JP7156202B2 - vehicle display - Google Patents

Description

The present invention relates to a vehicle display device.

A display device for a vehicle disclosed in Patent Document 1 is provided with a display unit for displaying images such as advertisements as an exterior of the vehicle. For example, an LED display may be used as such a display unit. An LED display is provided with a substrate extending transversely to the horizontal direction and a number of LEDs (Light Emitting Diodes) spaced apart from each other and mounted on the substrate. In the LED display, images such as still images and moving images are displayed by controlling the light emission of a large number of LEDs attached to the substrate.

In an LED display, it is conceivable to provide a privacy filter having a large number of horizontally extending eaves parallel to each other so as to cover the surface of the substrate on the LED side. If this privacy filter is provided, the incidence of sunlight directed toward the substrate, etc., is suppressed by the many eaves, and the sunlight hits the substrate, etc. and is reflected, making it difficult to see the light emitted from the LED from the outside. can be suppressed. As a result, it is possible to prevent the image displayed on the LED display from being difficult to see due to the above-described reflection of sunlight on the substrate or the like through the light emission of the numerous LEDs attached to the substrate.

Japanese Patent No. 6477856

By the way, when the sun is at a relatively high position, such as during the daytime, the sunlight is incident on the substrate side at a certain angle of inclination with respect to the eaves of the privacy filter. You will be able to However, when the sun is at a relatively low position, such as in the morning or in the evening, the incident sunlight toward the substrate side is nearly parallel to the eaves of the privacy filter. As a result, it becomes easier for sunlight to pass between the eaves of the privacy filter, and the sunlight that passes between the eaves is reflected by the substrate, etc., making it difficult to see the emitted light from the outside. There is

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle display device that can prevent an image displayed on a display unit from becoming difficult to see from the outside in the early morning or evening.

Means for solving the above problems and their effects will be described below.
A display device for a vehicle that solves the above problems is provided with a display unit for displaying an image as an exterior of the vehicle. The display section includes a substrate extending in a direction intersecting the horizontal direction and having a large number of LEDs mounted thereon at intervals; and a privacy filter having a number of horizontally extending eaves. A red absorption layer that absorbs a light beam having a wavelength corresponding to red is formed between the LED-side surface of the substrate in the display section and the privacy filter.

When the sun is relatively low, such as in the morning or in the evening, the sunlight has a wavelength corresponding to red. According to the above configuration, the sunlight that has passed between the eaves of the privacy filter, that is, light with a wavelength corresponding to red, is absorbed by the red absorption layer formed between the LED-side surface of the substrate and the privacy filter. be absorbed. Therefore, it is suppressed that the light emitted from the LED attached to the substrate becomes difficult to see from the outside due to the sunlight being reflected by the substrate or the like.

ADVANTAGE OF THE INVENTION According to this invention, it can suppress that the image|video displayed on a display part in early morning or evening becomes difficult to see from the outside.

FIG. 2 is a side view showing a vehicle to which the display device is applied; Sectional drawing which shows the LED display of the same apparatus. The schematic diagram which shows the incident aspect of sunlight in the daytime. The schematic diagram which shows the incident aspect of the sunlight in the morning or the evening.

An embodiment of a vehicle display device will be described below with reference to FIGS. 1 to 4. FIG.
FIG. 1 shows a state in which the vehicle is viewed from the side in the width direction. As can be seen from FIG. 1, the vehicle display device includes an LED display 1 provided as an exterior of the vehicle on a side surface in the width direction of the vehicle. The LED display 1 functions as a display section for displaying images such as advertisements.

FIG. 2 shows the LED display 1 viewed from the direction of arrow AA in FIG. As can be seen from FIG. 2, the LED display 1 is provided with a substrate 2 extending transversely to the horizontal and a number of LEDs 3 spaced apart from each other and mounted on the substrate 2 . It is A wiring pattern made of a conductor is formed on the substrate 2 for conducting electricity to each LED 3 . The LED display 1 displays images such as still images and moving images by controlling the light emission of a large number of LEDs 3 attached to the substrate 2 .

