JPH07249314A - Lamp supporting spring structure for luminaire - Google Patents

Abstract

PURPOSE:To prevent rust an opposite surfaces between fixing plate springs and easily fasten a screw to a luminaire main body by devising a shape of a bent portion of a plate spring. CONSTITUTION:A metallic plate spring 1 having the approximately constant width is bent in such a manner that the plate surface thereof faces to each other. The bent pieces serve as lamp supporting springs 2 provided with fixing plate spring portions 4a, 4b, support arms 12 and lamp supporters 7. The spring 1 is bent in a predetermined curvature along the width direction in such a state where a clearance 5 is formed between the fixing plate springs 4a, 4b facing in parallel along the bending portion 3. A cutout 6 is formed on the bent portion 3. The surface of the spring 2 is coated by spraying a coating material to the spring 2. The coating material intrudes between the springs 4a, 4b so as to securely coat the opposite surfaces 11, where rust can be effectively prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention elastically deforms each of two lamp supporting springs fixed in a cantilevered manner to the main body of the apparatus, and separates a ring shape for each lamp supporting portion formed on each of the lamp supporting springs. A lamp support spring structure of a lighting fixture in which a lamp is fitted and which supports these annular lamps in a predetermined posture by the elastic restoring force of the lamp support spring, more specifically, the leaf springs are bent in a state where the plate surfaces face each other, Each of the bent pieces is formed on a lamp support spring, and both fixing leaf spring portions facing each other along the bent portion of the leaf spring are fastened together with a screw to the main body of the fixture, so that each of the lamp support springs. Relates to a lamp support spring structure of a lighting fixture fixed to the main body of the fixture in a cantilevered posture.

[0002]

2. Description of the Related Art The lamp support spring structure for lighting equipment is
Since the leaf spring is bent and each of the bent pieces is formed on the lamp support spring, it is advantageous in manufacturing and mounting as compared with the case where two lamp support springs are separately manufactured and fixed to the main body of the fixture. However, the fixing leaf spring part along the bent part of the leaf spring is tightened to the instrument body side with a screw,
When fixing each of the lamp support springs to the fixture body in a cantilevered position, only the fixing leaf spring part of one of the lamp support springs is structurally bent so that the plate surfaces face each other. Since it is difficult to tighten on the instrument body side with the screw, both of the fixing leaf spring parts facing each other along the bent portion are tightened together on the instrument body side with the screw,
Each of the lamp supporting springs is fixed to the main body of the device in a cantilevered posture.

In such a lamp supporting spring structure for a lighting fixture, conventionally, as shown in FIG. 11, a leaf spring 01 is fixed between leaf spring portions 03, 04 for fixing along a bent portion 02. The lamps are bent in close contact with each other, and each of the bent pieces is formed on the lamp support spring 05, and thereafter, the surface thereof is coated from the viewpoint of appearance and rust prevention.

[0004]

However, according to the above-mentioned prior art, the leaf spring 01 is replaced with the fixing leaf spring portion 0.
Since 3,04 are bent so that they are in close contact with each other,
When coating the surface of the lamp support spring 05, it is difficult for the paint to enter between the fixing leaf spring portions 03, 04, so that the fixing leaf spring portions 03, 04
There is a drawback that rust is likely to occur on the facing surfaces 06 between them.

In order to solve this drawback, for example, a leaf spring is bent in a state in which a gap is formed between the fixing leaf spring portions, and the paint easily enters between these fixing leaf spring portions. However, in this case, the elastic deformation of the bent part is large when both the fixing leaf spring part and the instrument body side are fastened together with the screw, and the bent part is corresponding to the elastic deformation. Since the elastic resilience generated in the device also becomes large, there is a new drawback that it is difficult to tighten the screw on the fixture body side, and with the lamp support spring fixed to the fixture body side, the reaction force of the large elastic restoration force is always If you use a tapping screw or the like to easily tighten it on the device body side, the tightened screw will be pulled in the direction of withdrawal by the elastic restoring force of the bent part, and the device body side Easily become drawback to al shedding also occur new.

The present invention has been made in view of the above circumstances, and by devising the shape of the bent portion of the leaf spring, rust is unlikely to occur on the opposing surfaces of the fixing leaf spring portions, and moreover, the screw is used. The purpose of the present invention is to provide a lamp support spring structure for lighting fixtures that is easy to tighten to the fixture body side.Especially, when tightening the fixture body side using tapping screws, etc. The purpose is to make it hard to fall off.

