JPH0524442U - lighting equipment - Google Patents

Abstract

(57) [Summary] [Purpose] The globe can be attached and removed easily and securely with one touch to the case of the vehicle fluorescent lamp. [Structure] A body case 1 is provided with a globe mounting portion 5, an elastic locking metal fitting 2 is attached to the mounting portion 5, and a locking projection 4 of a globe 3 is locked to the locking metal fitting 2. The engaging portion 2a is provided, while the engaging projection 4 of the globe 3 is provided with an engaged portion 4a that is detachably engaged with the engaging portion 2a of the engaging metal fitting 2, and the engaging portion 2a and the engaging portion 2a are engaged with each other. The engaging portion 4a is formed so as to have a concave-convex relationship having a curved surface, and the radius of curvature of the curved portion on the convex side is set to be larger than that of the concave side. As a result, the glove 3 is pushed up from the bottom surface of the main body case 1, and the engaged portion 4 is engaged with the engaging portion 2 a of the locking fitting 2.
It is possible to easily engage a by engaging in a concave-convex relationship. In this state, since it is larger than the radius of curvature of the curved surface on the convex side,
Two-point contact with the curved surface on the concave side prevents rattling.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a lighting device for vehicles such as buses and trucks or for indoor use.

[0002]

[Prior Art]

 Conventionally, as a means for attaching the globe to the main body case of the lighting fixture, the globe has been attached with a screw or the like.

[0003]

[Problems to be solved by the device]

 However, when assembling the fluorescent lamp fixture with the above-mentioned attachment means, it is necessary to screw the globe with a plurality of screws, and since it is necessary to purposely close each screw individually, it takes time to attach it. Mass production was lacking and work efficiency was extremely poor. Also, when replacing an old fluorescent lamp, as when attaching the globe, multiple screws must be removed when removing the globe from the main body case of the fluorescent light fixture, so if removing it takes time. It was very troublesome to replace it with a new one after replacing it with a new one.

Therefore, in order to solve such a problem, a locking piece provided on the main body case is used for a locking portion provided on the glove like Japanese Utility Model Publication No. 57-17454 and Japanese Utility Model Publication No. 55-7290. An elastically locking structure has been proposed. However, the former has a structure in which the locking pieces are biased by sponges, so there is a problem in that the number of parts increases. Also, in the latter, the locking piece is made of an elastic material, but since the side portion on the opposite side where the locking piece is provided is made of a non-elastic piece, the locking piece made of an elastic member is further , It was necessary to adopt a locking structure. Therefore, there is a problem that the locking piece for locking the glove requires a plurality of types of parts and also requires a lock member, which increases the number of parts.

An object of the present invention is to provide a lighting device in which a globe can be easily and surely attached to and detached from a main body case of a fluorescent lamp device for a vehicle with one touch.

[0006]

[Means for Solving the Problems]

 The present invention provides a lighting fixture in which a locking protrusion provided on a globe is inserted and locked to a peripheral edge of a main body case for housing a lighting fixture, the main body case is provided with a globe mounting portion, and Elastic locking metal fittings are attached, and the engaging metal fittings are provided on the locking metal fittings, while the engaging projections of the globe are engaged with the engaging metal fittings of the locking metal fittings. The engaged parts that are detachably locked are provided, and both engaging parts and the engaged parts are formed so as to have an uneven relationship with a curved surface, and the radius of curvature of the curved part on the convex side is the concave side. The gist is to make it larger than the radius of curvature of.

[0007]

[Action]

 According to the present invention configured as described above, in order to attach the glove to the main body case, the globe is pushed up from the bottom surface of the main body case so that the engaged member engages with the engaging portion of the locking metal fitting in a concave-convex relationship. And make it easy. In this state, the radius of curvature is larger than that of the curved surface on the convex side, so two-point contact is made with the curved surface on the concave side, and rattling is prevented.

[0008]

【Example】

 (First Embodiment) A first embodiment in which the present invention is embodied in a vehicle fluorescent lamp will be described below with reference to FIGS. 1 to 5.

As shown in FIGS. 1 and 2, a storage chamber space is provided at the center of a box-shaped main body case 1, and a flange 1 a extending outward is provided at the lower peripheral edge of the side wall. Then, the main body case 1 is attached to the ceiling by inserting a mounting screw (not shown) into the mounting hole 1b provided in the flange 1a and screwing it into a ceiling surface (not shown). .. A pair of elastic locking metal fittings 2 are attached to both sides of the flange 1a on the long side thereof.

