WO2013183204A1 - Illumination instrument - Google Patents

Description

lighting equipment

The present invention relates to a luminaire using a straight tube lamp as a light source.

In recent years, with the increase in the luminous efficiency of LEDs (light emitting diodes), it has become possible to use LEDs with low power consumption and long life as light sources of lighting devices. For example, in Patent Document 1, an LED substrate is held inside a straight tube type outer tube body, and two ends of the outer tube body are provided with two bases to be attached to the existing straight tube type fluorescent light fixtures A lighting device (LED lamp) is disclosed.

JP, 2009-43447, A

By the way, there is a straight tube type LED lamp in which a ground terminal is provided at a base of one side. For example, the LED lamps in JEL 801 “Straight-tube type LED lamp system with L-shaped pin cap GX16t-5 (for general lighting)” standardized by the Japan Light Bulb Industry Association standard have a pair of power supplies for one cap. A terminal pin is provided, and the other base is provided with a terminal pin for grounding. And in the lighting fixture which uses such an LED lamp as a light source, as shown in FIG. 14, the socket for electric power feeding (not shown) with which the base for electric power feeding is mounted, and the earth with which the base for earthing is mounted A socket 100 is attached to the instrument body (not shown).

Here, the ground socket 100 includes a conductive plate (conductive member) 101 to which a lamp pin (not shown) of the LED lamp contacts and connects to the inside, and the conductive plate 101 is connected to the instrument body and grounded There is a need. The ground socket 100 is provided with a wire insertion hole 100A into which one end of the lead wire 102 can be inserted, and the conductive plate 101 is connected at one end of the lead wire 102 inserted into the wire insertion hole 100A. A connecting terminal (not shown) is provided. Further, at the other end of the lead wire 102, a crimp terminal 102A for screwing to the instrument body 101 is provided.

Hereinafter, a method of connecting the conductive plate 101 of the grounding socket 100 to the instrument body will be described. First, one end of the lead wire 102 is inserted into the wire insertion hole 100A of the ground socket 100, and one end of the lead wire 102 is connected to the quick connection terminal portion of the conductive plate 101. Next, the crimp terminal 102A provided at the other end of the lead wire 102 is brought into contact with any surface of the instrument body, and the crimp terminal 102A is screwed to the instrument body. Thus, the conductive plate 101 of the grounding socket 100 can be electrically connected to the instrument body and grounded.

However, in the case of connecting the conductive plate 101 of the grounding socket 100 to the instrument body as described above, it is necessary to use a lead wire 102 to screw it to the instrument body. In this case, it is necessary to provide a crimp terminal 102A at the end of the lead wire 102, and in the case of screwing, it is necessary to take into consideration the loosening of the screw. There is a problem that the connection work is troublesome.

The present invention has been made in view of the above-mentioned points, and provides a lighting fixture capable of easily electrically connecting the grounding member of the grounding socket to the fixture body without using a lead and grounding the same. The purpose is

The lighting fixture of the present invention comprises a grounding socket to which a lamp base for grounding is connected, and a fixture body for holding the grounding socket. The grounding socket has a conductive member housed therein and a slit provided on the outer wall thereof. The conductive member is configured to be electrically connected to a ground terminal provided on the base for grounding. The instrument body has a holding piece for holding the grounding socket by being inserted into the slit. The holding piece has a zero potential. The conductive member has a contact piece exposed to the outside through the slit and elastically contacting the holding piece inserted in the slit.

In this luminaire, the slit has an open end at one end in the longitudinal direction, the holding piece is inserted into the slit through the open end, and the conductive member is in contact with the holding piece by the contact piece Preferably, the projection has a projection closer to the open end than the projection, and the projection has a blade for scraping the surface of the holding piece.

In this luminaire, preferably, a plurality of the protrusions are provided along the longitudinal direction of the slit.

According to the present invention, when the holding piece of the instrument body is inserted into the slit of the grounding socket, the contact piece exposed to the slit comes in pressure contact with the holding piece (contacts with an elastic force). Therefore, according to the present invention, the conductive member of the grounding socket can be easily electrically connected to the instrument body and grounded without using the lead wire only by attaching the grounding socket to the holding portion of the instrument body.

