JPH04101580U - Vehicle display device - Google Patents

Abstract

(57) [Summary] [Purpose] The object of the present invention is to provide a display device for a vehicle that has good visibility regardless of day or night, and does not obstruct the forward view due to illumination light at night. [Structure] A display for displaying vehicle driving information is composed of a transmissive liquid crystal display 3. The arrangement of the display 3 is configured to be switchable between a first position and a second position. The first position is a position where the external view within one surface of the windshield and the display image on the display 3 overlap within the driver's visual field. Second
This position is a position where the front side of the dashboard 4 has an opening 8 facing the driver and a backlight 9 is attached to the rear, and is a position where the display 3 can be lowered from the first position.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention uses transparent liquid to display operating information such as speed and engine speed. A vehicle table consisting of a crystal display whose position can be changed as necessary. Related to display devices.

0002

[Conventional technology]

Conventionally, a head-up display device was used to display the vehicle's speed displayed on the display. In order to improve the visibility of driving information such as engine speed and engine speed, There is one that is made to be visible by superimposing it on the outside scene in front of the window glass. for example, Install a display device such as a liquid crystal or fluorescent display tube on the dashboard in front of the windshield. Driving information can be displayed by placing a display on top of the vehicle or by placing a display inside the dashboard. The light from the displayed image is reflected on the windshield surface to reach the driver's viewpoint and display the outside scenery. There are some that are visible by superimposing them.

0003

[Problem that the idea aims to solve]

This type of vehicle display device provides high visibility during the daytime. However, problems may arise at night because the outside scenery becomes dark. In other words, at night Because the outside scene is dark, the display image of a self-emitting or illuminated display may be superimposed on this outside scene. If you do so, the displayed image will stand out in the dark, and the masking phenomenon will obstruct forward visibility. This will result in a loss. Also, if the display unit is installed on the dashboard, The light from the indicator reflects off the windshield, side windows, etc., further impairing the driver's forward vision. It may also hinder.

0004 This invention has good visibility both during the day and night, and at night, the front visibility is improved by illumination light. The purpose is to provide a display device for a vehicle that does not interfere with the vehicle.

[0005]

[Means to solve the problem] This invention is a vehicle display device in which the display unit that displays vehicle driving information is a liquid crystal display. In the device, the liquid crystal display is configured as a transmission type, and the arrangement of the liquid crystal display is controlled by the driver. The first position overlaps with the outside view on the windshield surface within the field of view, and the inside of the dashboard 2nd place with an opening at the front facing the driver and a backlight installed at the back. It is characterized by being configured so that it can be switched between the two positions.

[0006]

[Effect]

Based on the above configuration, when the display is in the first position, the display's surface as seen from the driver is The image appears superimposed on the external scenery seen through the windshield. At this time, the display shows No lighting. Also, when the display is in the second position, the display image on the display is illuminated from behind by the backlight inside the dashboard without being superimposed on the outside scene. It is displayed brightly. The illumination light in this case is the opening of the dashboard towards the driver. Since the light travels toward the mouth, there is no reflection of light from the windshield or side window glass. do not have.

[0007]

【Example】

Embodiments of the present invention will be described below based on the drawings.

[0008] 1 and 2 are examples of a vehicle display device according to the present invention, which displays driving information. This figure shows a state in which the indicator is in the first position. 1 is the windshield, 2 is It is a dashboard, and the top surface of the dashboard 2 has a plan that allows the display device 3 to pass through. An inner hole 2a is provided. In addition, the display unit 3 can be slid up and down. , a substantially vertical U-shaped cross section from the lower left and right sides of the guide hole 2a to the lower surface of the dashboard 2. Shape guide rails 4, 4 are attached.

[0009] In addition, the display 3 provides driving information such as vehicle speed, engine rotation speed, fuel level gauge, etc. It is for displaying information, and is composed of a transmissive liquid crystal display 3 having a substantially rectangular shape. Therefore, as shown in Figure 2, the displayed image is colored and the rest are colored. The outside part appears transparent. In addition, at the lower right of the liquid crystal display 3, there is a display as shown in FIG. An arm-shaped display holder 3a is attached as shown in FIG. -3a has a hole in the center and a female thread.

0010 On the other hand, as shown in FIG. 2, a bracket 13 is installed on the bottom surface of the dashboard 2. A motor 5 is attached to the rotary shaft of the motor 5, and a male screw is bored in the rotating shaft of the motor 5. A rod 6 is attached. The rod 6 passes through the bottom surface of the dashboard 2. and engages with the hole provided in the display device holder 3a of the display device 3, and the screw groove and thread are in mesh, and when the motor 5 rotates forward, the display 3 is sandwiched between the guide rails 4, 4. When it moves up to the first position, which is above the top surface of the dashboard 2, and reverses, , as shown in FIG. It's starting to rain.

