JPH1116412A - Back lamp socket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the fitting work and the replacing work of a back lamp on a board. SOLUTION: Terminals 30 are disposed in a socket body 11 holding an LED 6 so as to be free in attaching and detaching to form a back lamp socket 10. The socket body 11 is equipped with an engage protrusion portion 20 mounted in the mounting opening 5 of a board 1 together with the LED 6 from its back face side and protruding outward from the surface of the board 1, and a flange portion 18 abutting onto a board back face at a mounting time of the engage protrusion portion 20 in the mounting opening 5. When the socket 10 is mounted in the mounting opening 5 from the back face side so that the flange portion 18 abuts onto the board back face and the socket 10 is turned by a predetermined amount in a state where the engage protrusion portion 20 protrudes outward from the board surface, at least one part of the engage protrusion portion 20 is moved onto the board surface so as to be engaging held by the board. Then, the terminal end portions 30, 36 disposed on the socket 10 abut and touch onto the circuit patterns 4a, 4b of the board back face.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a socket for holding a back lamp (for example, an LED) used for lighting an instrument panel or the like of an automobile.

[0002]

2. Description of the Related Art LE for lighting instrument panels and the like.
It has been conventional to use a light emitting body such as D (light emitting diode) as a back lamp. In general, such a back lamp device is configured such that a substrate on which an LED (back lamp) is attached is arranged on the rear side of the device to be illuminated, and the device is illuminated from behind by the LED. In the conventional back lamp device, the leads of the LED are directly inserted into the through holes of the substrate, and are fixed by performing soldering.

[0003]

However, in such a configuration, it is necessary to solder the leads for each LED, and there is a problem that the work of mounting the LEDs is troublesome. Furthermore, if the LED itself breaks down and needs to be replaced, it is necessary to melt the solder, pull out the lead from the through hole, remove the LED from the board, and then solder and attach a new LED. The problem was that the work was troublesome and the replacement work was difficult. For this reason, conventionally, when an LED breaks down, the board itself including the LED is replaced, which has been a factor of shortening the life of the board device.

The present invention has been made in view of such a problem.
The mounting work on the board is easy and the back lamp (L
It is an object of the present invention to provide a back lamp socket having a configuration in which replacement of an ED or the like can be easily performed.

[0005]

In order to achieve the above object, according to the present invention, a terminal member is provided in a socket body for removably receiving and holding a light emitter (eg, LED) for a back lamp. To form a socket for a back lamp. The socket body is mounted with the luminous body in a mounting opening of the substrate from the back side while receiving and holding the luminous body, and has a locking protrusion that protrudes outward from the surface of the substrate. A flange portion that contacts the rear surface of the board when mounted in the mounting opening, and the socket body is mounted in the mounting opening from the rear surface side of the board so that the flange portion contacts the rear surface of the board and the locking protrusion When the socket body is rotated by a predetermined amount in a state in which the projection protrudes outward from the substrate surface, at least a part of the locking projecting portion rides on the surface of the substrate and is locked and held by the substrate. Further, the terminal member is disposed on the socket body with one end exposed on the upper surface of the flange portion. When the socket body is mounted in the mounting opening, rotated and locked and held on the board, the terminal member is exposed in this manner. The one end portion makes contact with a circuit pattern formed on the back surface of the substrate.

In the back lamp socket having such a configuration, the locking projection is inserted into the mounting opening of the substrate from the back side in a state where the luminous body is received and held in the socket body, and then it is simply rotated. Thus, a part of the locking projection can ride on the surface of the substrate and be locked and held by the substrate. For this reason, the mounting work of this socket is very simple. When the light-emitting body (LED, etc.) received and held in the socket body breaks down, the socket can be removed from the board simply by performing the reverse operation, and the socket is attached to the socket in this state. The luminous body can be easily replaced simply by replacing the luminous body with a new one and mounting the socket on the substrate again.