In the LED display 1, a red absorption layer 4 that absorbs light with a wavelength corresponding to red is formed on the surface of the substrate 2 on the side of the LEDs 3 and between the LEDs 3. As shown in FIG. The red absorbing layer 4 is made of a resin mixed with a pigment that absorbs light with a wavelength corresponding to red.

Also, the LED display 1 is provided with a privacy filter 5 so as to cover each LED 3 and the red absorption layer 4 . The privacy filter 5 has a thin-film attachment portion 5a attached to each of the LEDs 3 and the red absorption layer 4, and a horizontal wall extending parallel to each other while protruding from the attachment portion 5a to the opposite side of the substrate 2. It has a large number of eaves 5b extending in the direction. The LED display 1 is provided with a transparent layer 6 made of a transparent material so as to cover the portion of the privacy filter 5 on the eaves 5b side.

Next, the operation of the vehicle display device according to the present embodiment will be described.
As shown in FIG. 3, when the sun is at a relatively high position such as during the daytime, the incidence of sunlight directed toward the substrate 2 side is affected by the eaves 5b of the privacy filter 5 to some extent as indicated by the arrows in FIG. It is done with an angle of inclination. Therefore, the eaves portion 5b can block the incidence of sunlight directed toward the substrate 2 side. As a result, since sunlight can be prevented from entering toward the substrate 2 and the like by the many eaves portions 5b, the sunlight hits the substrate 2 and is reflected, making it difficult to see the light emitted from the LED 3 from the outside. things become suppressed.

On the other hand, as shown in FIG. 4, when the sun is relatively low in the morning or in the evening, the sunlight has a wavelength corresponding to red. When the sun is at a relatively low position, the incident sunlight toward the substrate 2 is nearly parallel to the eaves 5b of the privacy filter 5 as indicated by the arrow in FIG. Therefore, sunlight can easily pass between the eaves 5b of the privacy filter 5, and if the sunlight passing between the eaves 5b is reflected by the substrate 2 or the like, the reflection of the sunlight will As a result, the light emission of the LED 3 becomes difficult to see from the outside.

However, in the display device of this embodiment, the sunlight that has passed between the eaves 5b of the privacy filter 5, that is, a light ray of a wavelength corresponding to red, is projected between the surface of the substrate 2 on the LED 3 side and the privacy filter 5. It is absorbed by the red absorbing layer 4 formed therebetween. Therefore, it is suppressed that the light emitted from the LEDs 3 attached to the substrate 2 becomes difficult to see from the outside due to the sunlight being reflected by the substrate 2 or the like.

According to this embodiment detailed above, the following effects can be obtained.
Whether it is before noon when the sun is high or in the morning or evening when the sun is low, the image displayed on the LED display 1 through the light emission of the many LEDs 3 attached to the substrate 2 is the above-described sunlight substrate. It is possible to suppress the difficulty of visibility due to the reflection at 2nd class.

It should be noted that the above embodiment can be modified, for example, as follows.
- The mounting position of the LED display 1 is not limited to the side surface in the width direction of the vehicle, and may be the front end surface or the rear end surface of the vehicle.

DESCRIPTION OF SYMBOLS 1... LED display, 2... Substrate, 3... LED, 4... Red absorption layer, 5... Privacy filter, 5a... Sticking part, 5b... Canopy part, 6... Transparent layer.

Claims (1)

A display unit for displaying images is provided as an exterior of the vehicle, and the display unit includes a substrate extending in a direction intersecting the horizontal direction and having a large number of LEDs mounted thereon at intervals; A vehicle display device provided with a privacy filter covering the surface of the substrate on the LED side and having a large number of eaves extending in the horizontal direction so as to be parallel to each other,
A portion between the LEDs of the substrate in the display section is formed of a resin mixed with a pigment that absorbs light of a wavelength corresponding to red, and absorbs light of a wavelength corresponding to red contained in sunlight. A display device for a vehicle, characterized in that a red absorbing layer is formed on the display device.

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