JPH02299111A - Luminescence type push button switch - Google Patents

Abstract

PURPOSE:To arrange LEDs on the whole face of a unit with a high degree of freedom and increase the fitted number by providing an LED unit on a base section provided with a switch section. CONSTITUTION:The base section 3 of a main body section is a box opened at the upper section, a switch section 4 is provided at the center of the box, a click dome 8 and a damper rubber 9 are stacked in sequence on it, and a unit 10 arranged with LEDs is fitted on it. Chip-shaped LEDs 33a-33h are die- mounted on chip mount sections 12a-19a respectively. When hooking sections 29 of the base section 3 are coupled with hooking holes 30 of the cap holder 26 of a pressing section 2, the main body section and the pressing section 2 are integrally assembled to constitute a luminescence type push button switch.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a light-emitting pushbutton switch in which a pushbutton switch and a light-emitting section consisting of an LED are assembled together.

[Prior Art] Conventionally, the present inventor (applicant) has filed a patent application for a push button switch with a light emitting section. An illuminated pushbutton switch described in No. 12042 was proposed.

This conventional illuminated pushbutton switch has LEDs installed around the switch section, and the switch section and L
A movable pressing part is attached to the switch body to which the ED is attached.

[Problems to be Solved by the Invention] However, the conventional illuminated pushbutton switch described above has an LED mounting space around the switch section, so the LED mounting space is limited to the area around the switch section. and there wasn't enough space for it. For this reason, there is a drawback that the mounting locations and the number of LEDs to be mounted are limited.

In addition, because illuminated pushbutton switches have restrictions on where and how many LEDs can be installed, sufficient luminance cannot be obtained.
There was a problem in that it was not possible to display the entire image.

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, it is an object of the present invention to provide a light-emitting push button switch that can display a full screen and change the brightness sufficiently.

[Means for Solving the Problems] Next, means for achieving the above object will be described with reference to FIGS. 1 to 4, which correspond to embodiments. The light-emitting pushbutton switch of the present invention is a light-emitting pushbutton switch in which a switch is operated by moving a pressing part 2 with respect to a fixed switch main body 1. and an LED unit that is attached to the upper part of the base, has an LED arranged on the front side, and is provided with a small through hole 11, and a switch body 1, which can be moved freely into the switch body 1. and a pressing section 2 provided with a protrusion 32 that penetrates the through hole 11 of the LED unit 10 and presses the switch section 4.

[Function] Since the switch main body l is configured such that the LED unit lO is provided on the upper part of the base 3 provided with the switch part 4, L and E D can be arranged on the entire surface of the LED unit 10, and the LED unit 10 can be mounted. The degree of freedom in location is improved and the number of attachments can be increased.

[Example] Fig. 1 is an exploded perspective view showing an embodiment of the light-emitting pushbutton switch of the present invention, Fig. 2 is a plan view of the base, and Fig. 3 is an LE
The plan view of the D unit and FIG. 4 are sectional views of the light-emitting pushbutton switch.

First, to explain the structure of the light-emitting pushbutton switch, the first
As shown in the figure, the light-emitting pushbutton switch is composed of a switch body 1 and a pressing part 2.

The switch main body 1 will be described in detail. The base 3 is made of plastic and is a box with an open top, and a switch section 4 is provided in the center of the box.

As shown in FIG. 2, the switch section 4 has contacts 5a, 5b,
5c and other contacts 6a, 6b, and 6c corresponding thereto perform switching operations. Of the two leads 7a, 7b protruding from the side wall of the box, lead 7a is connected to contacts 5a, 5b, 5c, and lead 7b is connected to other contacts 6a, 6b, 6c.

A click dome 8 made of phosphor bronze or the like as a return spring and a damper rubber 9 made of silicone rubber are successively stacked on top of the switch part 4, and further above the click dome 8 is an LED unit IO in which an LED is arranged. is installed.

This LED unit 10 is shown in FIG.

The LED unit 10 is formed to have an outer shape that is almost the same as the outer shape of the base 3 (strictly speaking, a diameter that fits into the inner wall of the base 3), has a through hole 11 in the center, and has a through hole 11 in the upper surface. A lead pattern is formed on. In the vicinity of the fourth floor of this lead pattern, there are chip mounting portions 12a.
-19a and a wire bonding part 12b-19b. Further, the wire bonding portion 19b is connected to the lead 20a, the chip mount portion 16a is connected to the lead 20b, the wire bonding portion 18b is connected to the lead 20c, and the chip mount portion 17a is connected to the lead 20d.

Then, chip-shaped LEDs 33a to 33h are die-mounted on each chip mount part 12a to 19a, respectively.
A wire 21 is bonded between the anode of each LED and the corresponding wire bonding portions 12b to 19b.

Then, as shown in the circuit diagram of Fig. 5, four red LE
The anode of the series connection body of D33h, 33b, 33c, and 33e is drawn out by the lead 20a, the cathode is drawn out by 20b, and the other four green LEDs 33g, 33a, and 33d
, , 33f are connected in series.The anode and cathode of the series connection body are led out by a lead 20c and a lead 20d, respectively.

As shown in FIG. 4, the LED unit 10 configured as described above has four bent leads 20a, 20b, 20c inserted into four rectangular holes 22 provided in the box of the base 3.
, 20d and press the top of the LED unit 10, the circular protrusion 23 provided on the bottom surface of the LED unit 10 is fixed to the circular groove 24 provided in the base 3, and the click button is pressed. A dome 8 and a damper rubber 9 are integrated into the base 3, which is stacked on top of each other.

This prevents flux from entering the contact portion within the switch main body l when the switch is attached to a board after the switch is assembled.