As shown in FIG. 5, an engaging portion 2a located at the upper end is formed in a semi-cylindrical shape on the locking fitting 2 via a diagonal piece 2b as a guide portion extending upward, and the radius of curvature thereof will be described later. It is formed to be smaller than the radius of curvature of the claw portion 4a of the locking projection 4 of the globe 3. A mounting piece 2c is formed at the base end of the locking metal fitting 2, and the mounting piece 2c extending in the horizontal direction is inserted into a mounting hole 5 as a mounting portion provided through the flange 1a and spot-welded to the lower surface of the flange 1a. The entire locking fitting 2 except the mounting piece 2c is maintained in a state of being inclined outward.

The glove 3 is formed in a dish shape and covers the lower surface of the main body case 1, and a pair of locking protrusions 4 are attached to both ends on the long side thereof. As shown in FIGS. 3 and 4, the locking projection 4 is formed in a substantially L-shaped cross section, and its substantially cylindrical claw portion 4a is directed inward. Then, the claw portion 4a as the locked member of the locking projection 4 can be engaged in the engaging portion 2a against the elastic force of the locking metal fitting 2. Further, the engaging portion 2a presses the claw portion 4a so as to make a two-point contact, thereby preventing rattling and preventing the globe 3 from falling onto the main body case 1.

Next, a method of mounting the globe 3 in the lighting apparatus of the first embodiment having the above-described structure will be described. As shown in FIG. 3, first, the claw portion 4a of the locking protrusion 4 located at the right end of the globe 3 is inserted into the mounting hole 5 of the flange 1a, and the slanting metal fitting 2 positioned at the right end of the main body case 1 is slanted. While sliding from the lower end to the upper end of the piece 2b, it engages with the engaging portion 2a against the elastic force acting in the locking direction of the locking metal fitting 2. Then, the claw portion 4a of the locking projection 4 located at the left end of the globe 3 is also engaged with the engaging portion 2a of the locking metal fitting 2 located on the left side of the main body case 1 in the same manner as described above. Then, the claw portion 4a makes two-point contact with the inner peripheral surface of the engaging portion 2a, so that the glove 3 is prevented from rattling. Further, when removing the globe 3, it may be carried out in the reverse order of the attaching.

As described above, in the lighting device according to the first embodiment, the locking projection 4 of the globe 3 can be easily locked to the locking metal fitting 2 by the elastic force acting in the locking direction of the locking metal fitting 2. The globe 3 can be easily attached / detached to / from the main body case 1 with one touch.

Further, since the radius of curvature of the engaging portion 2a of the locking fitting 2 is smaller than the radius of curvature of the claw portion 4a of the locking projection 4, the claw portion 4a is clamped by the engaging portion 2a. It can be locked securely. Further, since the claw portion 4a is in contact with the inner peripheral surface of the engaging portion 2a at two points, it is possible to suppress the rattling of the globe 3 with respect to the main body case 1.

Second Embodiment Next, a second embodiment will be described with reference to FIGS. 6 to 9. However, the same components as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 6, an elastic locking metal fitting 6 is provided on the side edge of the mounting hole 8 as a mounting portion of the flange 1 a of the metallic main body case 1 of the fluorescent lamp for a vehicle via a bracket 7. Have been installed.

As shown in FIGS. 7 and 8, the upper end of the locking fitting 6 is bent in an inverted L shape, and the hanging piece 6b extending downward from the mounting piece 6a is formed in a semi-cylindrical shape. It is integrally formed with the engaged portion 6c. Since the radius of curvature is smaller than the radius of curvature of the claw portion 4a of the locking projection 4, the claw portion 4a can be locked to the engaging portion 6c. A guide portion 6d is integrally formed on the lower end of the engaging portion 6c in the shape of a semi-circular cylinder that is opposite to the circular arc surface of the engaging portion 6c, and the claw portion 4a of the locking projection 4 is engaged. It has a shape that makes it easy to do.

As shown in FIG. 9, the lower end of the metal bracket 7 is bent into an L shape, and the mounting piece 7 a located at the lower end thereof is transparent to the flange 1 a extending in the short side direction of the body case 1. It is inserted into the formed mounting hole 8 and spot-welded to the lower surface of the flange 1a. Then, it is erected perpendicularly to the surface of the flange 1a. The mounting piece 6a of the locking metal fitting 6 is welded to the upper end of the bracket 7, and the elastic force of the locking metal fitting 6 acts in the locking direction so that the engaging portion 6c engages the claw portion 4a of the locking projection 4. It can be locked by being pinched so as to make point contact.

