JPH06181340A - Light emitting diode lamp - Google Patents

Abstract

PURPOSE:To restrain a light emitting unit from rotating and being pulled out upwards from a base by a method wherein pawls provided to the upper side face of the base are engaged with recesses provided to the light emitting unit, and the light emitting unit is mounted on the base making its upper end engaged with the upper open end of the base. CONSTITUTION:Pawls 21 engaged with recesses 22 provided to the lower side 6a of a light emitting unit 1 are provided to a base 2 at positions correspondent to the corresponding recesses 22. The opening of the recess 22 is formed into nearly the same shape with the pawl 21, and a step 23 is provided inside the recess 22. The pawl 21 is put into the recess 22 as bent and engaged with it making both their sides engaged with both the side faces of the recess 22, and furthermore the inner side of the pawl 21 is engaged with the step 23 provided inside the recess 22. By this setup, the light emitting unit 1 is restrained from being turned and being pulled out upwards from the base 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light bulb-type light emitting diode lamp used as an indicator lamp.

[0002]

2. Description of the Related Art Conventionally, a light-emitting diode lamp of a light bulb base type has a large amount of external force such as a rotational force applied to the light-emitting diode lamp when it is attached to or detached from a receiver. And the mouthpiece are attached by using an adhesive or the like. FIG. 5 is a sectional view showing the structure of a conventional light emitting diode lamp. In the figure, the light emitting unit 1 is an LED chip 3
After being mounted on a lead frame and wired with a gold wire 5, a reflecting cylinder 6 is integrally molded with a thermoplastic resin, and a seal for protecting the LED chip 3 and the gold wire 5 is formed in an upper opening of the reflecting cylinder 6. It is configured by filling the stopper 7. In this light emitting unit 1, a thermosetting resin is applied as an adhesive to the lower portion 6a, and the abutting portion 6b of the reflection tube 6 is attached to the opening end of the upper surface of the base 2 and mounted for several hours. By doing so, the adhesive is cured and the light emitting unit 1 and the base 2 are
Are combined.

Further, a light emitting diode lamp in which a light emitting unit and a base are connected by a concave and convex fitting is disclosed in Japanese Patent Publication No. 63-29.
No. 433 publication. 6 and 7 are an external perspective view of a light emitting diode lamp showing the conventional example and an exploded perspective view of FIG. In the figure, the light emitting unit 10 integrally molded with the translucent resin 11 is the translucent resin.
Protrusions 11a and 11a are formed at the base end of the protrusion 11, and the substantially cylindrical spacer 12 has vertical grooves 13a, 13a and
Forming 13b. These vertical grooves 13a, 13a are spacers so that the projections 11a, 11a of the light emitting unit 10 can be fitted in a concave-convex shape.
It is formed in the opposing region with the center of 12 in between. Also,
On the outside of the peripheral wall 13, projecting portions 13c, 13c, which are partially suspended from the other portions, are formed at the opposing portions, and three grooves 15, 15, and 19 are provided at the top opening end of the mouthpiece 14. It is formed vertically. These grooves 15 and 15 are the protrusions 13c of the spacer 12.
, 13c are formed at the opposing portions so as to fit into the concave and convex portions.

With such a construction, in the assembly of the light emitting diode lamp, the light emitting unit 10 is held in the upper opening of the spacer 12, and the projections 11a, 11a are combined so as to correspond to the vertical grooves 13a, 13a. The light emitting unit 10 and the spacer 12 are fitted at the same time with the vertical groove 13a and the vertical groove 13a. Then, the bulb base 14 is positioned below the spacer 12,
Further, when the protruding portions 13c, 13c of the spacer 12 are united at the positions corresponding to the grooves 15, 15 of the base 14, both are fitted in a concave and convex shape,
The spacer 12 and the light emitting unit 10 are attached to the spacer 14. Then, between the end 4a of the lead frame exposed from the translucent resin 11 and the base 14, and between the lead wire 16a of the resistor 16 and the contactor.
The assembly of the light emitting diode lamp is completed by soldering the 18 and fixing them electrically and mechanically.

