JPH06247230A - Car on-board electronic apparatus - Google Patents

Abstract

PURPOSE:To provide a car on-board electronic appliance which assures fine appearance for the body panel when the operation panel is removed and which allows reducing the costs for the panel-associated matters. CONSTITUTION:A removable operation panel 6 is mounted on the body panel 1a of an acoustic appliance. The pushing part 2c of the working part 2 of switch and a photo-conducting plate 3 are exposed at a plurality of holes provided in the body panel 1a. When an operation key 7 is pushed, a protrusion 7a pushes the pushing part 2c, which causes deflection of a small wall thickness part 2b to result in movement toward a printed circuit board 4, and an electric conductive part 2d is put in pressure contact with the electric conductive pattern 4a on the printed circuit board 4 to generate turning-on. The light from a lamp 5 is led to the operation key 7 by photo-conductive plates 3, 9, and the key 7 is irradiated. When the key 7 is released, the key and the pushing part 2c are returned to their original positions by the resilient force of the small wall thickness part 2b and a cushion 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle electronic device, and more particularly to an on-vehicle electronic device having a detachable operation panel at a low cost.

[0002]

2. Description of the Related Art Conventionally, an on-vehicle audio device has a removable operation panel, and when the vehicle gets off, the operation panel is removed to prevent the remaining audio device body from operating, thereby preventing theft.

FIG. 6 shows a cross-sectional view of a conventional vehicle-mounted audio equipment to which an operation panel is attachable / detachable as seen from above. In the figure,
A printed circuit board is arranged inside the main body panel 21a of the main body 21 of the audio device, and the plurality of tact switches 23 and terminals 24 mounted on the printed circuit board 22 are exposed in the holes 21b of the main body panel 21a.

On the operation panel 25 which is detachably attached to the main body panel 21a, an operation key 26 is arranged at a position facing the tact switch 23 of the main body panel 21a, and is urged by a cushion 27 from the inside to the outside. Was there.

A display unit (not shown) and a printed circuit board 28 are provided on the operation panel 25, and a plurality of lamps 29 and terminals 30 are mounted on the printed circuit board 28 so as to be in pressure contact with the terminals 24. Further, the light guide plate 31 is adhesively fixed so that the light of each lamp 29 is guided to the protruding portion 26a of each operation key 26 to illuminate the operation key.

[0006]

However, the above-described conventional vehicle-mounted audio equipment has the following drawbacks. (1) A printed circuit board, a lamp, and a terminal are built in the operation panel, and the number of parts is large and the cost is high. (2) Since there are many parts to be installed in the operation panel, the thickness of the operation panel is large and the appearance is poor. (3) Since the terminals are exposed when the operation panel is removed, the contact state between the terminal on the main body side and the terminal on the operation panel tends to be unstable, and contact failure is likely to occur. (4) When the operation panel was removed and the main body of the audio device was viewed from the front, the tact switch and the terminal were visible from the hole, and the appearance was not good.

The present invention has been made in view of the above points, and an object thereof is to solve the drawbacks of the conventional example, to make the appearance of the main body panel beautiful when the operation panel is removed, and There is an in-vehicle electronic device that can reduce costs.

[0008]

According to another aspect of the present invention, there is provided a vehicle-mounted electronic device in which an operation panel having an operation key is attachable to and detachable from a main body panel. A switch that short-circuits the pattern is provided in the main body panel, a part of the switch is exposed from the main body panel, and the exposed portion of this switch is pressed by the operation key of the operation panel. Is.

Further, in the on-vehicle electronic device, an illumination lamp is arranged on the printed circuit board, the light guide plate provided on the operation panel is illuminated, and the operation key is illuminated.

Further, in the on-vehicle electronic device, the surface of the main body panel where the switch and the illumination lamp are exposed is covered with a light transmitting member having elasticity.

[0011]

According to the present invention, a switch is provided in the main body panel such that the operating portion formed of the elastic material short-circuits the pattern on the printed circuit board, and a part of the switch is exposed from the main body panel. Since the exposed portion of the switch is configured to be pressed by the operation key of the operation panel, the exposed portion of the switch is pressed by the operation key to turn on the switch. Moreover, when the operation panel is removed, only the exposed portion of the switch can be seen from the main body panel.

Further, since the illumination lamp is arranged on the printed circuit board to illuminate the light guide plate provided on the operation panel, each operation key is illuminated by the light guided by the light guide plate.