Next, a method of mounting the globe 3 in the lighting device of the second embodiment having the above-described structure will be described. As shown in FIG. 7, first, the claw portion 4a of the locking protrusion 4 located at the right end of the glove 3 is brought into contact with the lower end of the locking metal fitting 6 attached to the right end of the main body case 1, that is, the guide portion 6d. They are brought into contact with each other and engage with the engaging portion 6c against the elastic force acting in the locking direction of the locking fitting 6. Then, the claw portion 4a of the locking projection 4 located at the left end of the globe 3 is also engaged with the engaging portion 6c of the locking metal fitting 6 located at the left end of the main body case 1 in the same manner as described above. Then, the claw portions 4a contact two points on the inner peripheral surface of the engaging portion 6c, and the rattling of the globe 3 with respect to the main body case 1 is prevented. Further, when removing the globe 3, it may be carried out in the reverse order of the attaching.

As described above, in the lighting equipment according to the second embodiment, the locking projection 4 of the globe 3 can be easily locked to the locking metal 6 by the elastic force acting in the locking direction of the locking metal 6. The globe 3 can be easily attached / detached to / from the main body case 1 with one touch.

Further, since the radius of curvature of the engaging portion 6c of the locking fitting 6 is smaller than the radius of curvature of the claw portion 4a of the locking projection 4, the claw portion 4a is pinched by the engaging portion 6c. It can be locked securely. Further, since the claw portion 4a is in two-point contact with the inner peripheral surface of the engaging portion 6c, it is possible to suppress the rattling of the globe 3 with respect to the main body case 1.

The present invention is not limited to the above embodiment, and for example, in the first and second embodiments, a pair of locking metal fittings 2 and 6 are provided in the long side direction of the main body case 1. However, only one is provided in each of the long side direction or the short side direction, or the engaging portions 2a and 6c of the locking metal fittings 2 and 6 are formed on the convex portion, so that the claw of the locking protrusion 4 on the glove 3 side is formed. A concave portion may be formed instead of the portion 4a, and the radius of curvature on the convex portion side may be made larger than the radius of curvature on the concave portion side.

[0023]

[Effect of the device]

 As described above in detail, according to the lighting device of the present invention, it is possible to easily and securely attach and detach the globe to the main body case of the vehicular fluorescent lamp device with one touch, which is an excellent effect. ..

[Brief description of drawings]

FIG. 1 is a front view of a lighting fixture according to a first embodiment.

FIG. 2 is a side view of the same.

FIG. 3 is a partial cross-sectional view showing the attached state of the glove.

FIG. 4 is a cross-sectional view of relevant parts showing a state in which a locking protrusion is also engaged with the locking metal member.

FIG. 5 is a perspective view of an essential part showing a state in which a locking projection is also engaged with the locking fitting.

FIG. 6 is a side view of a lighting fixture according to a second embodiment.

FIG. 7 is a partial cross-sectional view showing the attached state of the glove.

FIG. 8 is a cross-sectional view of relevant parts showing a state in which a locking projection is also engaged with the locking fitting.

FIG. 9 is a perspective view of an essential part showing a state in which the locking projection is also engaged with the locking metal.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 main body case, 2, 6 locking metal fittings, diagonal pieces as 2b guide parts, 3 gloves, 4 locking projections, 2a, 6c locking metal fitting engaging parts, 4a engaged parts, claw parts, 5, 8 Mounting hole as mounting part

Claims (2)

[Scope of utility model registration request] 1. A lighting fixture in which a locking projection provided on a globe is inserted and locked to a peripheral edge of a main body case for housing a lighting fixture, wherein the main body case is provided with a globe mounting portion, and the mounting portion is provided with a globe mounting portion. In contrast, an elastic locking metal fitting is attached, and the locking metal fitting is provided with an engaging portion for locking the locking projection of the globe,
An engaging portion that is detachably engaged with the engaging portion of the engaging metal fitting is provided on the engaging protrusion of the glove so that both engaging portions and the engaged portion have an uneven relationship having a curved surface. A luminaire characterized in that the radius of curvature of the curved portion on the convex side is larger than that of the concave side while being formed. 2. The luminaire according to claim 1, wherein the locking fitting is provided with a slanted guide portion which guides when the locking projection of the globe is inserted.