JPH08250075A - Bulb device and its mounting structure - Google Patents

Abstract

PURPOSE: To fix a bulb by only inserting, so that electrical contact can be obtained, by electrically connecting an external conductor of a baseless bulb to a conductive part of the mounted part, in the case of stopping a socket main unit to the mounted part. CONSTITUTION: When a bulb device 1 is pushed into a mounting part 7, a stop part 5 of a socket 3 and an external conductor fixed part 6, while brought into slide contact with a side wall of a fixed recessed part 8 in the mounted part 7 and while elastically deformed, are advanced into the recessed part 8. When the stop part 5 of the socket 3 and an end part on a mounting side to a socket main unit 4 of the fixed part 6 are advanced to lead to a bottom part 8a of the recessed part 8, moving the device 1 in an inserting direction is regulated. Simultaneously with this regulation, an engaging stepped part 5b of the stop part 5, elastically deformed to an inner side by inserting the device 1, passes through a flange part 8b in an inlet of the recessed part 8, consequently to be elastically reset, and the device 1 is fixed to the mounting part 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a capless light bulb device used for illuminating an instrument panel of an automobile or the like, or an alarm device, and a mounting structure thereof.

[0002]

2. Description of the Related Art FIGS. 11 to 15 show a light bulb device generally used in the past.
Are disclosed in. In this light bulb device, the base end is crushed and sealed, and the crushed and sealed portion 102 is connected to the external conducting wire 103.
A baseless bulb 101, which is derived by
A socket body 106 having an insertion recess 107 into which the crushable sealing portion 102 of the baseless bulb 101 is inserted, and a flange portion 111 formed on the outer periphery of the socket body 106.
And the mounted base 118 between the flange portion 111 and
And the socket body 1 is attached to the mounted base 118.
06 is mounted on the engaging piece projection 112, and one end is inserted into the insertion recess 107 of the socket body 106 to be electrically connected to the external conducting wire 103, and the other end is configured as a power supply terminal 115. A member 114 is provided, and a holding contact portion 116 is formed at one end side of the conductive member 114 to insert and guide the external lead wire 103 when the baseless electric bulb 101 is inserted and to press the outer lead wire 103 by its own elasticity. It is characterized by being.

In this light bulb device, as shown in FIG. 16, the engaging piece projection 112 of the socket body 106 and the notch 120 are aligned and the socket body 106 is inserted into the mounting hole 121.
By rotating the socket body 106, the locking piece projection 1
The printed circuit board 119 is sandwiched between the printed circuit board 119 and the flange portion 111, whereby the light bulb device is mounted on the printed circuit board 119.

[0004]

However, in such a conventional light bulb device, when attaching the light bulb device to the mounted portion, two operations of inserting the light bulb socket into the mounted portion and further rotating are required. Met. Furthermore, the structure of the light bulb device and the mounted portion is complicated, the number of parts is large, and the manufacturing cost is high.

An object of the present invention is to eliminate the drawbacks of the above-described conventional light bulb device and its mounting structure, and the light bulb device can be fixed to the mounted portion just by inserting and the electric light bulb device can be electrically contacted. And its mounting structure.

Another object of the present invention is to provide a socket having no terminals, and to provide a light bulb device and its mounting structure which can reduce the number of parts and manufacturing cost by using the socket. Is to provide.

[0007]

According to the first aspect of the present invention,
A baseless bulb having an external lead wire, a socket body having a light bulb accommodating portion formed in a concave shape for inserting and fixing the bulb, and an external lead wire for fixing the bulb, integrally with the socket body The formed external conductor fixing part,
A light bulb device comprising an engaging portion integrally formed with the socket body for engaging the socket body with the attached portion, wherein when the socket body is attached to the attached portion, The external conducting wire of the baseless bulb is electrically connected to the conductive portion of the mounted portion.

According to a second aspect of the present invention, the external conductor fixing portion is an elastic arm projecting from the socket body and extending along a side surface of the socket body, and the external conductor wire of the baseless bulb is attached to an outer surface of the elastic arm. Is fixed.

According to a third aspect of the present invention, an engaging step for engaging the mounted portion is an elastic arm that projects from the socket body and extends along the side surface of the socket body. A portion, and the socket body is detachably fixed to the mounted portion.