Further, since the surface of the main body panel where the switch and the illuminating lamp are exposed is covered with the elastic light transmitting member, when the operation key is pressed, the exposed portion of the switch is pressed through the light transmitting member, and the switch Turns on. Further, the light of the lamp is transmitted through the translucent member and is incident on the light guide plate of the operation panel, and the operation keys are illuminated as described above. Even if the operation panel is removed, the switch and the illumination lamp on the body panel side are hidden by the translucent member and cannot be seen.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of an on-vehicle electronic device according to the present invention will be described with reference to FIGS.

This embodiment is an embodiment of an on-vehicle audio equipment which is one of on-vehicle electronic equipment.

FIG. 1 is a plan view showing a state in which a detachable operation panel according to the first embodiment of the present invention is mounted. FIG. 2 is a front view showing a state in which the operation panel is removed in the first embodiment of the present invention. FIG. 3 is a sectional view of the A-ASEC seen from above in the first embodiment. FIG. 4 is a front view showing a state in which the operation panel is removed in the second embodiment of the present invention. FIG. 5 is a sectional view of the A-ASEC seen from above in the second embodiment.

In the first embodiment shown in FIGS. 1 to 3,
Reference numeral 1 is a main body of an on-vehicle audio device. Reference numeral 1a is a main body panel provided in the main body, and a hole 1c for a pressing portion 2c of the switch and a light guide plate 4 are provided in the concave portion 1b at a position facing the operation key 7.
A hole 1d for display and a display portion 1e are provided. 1f is a hole for inserting a cassette tape.

Reference numeral 2 denotes an actuating portion constituting a switch, which is formed of a thermoplastic elastomer material such as rubber or resin, and has a base 2a, a skirt-shaped thin portion 2b, a cylindrical pressing portion 2c exposed on the main body panel and a rear surface side. The conductive portion 2d at the tip of the projecting portion is integrally formed, is a member that turns on the circuit by coming into contact with a print pattern to be described later, is molded, and is sandwiched between the printed board 4 and the light guide plate 3.

Reference numeral 3 denotes a light guide plate, which is formed so as to surround the lamp 5 and is fixed to the back surface of the main body panel 1a by adhesive so as to guide the light of the lamp 5 to the operation panel 6 side.

Reference numeral 4 denotes a printed circuit board, which is a main body panel 1a.
A pair of conductive patterns 4a having a switch function is formed at a position opposed to the conductive portion 2d of the integrally formed switch 2 by being attached with a screw 10 inside, and four lamps 5 for illuminating the operation keys 7 are provided. It is mounted.

Reference numeral 6 denotes an operation panel which can be attached to and detached from the concave portion 1b of the main body panel 1a to prevent the audio equipment from being stolen. Six operation keys 7 made of a light-transmissive material are provided on the surface of the operation panel. In addition, a display window made of a translucent material (not shown) is provided. A projecting portion 7a is provided on the back surface of the operation key 7 and is exposed at the back surface hole of the operation panel 6. Also,
Inside the operation panel 6, there are arranged a flat cushion 8 for pressing and pushing the operation key 7 toward the front side, and a light guide plate 9 for guiding light from the light guide plate 3 of the main body panel 1a to the operation key 7. .

The operation and action of the first embodiment constructed as above will be described. When the operation panel 6 is removed from the main body panel 1a, as shown in FIG. 2, a switch is formed from the display portion 1e of the recess 1b, the cassette tape hole 1f, and the holes 1c and 1d provided on the right side. Working part 2
Only the pressing portion 2c and the light guide plate 3 can be seen.

When the operation panel 6 is attached to the main body panel 1a, the state shown in FIG.
The light from is guided by the light guide plate 3 and enters the light guide plate 9 of the operation panel 6 through the two holes 1d, and the six operation keys 7
The operation keys 7 are illuminated by being guided to the projecting portion 7a of.

When the operation key 7 is pressed, the protruding portion 7a presses the pressing portion 2c of the operating portion 2. As a result, the pressing portion 2
In c, the thin portion 2b bends to give a click feeling, and the thin portion 2b moves to the printed circuit board 4 side to move the conductive portion 2d and the printed circuit board 4 to each other.
The conductive pattern 4a is pressed and turned on, and a predetermined signal is output to a control unit (not shown).

When the operation key 7 is released, the operation key 7 is returned to its original position by the elastic force of the cushion 8, and the pressing portion 2c of the operating portion 2 is also returned to its original position by the elastic force of the skirt thin portion 2b. Therefore, the conductive portion 2d and the conductive pattern 4a are separated and turned off.

In the second embodiment shown in FIGS. 4 and 5, 11 is a sheet which is a light-transmitting member having elasticity,
It is clouded or has a predetermined color and is adhered to the surface of the main body panel 1a to hide the holes 1c and 1d.