Further, according to the present invention, in the lamp support spring structure of the lighting fixture, in which the rust is unlikely to occur on the surfaces of the fixing leaf springs facing each other and the screws are easily tightened to the body of the fixture, The purpose is to prevent plastic deformation in the plate width direction.

[0008]

In order to achieve the above object, a characteristic structure of the present invention is to bend a leaf spring so that the plate surfaces face each other, and each of the bent pieces is formed on a lamp support spring. Both of the fixing leaf spring portions facing each other along the bent portion of the leaf spring are fastened together with screws to the instrument body side, and each of the lamp support springs is fixed to the instrument body side in a cantilevered posture. In the lamp supporting spring structure of a lighting fixture, the leaf spring is bent in a state of forming a gap between the fixing leaf spring portions, and a notch is formed in the bent portion.

When the notch is formed by bending the leaf spring along a line segment that crosses the through hole formed in the leaf spring in the radial direction, the bent portion of the leaf spring is formed in the plate width direction. Hard to plastically deform.

[0010]

[Function] Since the leaf springs are bent along the bent portions in such a manner that a gap is formed between the fixing leaf spring portions facing each other, paint enters between the fixing leaf spring portions. In addition, since the notch is formed in the bent portion, the bending elastic modulus of the bent portion becomes small, and therefore, when both the fixing leaf spring portions are screwed together to the instrument body side, Even if the elastic deformation amount of the bent portion becomes large, the elastic restoring force generated in the bent portion can be reduced corresponding to the elastic deformation amount.

When the notch is formed by bending the leaf spring along a line segment that crosses the through hole formed in the leaf spring in the radial direction, one end side of the bent portion is cut off and the bending is performed. The rigidity of the bent portion against bending in the plate width direction can be increased as compared with the case where a notch is formed in the portion.

[0012]

According to the lamp supporting spring structure of the luminaire according to the first aspect of the present invention, rust is unlikely to occur on the surfaces of the fixing leaf springs facing each other, and moreover, the screw is easily tightened to the main body of the apparatus.

In particular, due to the elastic restoring force generated at the bent portion, the reaction force acting on the screw that clamps and fixes the lamp support spring to the fixture body side becomes small. Therefore, a tapping screw or the like is used for the fixture body. Even if it is simply tightened on the side, the tightened screw is unlikely to fall off from the instrument body side.

In the lamp support spring structure of the lighting fixture according to the second aspect, the bent portion of the leaf spring is unlikely to be unexpectedly plastically deformed in the plate width direction during handling before being fixed to the fixture body side.

[0015]

【Example】

[First Embodiment] FIGS. 1, 3 and 4 show a case where metal leaf springs 1 having a constant or substantially constant width are bent so that their plate surfaces face each other, and each of the bent pieces is a fixing leaf spring. Part 4
1 shows a lamp support spring structure of a lighting fixture formed on a lamp support spring 2 including a and 4b, a support arm 12 and a lamp support portion 7, in which a leaf spring 1 is parallel to each other along a bent portion 3 thereof. Opposing fixing leaf spring portions 4a, 4b
In a state where the gap 5 is formed between them, the gap 5 is bent with a predetermined curvature along the width direction, and the notch 6 is formed in the bent portion 3.

Each of the lamp supporting portions 7 is curved in an arc shape into which the ring-shaped fluorescent lamps A and B are fitted from the tube radial direction, and each of the lamp supporting portions 7 has a different wattage, that is, an outside. The bending angles formed by the fixing leaf spring portions 4a and 4b and the support arm 12 are different so that the fluorescent lamps A and B having different diameters can be supported concentrically.

Each of the fixing leaf spring portions 4a, 4b is formed with a screw insertion hole 9 for inserting a tapping screw 8 as an example of a screw for fixing to the instrument body C side.

The notch 6 is formed by forming a through-slot 10 elongated in the longitudinal direction of the leaf spring in the leaf spring 1 in advance and bending the through-slot 10 along a line segment transverse to the minor axis direction. The penetrating elongated hole 10 is formed so as to be continuous with the screw insertion hole 9 formed in the fixing leaf spring portion 4a which is fixed in a state of making surface contact with the instrument body C side.

