JPH0443403Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention relates to an in-vehicle speaker device, and more particularly, to an in-vehicle speaker device that is illuminated in multiple colors and is controlled in conjunction with an automobile brake light.

[Conventional technology]

Most in-vehicle audio devices are installed in passenger cars, and their speaker devices are installed on the rear panel of the passenger car. Many vehicles have an illumination function by attaching a panel on the back of the vehicle speaker device equipped with the brand, model number, etc., with letters and diagrams printed on it, and shining light from a light source onto this panel. It's starting to become easier. This illumination is very popular because it looks beautiful when it is dark, and has become established as a feature of high-end car-mounted speaker devices. On the other hand, in recent years, the illumination of in-vehicle speaker devices has become more than just a design function.
Applied to the function of displaying the operation (movement) of passenger cars,
There is a tendency to increase added value. For example, an in-vehicle speaker device is provided with a lamp linked to a brake light, and the lamp is turned on in response to a brake operation, thereby providing a function to prevent a rear-end collision with a following vehicle.

[Problem that the invention attempts to solve]

A major problem with passenger cars is the so-called battery build-up, and in order to prevent this from happening, it is necessary to install a voltmeter in the driver's seat.
It was difficult to install a new voltmeter due to lack of space.

[Means to solve the problem]

Therefore, this idea was developed by arranging light sources of two or more colors to illuminate the illumination panel, and by illuminating the illumination panel with different display colors, it is possible to display multiple functions, and also to display the functions of the battery checker of the car. For this purpose, the system includes a speaker unit attached to a speaker box, a light source attached inside the speaker box to illuminate the illumination panel, and a switching circuit for controlling lighting of the light source. , the light source irradiates the illumination panel with a plurality of colors of irradiation light, and is selectively controlled to be turned on by the switching circuit, and when a power supply voltage below a certain value is detected, the light source irradiates the illumination panel with a specific color; It is characterized in that it is configured to turn on a light source.

【Example】

Embodiments of this invention will be described below with reference to the attached drawings. FIG. 1 is a diagram showing the main part configuration of a vehicle-mounted speaker device according to this invention. In the figure, reference numeral 10 is a speaker box in which a speaker unit (not shown) driven by an audio signal is built-in. An illumination panel 20 is attached to the back surface thereof. The illumination panel 20 is made of synthetic resin such as acrylic that allows light to pass through.
Letters such as B and C are printed on it. Furthermore, a plurality of light sources for irradiating light onto the illumination panel 20 are installed inside the speaker box 10, and are arranged to face the illumination panel 20 so as to irradiate light of a plurality of colors. This light source is further controlled to turn on by a switching circuit 30, and this switching circuit 30 has an input terminal +B to which power (battery) for driving the light source is supplied.
and an input terminal to which control signals are input in conjunction with the lighting of the automobile's small lamps and brake lamps.
SM and BK are connected. The small lamp control signal operates an illumination function, and the brake lamp control signal operates an operation (operation) display function. Further, a power supply (battery) power supply detection circuit 31 is connected to the switching circuit 30 so that a control signal is sent between the lines to which the brake lamp control signal is input when the power supply voltage drops below a certain level. It's summery. In the above embodiment, the light emitted from the light source has two colors, "blue" and "red", and the lighting is selectively controlled by the small lamp control signal and the brake lamp control signal input to the switching circuit 30. be done. FIG. 2 is a diagram showing a specific configuration of the switching circuit 30. In the figure, reference numeral 40 indicates a first light source that emits blue light, and reference numeral 50 indicates a second light source that emits red light. . A plurality of these first light sources 40 and a plurality of second light sources 50 are each connected in parallel. In FIG. 2, when a small lamp control signal is input to the terminal SM due to the lighting operation of the small lamp, a voltage is applied to the base of the transistor Tr1 via the diode D.
Transistor Tr1 and transistor Tr2 are turned on, and the power supply voltage from power input terminal +B is the first
The light source 40 is turned on to irradiate the illumination panel 20 with blue irradiation light. If the brake lamp lights up due to brake operation in this state, the input terminal
A brake control signal is input to BK, and while the brake control signal is being input, transistor Tr3 is turned on, transistors Tr1 and Tr2 are turned off, the first light source 40 is turned off, and the second light source 50 is turned on. , the illumination light of the illumination panel 20 is made red. When the brake control signal disappears, when the small switch is turned off while the first light source 40 is turned on by the small lamp control signal, the control signal disappears. The transistor Tr1 continues to be on for a certain period of time (off timer time) determined by the time constants of the capacitor C and the resistor R, and the first light source 40 continues to be lit for this off timer time, and then turns off. Further, when the power supply voltage detection circuit 31 detects a decrease in the power supply voltage, a control signal is applied to the transistor Tr3 to turn on the transistor Tr3 and control the lighting of the second light source 50 during the above-mentioned off timer period. Therefore, when the second light source 50 emitting red light is turned on, a checker can be displayed to indicate that the battery voltage has decreased. The above-mentioned time chart is shown in FIG. Note that the first light source 40 and the second light source 50 whose lighting is controlled by the switching circuit 30 described above are configured to be turned on selectively, but the illumination color that illuminates the illumination panel 20 is the first light source. a light source 40,
Or the illumination color of the second light source 50 and the first light source 4
0, and a mixed color by lighting the second light source 50 at the same time. Furthermore, although the switching circuit 30 is configured outside the speaker box 10, the switching circuit 30 may be configured to be built into the speaker box 10. Furthermore, the first light source 4 lights continuously for the off timer period in conjunction with the off operation of the small switch.
0 can also be the second light source 50.

[Effect of the idea]

As is clear from the above explanation, according to the in-vehicle speaker device of this invention, multiple color light sources are arranged to selectively illuminate the illumination panel provided in the speaker box, thereby achieving the original illumination. Since the present invention is configured to perform the function of turning on and displaying the operation of the battery checker, new added value can be obtained in a vehicle-mounted speaker device equipped with illumination.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the configuration of an in-vehicle speaker device according to this invention, Fig. 2 is a diagram showing a specific configuration of a switching circuit used in this invention, and Fig. 3 is a diagram showing the operation of the switching circuit shown in Fig. 2. It is a figure which shows the time chart which shows. DESCRIPTION OF SYMBOLS 10... Speaker box, 20... Illumination panel, 30... Switching circuit, 31... Power supply voltage detection circuit, 40... First light source, 50... Second light source.

Claims (1)

[Claims for Utility Model Registration] A speaker unit attached to a speaker box, a light source attached inside the speaker box to illuminate an illumination panel, and a switching circuit for controlling lighting of the light source, the light source The illumination panel is irradiated with light of a plurality of colors, and the lighting is selectively controlled by the switching circuit, and when a power supply voltage below a certain value is detected, the light source that irradiates a specific color is turned on. An in-vehicle speaker device characterized in that it is configured as follows.