In the main body panel 1a, a printed circuit board 4 having a switch operating portion 2 and a lamp 5 and a conductive pattern 4a is arranged in the same manner as in the first embodiment, but the light guide plate 3 is not provided. The light of the lamp has a structure that directly illuminates the back surface of the sheet 11.

The operation panel 6 is constructed in exactly the same way as in the first embodiment.

The operation and action of the second embodiment constructed as above will be described. When the operation panel 6 is removed from the main body panel 1a, as shown in FIG.
The holes 1c and 1d on the right side are covered with the sheet 11, and the pressing portion 2c of the operating portion 2 is hidden and invisible.

When the operation panel 6 is attached to the main body panel 1a, the state shown in FIG.
The light from the sheet passes through the sheet 11 and enters the light guide plate 9 provided on the operation panel 6 through the two holes 1d, is guided to the six operation keys 7, and illuminates each operation key 7. .

When the operation key 7 is pressed, the protruding portion 7a presses the pressing portion 2c of the operating portion 2 which constitutes a switch via the sheet 11. As a result, the pressing portion 2c becomes the thin portion 2b.
Bends to give a click feeling, moves to the printed circuit board 4 side, the conductive portion 2d and the conductive pattern 4a of the printed circuit board 4 are pressed into contact with each other, and are turned on, and a predetermined signal is output to a control unit (not shown).

When the operation key 7 is released, the operation key 7 and the operating portion 2c are returned to their original positions, and the conductive portion 2d and the conductive pattern 4a are separated and turned off, as in the first embodiment.

In the second embodiment, when the lamp 5 and the operating portion 2c can be seen through the sheet 11, this sheet 11 is used.
It is also possible to perform light-transmissive color printing on the lamp 5 to make the lamp 5 and the like invisible.

Further, although the present embodiment is an application example of the co-acoustic equipment of the first and second embodiments, the present invention is not limited to this.
The present invention can be applied to communication devices for vehicles and other electronic devices.

[0035]

According to the on-vehicle electronic device of the present invention, the following effects can be obtained. (1) Since the tact switch and terminals in the main body and the printed circuit board and terminals in the operation panel can be deleted, the cost can be significantly reduced. (2) Since the lamp and the printed circuit board, which are built in the operation panel, are eliminated, the operation panel can be made thin and easy to carry, and the appearance when removed is improved. (3) Since the exposed terminals are eliminated, the pressure contact connection of the terminals is eliminated, and the illumination failure of the operation key due to the contact failure is eliminated, and the quality is improved. (4) When getting off the vehicle and removing the operation panel to prevent theft, only the pressing part of the operating part and the light guide plate that constitute the switch can be seen from the hole on the right side of the main body panel, so the appearance from the front becomes beautiful. Further, in the case where the sheet is arranged on the main body panel, only this sheet can be seen and the appearance is further beautiful, and the intrusion of dust and the like can be prevented.

[Brief description of drawings]

FIG. 1 is a plan view showing a first embodiment of the present invention.

FIG. 2 is a front view showing a state in which an operation panel is removed in the first embodiment of the present invention.

FIG. 3 is a sectional view of the first embodiment of the present invention viewed from above.

FIG. 4 is a front view showing a state in which an operation panel is removed in the second embodiment of the present invention.

FIG. 5 is a sectional view of the second embodiment of the present invention viewed from above.

FIG. 6 is a sectional view showing a conventional example as seen from above.

[Explanation of symbols]

 1: Main body (audio equipment) 1a: Main body panel 1b: Recesses 1c, 1d, 1f: Hole 1e: Display part 2: Switch operating part 2a: Base 2b: Thin part 2c: Pressing part 2d: Conducting part 3, 9: Light guide plate 4: Printed circuit board 4a: Conductive pattern 5: Lamp 6: Operation panel 7: Operation key 7a: Protruding part 8: Cushion 11: Seat (translucent member)

Claims (3)

[Claims] 1. In a vehicle-mounted electronic device in which an operation panel having operation keys is attachable to and detachable from a main body panel, a switch is provided in the main body panel such that an operating portion formed of an elastic material short-circuits a pattern on a printed circuit board. An in-vehicle electronic device, wherein the electronic device is provided, and a part of the switch is exposed from a main body panel, and an exposed portion of the switch is pressed by an operation key of the operation panel. 2. An illumination lamp is arranged on the printed circuit board to illuminate a light guide plate provided on an operation panel, and the operation keys are illuminated.
In-vehicle electronic device described. 3. The in-vehicle electronic device according to claim 1, wherein the switch and the illuminating lamp are covered with a surface of the main body panel covered with a light transmitting member having elasticity.