JPH0722068Y2 - Lamp socket with built-in electronic components - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a lamp socket in which a polar electronic component such as a diode is incorporated.

Prior Art FIG. 14 shows an automatic transmission (hereinafter referred to as A / T) indicator circuit, and FIG. 15 is a configuration diagram.

The inhibit switch 1 has six switches P, R, N, D, 2, 1 for detecting the shift position, and is configured so that only the switch corresponding to the shift position is turned on.

On the other hand, the combimeter 2 is provided with six lamps L _p , L _r , L _n , L _d , L ₂ and L ₁ for notifying the driver of the shift position,
For example, in the P range, the switch P is turned on and only the lamp L _p is turned on.

Further, in order to prevent the lamp which is lit at night from being dazzled, the contact of the relay 4 is turned off and the resistor 5 limits the current to lower the brightness of the lamp when the light switch 3 is on.

Here, the A / T that controls the A / T unit by the shift position
The control unit 6 is connected to each line of the inhibit switch 1.

Therefore, since the A / T control unit 6 correctly detects the shift position when the light switch 3 is ON,
Diodes D1, D2, D3, D4, D5, D6 for preventing inflow are inserted in series with the L _p , L _r , L _n , L _d , L ₂ , L ₁ respectively.

That is, when the light switch 3 is ON, the resistance 5
Is shared by the lower stage, therefore, for example, when the switch P of the inhibit switch 1 is ON, a voltage is also applied to the downstream side of the other switches that are OFF, and therefore the A / T control unit 6 Because it cannot perform accurate detection. This similar structure is shown, for example, in Japanese Utility Model Laid-Open No. 61-2342.

Problems to be Solved by the Invention In the above A / T indicator circuit, the combination meter 2
Since it is necessary to arrange diodes D1 to D6 in addition to the lamps L _p , L _r , L _n , L _d , L ₂ , L _{1 on} the printed circuit board of the diode D1
There is a problem that it takes a lot of space for ~ D6.

Further, as shown in FIG. 15, the case 2a of the combimeter 2 needs recesses for escaping the diodes D1 to D6, which causes a problem that it easily interferes with other parts.

Therefore, the present invention provides a lamp unit with a built-in electronic component that can reduce the space for disposing an electronic component such as a diode.

Means for Solving the Problems In a lamp socket fixed to a board and connected to the board via at least two terminals and having a built-in electronic component, a part having polarity is provided inside a lamp socket body. The lamp socket main body is provided with two lamp connection terminals, one end of the component having the polarity is connected to one of the terminals connected to the substrate, and the other end of the component having the polarity is The lamp socket body is connected to one of the lamp connection terminals, and the other of the lamp connection terminals is connected to another one of the terminals connected to the board. Is provided with an insertion guide portion for positioning and inserting in a direction according to the polarity of.

Function Uses the interior of the lamp socket as a space for installing polar parts.

Further, the lamp socket body, that is, the component having the polarity is attached in an appropriate direction by the insertion guide portion formed on the outer peripheral portion of the lamp socket body.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

In the first embodiment shown in FIGS. 1 to 7, 7 is the above-mentioned A /
It is a lamp socket body used for a T indicator circuit and has a knob 8 and an insertion column portion 10 to be inserted into a substrate 9.

A terminal T ₁ as one terminal and a terminal T ₄ as another terminal are provided on the upper peripheral edge of the knob 8, and the insertion hole of the substrate 9 is provided.
By inserting the insertion column portion 10 into 9a, the contacts (not shown) of the substrate 9 and the terminals T ₁ and T ₄ are connected.

A diode 11 as a component having polarity is built in the knob 8.

As shown in FIG. 1, the diode 11 is connected by soldering or caulking to a terminal T ₁ that comes into contact with the contacts of the substrate 9 and a terminal T ₂ (one lamp connecting terminal) of a lamp 12 described later, and then resin by potting. It is sealed with.

Also, in addition to the terminal T ₄ in contact with the other contact of the substrate 9 the other terminal T ₃ of the lamp 12 (the other lamp connecting terminal) it is connected.

The terminal T ₄ and the terminal T ₁ have an opening of an angle α (α ≠ 180 °).

A mark 13 for indicating the polarity of the diode 11 is written on the lower surface of the knob 8 so that the polarity of the diode 11 can be confirmed from the outside.

The insertion column portion 10 is one in which the lamp 12 is mounted, the terminals T ₂ and T ₃ are connected to the respective contacts 12a, 12b of the lamp 12, and the head of the lamp 12 is the insertion column portion 10. It is supported by the inner wall.

Then, on the outer peripheral portion of the insertion columnar portion 10, there are formed two insertion guide portions 14 (three or more may be provided) which are inserted into holes (not shown) provided in the substrate.

