JPS6238825Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a so-called automobile display device that is combined with a microcomputer, etc. and visually displays various vehicle information on a display screen such as a CRT. A shading device for an automobile display device that automatically covers the area around the display screen with a shading hood when the sunroof is opened to prevent the visibility of the screen from decreasing due to the influence of external light entering through the sunroof. The purpose is to provide.

Recently, a display device for an automobile that visually displays various vehicle information on a display screen by being combined with a microcomputer or the like has been proposed, and is about to be put into practical use. Among these display devices, for self-luminous display devices using CRT, LED, FLT, etc., the darker the area around the display screen, the better the visibility of the screen, and conversely, the brighter the area around the screen, the lack of contrast. The disadvantage is that the display becomes extremely difficult to see. Particularly, in the case of an automobile equipped with a sunroof on the ceiling of the vehicle interior, the above-mentioned drawback becomes even more noticeable since outside light enters when the sunroof is opened.

The present invention solves the above-mentioned drawbacks of automobiles equipped with a sunroof by adopting the structure described in the claims of the utility model registration. Automatically covers the area around the screen,
A light shielding device for an automobile display device is provided which prevents the visibility of the screen from being degraded due to external light entering through the sunroof.

Hereinafter, the configuration of the present invention will be explained with reference to the drawings.

As shown in FIG. 1, the automobile display device 1 is assembled to the instrument panel 2 part of the driver's seat, etc., and the inside of the display hood 3 is shown in FIGS. 2 and 3. As shown, a light-shielding hood 6 that is located above a display screen 5 such as a CRT 4 and can be protruded and retracted is incorporated. At the rear end of this light shielding hood 6, for example, as shown in FIG. 4, a rack 7 and a pinion 8 are provided.
is attached, and by rotating the motor 9 in both forward and reverse directions by an electric circuit to be described later,
Connect the light shielding hood 6 to the display hood 3 in Figure 2.
It is configured so that it can freely protrude from the inside to the light-shielding position shown in FIG. 3 and can be freely stored inside the display hood 3.

FIG. 5 shows an electric circuit for controlling the protruding and retracting operations of the light shielding hood 6. In the figure, 10
11 is an ignition switch, 11 is a sunroof switch that is connected to the sunroof installed on the ceiling of the vehicle compartment and is turned on when the sunroof is opened. 12 is a sunroof switch that is turned on when ignition switch 10 and sunroof switch 11 are turned on. It is a relay coil that is energized. Relay contacts 13 and 14 of this relay coil 12 are connected to both the left and right terminals of the motor 9, and by switching the direction of motor current, the rotational direction of the motor 9, that is, the protruding and retracting operations of the light-shielding hood 6 are automatically controlled. configured to control. Reference numerals 15 and 16 indicate position detection limit switches for detecting the storage position and the light-shielding position of the light-shielding hood 6, and as illustrated in FIG. Correspondingly arranged projections 17 at the rear end of the rack 7
When presses each limit switch 15, 16
It is configured to be turned off. 18 is a danger prevention buzzer that notifies the protrusion of the light shielding hood 6;
19 is a power source such as a battery, and 20 is a fuse.

In the above configuration, when the sunroof on the ceiling of the vehicle compartment is not opened, the sunroof switch 11 is
It is OFF and the ignition switch 1
Relay coil 12 regardless of whether 0 is ON or OFF.
No current flows through. Therefore, the motor 9 does not rotate, and the light-shielding hood 6 is held in the storage position shown in FIG. 2.

Now, when the ignition switch 10 is turned on, that is, when the car is in use, the sunroof on the ceiling of the passenger compartment is opened and the sunroof switch 11 is turned on.
When turned ON, a current flows through the relay coil 12, and the relay contacts 13 and 14 are switched from the solid line position to the dotted line position in FIG. As a result, the motor 9
A current flows through the power supply 19, the fuse 20, the limit switch 15, the relay contact 13, the motor 9, and the relay contact 14.
By the actions of the motor 9, rack, and pinions 7 and 8 shown in the figure, it is pushed out from the storage position shown in FIG. 2 toward the light-blocking position shown in FIG. 3. It should be noted that during this protruding operation of the light-shielding hood 6, the buzzer 18 for danger prevention continues to sound, notifying the occupant that the light-shielding hood 6 is about to protrude. Then, when the light-shielding hood 6 is extended to a predetermined light-shielding position,
As is clear from Fig. 4, the limit switch 15
is turned off, and the rotation of the motor 9 is automatically stopped. As a result, the light-shielding hood 6 protrudes from the inside of the display hood 3 in the form of a canopy, as shown in FIG. 3, and shields the area around the display screen 5 of the display device 1 from external light. To prevent visibility of a display screen 5 from deteriorating even when the interior of a vehicle becomes bright.