In the back lamp socket of the present invention, an electric component such as an electric resistor may be detachably mounted on the socket body. In this case,
The terminal member includes a first terminal having one end exposed to the upper surface of the flange portion to form a first connection portion and another end forming a first connector portion connected to one lead of the light emitting body; A first connecting portion which is exposed on the upper surface of the portion to form a second connecting portion and the other end of which is connected to one terminal portion of the electric component;
A second terminal forming a terminal portion and a second connector portion having one end connected to the other lead of the light emitter and a second terminal portion having the other end connected to the other terminal portion of the electric component And a third terminal.

With this configuration, it is not necessary to dispose an electric resistance or the like used together with the LEDs on the substrate, and the configuration of the substrate can be simplified. Further, since the electric resistance is detachable from the socket, it is possible to easily replace only the electric resistance with respect to the socket when the electric resistance fails.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a back lamp socket 10 according to the present invention,
And the substrate 1 to which the socket 10 is attached. The substrate 1 is provided with a mounting hole 2 for mounting a socket having a through hole shape and a mounting hole 2.
And a pair of notches 3 formed at positions diametrically opposed to each other, and a socket mounting opening 5 is formed by the mounting holes 2 and the notches 3. Also, substrate 1
The circuit patterns 4a and 4b at least close to the notch 3 are formed on the back surface of the.
Electrical connection is made in the circuit patterns 4a and 4b.

On the other hand, as shown in more detail in FIG. 2, the back lamp socket 10 includes a socket body 11 molded from an insulating resin or the like, and first to third sockets 11 having a shape shown in detail in FIG. It comprises terminals 30, 35, and 40. The LED 6 is detachably attached to the upper surface of the socket 10, and the electric resistor 8 is detachably attached to the inside of the lower surface (see FIGS. 5, 6 and the like). LED
Reference numeral 6 includes a light emitting unit 6a, a base 6b, and a pair of leads 6c and 6d projecting downward from the base 6b.

As shown in FIGS. 3 to 6, the socket body 11 has a disk-shaped flange portion 18 formed at its upper portion and having a maximum diameter, and the lower side of the flange portion 18 is formed in a substantially cylindrical shape. ing. A pair of locking projections 20 are formed on the upper surface of the flange 18 so as to face each other in the diametrical direction and protrude upward. This locking projection 20
Has a concave portion 21 on the outer surface side, has a positioning surface 22 on a side surface of the concave portion 21, and also has an eave portion 23 that covers the concave portion 21 from above. Further, a cylindrical surface 24 is formed on the inner surface side of the locking protrusion 20, and a first holding protrusion 25 protruding inward is formed above the cylindrical surface 24.

As shown in detail in FIGS. 5 and 6, inside the socket body 11, a space 13 opened on the lower surface side is provided.
Are formed. As can be clearly understood from the drawing, the space 13 is for mounting the electric resistance 8 from the lower surface side, and a pair of second holding projections 14 for holding the mounted electric resistance 8 are provided on the socket body 11. (See FIG. 6). Also, four vertical through holes extending from the space 13 to the upper surface of the flange portion 18 are formed, and first to third terminals 30, 35, and 40 are inserted and arranged in these through holes as illustrated. ing.

More specifically, first, a first terminal 30 formed in a substantially U-shape is mounted by being press-fitted from the space 13 side into two through holes on the left side in FIG. At this time, one end (the left end in FIG. 5) of the first terminal 30 protrudes upward from the upper surface of the flange portion 18, and the protruding portion is bent outward at a right angle to form the first connection portion 31. In this state, the first connection portion 31 protrudes slightly above the upper surface of the flange portion 18. The other end of the first terminal 30 is formed in a tuning fork shape (see FIG. 6), and
The connector portion 32 is formed, and is located in the second through hole 12a from the left in FIG. 5 (see FIG. 2).