Note that the same effect can be obtained by providing a groove on the lower surface of the LED unit 10 and on the upper surface of the base 3, respectively, and inserting an O-ring into the groove.

With this integrally assembled member, the switch main body 1
is configured.

On the other hand, as shown in FIG. 1, the cap 25 is made of transparent plastic, and a groove corresponding to the hooking part 27 of the cap holder 26 is provided on the inner wall surface.

This cap holder 26 has a square tube shape, and the surface inside the opening on the top surface is slightly inclined toward the center.

Further, a locking hole 30 corresponding to the locking portion 29 of the base portion 3 is formed in the cap holder 26 .

The diffuser plate 28 is made of plastic mixed with a diffusing agent to diffusely reflect light, and its periphery is inclined at a predetermined angle. Furthermore, it is possible to engrave an appropriate name list or the like on the surface of the diffuser plate 28.

Further, the actuating plate 31 is provided with a protrusion 32 at the center of the bottom surface thereof, which penetrates into the through hole 11 of the LED unit 10.

Each of the above members is assembled so that the diffuser plate 28 is placed on the upper surface of the cap holder 26, and the hook part 27 is bolted to the groove of the cap, and the cap 25, the diffuser plate 28, and the cap holder 26 are assembled together. It is attached. The bottom opening of this integrally assembled item, that is, the cap holder 2
An actuation plate 32 is attached to the lower surface of 6. The pressing part 2, which is equipped with the above-mentioned actuating plate 32 and corresponds to a push button in a push button switch, is constituted by an integrally assembled member.

Then, the base 3 is inserted into the latching hole 30 in the cap holder 26.
By loosely fitting the hooking portion 29 in the switch body 1 and the pressing portion 2, a light-emitting push button switch is constructed. In this assembly state, the protrusion 32 of the actuating plate 31 in the pressing part 2 passes through the through hole 11 of the LED unit 10 and is placed in opposition to the damper rubber 9. Further, the inner wall surface of the cap holder 26 of the pressing portion 2 is located on the outer wall portion of the base portion 3 of the switch main body portion l, and prevents displacement in the rotational direction.

In this light-emitting pushbutton switch, the LED unit 10 is provided on the base 3, so a large space can be taken on the top surface of the LED unit 10. As a result, a free lead pattern can be drawn on the top surface of the LED unit 10, and the LED
The degree of freedom in the mounting location of D can be improved, and the number of mounting points can be increased.

Then, the direct light from the LED is diffused by the diffusion plate 28, and the upper surface of the pressing part 2 is efficiently illuminated brightly, slowly, and uniformly.

To explain the switch operation of the light-emitting type push button switch, when the pressing part 2 is pressed, the click dome 8 is bent via the projection 32 of the actuating plate 31 attached at the bottom, and the contacts 5a, 5b, 5c and the other contact 6a are bent. , 6b, and 6c are electrically connected, and when the pressing operation is released, the pressing portion 2 automatically returns to its original state due to the spring action of the click dome 8, and the electrical connection is released, and the push button switch is turned on and off.

In addition, in accordance with the on/off operation of this push button switch, eight LEDs are driven by a drive circuit (not shown).
The light emission produces a luminescent effect.

Incidentally, in the pressing part 2, the actuating plate provided with the protrusion 32 was attached to the pressing part 2 as one member, but the diffusion plate 2
By forming the protrusion at the lower part of the pressing part 8, it is not necessary to provide the actuating plate 31 in the pressing part 2.

Furthermore, the light emitting mode by the LED may be turned on or off depending on whether the pressing part 2 is pressed or double-acted, and furthermore, it may be turned on by the first pressing operation of the pressing part 2 and turned off by the next pressing operation. Furthermore, it may be turned on all the time to notify the presence of the pushbutton switch, and the mode may be changed as appropriate depending on the purpose and the like.

In addition, in the embodiment described above, the LED of the LED unit IO
The LED is composed of two colors, red and green, and emits light at the same time, but it may be of other colors, or it may be configured to switch between these two colors, and even in this case, each color LED Since they are distributed and arranged in large numbers, the same effects as described above can be obtained.

[Effects of the Invention] As is clear from the above description, the light-emitting pushbutton switch according to the present invention can increase the surface area of the upper surface of the LED unit, and can freely mount a large number of LEDs on the entire surface of the LED unit. can be placed. Therefore, this light-emitting type push button has the advantage of being able to emit light with sufficient luminance and full-surface light emission.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing an embodiment of the light-emitting pushbutton switch of the present invention, Fig. 2 is a plan view of the base, and Fig. 3 is an LE
FIG. 4 is a plan view of the D unit, FIG. 4 is a sectional view of the light-emitting pushbutton switch, and FIG. 5 is a circuit configuration diagram of the LED unit. DESCRIPTION OF SYMBOLS 1...Switch body part, 2...Press part, 3...Base 4...Switch part, 10...LED unit 11
...Through hole, 32-...Protrusion Patent applicant Norimitsu Nishimura, agent/patent attorney for Nippon Denyo Co., Ltd. Figure 2, Ward 3, Toda d 33e Figure 4, Figure 5

Claims (1)

[Claims] A light-emitting pushbutton switch that operates by moving a pressing part relative to a fixed switch body, comprising: a base having a switch that performs the switch operation; and a base that is attached to the upper part of the base. an LED unit in which LEDs are arranged on the entire surface and at least one through hole is provided;
a switch body configured by a switch body; and a switch body configured to be movably provided in the switch body;
A light-emitting pushbutton switch comprising: a pressing section that penetrates a through hole of an ED unit and is provided with a projection that presses the switch section.