JPH0634345B2 - Automotive electronics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to an improvement of in-vehicle electronic equipment.

[Prior Art] Conventionally, in an in-vehicle audio device, an automatic light amount control system (or an auto dimmer system, hereinafter AD) that automatically adjusts escutcheon illumination by an optical sensor.
S) is adopted. The ADS is provided with a light-transmissive window for an optical sensor at the escutcheon, and a light-receiving element for detecting the ambient brightness is provided inside the light-transmissive window. With this light receiving element, the ADS adjusts the illumination of the light emitting display unit according to the ambient brightness. The light emitting display unit adjusted by such an ADS is provided with a sufficient distance from the light receiving element so that the light does not reach the light receiving element of the ADS. There is something. That is, cassette tape running direction indicator and FF / RE
There is a W indicator or a function selection indicator, and recently, in response to the demand for multi-functionalization, graphic equalizers and spectrum analyzers are also available.
It is installed as a light emitting display.

By the way, in recent years, there are many cases where the on-vehicle audio equipment is stolen. Therefore, an on-vehicle audio equipment provided with an anti-theft system (or anti-shift system, ATS) has been proposed.

The ATS is a system in which each in-vehicle audio device has a unique code and the audio device does not operate unless the code is keyed in. Generally, the audio equipment in which this ATS is installed is provided with an indicator on the escutcheon in order to appeal that fact.
This indicator turns off the key of the vehicle, AC
If you turn off the C power and only supply the backup power,
The light turns on, indicating that the audio device cannot be used even if the audio device is stolen by unauthorized means. Further, the lighting of such an indicator is stopped by turning the key of the vehicle again to the ACC power source.

By the way, in the in-vehicle electronic equipment represented by the in-vehicle audio equipment, the size standard is unified, and the electronic equipment must be installed in an extremely narrow space. Therefore, the area of the escutcheon is very limited as compared with the home equipment. On the other hand, the recent multi-functionalization of in-vehicle electronic devices has prompted a narrow escutcheon to arrange various switches and indicators. Therefore, in the light receiving element of ADS,
The switches and indicators that emit light may come close to each other, and the light receiving element of the ADS may receive a light from the switches and cause a malfunction. Moreover, it was not preferable in terms of design.

[Problems to be Solved by the Invention] As described above, in the conventional technology, since the escutcheon is small, the number of installed indicators and the like is limited,
It was difficult to install a system that requires an indicator in an electronic device.

The vehicle-mounted electronic device of the present invention has been proposed to solve such a problem, and an object thereof is to provide an excellent vehicle-mounted electronic device that effectively uses limited escutcheon. .

[Means for Solving the Problems] In order to solve the above-described problems, the vehicle-mounted electronic device according to the present invention has the brightness of the light emitting element section according to the ambient brightness in a state where the device is operating. Equipped with an automatic light amount control system to adjust the light, a part of the automatic light amount control system and a translucent window provided on the escutcheon In addition, it is structurally characterized in that it has a light receiving element which is provided in the optical element installation portion and detects light from the outside, and a light emitting element which is provided in the optical element installation portion and is turned on when the device is inactive.

[Operation] The operation of the present invention having the above configuration is as follows.

That is, the light emitting element that is provided in the optical element installation portion of the ADS and is turned on when the device is inoperative is turned off when the device is operating, and the two do not give optical noise to the light emitting element of the ADS, and the two do not interact. Can coexist without interfering with. Therefore, it is possible to use one transparent window on the escutcheon as well. In other words, one indicator with two functions can be formed on the escutcheon,
As the number of functions increases, so does the design.

[Embodiment] An embodiment of the present invention as described above will be specifically described with reference to the drawings.

That is, in the present embodiment, it is used for the light emitting element ATS that lights up when the audio device is not operating. As shown in FIG. 1, a front window escutcheon 1 is provided with a light-transmissive window 2 and an optical element installation portion 3 is formed therein, and the left and right walls are partitioned by a wall 1a. A transparent member 4 is provided in the optical element installation portion 3.
Is installed. As shown in FIG. 2, the translucent member 4 has a cylindrical translucent protrusion 5 that fits into the translucent window 2 near one edge of the upper plate 6a of the T-shaped portion 6. There is. Further, the upper plate portion 6a of the T-shaped portion 6 is formed into a tapered surface 7a so as to laterally reflect the light entering from the translucent projection portion 5, and the facing surfaces are also tapered surfaces 7b inclined at the same angle. Has become. That is, the upper plate portion 6a is formed of a rectangular parallelepiped whose surfaces are parallelograms. Further, the foot portion 6b of the T-shaped portion 6 is fixed on the printed circuit board 8 provided in the vicinity of the back surface of the front escutcheon.

In addition, the optical element installation portion 3 is provided with an ATS indicator 9 below the translucent projection portion 5 and an ADS optical sensor 10 on the opposite side, with the foot portion 6b of the T-shaped portion 6 being the only part. Are fixed to the printed circuit board 8 and are electrically connected to control circuits (not shown) for the ATS and ADS, respectively.

In the present embodiment having the above-described configuration, as shown in FIG. 3 (A), when the acoustic device is in operation, the ambient light 1 causes the light-transmissive protrusion 5 located in the light-transmissive window 2. Received from
The tapered surface 7a laterally reflects the upper plate portion 6a of the T-shaped portion 6 to hit the tapered surface 7b, where it is reflected and reaches the ADS optical sensor 10. And ADS optical sensor 1
0 detects the ambient brightness and transmits the illumination information required for ADS via the control circuit. At this time, the ATS indicator 9 does not operate and the ADS optical sensor 10
There is no fear of giving light intensity to.

On the other hand, when the audio device is not operating, the ADS does not need to operate as shown in FIG. 3 (B), and only the ATS operates. At this time, the ATS indicator 9 lights up,
This light 1 can be clearly seen through the translucent protrusion 5 located in the translucent window 2.

Since only the translucent window 2 is formed on the front escutcheon 1 of this embodiment, the area occupied by the front surface is small, the design is beautiful, and the number of members can be reduced, which is economical.

[Effects of the Invention] As described above, according to the vehicle-mounted electronic device of the present invention,
One light-transmitting window is provided, and an optical installation formed so as to be able to collect light from the light-transmitting window is provided, and an ADS light-receiving element is provided therein.
It is possible to provide an excellent vehicle-mounted electronic device that has a simple configuration in which light-receiving elements such as ATS are installed at the same time, has multiple functions by effectively utilizing a narrow escutcheon, has a small number of members, and has a high designability.

[Brief description of drawings]

FIG. 1 is a cross-sectional plan view of a main part of this embodiment, FIG. 2 is a perspective view of a translucent member of this embodiment, and FIGS. A sectional view and FIG. 4 are front views showing the present embodiment. 1 ... front escutcheon, 2 ... translucent window, 3 ... optical element installation part, 4 ... translucent member, 5 ... translucent protrusion, 6 ...
... T-shaped part, 7 ... tapered surface, 8 ... printed circuit board, 9
... ATS indicator, 10 ... ADS optical sensor,
l ... light.

Claims (1)

[Claims] 1. A transparent window provided on an escutcheon, and a rear side of the escutcheon, which is provided with an automatic light amount control system for adjusting the brightness of a light emitting display section according to the brightness of the surroundings while the device is operating. In the optical element installation section, an optical element installation section that is formed to be able to illuminate through a transparent window, a light receiving element that forms a part of the automatic light amount control system and is installed in the optical element installation section, and that detects external light A vehicle-mounted electronic device, comprising: a light-emitting element that is provided in the device and that lights up when the device is inactive.