It is an exploded perspective view showing Embodiment 1 of a lighting fixture concerning the present invention. FIG. 1 is a perspective view of Embodiment 1; FIG. 2 is a perspective view of a conductive plate in Embodiment 1; FIG. 2 is an exploded perspective view of a grounding socket in the first embodiment. FIG. 2 is a schematic view of the LED lamp in Embodiment 1. In Embodiment 1, it is a figure which shows the method to attach an LED lamp to the socket for earthing | grounding. FIG. 10 is a perspective view of a grounding socket and a holding portion in a modification of Embodiment 1; FIG. 10 is an exploded perspective view of a grounding socket in a modification of Embodiment 1; It is a disassembled perspective view of the socket for earthing | grounding in Embodiment 2 of the lighting fixture which concerns on this invention. FIG. 10 is a perspective view of a grounding socket in a second embodiment. It is the elements on larger scale of the area | region shown with the broken line A of FIG. It is a figure which shows the contact state of the electrically conductive board in Embodiment 2, and a holding part. FIG. 20 is a perspective view of a conductive plate in another configuration of Embodiment 2. It is a perspective view showing the socket for grounding in the conventional lighting fixture.

(Embodiment 1)
Hereinafter, Embodiment 1 of the lighting fixture which concerns on this invention is demonstrated using drawing. In the following description, the vertical and horizontal directions and the front and back direction are defined by the arrows shown in FIG. In the present embodiment, as shown in FIGS. 1 to 6, a grounding socket 1 and a power feeding socket (not shown) to which the straight tube LED lamp 5 can be attached, and a conductive plate housed in the grounding socket 1 (Conductive member) 4 and an instrument body 6 to which each socket is attached. The power supply socket is well known in the prior art, so the detailed description is omitted here.

The grounding socket 1 is formed of a box having an outer shell formed in a U shape, and as shown in FIG. 4, the resin cover 2 having an open rear surface and the resin body 3 having an open front surface are assembled. Configured

As shown in FIG. 4, a cylindrical storage protrusion 20 with a bottom is integrally formed on the front surface of the cover 2 so as to protrude forward. Inside the housing projection 20, the respective holding pieces 40A of the conductive plate 4 described later are housed. As shown in FIG. 4, the housing projection 20 is provided with a pin insertion hole 20A that opens from the lower surface to the front surface. A ground terminal 52A of the LED lamp 5, which will be described later, can be slidably inserted into the pin insertion hole 20A along the vertical direction.

At the lower end portion of the rear surface of the cover 2, as shown in FIG. 4, a first locking piece 2 </ b> A projecting rearward is integrally formed. The first locking piece 2A is flexible along the vertical direction, and can be hooked on the periphery of a recess (not shown) of the body 3 described later. In addition, a cylindrical positioning protrusion 2B projecting upward is integrally formed on the upper side of the storage protrusion 20 on the rear surface of the cover 2 (see FIG. 9).

At the upper end portion of the cover 2, as shown in FIG. 4, a rectangular parallelepiped base 21 projecting forward is integrally formed. As shown in FIG. 4, a pair of electric wire insertion holes 21A through which one end of a lead wire (not shown) can be inserted are formed through the front surface of the base portion 21. On the left and right side walls of the cover 2, as shown in FIG. 4, long plate-like second locking pieces 21 </ b> B projecting backward are integrally formed. Each second locking piece 21B is flexible along the left-right direction, and each tip projects outward in the left-right direction. The tip end of each of the second locking pieces 21B can be inserted into each locking hole 34 of the body 3 to be described later, and can be hooked on the periphery of each locking hole 34.

