JPS61153688A - Onboard display unit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a mobile display device, particularly a vehicle-mounted display device.

It is known that information is provided by displaying characters and images on a display screen formed by arranging a large number of light emitting elements in the form of an IJ rack. The present invention relates to an improvement of a vehicle-mounted display device that is transported to a place where many people gather, and then displayed on the vehicle and provides video information to the crowd.

[Conventional technology]

In such a vehicle-mounted display device, two display boards containing a display unit made up of a large number of light emitting elements are placed side by side on the vehicle chassis (see Figure 4 I), and when transported to the destination, they are placed on the vehicle chassis. Then, one display board (upper display board) is rotated upside down on top of the other display board (lower display board) (see Figure 4 ■), and used as a two-tiered large screen (see Figure 1 ■ ). The upper display board and the lower display board are connected by a hinge, and the upper display board is designed to be rotated upside down on top of the lower display board by a lifting mechanism including a hydraulic cylinder (see FIG. 3).

[Problem that the invention seeks to solve]

In conventional vehicle-mounted display devices, the two display boards are stacked in two layers on the vehicle chassis, and a wiring duct is placed along the bottom, and the power supply and control equipment on both sides of the display board are connected through this wiring duct. Wiring was then carried out from there to the light emitting elements of the display unit. However, with this configuration, when the two display boards are placed side by side on the chassis and are not in use, the wiring duct along the bottom of the lower display board extends close to the chassis, but the upper display board rotates and comes down. The wiring duct that runs along the bottom of the car is close to the top of the lower display board and extends high above the chassis. For this reason, vibrations during driving tend to apply force to the electric wires and cables in the wiring duct of the upper display board, causing problems such as disconnection of connectors, etc., and the center of gravity of the upper display board is lower than the center of gravity of the lower display board. This increases the height of the display panels, and the misalignment of the centers of gravity of the display panels also creates an inconvenience in that an undesirable unbalanced force is applied to members such as hinges when the display panels are running.

[Means and operations for solving the problems] An object of the present invention is to solve the above-mentioned problems of the conventional vehicle-mounted display device and to provide a vehicle-mounted display device that eliminates obstacles that occur during driving.

According to the present invention, the upper display board is provided with a wiring duct along the top surface when stacked upside down, the lower display board is provided with a wiring duct along the bottom surface, and the power supply placed on the side of each display board is installed. This is accomplished by wiring from the control device to the display unit through the wiring duct.

This avoids a situation where the wires and connectors of one wiring duct are subjected to strong force due to vibration, and also eliminates the shift in the center of gravity of the display board due to the imbalance in the height of the wiring duct, eliminating the inconvenience caused by this. be done.

〔Example〕

Figure 1.2 shows an embodiment of the invention. That is, the first
The figure is a schematic view of the vehicle-mounted display device when the display board is in use, as seen from the rear of the vehicle; It is a perspective schematic diagram of the upper and lower display boards in bl.

In FIG. 1.2, a lower display board 3 and an upper display board 4 including a display unit 7°8 consisting of a large number of light emitting elements 6 are mounted on the chassis 2 of a vehicle 10. The upper stage display boards 4 are arranged upside down and stacked in two stages. In this state, both the upper and lower display boards form one large screen, and images are displayed on this large screen by the light emitting elements 6. Outriggers 19 are used to keep the vehicle 1 stationary during use.

According to the present invention, the upper display board 4 includes a wiring duct 15 along the top surface when inverted, and the lower display board 3 includes a wiring duct 16 along the bottom surface, and power and control devices are arranged on both sides of each display board. Wiring is conducted from the device 17.18 to the light emitting element 6 of the display unit 7.8 through the wiring duct 15.16.

FIG. 3 shows a lifting mechanism for inverting the upper display board 4 onto the lower display board during use. In FIG. 3, the lifting mechanism includes a pivoting rod 10 rotatably mounted on the base 9, a hydraulic cylinder 13 and an extension rod 14, also rotatably mounted at its free end, and A push-up rod 11 is provided near the center of the rod 10 so as to be rotatable at 12. The end of the extension rod 14 is rotatably fixed to the side surface of the upper display panel 4. To stack the upper display board 4 on the lower display board 3, the pusher rod 11 pushes up and rotates the rotating rod 10 while rotating the upper display board 4 around the hinge 5 to position 4a shown by the dashed line. , 4b, and when it reaches position 4b, the hydraulic cylinder 13 and the extension rod 14 are extended to stack the upper display board 4 on the lower display board 3 (see the dashed line 4C).

Figure 4 shows the arrangement of the in-vehicle display device during driving (Figure 4 I),
In use, the upper display board 4 is rotated around the hinge 50 in order to be stacked on the lower display board 3 (Fig. 4 II), and the upper display board 4 is stacked on the lower display board 3. Figure 4 ■).

〔Effect of the invention〕

As is clear from the above description, with the configuration of the present invention, the wiring for both the image display board and the display board are located at the bottom of the display board when the vehicle is running, which eliminates the influence of vibration on the wiring, and also makes the weight balance even and the center of gravity. lowering, thereby increasing the angle of recovery and increasing stability.

[Brief explanation of the drawing]

Fig. 1 is a rear view of the embodiment of the present invention in use, Fig. 2 is a side view in use, Fig. 3 is a schematic diagram of the lifting mechanism, and Fig. 4 is an explanation of the in-vehicle display device when it is running and in use. It is a diagram.

Claims (1)

[Scope of Claims] An upper display board including a display unit made up of a large number of light emitting elements, a lower display board including a display unit including a large number of light emitting elements, and a lower display board and an upper display when not in use. Place the boards side by side,
A hinge connects the lower display board and the upper display board so that when in use, the upper display board is inverted over the lower display board to form a two-tier stack, and when in use, the upper display board is inverted over the lower display board. In the vehicle-mounted display device equipped with a lifting mechanism, the upper display board includes a wiring duct along the top surface when inverted, the lower display board includes a wiring duct along the bottom surface, and the side surface of each display board includes a wiring duct along the bottom surface. An on-vehicle display device characterized in that wiring is connected from a power source and a control device located in the vehicle to the display unit through the wiring duct.