JPH0346922B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to an improvement in a support structure for a bowl-shaped reflector of a lighting device.

(Prior Art) Conventionally, in a lighting device such as a flashlight, a lamp is disposed in a main body having a light projection window, and a reflector enclosing the lamp is formed into a bowl shape with a metal plate, and a lamp is attached to the bottom of the reflector. A mounting hole through which the lamp passes is provided, a threaded tube is formed around the hole, and the threaded tube is screwed into a support member for support.

When such a conventional reflector is formed by molding glass or the like and used in a spot light, etc., the light gathering ability and reflectance of the reflector are improved, but on the other hand,
Since the threaded portion is also molded, the mold requires extremely high precision, which is not only troublesome but also has the disadvantage of poor moldability.

(Problem to be Solved by the Invention) In contrast, as seen in, for example, Japanese Utility Model Application Publication No. 58-31611, the head of the reflector has a neck, a locking recess protruding from the neck, and an arm storage recess. A lighting device is known in which a reflecting mirror is supported by inserting a locking step portion of a mounting spring provided in the device body and an arm piece into the locking recess and the arm piece storage recess and elastically locking the lamp. ing.

However, this type has disadvantages such as a complicated structure and troublesome manufacturing because the head of the reflector has a bulging neck with a locking recess, etc. Furthermore, this type is supported only by the inner surface of the reflector. Therefore, when molding a thick material such as glass, the positional relationship between the lamp and the reflector may vary due to variations in molding, which is disadvantageous.

In addition, as seen in Japanese Utility Model Publication No. 11272/1972, a groove was formed on the upper side of the reflector, and a protrusion of an elastic piece provided on the cylindrical part was fitted into this groove to hold the reflector. Lighting equipment is known.

This also has poor light distribution if the dimensions of the reflector described above are large, and the structure of the mounting part is complicated and manufacturing is troublesome. I can't stand it.

Further, Japanese Utility Model Publication No. 51-16618 describes a lighting fixture in which a reflector is provided with a tapered locking metal fitting, and the reflector is attached to the fixture body by rotating the reflector. However, this method also has the same disadvantages as the above-mentioned conventional examples, and since the locking metal fittings are separately provided on the reflector, the structure is complicated, the number of parts is large, and manufacturing is troublesome.

Furthermore, it is also possible to combine the three conventional examples mentioned above.
Since the technical ideas of these conventional examples are fundamentally different, combining them does not provide an advantageous solution.

Therefore, the problem of the present invention is to have a simple configuration that allows the use of reflectors with large variations in wall thickness, such as those made by molding, and to ensure that the reflector is supported reliably to avoid falling off, variations in the mounting position, or undesirable changes in the mounting position. It is an object of the present invention to provide a lighting fixture having a reflector mounting mechanism without a reflector mounting mechanism.

[Structure of the Invention] (Means for Solving the Problems) The present invention is a lighting device that achieves the above-mentioned problems, and includes: (1) a locking pawl and a retainer located on the side of the locking pawl and formed with a step; (2) An opening is provided at the bottom of the reflective surface portion formed in a bowl shape, and a support is provided along the axial direction at the edge of this opening. A plurality of insertion grooves through which the pawls are inserted are provided, and an engaging step portion in which the locking pawl engages with the inner surface between the insertion grooves by relative rotation with the support body, and an outer surface side between the above-mentioned insertion grooves. (3) a retaining claw of the support body is inserted through an insertion groove of the reflector;
Then, by rotating the reflector, the locking pawl engages with the engaging stepped portion, the holding portion engages with the supported portion, and the reflector is supported by the engaging portion. There is.

(Function) It can be mounted by simply inserting the locking claw of the support into the insertion groove of the reflector and rotating the reflector, and when mounted, the locking claw and the holding portion cover both the inside and outside of the opening of the reflector. Since the reflector is held between the reflectors, it can be supported reliably and accurately even if the thickness of the reflector varies somewhat, and the supporting position and direction will not vary due to vibrations or the like.

(Example) The details of the present invention will be explained by referring to the illustrated example. The figure shows an example of a spot light to which the present invention is applied, and in the figure, 1 is a suspension body hanging from a mounting surface (not shown), 2 is a main body of the instrument suspended from this suspension body 1, and 3 is this A light projection window provided on the front side of the main body 2; 4 a lamp, such as a halogen light bulb, mounted opposite to the light projection window; 5 a socket for supporting the lamp 4; 6 enclosing the lamp 4 and facing the light projection window 3; The bowl-shaped reflectors 7, 7 are supports that are attached to the main body 2 and support the reflector 6.

The reflector 6 is formed by molding glass, synthetic resin, etc., and its inner surface forms a paraboloid of revolution reflective surface portion 61. An opening 62 through which the lamp 4 passes is provided at the center of the bottom surface, and the inner surface around this opening 62 is stepped. A plurality of, for example, two, insertion grooves 64 are formed on the inner circumferential surface of the opening 62 and communicate with the outer surface of the opening 62. An annular supported portion 6 consisting of a stepped portion at the bottom of the outer surface 65
6 is molded. Then, the lamp 4 is connected to the opening 6
The light center of the lamp 4 is located at the focal point of the reflector 6.