As shown in FIG. 4, the inner bottom portion of the body 3 is provided with a first partition 30 and a second partition 31 having a rectangular plate shape projecting forward. As shown in FIG. 4, the partition walls 30 and 31 are provided at predetermined intervals in the vertical direction. Further, the height of the second partition 31 in the front-rear direction is lower than the height of the first partition 30 in the front-rear direction. On the upper end surface of the first partition wall 30, the respective clamping pieces 40 of the conductive plate 4 described later are placed. That is, when the conductive plate 4 is stored in the grounding socket 1, each sandwiching piece 40 contacts the upper end surface of the first partition wall 30. Moreover, the connection piece 41 of the electrically conductive board 4 mentioned later is mounted in the upper end surface of the 2nd partition 31. As shown in FIG. That is, when the conductive plate 4 is housed in the ground socket 1, the connection piece 41 abuts on the upper end surface of the second partition wall 31. Thereby, the conductive plate 4 can be positioned in the body 3.

As shown in FIG. 4, on the left and right side walls of the upper end of the body 3 are provided first slits 32 along the front-rear direction, into which holding pieces 61 of holding portions 60 described later are slidably inserted. That is, the outer wall of the grounding socket 1 is provided with a slit (first slit 32). At the front end of each first slit 32, a notch 32A is provided so that each contact piece 42A of the conductive plate 4 described later can be disposed in each first slit 32. By arranging the contact pieces 42A in the notches 32A, the contact pieces 42A are positioned on the track of the holding pieces 61. Further, as shown in FIG. 6, on the rear wall of the upper end portion of the body 3, a second slit 33 for inserting a rear end portion of a holding portion 60 described later is provided along the left-right direction.

The lower end portion inside the body 3 is formed with a recess (not shown) in which the first locking piece 2A of the cover 2 is fitted. Further, as shown in FIG. 4, locking holes 34 for inserting the second locking pieces 21 </ b> B of the cover 2 are respectively penetrated in left and right side walls of the upper end portion of the body 3. Therefore, the first locking piece 2A of the cover 2 is fitted into the recess of the body 3 and locked to the periphery thereof, and the second locking pieces 21B are inserted into the locking holes 34 of the body 3 By locking to the peripheral edge, the cover 2 and the body 3 can be coupled.

The conductive plate 4 is made of an elastic metal plate. As shown in FIG. 3, the conductive plate 4 includes a pair of sandwiching pieces 40 sandwiching a ground terminal 52A described later, and a connecting piece 41 connecting upper ends of the sandwiching pieces 40 to each other. At the central portion in the longitudinal direction of each holding piece 40, as shown in FIG. The ground terminal 52A is mechanically held by holding a head 52B of a ground terminal 52A described later between the holding portions 40A. Then, the ground terminal 52A is electrically connected to the conductive plate 4. That is, the conductive plate 4 is electrically connected to the ground terminal 52A provided on the ground cap 52.

As shown in FIG. 3, a circular through hole 41 </ b> A is provided in the center of the connection piece 41. The conductive plate 4 can be positioned relative to the cover 2 by inserting the positioning projection 2B of the cover 2 into the through hole 41A.

At the upper end portion of the connection piece 41, as shown in FIG. 3, a connection portion 42 for electrically connecting the conductive plate 4 to the tool main body 6 described later is integrally formed. As shown in FIG. 3, contact pieces 42A are integrally formed on the left and right end portions of the connection portion 42, respectively. Each contact piece 42A is bent so that the cross section viewed in the vertical direction has a V-shape. Each contact piece 42 generates an outward elastic force in the left and right direction by being deformed when a force is applied in the inward direction in the left and right direction. The contact pieces 42A are brought into pressure contact with each holding piece 61 of the tool main body 6 described later (contact with elastic force). Each contact piece 42A is formed so as to be wider along the vertical direction in order to absorb the tolerance of the width dimension of each holding piece 61 in the vertical direction. For this reason, since the contactable area of each contact piece 42A becomes large, each holding piece 61 is easily pressed (contacted with an elastic force) to each contact piece 42A.

As shown in FIG. 3, a pair of lock pieces 42 </ b> B having a quick connection terminal structure for connecting one end of the lead wire is provided on the upper portion of the connection portion 42. As shown in FIG. 4, these lock pieces 42B are arranged to face the respective wire insertion holes 21A of the cover 2 when the conductive plate 4 is stored in the grounding socket 1. In addition, since a lead wire is not used fundamentally in this embodiment, in order to connect the end of a lead wire, each locking piece 42B is not used. Of course, in order to ground the conductive plate 4 more reliably, the connection method using lead wires may be used in combination with the connection method of the present embodiment described later, as in the conventional example.

