropriate coupling position between the lid body and the cylindrical cover by the rotation of the lid body. .
The opening of the cylindrical cover has a circular shape, and an O-ring is disposed between the opening and the lid. The lighting device described.
The cylindrical cover is integrally formed of a translucent resin, and a pair of grooves are formed on the inner side along the longitudinal direction, and the peripheral edge of the light emitting unit is inserted into the groove to emit the light. The lighting device according to claim 1, wherein the lighting device supports the unit.
The lighting device according to any one of claims 1 to 8, wherein the lid body is attached so as to be inclined below a top portion of the cylindrical cover.
The lighting device according to claim 4, wherein an optical sensor that senses ambient brightness is arranged on the other surface side of the heat radiating plate.
The lighting device according to claim 1 or 4, wherein the lid is attached to an opening of the cylindrical cover by screwing.

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