[0005]

However, in the conventional light emitting diode lamp, since the light emitting unit and the base are coupled by using an adhesive, there are variations in the fixing strength depending on the amount of the adhesive applied, and the work is difficult. There is a drawback in that workability is poor because it takes time to cure the adhesive and the number of steps. In addition, the light emitting unit and the base are coupled by the concave and convex fitting, and the light emitting unit is prevented from rotating in the right and left directions by the convex and concave fitting, but the light emitting unit is prevented from coming off in the upward direction. Since it is done by soldering one end of the lead frame and the base,
It has a drawback that it cannot be sufficiently prevented.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a light emitting diode lamp in which the light emitting unit and the base are coupled without using an adhesive and the light emitting unit is prevented from coming off with respect to the base.

[0007]

In order to solve the above-mentioned problems, a light emitting diode lamp of the present invention comprises a cylindrical body, an LED chip being housed in an opening in its upper surface, and a sealing agent being filled therein. In a light emitting diode lamp in which a base unit and an electrical connection base are fitted, at least one recess is formed on the outer periphery of the base of the light emitting unit to be fitted into the base, and the recess of the base of the base of the light emitting unit is formed. A claw portion having a width substantially corresponding to the opening of the recess is formed in the recess at a position corresponding to, and the claw is bent into the recess to lock the base to the light emitting unit. It is characterized by having done.

[0008]

According to the above-described structure, the base of the base is bent at its upper claw to be engaged in the recess of the lower side of the light emitting unit, and the upper opening end is the upper end of the light emitting unit. And is attached to the light emitting unit.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a perspective view of a light emitting diode lamp showing an embodiment of the present invention, FIG. 2 is a sectional view of the structure of FIG. 1, and FIG. 3 is an exploded perspective view of the light emitting diode lamp. The same members as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted.

In the figure, a light emitting unit 1 is provided with a base 2
Is formed in the lower side portion 6a fitted in the upper surface opening portion of the light emitting portion unit 1 fitted in the upper surface opening portion, and the base 2 is formed in the lower side portion 6a of the light emitting unit 1 fitted in the upper surface opening portion. A claw portion that is bent into the concave portion 22 at a position corresponding to the concave portion 22 and that engages with the lower side portion 6a of the light emitting unit 1.
Forming 21. The opening area of the concave portion 22 is formed to be substantially the same as that of the claw portion 21, and the concave portion 22 engages with the claw portion 21 when the claw portion 21 is bent and is engaged in the light emitting unit 1. It has a step portion 23 for preventing the above from coming off. The claw portion 21 is bent into the concave portion 22, and both ends of the claw portion 21 are locked to both side surfaces of the concave portion 22 and the inside of the claw portion 21 is engaged with the step portion 23 of the concave portion 22, The light emitting unit 1 is prevented from rotating in the left-right direction with respect to the base 2 and is prevented from coming off in the upward direction. Reference numeral 24 is a vertical groove formed at the upper open end of the base 2, and the vertical groove 24 is formed corresponding to the lead-out portion of the one end 4a of the lead frame exposed to the outside of the light emitting unit 1.

In the above-described structure, the light emitting diode lamp is assembled by engaging the light emitting unit 1 with the abutting portion 6b of the reflecting cylinder 6 at the upper open end of the base 2 and the reflecting cylinder 6.
The concave portion 22 of the lower side portion 6a is inserted so as to correspond to the claw portion 21 at the open end of the upper surface of the mouthpiece 2. At this time, one end 4a of the lead frame exposed to the outside of the reflection cylinder 6 is introduced into the vertical groove 24, and the lead wire 16a of the resistor 16 is penetrated through the hole of the contact 18 of the base 2. Then, the claw portion 21 of the base 2 is pressed and bent into the recess 22 of the light emitting unit 1 by a dedicated jig or the like. The bent claw portion 21 is placed in the recess 22 and
21 The inner side engages with the step 23 in the recess 22 and its claw
Both ends of 21 are inserted by engaging both side surfaces of the recess 22. Then, by assembling the one end 4a of the lead frame exposed to the outside, the base 2 and the lead wire 16a of the resistor 16 and the contact 18 by soldering and fixing, the assembly of the light emitting diode lamp is completed.

