JP2007280820A - Luminaire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminaire of which electrical conduction between a luminaire body and a reflecting plate is assured. <P>SOLUTION: A reflecting body 3 consisting of a conductive member whose surface is coated with an insulating film is supported, using a fixing screw 4, on a luminaire body 1 consisting of a conductive member whose surface is coated with an insulating film. An annular conductive member 5 consisting of conductive material is provided between the lower surface of a screw head and the reflecting body. A plurality of elastic screw engagement protruding pieces 6 are integrally constituted on the inner peripheral edge of the annular conductive member. A plurality of elastic claw-like film peeling pieces 8 are integrally constituted on the outer peripheral edge of the annular conductive member. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a conduction structure of a lighting fixture.

  Conventionally, for example, in a fluorescent lamp luminaire in which a straight tube fluorescent lamp is mounted, a reflector plate having an insulating protective film on the surface is attached to a luminaire body made of a conductive material with screws. A supporting configuration is implemented. As a protective coating for the reflector, coating is generally applied. Furthermore, in order to improve electrical safety, electrical connection between the luminaire body and the reflector is necessary.

  When making electrical connection between the luminaire main body and the reflector, a protrusion is provided on the lower surface of the screw head, and the coating film on the reflector is peeled off by rotation during screwing, so that the luminaire main body and reflector are electrically connected. (See, for example, Patent Document 1). FIG. 12 illustrates the structure and is a cross-sectional view showing the configuration of a metal fixing screw having a coating film peeling function, a reflector plate screw through hole, and a main body metal fitting.

  Further, a claw piece that elastically engages a screw hole edge portion where a thumbscrew for attaching the reflection plate and the thumb screw are screwed together is provided, and a conductive member that bites the claw piece is provided at the screw hole edge portion. Have been disclosed (for example, see Patent Document 2). FIG. 13 illustrates the structure, and is a cross-sectional view showing the configuration of the conductive member, the reflector screw through hole, and the main body bracket.

JP-A-8-334114 JP 2002-184232 A

  However, in the case of the structure in which the protrusion is provided on the lower surface of the screw head as described above, the coating film on the reflecting plate is peeled off by the rotation at the time of screwing. Since other than the contact surface necessary for conduction is also peeled off, there is a concern about the occurrence of rust. Further, it is necessary to ensure conduction including the protrusion and the fixing screw head, and if the whole is made of metal, there are problems of high cost and design.

On the other hand, when a claw piece that elastically engages the screw hole edge portion where the fixing screw and the fixing screw are screwed together is provided, the claw piece bites into the screw hole edge portion. The effect of suppressing the occurrence of rust can be expected without peeling off the coating film on the reflector due to the rotation at the time of screwing.
However, since the elastic claw piece of the conductive member bites into the edge of the screw hole, the screw through hole provided in the reflection plate needs a through hole that is about the size of the conductive member. There is a need to make it larger.

In addition, a fixing screw head (resin knob) used for a general lighting fixture is often molded with a white resin in accordance with the white coating of the reflector. For example, in the M4 screw, the screw head (metal part) has a diameter of about 8 mm, and the fixed screw head is formed by inserting at the time of head resin molding, and the size of the screw head (metal part). There are many resin knobs with a diameter of about 15 mm.

Further, the screw through hole of the reflecting plate is processed with a diameter of about 6 mm to 7 mm with respect to the M4 screw. Here, if the screw through hole is larger than the screw head (metal part), there is a concern that the reflection plate may fall from the fixing screw when the conductive member is deformed and the resin part is damaged at the same time.
Moreover, if the whole including the head of the decorative screw is made of metal, the above-mentioned concerns are solved, but there are problems of high cost and design, which is not appropriate.

  This invention is made | formed in view of the situation mentioned above, and aims at electrical conduction with a lighting fixture main body and a reflecting plate.

In order to achieve the above object, the present invention provides a reflector comprising a conductive member and an insulating coating deposited on the surface of a lighting fixture body comprising a conductive member coated with an insulating coating on the surface. In lighting fixtures supported by screws,
An annular conductive member made of a conductive material is provided between the lower surface of the screw head and the reflector, and a plurality of elastic screw engaging protruding pieces are integrated on the inner peripheral edge of the annular conductive member. In addition, a plurality of claw-like film peeling pieces having elasticity are integrally formed on the outer peripheral edge of the annular conductive member.

Further, according to the present invention, in the above invention, the screw engaging protruding piece is formed in a shape inclined in the screwing direction of the screw, and the distance between the tip of the screw engaging protruding piece and the screw is in the tightening stage of the screw. It is characterized in that it is configured in an engaged state that does not rotate in conjunction with it.