As shown in FIG. 5, the LED lamp 5 includes a straight tube-shaped lamp body 50. At both ends in the longitudinal direction of the lamp main body 50, as shown in FIG. 5, a power supply cap 51 and a ground cap 52 are provided. As shown in FIG. 5, a pair of plate-like feed terminals 51 </ b> A is provided in a protruding manner on the feed cap 51. Further, as shown in FIG. 5, a round bar-like ground terminal 52A is provided in a protruding manner on the grounding cap 52. As shown in FIG. 6, an oblong head 52B is integrally formed at a front end of the ground terminal 52A in a plan view.

Here, a method of attaching the grounding cap 52 of the LED lamp 5 to the grounding socket 1 will be described with reference to FIG. First, the grounding terminal 52A of the grounding cap 52 is inserted into the pin insertion hole 20A of the grounding socket 1 with the longitudinal direction of the head 52B extending in the vertical direction. Then, by rotating the head 52B clockwise or counterclockwise, both end portions in the longitudinal direction of the head 52B are held between the holding portions 40A of the conductive plate 4. Thereby, the base for grounding 52 can be attached to the socket for grounding 1. The method for attaching the power supply cap 51 of the LED lamp 5 to the power supply socket is known in the prior art, and thus the description thereof is omitted here.

Although not shown, a substrate on which a plurality of LEDs are mounted is housed inside the lamp body 50, and the anodes and the cathodes of the LEDs are electrically connected to the pair of power supply terminals 51A. Therefore, the LED lamp 5 can be lighted by attaching the power supply base 51 to the power supply socket and supplying the lighting power to each LED through each power supply terminal 51A. Although the LED lamp 5 is employed in the present embodiment, any other lamp may be used as long as it has a base 52 for grounding.

The fixture body 6 is formed of a long metal box along the longitudinal direction of the LED lamp 5. At both ends in the longitudinal direction of the instrument main body 6, as shown in FIGS. 1 and 2, holding portions (attachment portions) 60 for holding (attaching) the power feeding socket and the grounding socket 1 are provided. . In FIGS. 1 and 2, among the holding portions 60, only the holding portion 60 for holding the ground socket 1 is illustrated. As shown in FIG. 1, the holding portion 60 has a holding hole (attachment hole) 62 formed by cutting out in a rectangular shape from the front end to the rear end. At the inner peripheral edge of the holding hole 62, a pair of holding pieces (attachment pieces) 61 for holding the grounding socket 1 are integrally formed. Each holding piece 61 protrudes from the left and right sides of the inner peripheral edge of the holding hole 62 in a direction approaching each other. Each holding piece 61 has a zero potential. This is because each holding piece 61 is a part of the metal tool body 6. Note that "zero potential" does not necessarily mean that the potential is absolutely zero, and it may be approximately zero.

Hereinafter, a method for attaching the grounding socket 1 to the instrument body 6 and a method for electrically connecting the conductive plate 4 to the instrument body 6 for grounding will be described. First, as shown in FIG. 1, the holding pieces 61 of the holding portion 60 are aligned with the positions of the first slits 32 of the grounding socket 1. Then, the front ends of the holding pieces 61 are inserted into the first slits 32 from one end (opening end) of the first slits 32 in the longitudinal direction, and the grounding socket 1 is slid backward. As a result, each holding piece 61 is fitted to each first slit 32, and the rear end of the holding portion 60 is fitted to the second slit 33 to attach the grounding socket 1 to the holding portion 60. Can be done (see Figure 2). That is, each holding piece 61 holds the grounding socket 1 by being inserted into each first slit 32.