[0011] Note that the display device 3 and the drive circuit that drives the display device 3 are made of a flexible board (not shown). It is connected by a board, and the signal for displaying information regardless of the change in the position of the display 3. is input.

0012 Further, the dashboard 2 has a trapezoidal shape when viewed from the front, and the guide rails 4, The left and right outer sides of 4 are shielded by shielding plates 7, 7, so the inside cannot be seen, and the guide rails 4, 4 has an opening 8 inside, and when the display 3 comes to that position, the second The location is now visible. In addition, the guide rail with the opening 8 As shown in FIG. 1 and a backlight 9 consisting of a diffuser plate 12 for making the brightness of the light source 11 uniform. As will be described later, when the indicator 3 descends to this position, it will light up. The display device 3 is illuminated from behind.

[0013] A motor 5 for raising and lowering the display 3 and a light source 11 for the backlight 9. The drive circuit is configured as shown in FIG.

[0014] That is, when the driver turns off the light switch 15 of the headlight, etc., the CP A signal is sent from U to the motor drive circuit 19 and the light source lighting circuit 18, and the motor 5 is activated in advance. Rotate by the set number of revolutions. This allows it to be attached to the rotating shaft of motor 5. The rod 6 rotates and pushes up the display holder 3a that is engaged with it. to send the display 3 to the first position above the dashboard 2 and turn on the light. Turn off the power source 11.

[0015] For this reason, during the day, the display 3 is located on the dashboard 2 to display vehicle speed and engine speed. Driving information such as engine speed can be seen superimposed on the outside scenery, so visibility speed can be increased. can be done.

[0016] Conversely, when the light switch 15 is turned on, the mode is activated by a signal from the CPU. The indicator 5 is reversed and the indicator 3 is lowered to the second position below the dashboard 2. At the same time, the light source 11 is turned on to illuminate the display 3 from behind.

[0017] In this way, at night, the illuminated display 3 changes to the dashboard. There is no masking phenomenon in the front view due to the display light because it is not above the front door 2. Because there is no window reflection due to light reflection, visibility in the front field is good.

[0018] The above operations were performed by turning the light switch 15 on and off, but the manual It can also be operated by the switch 16. In this case, manual switch 1 When the switch 6 is turned on, the display 3 moves down and the light source 11 lights up. At this time, it is light sui. The switch 15 is not activated. Also, based on the signal from the vehicle speed sensor 14, automatically raises and lowers the display 3 based on the vehicle speed data entered in advance. It is also possible to make it work. Switch-based and automatic switching The changeover is performed by a changeover switch 17.

[0019] In this way, the position of the display 3 can be changed with other than the light switch 15. The reason for this is that when driving at high speeds, the driver's line of sight is far away, so the indicator 3 is It is easier to see if it is located above the dashboard 2, but it is not necessary at low speeds. This is done in consideration of the fact that it may actually obstruct the view.

[0020]

[Effect of the idea]

As explained above, according to the present invention, the display device of the vehicle display device can be positioned conveniently. Since it is possible to switch according to can be superimposed on the external scenery in front of the vehicle, thereby increasing the visibility of driving information. . Also, if the display is set to the second position at night, the illumination light will only travel in the direction of the driver. This allows you to see outside without being obstructed by the lighting reflected on the windshield. The visibility of the scenery is also improved.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of a vehicle display device according to an embodiment of the present invention.
FIG. 3 is a diagram with the display in a first position;

FIG. 2 is a front view of the vehicle display device of FIG. 1.

FIG. 3 is a side sectional view of a vehicle display device according to an embodiment of the present invention;
FIG. 6 is a diagram with the display in a second position;

FIG. 4 is a block diagram of a drive circuit of a vehicle display device.

[Explanation of symbols]

1 Windshield 2 Dashboard 3 Display (liquid crystal display) 9 Backlight

Claims (1)

[Scope of utility model registration request] Claim 1: A vehicle display device in which a display for displaying vehicle driving information is a liquid crystal display, wherein the liquid crystal display is a transmission type, and the liquid crystal display is arranged within the field of view of the driver. It is characterized by being configured to be switchable between a first position where it overlaps with the external view inside the windshield and a second position where the front side opens toward the driver inside the dashboard and a backlight is attached to the back. Vehicle display device.