FIG. 4 is an exploded perspective view of a light emitting diode lamp showing another embodiment of the present invention. In the figure,
The claw portions 21a of the base 2 are formed by notching in a substantially U-shape on the upper side surface of the base 2, respectively.
The concave portions 22 are formed at positions corresponding to the claw portions 21 of the base 2 in which the lower portion 6a of the light emitting unit 1 is fitted in the upper surface opening of the base 2. In FIG. 4, the claw portion
21a shows a state in which the base 2 is bent. The assembly of the light emitting unit 1 and the base 2 is omitted because it is the same as the above description.

The claw portion 21 thus formed on the upper side surface of the base 2 is bent and inserted into the concave portion 22 formed in the lower side portion 6a of the reflection tube 6 of the light emitting unit 1, and the claw portion 21 is formed into the concave portion 22. Since the light emitting unit 1 is attached to the base 2 by engaging with the inside, the light emitting unit 1 and the base 2 can be securely attached without using an adhesive.
Can be combined. Further, the light emitting unit 1 can be prevented from coming off in the upward direction with respect to the base 2 by engaging the inside of the claw portion 21 with the stepped portion 23 of the concave portion 22, and the claw portion 21 can be prevented from rotating in the left-right direction. This can be done by engaging both ends of the recess with both side surfaces of the recess 22.

In each of the above-described embodiments, the claw portion 21 of the base 2 and the recess 22 of the light emitting unit 1 are formed at three locations, but the claw portion 21 and the recess 22 may be formed at one location or a plurality of locations. May be.

[0015]

As described above, the light emitting diode lamp according to the present invention comprises a light emitting unit which is made of a cylindrical body and has an LED chip housed in the upper opening and is filled with a sealant, and an electrical connection base. In a fitted light emitting diode lamp, at least one recess is formed on the outer periphery to be fitted into the base of the light emitting unit, and the recess is opened at a position corresponding to the recess of the light emitting unit of the base. By forming a bendable claw portion in the recess having a width substantially corresponding to, and bending the claw portion into the recess and locking the base to the light emitting unit, the light emitting unit and the base are separated. It can be joined without using an adhesive, and since the clasp of the base is bent into the recess of the light emitting unit to engage it, the base is joined to the light emitting unit. Effect that can be subjected to retaining in the upward direction of the light emitting unit against is obtained.

[Brief description of drawings]

FIG. 1 is a perspective view of a light emitting diode lamp showing an embodiment of the present invention.

FIG. 2 is a sectional view of the configuration of FIG.

FIG. 3 is an exploded perspective view of a light emitting diode lamp

FIG. 4 is an exploded perspective view showing a different embodiment of the present invention.

FIG. 5 is a sectional view showing the structure of a conventional light emitting diode lamp.

FIG. 6 is an external perspective view of a light emitting diode lamp showing a conventional example.

7 is an exploded perspective view of FIG.

[Explanation of symbols]

 1 Light Emitting Unit Unit 2 Base 3 LED Chip 6 Reflecting Tube 7 Sealant 21 Claw 21a Claw 22 Recess

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tetsuya Mogi 1-1 No. 1 Tanabe Nitta, Kawasaki-ku, Kawasaki-shi, Kanagawa Fuji Electric Co., Ltd.

Claims (3)

[Claims] 1. A light-emitting diode lamp comprising a cylindrical body, an LED chip being housed in an upper surface opening thereof, and a light-emitting unit unit filled with a sealant and an electrical connection base being fitted together. At least one recess is formed in the outer periphery of the light emitting unit that is fitted into the base, and the base has a width substantially corresponding to the opening of the recess at a position corresponding to the recess of the light emitting unit in the base. A light-emitting diode lamp, wherein a bendable claw portion is formed, and the claw portion is bent into the recess to lock the base to the light emitting unit. 2. The light-emitting diode lamp according to claim 1, wherein the claw portion of the base is formed by cutting out both ends of an opening end portion of an upper surface of the base. 3. The light-emitting diode lamp according to claim 1, wherein the claw portion of the base is notched in a U shape on the upper side surface of the base.