The second terminal 35 is mounted by being press-fitted from the space 13 side into the rightmost through hole in FIG. At this time, one end (upper end) of the second terminal 35 is connected to the flange portion 18.
Projecting upward from the upper surface of the second connecting portion 36, and this projecting portion is bent outward at a right angle to form the second connecting portion 36. The second
The connecting portion 36 also projects slightly above the upper surface of the flange portion 18. The other end of the second terminal 35 projects into the space 13, and is connected to the terminal of the electric resistance 8 by the first terminal portion 37.
Is formed.

The third terminal 40 is press-fitted from the space 13 into the second through hole 12b from the right in FIG. At this time, one end (upper end) of the third terminal 40 is formed in a tuning fork shape, and the second connector portion 41 is formed.
Are formed in the through hole 12b. on the other hand,
The other end of the third terminal 40 protrudes into the space 13 and has an electric resistance 8.
And a second terminal portion 42 that is in contact with the terminal.

With the socket 10 having the above structure, L
A case where the ED 6 is attached to the substrate 1 will be described. In this case, first, the LED 6 and the electric resistance 8 are attached to the socket 10. The LED 6 is attached by pressing the LED 6 against the upper surface of the socket 10 as shown by an arrow A in FIG. At this time, the leads 6c and 6d of the LED 6
LED into the through holes 12a and 12b.
Press 6. As a result, the leads 6d, 6d enter the through holes 12a, 12b and enter the first and third terminals 3d.
The first and second tuning fork-shaped first and second connector portions 32 and 41 receive the same. Here, the outer diameter of the base 6 b of the LED 6 is a diameter received by the cylindrical surface 24 formed on the inner surface side of the locking projection 20, but is larger than the interval between the pair of first holding projections 25. Therefore, when the LED 6 is pressed as described above, the base 6 b elastically deforms the pair of first holding projections 25, pushes outward and spreads them into the cylindrical surface 24. When the base 6b is completely inserted into the cylindrical surface 24, the action of pushing and expanding the first holding projection 25 is stopped, and this returns to the original position, and as shown in FIG.
D6 is locked and held.

On the other hand, when the electric resistance 8 is mounted, the electric resistance 8 is pushed into the space 13 from the lower surface side of the socket 10 as shown by an arrow B in FIG. Here, the second holding projection 1
The interval of 4 is smaller than the width of the electric resistance 8 and the electric resistance 8
Enters the space 13 while elastically deforming and expanding the second holding projection 14. When the electric resistance 8 completely enters the space 13, the second holding projection 14 returns to the original state and locks and holds the electric resistance 8. At this time, the electric resistance 8 is received and fixedly held by the upper wall 15 of the internal space.
Further, in this state, one terminal of the electric resistor 8 contacts the first terminal portion 37 and the other terminal is connected to the second terminal portion 4.
2 and is fixedly held between the terminal portions 37 and 42.

The socket 10 on which the LED 6 and the electric resistance 8 are mounted as described above is then mounted in the mounting opening 5 from the back side of the substrate 1 as shown by an arrow C in FIG. This mounting is performed such that the LED 6 is inserted into the mounting hole 3 and the locking projection 20 is inserted into the cutout 3, and is inserted until the upper surface of the flange portion 18 contacts the rear surface of the substrate 1. , LED 6 and locking projection 2
The upper part of 0 protrudes upward from the surface of the substrate 1. And
When the socket 10 is rotated in the direction of arrow D in this state,
The portion forming the cutout 3 of the substrate 1 is the locking projection 2
0 recess 21. This rotation is performed until the portion forming the cutout portion comes into contact with the positioning surface 22, and the surface of the substrate portion that has thus entered the concave portion 21 is covered by the eave portion 23. For this reason, in this state, the socket 10 cannot be pulled out from the board 1, and the socket 10 is fixed to the board 1.