The insertion guide portions 14 are convex portions formed by twisting from the top to the bottom, and each insertion guide portion 14 has an angle β (β ≠
It has a 180 ° opening to prevent incorrect connection.

According to the structure of the above embodiment, the diode 11 is built in the knob 8 of the lamp socket body 7, so that the space for disposing the diode 11 can be saved.

Further, when the lamp socket body 7 is attached to the board 9, the knob 8 is held and the insertion column portion 10 is inserted into the insertion hole 9a of the board 9.
When it is rotated by the twist amount of the insertion guide portion 14,
The terminals T ₁ and T _{4 of the} lamp socket body are connected to the contacts of the substrate 9.

Here, since each insertion guide portion 14 is set to open β (β ≠ 180 °), it is not erroneously assembled.

Moreover, the polarity of the diode 11 after assembling can be easily confirmed by the mark 13.

The diode 11 may be of a chip type as well as a discrete type, and the lid may be covered instead of potting.

Further, the terminal T ₁ and the terminal T ₂ are simultaneously molded during injection molding, but the diode 11 may be molded by injection while being attached to the terminals T ₁ and T ₂ .

Next, FIG. 8 shows a second embodiment of the present invention.

This embodiment is similar to the first embodiment in that the diode 11 is built in the knob 8, but the width dimension of each insertion guide portion 14 of the insertion columnar portion 10 is different. That is, the width dimension of one insertion guide portion 14a is small, and the other insertion guide portion 14b
The width dimension of is large.

Therefore, since it can be attached only to the substrate 9 in a predetermined direction, erroneous assembly can be prevented.

The invention is not limited to the above embodiments,
For example, the following may be used.

That is, as shown in FIG. 9, it is applied to a circuit in which two diodes 11 are provided and a terminal T ₅ is newly added,
It may be applied to a circuit in which a resistor 15 and a transistor 16 are added as shown in the figure.

Also, the diode 11 is not inside the knob 8 but has a structure in which the insertion columnar portion 10 is extended as shown in FIG. 11 and incorporated therein, and further, as shown in FIG.
Also, a structure in which the terminals are connected to the terminals T ₁ and T ₂ after attaching, or a structure in which the terminals T ₁ , T ₂ , T ₃ and T ₄ are mounted on the board 9 and put in the lamp socket body 7 and held by the claws 17 is also adopted. it can.

Advantageous Effects of Invention According to the present invention as described above, a polarized component is built in the inside of the lamp socket body, and the lamp socket body is mounted on the outer peripheral portion of the lamp socket body in a predetermined direction with respect to the substrate. Since the insertion guide part for positioning and inserting is provided, even if there is no space for inserting electronic parts on the substrate etc., it is possible to arrange electronic parts with a simple structure without providing a unit dedicated to electronic parts There is an effect that it becomes possible.

Also, when installing the lamp socket body, the insertion guide part can only be installed in the direction corresponding to the polarity, so that electronic components having polarity will not be damaged by incorrect assembly and the assembly reliability can be improved. The effect is that you can do it.

[Brief description of drawings]

FIG. 1 is a sectional view of a first embodiment of the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a side view of the same, FIG. 4 is a bottom view of the same, and FIG. 5 is a front view of the same valve. 6 is a side view of the valve, FIG. 7 is the same connection diagram, FIG. 8 is a plan view of the second embodiment, and FIGS. 9 and 10 are connection diagrams of other embodiments corresponding to FIG. 7, respectively. FIG. 11 is a side view of another embodiment, FIGS. 12 and 13 are cross-sectional views of a main part of still another embodiment, and FIGS. 14 and 15 are a circuit diagram and a configuration diagram of a conventional technique, respectively. 7 ... Lamp socket body, 9 ... Board, 11 ... Diode,
12 ... lamp, 14 ... insertion guide unit, T ₁ ... terminal (one terminal), T ₂ ... (one lamp connecting terminal), T ₃ ... terminal (the other lamp connecting terminal), T ₄ ... terminal (other One terminal).

Claims (1)

[Scope of utility model registration request] 1. A lamp socket fixed to a board, connected to the board via at least two terminals, and having a built-in electronic component, in which a lamp is mounted, wherein a polar component is built in the lamp socket body. The lamp socket body is provided with two lamp connection terminals, one end of the component having the polarity is connected to one of the terminals connected to the substrate, and the other end of the component having the polarity is connected to the lamp. One of the terminals is connected to the other of the terminals connected to the substrate, and the other of the lamp connection terminals is connected to the other of the terminals connected to the substrate. A lamp socket with a built-in electronic component, characterized in that it is provided with an insertion guide portion for positioning and inserting in a direction according to the above.