The invention according to claim 4 is characterized in that an insertion port for an external lead wire of the light bulb is provided at a bottom portion of the light bulb accommodating portion.

According to a fifth aspect of the present invention, there are provided a baseless electric bulb having an external lead wire, a socket body having a light bulb accommodating portion formed in a concave shape for inserting and fixing the electric bulb, and an external lead wire of the electric bulb. The external conductor fixing portion is integrally formed with the socket body for fixing, and the engaging portion integrally formed with the socket body for locking the socket body to the mounted portion. A structure for mounting a light bulb device, wherein the external lead wire of the baseless bulb is electrically connected to the conductive portion of the mounted portion when the socket body is locked to the mounting portion, and the light bulb device is housed in the mounting structure. A housing recess provided in the mounted portion, and an engaging portion that is provided at an entrance of the housing recess and engages with a locking portion of the light bulb device, and the light bulb device is inserted into the housing recess. When fixed, the side wall of the accommodation recess Conductive portion provided on is characterized in that it is connected to an external conductor and electrically the bulb.

[0012]

According to the first aspect of the present invention, by fixing the socket to the mounted portion, the external lead wire of the baseless bulb can be directly electrically connected to the conductive portion of the mounted portion.

According to the second aspect of the invention, it is possible to ensure the electrical connection between the external lead wire of the electric bulb and the conductive portion of the mounted portion.

According to the third aspect of the invention, the socket body can be detachably fixed to the mounted portion.

According to the fourth aspect of the invention, the external lead wire of the light bulb can be smoothly led out from the light bulb accommodating portion.

According to the invention described in claim 5, the socket can be fixed and the electric bulb can be electrically connected only by inserting the electric bulb device. Further, the external lead wire of the light bulb can be directly electrically connected to the conductive portion.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on the embodiments shown in the drawings. FIG. 1 is a perspective view showing a light bulb device according to the present application and a mounted portion of the light bulb device. This light bulb device 1
Is composed of a light bulb 2 and a socket 3 for accommodating the light bulb 2, and is inserted and fixed in the mounted portion 7 from the direction shown by the arrow.

FIG. 2 is a perspective view of a light bulb 2 used in the light bulb device 1 according to the present invention. The electric bulb 2 is a so-called baseless electric bulb, the base portion of which is crushed and sealed, and the external conducting wire 12 is extended from the crushed and sealed portion 16. In addition, 17 is a filament.

As shown in FIG. 1, the socket 3 made of synthetic resin or the like has a socket body 4, an external conductor fixing portion 6,
It is composed of an engaging portion 5 with the attached portion 7 and a light bulb support 12. The socket body 4 is formed in a substantially rectangular tubular shape, and accommodates the electric bulb 2 in a concave electric bulb accommodating portion provided therein. In addition, the light bulb 2 protrudes from the end of the socket body 4 on the light bulb side and is formed into a half-cylindrical shape.
Supported by.

The external conductor fixing portion 6 is formed as an elastic arm projecting from the end of the socket body 4 on the light bulb side and extending toward the socket bottom portion 4a along two opposite side surfaces of the socket body 4. The outer conductor fixing portion 6 is formed in a convex arcuate shape on the outer side, and the outer conductor 12 of the light bulb 2 is locked in the vicinity of the attachment portion to the socket body 4, so that the protrusion portion protrudes from the attachment portion. And an external conducting wire locking portion 6a including an arm extending in the horizontal direction at the free end of the protruding portion.
Is provided.

The locking portion 5 projects from the end of the socket body 4 on the light bulb side, like the external lead wire fixing portion 6, and extends along the two side surfaces of the socket body 4 facing each other.
The attached part 7 is formed as an elastic arm extending toward a.
Has an engagement step portion 5b that engages with.

Further, the bottom surface 4a of the socket body 4 is flat and provided with two insertion holes 4b through which the external lead wires 10 of the light bulb 2 are inserted.

Next, the mounted portion 7 to which the light bulb device 1 according to the present invention is mounted will be described with reference to FIG.