When the ignition switch 10 is turned OFF or the sunroof is closed and the sunroof switch 11 is turned OFF with the light shielding hood 6 protruding as shown in FIG. 3, the current in the relay coil 12 is turned OFF and the corresponding Relay contacts 13 and 14 are switched from the dotted line position in FIG. 5 to the solid line position. Further, as described above, when the light shielding hood 6 is protruded, the limit switch 15 is OFF and the limit switch 16 is ON. Therefore, the motor 9 has
Power supply 19, fuse 20, limit switch 1
6, relay contact 14, motor 9, relay contact 13
A current flows in the opposite direction to that during the ejection operation, and the motor 9 is automatically reversed. As a result, the light-shielding hood 6 is automatically returned from the protruding state shown in FIG. 3 to the stored state shown in FIG. 2, and is automatically stopped when the limit switch 16 is turned OFF at the predetermined stored position. This ends the storage operation.

6 and 7 show another embodiment of the device of the present invention, in which the light-shielding hood 6 is configured to be automatically projected by the spring force of a spring 21, and is rotated by a solenoid 22. Hook 2
3 is engaged with a protrusion 24 provided on the side edge of the light-shielding hood 6, and the light-shielding hood 6 is stored in the storage position with the spring 21 contracted.

Now, with the ignition switch 10 turned on, when the sunroof is opened and the sunroof switch 11 is turned on, current flows through the timer 25 to the relay coil 26 for a predetermined period of time, and the relay contact 27 is turned on, causing the solenoid to close. 22 operates for a predetermined period of time. Solenoid 22
When activated, the hook 23 is rotated counterclockwise by the plunger 28 of the solenoid 22, and the engagement between the hook 23 and the protrusion 24 is released. As a result,
The light shielding hood 6 is pushed out by the spring force of the compressed spring 21, and is set from the stored state shown in FIG. 2 to the extended state shown in FIG. 3. The embodiment shown in FIGS. 6 and 7 is configured so that only the protruding operation of the light-shielding hood 6 is performed automatically, and in order to return the light-shielding hood 6 to the storage position shown in FIG. The light-shielding hood 6 may be pushed into the display hood 3 against the spring force to engage the hook 23 and the protrusion 24.

Since the present invention has the configuration and operation as explained above, when the sunroof of a car is opened, the area around the display screen of a self-luminous display device using CRT, LED, FLT, etc. is shielded from light. The hood can automatically cover and block light.
Even when outside light shines through the sunroof and brightens the vehicle interior, the area around the display screen can be kept dark by blocking light, reducing the visibility of the display screen due to lack of contrast when the sunroof is open. This has the remarkable effect of preventing the decline.

[Brief explanation of the drawing]

FIG. 1 is a schematic external view of an automobile display device equipped with a light shielding device according to the present invention, and FIG.
FIG. 3 is a schematic cross-sectional view of the light-shielding hood part in the figure, FIG. 3 is a schematic cross-sectional view of the light-shielding hood part in the protruding state, FIG. Figure 5 is an electric circuit diagram for controlling the protrusion and retraction of the shading hood, Figure 6 is a schematic structural diagram of another embodiment of the drive mechanism portion of the shading hood, and Figure 7 is the shading hood shown in Figure 6. FIG. 3 is an electric circuit diagram for controlling the protrusion of the hood. DESCRIPTION OF SYMBOLS 1... Automotive display device, 2... Instrument panel, 3... Display hood, 5... Display screen, 6... Light shielding hood, 7, 8... Rack and pinion, 9... Motor, 11... ...Sunroof switch, 12...Relay coil, 13, 14...Relay coil contact, 2
1...Spring, 22...Solenoid, 23...
...Hook, 24...Protrusion, 25...Timer, 2
6...Relay, 27...Relay coil.

Claims (1)

[Scope of utility model registration request] A protruding and retractable light-shielding hood that protrudes like a canopy around the display screen of the display device in a vehicle equipped with an openable sunroof and a self-luminous display device made of a CRT or the like. and a hood protrusion control mechanism that automatically protrudes the light shielding hood from the storage position to the light shielding position when the sunroof switch detects the open or closed state of the sunroof. A shading device for a display device for an automobile, characterized by comprising: