JPH04525Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a light bulb having a base portion, and particularly to improvements in fixing and supporting the light bulb using adhesive.

(Prior Art) Conventionally, a light bulb having a base portion of this type, for example, a light bulb with a reflector, is generally constructed as follows. That is, for example, a rectangular mounting hole is bored in the bottom surface of the reflector, and one end of a base portion having a rectangular opening corresponding to this mounting hole is engaged with the mounting hole, so that the base portion is integrally formed with the reflector. .

To attach and assemble the light bulb to the base, for example, place the light bulb whose base is formed by crushing and sealing the lead wire connected to the terminal, and position the light bulb terminal side on the base. By suitably filling cement, which is an adhesive, from the bottom side of the reflector and fixing it, one end of the light bulb is fixedly supported within the base portion attached to the reflector.

(Problem that the invention aims to solve) However, when the light bulb is placed on the base, filled with adhesive from the bottom side of the reflector, and fixed and supported with adhesive, it is difficult to focus the adhesive, resulting in poor adhesion to the base. This often occurred, and the light bulb sometimes fell out of the base. Furthermore, insufficient filling of adhesive not only adversely affects the adhesive strength as described above, but also leaves a void inside the base, which prevents the heat generated by the bulb from being transferred and cools the bulb terminal side. There were times when it became difficult to go.

The present invention has been developed in view of the above circumstances, and provides a light bulb that improves the filling property of adhesive into the base part, securely supports the light bulb with sufficient strength, and provides good cooling on the light bulb terminal side. The purpose is to

[Structure of the idea]

(Means for solving the problem) In a light bulb in which the base part is filled with adhesive and the light bulb terminal side is fixed to the base part, a plurality of through holes are formed in the base part, and the through holes are filled with adhesive. To provide a light bulb characterized in that an adhesive is interposed between the light bulb and the light bulb.

[Example of idea]

An embodiment of the present invention will be described with reference to the drawings.

1 is a reflector, for example a metal concave reflector;
2 is a base part glued to the bottom part 1a of this reflector 1, and 3 is a part 3b attached to this base part 2 on the bulb terminal side.
This is a light bulb with a .

The reflector 1 is a rotating quadratic curved reflector with a flat bottom 1a, and a rectangular mounting hole 1b is formed in the bottom 1a.

The base part 2 is a cylindrical body with both ends open and having a cross section that can be easily inserted into the mounting hole 1b. Inner engaging pieces 4, 4 having engaging edges 4a that engage with each other are bored in the direction of the central axis of the light bulb, and further, both short edges of the opening 2a have lateral sides that press into contact with the short edges of the mounting hole 1b, respectively. Restriction pieces 6, 6 are provided protrudingly.

The above light bulb 3 is, for example, a halogen light bulb.
A is sealed to form a light bulb terminal side 3b. Further, a light emitting section 3c is provided within the bulb 3a. The bulb terminal side 3b is located within the base portion 2 having a through hole 8 formed in the side wall, and is fixed with cement 7, which is an adhesive. This adhesive 7 fills the through hole 8 of the base portion 2.

To assemble this light bulb with a reflector, place the light bulb terminal side 3b of the light bulb 3 inside the base part 2,
A thin tube such as an injection needle is inserted into the through hole 8 and the adhesive 7 is filled. Therefore, the adhesive 7 can be filled into the base portion 2 without any vacancies. Moreover, in the fixed state, the adhesive 7 fills the inside of the through hole 8 of the base portion 2, and maintains a state in which the adhesive 7 and the base portion 2 are fitted with each other through unevenness. Therefore, the light bulb 3 is firmly integrated with the base portion 2, and there is no chance of it falling off.

After the light bulb 3 is fixedly supported by the base portion 2 as described above, the base portion 2 is inserted into the mounting hole 1b of the bottom portion 1a of the reflector 1 while holding the light bulb 3.

Then, as the light bulb terminal side 3b advances, the side restraining piece 6 is pressed against the edge of the mounting hole 1b and shrinks.
The engagement edge 4a of the inner engagement piece 4 engages with the edge of the attachment hole 1b, and the movement is stopped. Then, the side restraining piece 6 is elastically pressed against the mounting hole 1b, and the base part 2 is pressed against the mounting hole 1b.
prevent sideways movement.

Therefore, the base portion 2 is accurately positioned with respect to the reflector 1, and the light emitting portion 3c of the light bulb 3 is
is accurately fixed in a predetermined position relative to the reflector 1.

In the above description, the reflector 1 and the base part 2 are made separately, and the case is explained in which they are combined so that the base part 2 is connected to the bottom part 1a of the reflector 1 as a whole. Even when the bulbs are integrally formed, the same effect can be obtained in terms of adhesive strength and adhesive filling properties between the base portion 2 and the light bulb 3 by forming a plurality of through holes in predetermined portions of the base portion 2 as appropriate. be.

[Effect of idea]

According to the invention of the present invention, a plurality of through holes are formed in the side wall of the base part, and adhesive is interposed in these through holes to fix the base part and the light bulb. Therefore, it is easy to fill with the adhesive, and a dense bond is formed. It can be filled with adhesive and exhibits strong adhesive properties. In addition, the filled adhesive fills the through hole made in the side wall of the base, and the adhesive and base become locked, causing excessive force to be applied around and in the direction of the central axis of the light bulb. It can withstand even if it gets wet. Moreover, the adhesive after filling is dried through the through-hole, which has the advantage of shortening the adhesive fixing time.

In addition, since the adhesive is evenly filled into the base and there are no voids, the heat generated by the bulb can be easily radiated to the outside through the adhesive from the bulb terminal side.

[Brief explanation of the drawing]

The drawings show an example of the configuration of a light bulb with a reflector, which is an embodiment of the present invention.
The figure is a front view. 1...Reflector, 2...Base part, 3...Light bulb, 3b...Light bulb terminal side, 7...Adhesive, 8...
Through hole.

Claims (1)

[Scope of utility model registration request] In a light bulb in which the base part is filled with adhesive and the bulb terminal side is fixed to the base part, a plurality of through holes are formed in the base part, and the adhesive is interposed in the through holes. Featured light bulb.