Then, a paint is sprayed on the lamp supporting spring 2 formed by bending the leaf spring 1 as described above, and the surface thereof is painted.
Gap 5 and bent portion 3 formed between a and 4b
From the notch 6 formed in the above, it enters between the fixing leaf spring portions 4a and 4b, the facing surface 11 thereof is surely coated, and the generation of rust in this portion is effectively prevented.

FIG. 5 shows the painted lamp support spring 2 described above.
Is fixed to the device body C side in a cantilevered posture, and as shown in FIG. 2, while elastically deforming the bent portion 3,
Both the fixing leaf spring portions 4a and 4b are fastened together with a tapping screw 8 to a sheet metal reflecting plate D provided on the instrument body C side.

[Second Embodiment] FIG. 6 shows another embodiment of the present invention, in which fixing leaf spring portions 4 facing each other along the bent portion 3 are provided.
The leaf spring 1 is bent and a bent piece is formed on the lamp support spring 2 in a state in which a gap 5 is formed between a and 4b which becomes wider as it goes away from the bent portion 3. Other configurations are similar to those of the first embodiment.

[Third Embodiment] FIG. 7 shows another embodiment of the present invention, in which fixing leaf spring portions 4 facing each other along the bent portion 3 are provided.
The leaf spring 1 is bent in a state in which a gap 5 is formed between a and 4b which becomes narrower as it goes away from the bent portion 3, and each of the bent pieces is formed on the lamp support spring 2. Other configurations are similar to those of the first embodiment.

[Fourth Embodiment] FIG. 8 shows another embodiment in which the leaf spring 1 is bent in a C-shaped cross section to form a bent portion 3. Other configurations are similar to those of the first embodiment.

[Fifth Embodiment] FIGS. 9 and 10 show another embodiment of the notch 6 formed in the bent portion 3, in which the side portion of the leaf spring 1 is partially cut beforehand. A cutout 6 is formed by bending the cut portion in the plate width direction. Other configurations are similar to those of the first embodiment, but the second to fourth embodiments are the same.
Instead of the notch 6 shown in the embodiment, the notch 6 shown in this embodiment may be formed and implemented.

[Other Embodiments] 1. The leaf spring is not limited to a plate spring having a constant or substantially constant plate width, and may have a plate width changing along the longitudinal direction thereof. 2. A bolt used in combination with a nut may be used as the screw for fastening both of the fixing leaf springs to the instrument body side.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a front view of a lamp support spring.

FIG. 2 is an enlarged cross-sectional view of a main part showing a state in which a lamp support spring is fixed to a device body side.

FIG. 3 is a plan view of a lamp support spring.

FIG. 4 is a bottom view of the lamp support spring.

FIG. 5 is a cross-sectional view of essential parts showing a state in which the lamp support spring is fixed to the fixture body side.

FIG. 6 is an enlarged cross-sectional view of a main part showing a second embodiment.

FIG. 7 is an enlarged cross-sectional view of a main part showing a third embodiment.

FIG. 8 is an enlarged cross-sectional view of a main part showing a fourth embodiment.

FIG. 9 is a plan view showing a fifth embodiment.

FIG. 10 is an enlarged cross-sectional view of the main parts showing the fifth embodiment.

FIG. 11 is a front view showing a conventional example.

[Explanation of symbols]

 1 leaf spring 2 lamp support spring 3 bent portion 4a fixing leaf spring portion 4b fixing leaf spring portion 5 gap 6 notch 8 screw 10 through hole C instrument body

Claims (2)

[Claims] 1. A leaf spring (1) is bent so that its plate surfaces face each other, and each of the bent pieces is formed on a lamp support spring (2), and the bent portion (3) of the leaf spring (1) is formed. Fixing leaf spring parts (4
Illumination in which both a and 4b) are fastened together on the fixture body (C) side with screws (8), and each of the lamp support springs (2) is fixed to the fixture body (C) side in a cantilevered posture. A lamp support spring structure for a device, wherein the leaf spring (1) has a gap (5) between the fixing leaf spring portions (4a, 4b).
And the bent portion (3).
A lamp support spring structure for a lighting fixture in which a notch (6) is formed. 2. The notch (6) has the leaf spring (1).
The lamp support spring structure for a lighting fixture according to claim 1, wherein the lamp support spring structure is formed by bending a through hole (10) formed in the leaf spring (1) along a line segment that crosses in a radial direction.