The support body 7 is formed by press-molding a metal plate,
As shown in FIGS. 5 to 7, it has a substantially φ-shape, and the central pillars 71 are located on both sides of the bottom of the reflector 6 and are provided parallel to the axis of the reflector 6, and the central elastic latching The leg 72 is bent once in the direction of the opening 62, then bent again and advanced into the opening 62, and the tip is bent three times to form a locking pawl 73 and is locked to the engagement stepped portion 63. There is. In addition, elastic locking legs 74, 7 on both sides
Numeral 4 is a claw-shaped claw that is arranged along the arc of the supported part 66 and extends parallel to the axis of the reflector 6, and whose tip is bent to press the supported part 66 in the direction of the light projection window 3. A retained portion 75 is formed. The height difference between the locking pawl 73 and the holding portion 75 is configured in consideration of the taper of the engagement step portion 63. In this way, the lower edge of the support column 71 is bent to form a fixing portion 76 that is fixed to the main body 2.

Next, a method for assembling this lighting fixture will be explained. A socket 5 and a support 7 are fixed in the main body 1 as shown. Then, remove the reflector 6 and open the aperture 6.
2 into the main body 1 first, and tighten both locking claws 73, 7.
Push the reflector 6 until it passes through the insertion grooves 64, 64, press the holding part 75 against the supported part 66, and then rotate the reflector 6 by about 90 degrees. Then, the elastic locking leg 72 is elastically deformed by the taper of the engagement step 63 to allow the reflector 6 to rotate, and when the rotation is completed, the engagement step 73 and the holding portion 75 hold the reflector 5. Elastic locking. Then, the lamp 4 is inserted into the socket 5 through the opening 62. When disassembling, just do the opposite.

As described above, in the device of the present invention, since the reflector 6 is manufactured by molding, even if there is some variation in the wall thickness, the engaging step portion 63 and the insertion groove 64 are simply formed around the opening 62. And the supported part 6 is on the outer surface 65.
The reflector 6 can be attached to the support 7 by utilizing the elasticity of the support 7 by simply forming the engagement step 6.
Even if there is some error in the height difference between the support part 3 and the supported part 66, the engagement step part 63 is tightened using the elasticity of the locking claw 73, so the support is reliable and there is almost no deviation in the support position. . As described above, the structure of the support body 6 is simple and the dimensional tolerance is large, so the structure of the mold is simple, the dimensional tolerance is large, moldability is good, and it is suitable for mass production. Further, since the support body 7 can be integrally molded with the locking pawl 73 and the holding portion 75 by press molding, it is easy to manufacture and can be molded with high precision. Moreover, since the support body 7 is elastically locked, there is an advantage that even if there is a dimensional error in either of the two 6, 7, there is no problem in mounting and fastening.

In addition, it is sufficient that the engaging step portion can simply engage the locking pawl and act in the direction of pulling the reflector back from the light projection window.
Further, the supported portion 66 may be placed in any position as long as the holding portion 75 is in pressure contact with the reflector in the direction of the light projection window.

Further, the reflector only needs to be bowl-shaped, and its optical properties are not critical.

[Effects of the Invention] As described above, the lighting device of the present invention has a plurality of insertion grooves along the axial direction, through which the locking claws are inserted, at the edge of the opening formed at the bottom of the bowl-shaped reflector. An engaging stepped portion is provided on the inner surface between the insertion grooves, with which the locking pawl of the support is engaged by rotation relative to the support, and is supported along the same direction on the outer surface between the insertion grooves. A reflector including a supported part that comes into contact with the holding part of the body is provided, and by rotating the reflector after inserting the locking claw of the support into the insertion groove of the reflector, the locking claw moves into the engagement stage. In the department,
Since the holding parts engage with the supported parts and the reflector is supported by the support body, the reflector can be manufactured by molding, has a simple structure, has a large tolerance, and is easy to install. It is easy to use, the positional relationship between the lamp and the reflector does not change, and variations in light distribution can be prevented.

[Brief explanation of drawings]

FIG. 1 is a side view of one embodiment of the lighting fixture of the present invention, FIG. 2 is a sectional view, FIG. 3 is an enlarged sectional view of the main part, FIG. 4 is an enlarged rear view of the main part, and FIG. 6 is an enlarged front view of the support member, FIG. 6 is a side view, and FIG. 7 is a plan view. 2...Main body, 3...Lighting window, 4...Lamp, 6
... Reflector, 61 ... Reflective surface section, 62 ... Opening,
63... Engagement step portion, 64... Passing groove, 65... Outer surface, 66... Supported part, 7... Support body, 71... Support column, 72... Elastic locking leg, 73... Locking nails, 74
...Elastic locking leg, 75...Holding section.

Claims (1)

[Scope of Claims] 1. A support body having a plurality of elastic locking legs integrally provided with a locking pawl and a holding portion located on the side of the locking pawl and formed with a step; A reflective surface portion formed in a bowl shape, an opening formed at the bottom of the reflective surface portion, a plurality of insertion grooves formed along the axial direction at the edge of the opening and into which the locking claws are inserted, and a space between the insertion grooves. an engaging step portion formed on the inner surface side of the member and engaged by the locking pawl when rotated relative to the support body; and the holding portion formed along the same direction on the outer surface side between the insertion grooves. When the locking pawl of the support inserts and rotates through the insertion groove including the supported portion that abuts, the locking pawl is attached to the engagement stepped portion.
A reflector that is supported by the support body while the holding portion engages with the special target portion, respectively; and a lamp that is inserted into an opening of the reflector and is enclosed in the reflective surface portion. lighting equipment. 2. The lighting fixture according to claim 1, wherein the locking claw is provided at the tip of the elastic locking leg that is inserted into the opening. 3. The lighting device according to claim 1, wherein the engagement step portion is tapered to press the locking pawl in the light projection direction as the reflector rotates relative to the support.