Here, as described above, the circuit patterns 4a and 4b are formed on the back surface of the board 1. However, while the circuit patterns 4a and 4b are fixed to the board 1 as described above, First and second slightly projecting from the top surface
The connection portions 31 and 36 overlap and contact these circuit patterns 4a and 4b. Thereby, the circuit patterns 4a,
4b is electrically connected to the first and second connection portions 31 and 36, respectively. In the free state, the first and second
Although the connection portions 31 and 36 slightly protrude upward, when the flange portion 18 is in contact with the back surface of the substrate 1, the connection portions 31 and 36 are elastically deformed by being pushed by the back surface of the substrate 1. Have gained. A groove 19 is provided below the first and second connection portions 31 and 36 on the upper surface of the flange portion 18 so that the first and second connection portions 31 and 36 can be elastically deformed.

In the above description, the case where the socket 10 is mounted on the substrate 1 has been described. However, when the socket 10 is removed from the substrate 1, the reverse operation may be performed. For this reason, attachment and detachment of the socket 10 is very easy.

[0021]

As described above, according to the present invention,
With the luminous body received and held in the socket body, the locking projection is inserted from the back side into the mounting opening of the board, and only by rotating it, a part of the locking projection is placed on the surface of the board. And the terminal member can be locked and held on the substrate and the terminal member can be brought into contact with the circuit pattern formed on the back surface of the substrate, so that the mounting work of this socket is very simple. If the light-emitting body (LED, etc.) received and held in the socket body fails, the above operation is performed to remove the socket from the board, replace the light-emitting body with a new one, and put the socket on the board again. Simply by attaching, the luminous body can be easily replaced.

In the back lamp socket of the present invention, an electric component such as an electric resistor may be detachably mounted on the socket body. With such a structure, the electric lamp can be used together with the LED. It is not necessary to dispose electrical resistance or the like on the substrate, and the configuration of the substrate can be simplified. Further, since the electric resistance is detachable from the socket, it is possible to easily replace only the electric resistance with respect to the socket when the electric resistance fails.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a socket for a back lamp according to the present invention and a substrate to which the socket is attached.

FIG. 2 is a perspective view showing a socket for a back lamp according to the present invention.

FIG. 3 is a plan view showing a socket for a back lamp according to the present invention.

FIG. 4 is a front view showing a socket for a back lamp according to the present invention.

FIG. 5 is a sectional view showing a back lamp socket according to the present invention.

FIG. 6 is a sectional view showing a back lamp socket according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Substrate 5 Socket mounting opening 6 LED 8 Electric resistance 10 Socket 11 Socket body 18 Flange part 20 Locking protruding part 30, 35, 40 Terminal

Claims (2)

[Claims] 1. A socket body for detachably receiving and holding a light emitter for a back lamp and a terminal member disposed in the socket body, and mounted in a mounting opening formed in the substrate from the back side of the substrate. In a socket for a back lamp to be used, the socket body is mounted in the mounting opening from the back side of the substrate together with the luminous body in a state of receiving and holding the luminous body, and is mounted outward from the front surface of the substrate. A locking projection that projects into the mounting opening, and a flange that contacts the rear surface of the board when the locking projection is mounted in the mounting opening. The socket body is mounted in the mounting opening, with the flange portion abutting against the back surface of the substrate and the locking protrusion protruding outward from the surface of the substrate. By rotating a predetermined amount, at least a part of the locking projection portion rides on the surface of the substrate and is locked and held by the substrate, and one end of the terminal member has the flange portion. The one end is formed on the back surface of the substrate at the one end when the socket body is mounted in the mounting opening, rotated and locked and held by the substrate, and is disposed on the socket body exposed to the upper surface. A socket for a back lamp, which comes into contact with a circuit pattern. 2. An electric component is detachably mounted on the socket body, and one end of the terminal member is exposed to an upper surface of the flange portion and comes into contact with the circuit pattern. A first terminal forming a first connector portion that forms one connection portion and the other end is connected to one lead of the light emitting body; one end is exposed on an upper surface of the flange portion and abuts on the circuit pattern; A second terminal forming a first terminal portion connected to one terminal portion of the electric component while forming a second connection portion to be contacted; and one end connected to the other lead of the light emitting body 2. A second connector part comprising a second terminal part and a third terminal forming a second terminal part connected to the other terminal part of the electric component at the other end. Socket for back lamp.