Here, when sliding the grounding socket 1 rearward, the contact pieces 42A of the conductive plate 4 exposed to the outside through the first slits 32 are pressed by the holding pieces 61 and deformed inward in the left-right direction. Do. As a result, an outward elastic force in the left-right direction is generated from each contact piece 42A, so that each contact piece 42A is in pressure contact with each holding piece 61 (contacts with an elastic force). Therefore, the conductive plate 4 can be electrically connected to the instrument body 6 via the contact pieces 42A and the holding pieces 61 and grounded.

As described above, in the present embodiment, when the holding pieces 61 of the tool main body 6 are inserted into the first slits 32 (slits) of the grounding socket 1, the contact pieces 42A exposed to the first slits 32. Are in pressure contact with the holding pieces 61 (contact by elastic force). Therefore, in the present embodiment, only by attaching the grounding socket 1 to the holding portion 60 of the instrument main body 6, the conductive plate 4 (conductive member) of the grounding socket 1 can be easily electrically Can be connected and grounded.

By the way, as shown in FIG. 8, you may comprise the contact piece 42A of the electrically conductive board 4 by contact piece 42A 'with a small width dimension of an up-down direction. Hereinafter, this configuration will be described with reference to FIGS. Note that the basic configuration is the same and has already been described, so the same reference numerals are given to the common portions and the description will be omitted.

Each contact piece 42A 'generates an outward elastic force in the left-right direction by being deformed when a force is applied in the left-right direction in the same manner as the contact piece 42A. Each contact piece 42A 'has a width in the short direction (vertical direction) slightly smaller than the width in the short direction (vertical direction) of each first slit 32. Therefore, each contact piece 42A 'is disposed to enter each first slit 32.

Hereinafter, a method of electrically connecting the conductive plate 4 to the instrument body 6 and grounding it will be described with reference to FIG. The holding portion 60 ′, the holding pieces 61 ′, and the holding holes 62 ′ in the same figure are obtained by simplifying the illustration of the holding portion 60, the holding pieces 61, and the holding holes 62 in FIG. 1. First, the holding pieces 61 'of the holding portion 60' are aligned with the positions of the first slits 32 of the grounding socket 1. Then, the ground socket 1 is slid rearward so that the front end portions of the holding pieces 61 ′ are inserted into the first slits 32 from one end (opening end) of the first slits 32 in the longitudinal direction.

Here, when sliding the grounding socket 1 backward, the contact pieces 42A 'of the conductive plate 4 exposed to the first slits 32 are pressed by the holding pieces 61' and deformed inward in the left-right direction. Do. As a result, an outward elastic force in the left-right direction is generated from each contact piece 42A ', so that each contact piece 42A' is in pressure contact with each holding piece 61 '(contacts with an elastic force). Therefore, the conductive plate 4 can be electrically connected to the instrument body 6 via the contact pieces 42A 'and the holding pieces 61 to be grounded.

Second Embodiment
Hereinafter, Embodiment 2 of the lighting fixture which concerns on this invention is demonstrated using drawing. However, since the basic configuration of the present embodiment is the same as that of the first embodiment, the same parts are assigned the same reference numerals and descriptions thereof will be omitted. As shown in FIG. 9, this embodiment is characterized in that a contact piece 42C and a projection 42D are provided instead of the contact piece 42A of the first embodiment. In addition, the coating for rust prevention is given to the surface of the instrument main body 6 of this embodiment. That is, the surface of the tool body 6 is covered with a coating of the paint 61A for rust prevention. Therefore, as shown in FIG. 12, the upper and lower surfaces of each holding piece 61 are also covered with the coating of the paint 61A.

As shown in FIG. 9, the contact pieces 42C are integrally formed on the left and right ends of the connection portion 42, respectively, and are long plate-like members along the front-rear direction. Each contact piece 42C is inclined downward from the rear to the front. Therefore, each contact piece 42C deforms to generate a downward elastic force when a force is applied upward. Further, a rectangular protrusion 42D that protrudes downward is cut and raised at the central portion of each contact piece 42C (see FIG. 11). That is, as shown in FIGS. 10 and 11, each contact piece 42C is closer to the opening end (one end where each holding piece 61 is inserted) of each first slit 32 than the portion contacting with each holding piece 61. And each protrusion 42D. Each protrusion 42D, like the contact piece 42C, generates a downward elastic force by deforming when a force is applied upward. When the conductive plate 4 is housed in the grounding socket 1, the contact pieces 42C and the projections 42D are located in the first slits 32 as shown in FIGS.

