JPH0411289Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a reflector for a lighting fixture that uses a straight tube fluorescent lamp as a light source.

BACKGROUND ART Conventionally, the reflector of a lighting fixture, which is so-called a reverse Fuji shape, consists of a gutter-shaped reflector with a generally V-shaped or U-shaped cross-section, and end plates fixed to both longitudinal ends of the reflector. These reflecting plates and end plates are generally formed separately by pressing steel plates and assembled later.

As a means of fixing the reflector and the end plate,
As described in Japanese Patent No. 49247, there is a method in which the edge of the end plate is bent inward and the bent portion is spot welded to the inner peripheral surface of the end plate of the reflector. Another fixing means, as described in Japanese Utility Model Application Publication No. 50-50591, is to fasten the socket, end plate, and reflector plate together using socket mounting screws. Also,
Other fixing means include fixing by caulking the reflecting plate or end plate, as described in Japanese Utility Model Publication No. 59-29290.

Problems to be Solved by the Invention First, when spot welding is used as described in Japanese Utility Model Publication No. 53-49247, there is a drawback that welding marks are formed on the outer surface of the reflector, which impairs its appearance.
In addition, spot welding at multiple locations increases the number of steps, and requires large-scale equipment such as an automatic spot welding machine.

When the socket, end plate, and reflector are fastened together using socket mounting screws as described in Japanese Utility Model Publication No. 50-50591, it is time-consuming to hold the three parts and align the mounting holes. It has the disadvantage that it takes a long time.

As stated in Utility Model Publication No. 59-29290,
When fixing by caulking, the disadvantage is that the caulking process is time-consuming and unsuitable for mass production.

This idea was developed in view of these points, and it is possible to easily and reliably assemble and secure the reflector and the end plate, and in particular, it is a reflector for lighting equipment that can be easily assembled automatically. The purpose is to obtain.

Measures to solve the problem: A bent insertion piece is formed at the longitudinal end of the gutter-shaped reflector plate, and the bent insertion piece is bent inwardly in a downwardly expanding state. Forms a locking tongue that expands. A bent insertion piece in which an end plate that covers the longitudinal end of the reflector has an inwardly bent bend that is inscribed in the inner peripheral surface of the reflector, and a bent insertion piece is inserted into the folded piece. A hole with approximately the same width is formed. The dimension from the inner circumferential surface of the reflection plate to the lower edge of the locking tongue is set to be approximately the same as the plate thickness of the bent piece.

Function: Insert the folded insertion piece into the hole of the folded piece. During insertion, the locking tongue deforms from the expanded state to the closed state and passes through the hole together with the bent insertion piece. The locking tongue that has passed through the hole expands elastically, and its lower edge abuts the upper surface of the bent piece, preventing the bent insertion piece from coming out of the hole, and preventing the locking tongue and the reflector from falling out. The bent piece is held between the inner circumferential surfaces of the bent piece.

Embodiment An embodiment of this invention will be described based on the drawings. First, a reflecting plate 1 having a substantially V-shaped cross section is formed. The reflector 1 is made of a colored steel plate that has been surface-treated in advance, and sockets for straight tube fluorescent lamps (not shown) are inserted into the reflector 1 at positions close to both ends in the longitudinal direction. An opening 2 is formed. A pair of bent insertion pieces 3 that are bent upward are formed at both longitudinal ends of the reflecting plate 1 . These bent insertion pieces 3 are formed into a substantially trapezoidal shape whose width gradually becomes narrower toward the top. Further, a locking tongue piece 4 is cut and raised in the bent insertion piece 3 and is elastically expanded in a downwardly expanding state toward the inside of the reflector plate 1.