Further, the present invention is characterized in that, in the above-mentioned invention, the tip of the claw-like film peeling piece of the annular support is configured to peel off the film of the reflector when the screw is completely tightened.

Further, according to the present invention, in the above invention, the nail-like film peeling piece of the annular support has a dogleg-shaped bent portion in the vicinity of the tip, and is higher in the reflector direction than the annular surface of the conductive member. It is characterized by having.

According to the present invention, a plurality of elastic screw engaging protrusions are integrally formed on the inner peripheral edge of the annular support, and a plurality of claw-like film peeling pieces having elasticity are further provided on the outer peripheral edge of the annular support. With the integrated configuration, electrical conduction between the luminaire main body and the reflecting plate can be reliably ensured by pressing the screw.
In addition, the conductive member has a plurality of nail-shaped coating film peeling pieces formed in a U-shape provided on the outer peripheral edge when fixing the reflecting plate, and the tip of the member is screwed only when the screw tightening operation is almost completed. A structure in which the coating film of the reflector is peeled off by pressing, and the peeled area is extremely small, so that the generation of rust can be prevented.
It is also an effective means in terms of cost and design issues.

  The best mode for carrying out the present invention will be described with reference to FIGS.

Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 and FIG. 2 are an external perspective view of a fluorescent lamp lighting apparatus according to an embodiment of the present invention and an exploded perspective view in which a reflector is removed from the main body. The reflecting plate 3 is screwed to the reflecting plate receiving metal fitting 2 by a fixing screw 4 to which a conductive member 5 is attached, and is fixed to the instrument body 1.
FIG. 3 is an external perspective view of the conductive member used by being attached to the fixing screw of the present invention, and shows the configuration of each part. The conductive member is made of stainless steel, for example.

  The conductive member used by being attached to a fixing screw used for attaching the reflector of the lighting fixture to the fixture body is a plurality of screw engagements having elasticity supported by the fixing screw at the inner peripheral edge of the annular conductive member. The projecting piece 6 is provided facing inward, and a plurality of nail-like coating film peeling pieces 8 having elasticity are formed on the outer periphery. Can be ensured.

4 is a top view and a side view of the conductive member 5 of FIG. 3, and FIG. 5 is a cross-sectional view. FIG. 6 is a schematic side view of the conductive member showing the use state of FIG.
The conductive member has a plurality of support pieces that are elastically engaged with a fixing screw at the center, and the support pieces are inclined in the screw insertion direction, and the inner diameter of the tip of the screw engagement protruding piece 6 is fixed screw. 4 is smaller than the outer diameter of the screw thread 4 and larger than the outer diameter of the thread groove, does not interlock with the tightening rotation of the screw, and does not come off the screw. For example, in the M4 screw, since the thread diameter is 4 mm and the thread valley diameter is 3.4 mm, the inner diameter of the tip end of the screw engagement protruding piece 6 is about 3.5 mm.

When the tightening is almost completed, the nail-like coating film peeling piece 8 is pressed against the reflecting plate 3, and the screw engaging protruding piece 6 that is inclined by the further pressing rises, and the tip 7 of the screw engaging protruding piece is threaded. Engage with. At this time, the conductive member 5 rotates in conjunction with the tightening of the screw. Until then, the pressing of the screw to the reflecting plate does not act, and thus the coating of the reflecting plate does not peel off.
In addition, the nail-like coating film peeling part 9 is shaped like a dogleg so as to maintain the contact angle with the reflecting plate 3 at an angle close to 90 degrees (for example, 60 degrees) in order to ensure the peeling of the reflecting plate 3. It shape | molds and has height (for example, 0.5 mm) in a reflector direction with respect to the annular surface of an electrically-conductive member. The outer diameter of the nail-like coating film peeling piece 8 is smaller than the head (resin knob part) of the fixing screw 4, for example, about 11 mm, and the peeling portions of the conductive member 5 and the reflector 3 are separated from the fixing screw 4. It doesn't look out, it doesn't spoil the beauty.

Next, the procedure for attaching the reflector and the conduction state will be described.
FIG. 7 is a side view showing the configuration of the conductive member, the reflector, and the main body bracket of the present invention.
FIG. 8 is a cross-sectional view showing the configuration of the conductive member, reflector screw through hole, and main body bracket of the present invention.
9, 10, and 11 are enlarged cross-sectional views showing the conductive state of the conductive member.
First, as shown in FIG. 3, the conductive member 5 is attached to the fixing screw 4 that fixes the reflector 3 to the luminaire main body 1.
Next, the reflection plate 3 is fastened with the fixing screws 4 to the reflection plate receiving metal fittings 2 at two places of the instrument body 1. At this time, as shown in FIG. 9, the conductive member 5 is not interlocked with the rotation at the screw tightening stage. In this state, the conduction between the screw 4 </ b> A of the fixing screw 4, the reflector plate fitting 2, and the lighting fixture body 1 is ensured.