In the present embodiment, the mounted portion 7 is composed of the bulb insertion hole 13, the fixed concave portion 8 of the bulb device 1, and the copper foil 9 of the flexible printed wiring board 11. The light bulb insertion hole 13 has a diameter that allows the light bulb 2 of the light bulb device 1 to pass through, and the fixed recessed portion 8 is formed in a substantially rectangular shape. , The external wire fixing portion 6 is engaged. Copper foil 7 of flexible printed wiring board 11
Are arranged on the two side walls of the fixed recess 8 that face each other, and are configured to be electrically connected to the external lead wire 10 of the light bulb device 1.

Next, the procedure for attaching the light bulb 2 of the light bulb device 1 to the socket 3 will be described.

FIG. 5 is a plan view of the light bulb device 1 as viewed from above the light bulb 2. The external lead wire 10 of the light bulb 1 is first provided with two insertion holes 4b provided in the bottom portion 4a of the socket body 4.
And is guided to the outside of the socket body 4.

FIG. 6 is a view of the light bulb device 1 as viewed from the bottom 4a of the socket. The external conducting wire 10 of the light bulb 2 guided to the outside of the socket from the insertion hole 4b is guided toward the side wall of the socket body 4 along one diagonal line of the rectangular bottom portion 4a. In this case, in order to ensure the guidance of the external conductor, the guide groove 4c (see FIG. 1) of the external conductor 10 is formed in the bottom portion 4a of the socket.
5) is preferably provided.

Next, as shown in FIGS. 5, 9 and 10, the outer conductive wire 10 has an outer side surface 4d of the socket body 4.
Is guided upwards along. And the external conductor 10 is
After being hooked on the external conductor locking portion 6a provided near the mounting portion of the external conductor fixing portion 6 to the socket body 4, the external conductor fixing portion 6 is guided downward on the outer side surface of the external conductor fixing portion 6. Further, the outer conductor 10 reaches the free end of the outer conductor fixing portion 6 and then is inverted, and is guided again upward on the inner side surface of the outer conductor fixing portion 6, and is fixed to the outer conductor fixing portion 6 in this state. It It is desirable to provide a guide groove (not shown) similar to the guide groove 4c on the inner side surface of the outer conductor fixing portion 6.

Next, a method of mounting the light bulb device 1 on the mounted portion 7 will be described.

As shown in FIG. 1, from the light bulb side, the light bulb device 1
Is inserted into the fixed concave portion 8 of the mounted portion 7. When the light bulb device 1 is pushed into the mounted portion 7, the locking portion 5 of the socket 3 and the external lead wire fixing portion 6 are in sliding contact with the side wall of the fixed concave portion 8 of the mounted portion while elastically deforming inside the fixed concave portion 8. proceed. Then, the ends of the locking portion 5 of the socket 3 and the external conductor fixing portion 6 on the mounting side of the socket body 4 are fixed concave portions 8 of the mounted portion 7.
When it reaches the bottom portion 8a, the movement of the light bulb device 1 in the insertion direction is restricted. At the same time, the engaging stepped portion 5b of the engaging portion 5 elastically deformed inward by the insertion of the light bulb device 1,
The light bulb device 1 is elastically restored by passing through the flange portion 8b at the entrance of the fixed concave portion 8 of the mounted portion 7, and the light bulb device 1 is fixed to the mounted portion 7, as shown in FIG. When the light bulb device 1 is detached from the mounted part 7, the claws 5a provided at the free end of the locking part 5 are sandwiched from both sides, whereby the locking part 5 is elastically deformed inward, and the locking step part is formed. 5b and the inlet flange portion 8b of the fixed recess 8 are disengaged, and the light bulb device 1 may be pulled out in this state.

FIG. 4 is a cross-sectional view of a state in which the light bulb device 12 of FIG. 3 is attached to a portion to be attached, as viewed from the side. As is clear from this figure, in the mounted state, the external conductive wire 10 of the light bulb 2 is connected to the flexible printed wiring board 1 of the mounting portion 7.
It is electrically connected to the first copper foil 9. Since the external lead wire fixing portion 6 of the socket 3 is formed as an elastic arm, it is always urged outward. Therefore, the external conductor 1
0 is in a pressure contact state with the copper foil 9, and a reliable electrical contact state can be obtained.

[0032]

According to the first aspect of the present invention, it is possible to provide a light bulb device having a socket that does not require a terminal, and the number of parts can be reduced, so that the manufacturing cost of the light bulb device can be reduced.