Next, a pair of end plates 5 are provided that cover the longitudinal ends of the reflector 1, and like the reflector 1, these end plates 5 are made of color steel plates that have been surface-treated in advance. There is. Bent pieces 7 inscribed in the inner circumferential surface 6 of the reflective plate 1 and bent inward are formed on the lower edge of the end plate 5, and these bent pieces 7
A hole 8 having substantially the same width as the bent insertion piece 3 is formed at a position facing the bent insertion piece 3 . The dimension from the inner circumferential surface 6 of the reflecting plate 1 to the lower edge of the locking tongue piece 4 is set to be approximately the same as the thickness of the bent piece 7.

In such a configuration, when assembling and fixing the reflector 1 and the end plate 5, the end plate 5 is lowered from above with respect to the reflector 1, so that the reflector 1 is inserted into the hole 8 of the end plate 5. Insert the bent insertion piece 3. Since the bent insertion piece 3 has a substantially trapezoidal shape, it smoothly enters the hole 8 using the edge 9 of the bent insertion piece 3 as a guide.
Further, during this insertion, the locking tongue piece 4 enters the hole 8 while changing from the expanded state to the closed state, and after passing through the hole 8, the locking tongue piece 4 expands to the original state. When the locking tongue piece 4 that has passed through the hole 8 expands to its original state, the lower edge of the locking tongue piece 4 comes into contact with the upper surface side of the bent piece 7.
The bent piece 7 is held between the inner circumferential surface 6 of the reflecting plate 1 and the locking tongue piece 3. Therefore, the bent insertion piece 3
The reflecting plate 1 and the end plate 5 can be assembled and fixed by the simple operation of inserting them into the holes 8, and the locking tongue piece 4 prevents the bent insertion piece 3 from coming out of the hole 8. This makes it possible to obtain a secure fixed state.

Effects of the invention This invention forms a hole in the bent piece of the end plate into which the bent insertion piece formed on the reflector plate is inserted as described above, and closes when the bent insertion piece is inserted into the hole. By forming a locking tongue on the bent insertion piece that is inserted into the hole together with the bent insertion piece and expands after passing through the hole, the inner peripheral surface of this locking tongue and the reflection plate is The folded piece can be held between the
Therefore, the reflector and the end plate can be reliably assembled and fixed with a simple structure and simple work, and the reflector and the end plate can be moved relative to each other in the vertical direction. This allows the bent insertion piece to be inserted into the hole, making it easy to automate assembly work without deforming the reflector or end plate. Since no large external force is applied to the reflective plate, the reflective plate etc. will not be damaged, the appearance of the reflective plate etc. will not be damaged, and the quality of the reflective plate etc. can be improved.

[Brief explanation of drawings]

The drawing shows one embodiment of this invention.
The figure is an exploded perspective view of the reflector and end plate, Figure 2 is a vertical side view thereof, Figure 3 is a vertical front view showing an enlarged part of the end plate, and Figure 4 is a part of the reflector. FIG. 5 is an enlarged longitudinal sectional front view, FIG. 5 is a perspective view showing the assembled state of the reflector and end plate, FIG.
The figure is a longitudinal sectional front view showing an enlarged part of the figure. DESCRIPTION OF SYMBOLS 1... Reflection plate, 3... Bending insertion piece, 4... Locking tongue piece, 5... End plate, 6... Inner peripheral surface, 7... Bending piece, 8... Hole.

Claims (1)

[Scope of utility model registration request] A gutter-shaped reflector and an end plate covering the longitudinal end of the reflector are provided, a bent insertion piece bent upward is formed at the longitudinal end of the reflector, and the end plate is provided with a bent insertion piece bent upward. A bent piece bent inward is formed on the inner circumferential surface of the reflecting plate, and the bent insertion piece is inserted by the relative vertical movement of the reflecting plate and the end plate. A hole having substantially the same width as the bent insertion piece is formed in the bent piece, and a locking tongue piece that elastically expands inwardly in a downwardly expanding state is formed in the bent piece, and A reflector for a lighting device, characterized in that a dimension from the inner circumferential surface of the reflector plate to the lower end edge of the locking tongue piece is set to be approximately the same as the thickness of the bent piece.