  Next, when the tightening is almost completed, the nail-like coating film peeling piece 8 having a height in the reflector direction with respect to the annular surface of the conductive member comes into contact with the reflector 3 and is further changed as shown in FIG. With this pressing, the screw engaging protruding piece 6 of the conductive member 5 is stretched. As the screw engaging protruding piece 6 rises, the tip 7 of the screw engaging protruding piece bites into the screw 4A and the conductive member 5 starts to rotate in conjunction with it. In this state, conduction between the screw 4A of the fixing screw 4 and the conductive member 5 is ensured.

  Next, when the conductive member 5 starts to rotate in conjunction with each other, when the screw tightening operation is almost completed, the nail-like coating film peeling portion 9 that has been in contact with the reflector 3 is further pressed as shown in FIG. The coating film 3A (for example, 20 to 30 μm) on the surface of the reflecting plate 3 is peeled off, and the conduction between the reflecting plate 3 and the conductive member 5 is ensured. Therefore, the conduction between the lighting fixture body 1 and the reflecting plate 3 is ensured.

Thus, according to this Embodiment, the conduction | electrical_connection between a reflecting plate and the receiving metal fitting provided in the lighting fixture main body can be ensured reliably by the press of a screw | thread. Further, no peeling occurs except for the portion in contact with the nail-like coating film peeling portion 9, and the generation of rust can be prevented.

1 is an external perspective view of a fluorescent lamp lighting apparatus according to an embodiment of the present invention. The exploded perspective view of FIG. The external appearance perspective view of the electrically-conductive member used attaching to the fixing screw of this invention. The top view and side view of FIG. FIG. 4 is a side sectional view of FIG. 3. The schematic side view of the electrically-conductive member which shows the use condition of FIG. The side view which showed the structure of the electrically-conductive member of this invention, a reflecting plate, and a main body bracket. Sectional drawing of FIG. Enlarged cross-sectional view explaining the conductive state at the screw tightening stage Enlarged cross-sectional view explaining the conductive state before screw tightening is completed Enlarged cross-sectional view explaining the conductive state when screw tightening is complete Sectional drawing which showed the structure of the metal fixing screw with a conventional coating-film peeling function, a reflecting plate screw through-hole, and a main body bracket. Sectional drawing which showed the structure of the conventional electrically-conductive member, a reflecting plate screw through-hole, and a main body bracket.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lighting fixture body 2 Reflecting plate metal fitting 3 Reflecting plate 3A Coating film 4 Fixing screw 4A Screw inserted in fixing screw 4B Screw head inserted in fixing screw 4C Resin head of fixing screw 5 Conductive member 6 Screw Engagement protrusion piece 7 Tip of screw engagement protrusion piece 8 Nail-like coating film peeling piece 9 Nail-like coating film peeling part 10 Reflector screw through hole 11A Metal fixing screw 11B Metal fixing screw head coating peeling part 11C Metal fixing screw head 12A Screw inserted into fixing screw 12B Screw head inserted into fixing screw 12C Resin head of fixing screw 13 Conductive member 14 Reflector screw through hole

Claims (4)

In a luminaire that has an insulating coating on the surface and is composed of a conductive member, in a luminaire that supports a reflector that is composed of a conductive member and an insulating coating on the surface, with screws,
An annular support made of a conductive member is provided between the lower surface of the screw head and the reflector, and a plurality of elastic screw engaging protruding pieces are integrally formed on the inner periphery of the annular support. And a plurality of claw-like film peeling pieces having elasticity on the outer peripheral edge of the annular support.
The screw engaging protruding piece is configured to have a shape inclined in the screwing direction of the screw, and the distance between the tip of the screw engaging protruding piece and the screw does not rotate in conjunction with the tightening stage of the screw. The lighting fixture according to claim 1, wherein the lighting fixture is configured in a state.
3. The lighting apparatus according to claim 1, wherein the tip of the nail-like film peeling piece of the annular support is configured to peel the film of the reflector when the screw is completely tightened.
The nail-like film peeling piece of the annular support has a dogleg-shaped bent portion in the vicinity of the tip, and is configured to have a height in the reflector direction with respect to the annular surface of the conductive member. The lighting fixture of Claim 1 thru | or 3.

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