Hereinafter, a method of electrically connecting the conductive plate 4 to the instrument body 6 and grounding it will be described. First, as in the first embodiment, the holding pieces 61 of the holding portion 60 are aligned with the positions of the first slits 32 of the grounding socket 1. Then, the front ends of the holding pieces 61 are inserted into the first slits 32 from one end (opening end) of the first slits 32 in the longitudinal direction, and the grounding socket 1 is slid backward. Then, each holding piece 61 contacts each protrusion 42D, and presses each protrusion 42D upward. Thereafter, when the grounding socket 1 is further slid backward, the projections 42D come in pressure contact with the upper surface of each holding piece 61 (contact with elastic force). At this time, as shown in FIG. 12, the edge of each protrusion 42D slides (moves while sliding) on the upper surface of each holding piece 61, so that the paint 61A covering the upper surface of each holding piece 61 can be peeled off. That is, the edge of each protrusion 42 D serves as a blade for scraping the surface of each holding piece 61.

Thereafter, when the grounding socket 1 is further slid backward, the holding pieces 61 contact the contact pieces 42C and press the contact pieces 42C upward. As a result, each contact piece 42C deforms upward and generates a downward elastic force, so that each contact piece 42C is in pressure contact with the upper surface of each holding piece 61 (contacts with an elastic force). At this time, the coating of the paint 61A on the upper surface of each holding piece 61 has already been peeled off by the projections 42D. For this reason, each contact piece 42C is in pressure contact with the portion of the upper surface of each holding piece 61 from which the coating of the paint 61A is peeled (contacted with elastic force). Therefore, the conductive plate 4 can be electrically connected to the instrument body 6 via the contact pieces 42C and the holding pieces 61 to be grounded.

Here, in the first embodiment, in the case where the surface of the tool body 6 is coated, each contact piece 42A and each holding piece 61 are removed after the coating of the paint 61A on the surface of each holding piece 61 is peeled off. And electrically connected. On the other hand, in the present embodiment, when the contact pieces 42C and the holding pieces 61 are electrically connected and grounded, the coating of the paint 61A on the surface of the holding pieces 61 is formed by the protrusions 42D. It is possible to do the work of removing Therefore, in the present embodiment, the conductive plate 4 can be easily electrically connected to the instrument body 6 and grounded without the need to separately perform an operation of peeling off the coating of the paint 61A of each holding piece 61.

Note that as shown in FIG. 13, each contact piece 42 </ b> C may be provided with a plurality (two in the figure) of protrusions 42 D along the front-rear direction (longitudinal direction of the first slit 32). In this configuration, even if the projections 42D contacting the upper surface of each holding piece 61 can not completely remove the coating of the paint 61A, the other projections 42D contacting the upper surface of each holding piece 61 later cover the coating of the coating 61A. It can be peeled off. That is, in this configuration, the coating of the paint 61A on the surface of each holding piece 61 can be more reliably peeled off by the plurality of protrusions 42D.

Claims (3)

A grounding socket to which the lamp grounding cap is connected;
And an instrument body for holding the grounding socket.
The grounding socket has a conductive member housed therein and a slit provided in the outer wall thereof.
The conductive member is configured to be electrically connected to a ground terminal provided on the base for grounding,
The device body has a holding piece for holding the grounding socket by being inserted into the slit.
The holding piece has a zero potential,
The lighting apparatus, wherein the conductive member has a contact piece exposed to the outside through the slit and elastically contacting the holding piece inserted into the slit. The slit has an open end at one end in the longitudinal direction,
The holding piece is inserted into the slit through the open end,
The conductive member has a protrusion at a portion closer to the open end than a portion where the contact piece contacts the holding piece,
The lighting device according to claim 1, wherein the projection has a blade for scraping the surface of the holding piece. The luminaire according to claim 2, wherein a plurality of the protrusions are provided along a longitudinal direction of the slit.

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