According to the second aspect of the present invention, it is possible to provide a light bulb device in which the electrical connection between the external lead wire of the light bulb and the conductive portion of the mounted portion is reliable.

According to the third aspect of the invention, it is possible to provide a light bulb device in which the socket body and the mounted portion can be attached and detached.

According to the invention described in claim 4, the external lead wire of the light bulb can be smoothly led out from the light bulb housing portion,
It is possible to provide a light bulb device that can be easily assembled.

According to the fifth aspect of the invention, it is possible to provide a mounting structure for a light bulb device, which is easy to mount.

[Brief description of drawings]

FIG. 1 is a perspective view of a light bulb device and a mounted portion according to the present invention.

FIG. 2 is a perspective view of a light bulb used in the light bulb device according to the present invention.

FIG. 3 is a cross-sectional view showing a mounting state of a light bulb device according to the present invention on a mounted portion.

FIG. 4 is a cross-sectional view showing a mounting state of a light bulb device according to the present invention on a mounted portion.

FIG. 5 is a plan view of a light bulb device according to the present invention.

FIG. 6 is a bottom view of the light bulb device according to the present invention.

FIG. 7 is a cross-sectional view of the light bulb device of FIG. 5 taken along a plane along the line I-I.

8 is a cross-sectional view of the light bulb device of FIG. 5 taken along a plane along II-II.

FIG. 9 is a side view of the light bulb device according to the present invention.

FIG. 10 is a side view of the light bulb device according to the present invention.

FIG. 11 is an overall perspective view of a conventional light bulb device.

FIG. 12 is a side view of the conventional baseless bulb shown in FIG. 11.

FIG. 13 is a plan view of a socket body of a conventional light bulb device.

FIG. 14 is a cross-sectional view of the light bulb device of FIG. 13 taken along a plane along line III-III.

FIG. 15 is a perspective view of a conductive member used in a conventional light bulb device.

FIG. 16 is a perspective view showing a mounted portion of a conventional light bulb device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Light bulb device 2 Light bulb 3 Socket 4 Socket body 5 Locking part 6 External wire fixing part 7 Attached part 8 Light bulb device fixing recess 9 Conductive part of the attached part 10 Light bulb external conductor 11 Flexible printed wiring board 12 Light bulb support 13 Light bulb Insertion hole

Claims (5)

[Claims] 1. A baseless bulb having an external lead wire, a socket body having a light bulb housing formed in a concave shape for inserting and fixing the bulb, and the socket for fixing the external lead wire of the bulb. The external conductor fixing part is formed integrally with the main body, and the locking part is integrally formed with the socket body for locking the socket body to the mounted part. An outer bulb of the baseless electric bulb is electrically connected to a conductive portion of a mounted portion when the electric bulb device is locked. 2. The external lead wire fixing portion is an elastic arm protruding from the socket body and extending along a side surface of the socket body, and the external lead wire of the baseless bulb is fixed to an outer surface of the elastic arm. The light bulb device according to claim 1, wherein: 3. The engaging portion to the mounted portion is an elastic arm that protrudes from the socket body and extends along the side surface of the socket body, and has an engagement step portion that engages with the mounted portion. The light bulb device according to claim 1, wherein the socket body is detachably fixed to the mounted portion. 4. The light bulb device according to claim 1, wherein an insertion port for an external lead wire of the light bulb is provided in a bottom portion of the light bulb housing portion. 5. A baseless bulb having an external lead wire, a socket body having a light bulb housing formed in a concave shape for inserting and fixing the bulb, and the socket for fixing the external lead wire of the bulb. The external conductor fixing portion integrally formed with the main body, and the locking portion integrally formed with the socket body for locking the socket body to the mounted portion, and the socket body to the mounted portion. When locking
An external structure of the baseless bulb is a mounting structure of a light bulb device electrically connected to a conductive portion of a mounted portion, a housing recess provided in the mounted portion for housing the light bulb device, Provided at the entrance of the housing recess and having an engaging portion that engages with the locking portion of the light bulb device, and when the light bulb device is inserted and fixed in the housing recess, on the side wall of the housing recess. A structure for mounting a light bulb device, wherein the provided conductive portion is electrically connected to an external lead wire of the light bulb.