TWM483194U - Windshield having hidden projection screen - Google Patents

Description

Windshield with hidden projection screen

The present invention is a windshield, especially a windshield that uses an electrochromic film to produce a projection screen.

In order to obtain a wider visibility range for the driver, the existing automobile manufacturer increases the area of the front windshield and the side window glass on both sides of the automobile, and reduces the A between the front windshield and the side window glass. The column volume is so easy for the driver to watch and clearly identify the outside of the vehicle. Under the condition that the above-mentioned relatively wide visual range is obtained, the vehicle is used for displaying the speed and driving information on the dashboard or the audio screen for displaying the electronic navigation map on the center console, that is, under the driver's line of sight, To avoid obscuring the driver's view of the car when driving the vehicle. However, the above speedometer or electronic navigation map has a great image for driving safety and driving route guidance. If the driver is looking down at the speedometer or turning his head to watch and operate the electronic navigation map when driving the vehicle, it is easy to operate the vehicle by distraction. Causing an accident.

In order to solve the problem of the existing driving, looking down at the speedometer or turning the head to view the electronic navigation map, a reflective film is attached to the front windshield, and a corresponding image is projected onto the reflective film by a projector, such as a vehicle speed or an electronic navigation map. This reduces accidents caused by distracting operations while driving. However, the reflective film is liable to cause a problem of reflection and its attachment area will affect the driver's field of view.

As described in the foregoing, in order to solve the problem of the existing driving down-head watching the speedometer or turning the head to view the electronic navigation map, the reflective film is attached to the front windshield and the corresponding image is projected onto the reflective film by the projector, but the reflection is The film is easy to cause reflective problems and its attachment area still has problems affecting the driver's line of sight. Therefore, the main purpose of the novel is to provide a hidden projection screen windshield, mainly attached to the front windshield of the vehicle. Electrochromic film, when the driver needs information, turns the electrochromic film into opaque to form a projection screen for projection display information. When the driver does not need information, the electrochromic film is converted into a transparent shape. Hidden, will not cause reflection and affect the line of sight, to solve the problem that the existing windshield attached reflective film is easy to cause the reflection and attachment area to affect the driver's line of sight.

The main technical means adopted for achieving the foregoing purpose is that the windshield with the hidden projection screen comprises: a windshield; an electrochromic film attached to the windshield, the electrochromic The film has a plurality of discoloration states; and a control module electrically connected to the electrochromic film, the control module for changing a discoloration state of the electrochromic film.

The windshield with a hidden projection screen composed of the foregoing components mainly attaches the electrochromic film to the windshield of the vehicle, and the control module changes the discoloration state of the electrochromic film by energization. The discoloration state comprises a transparent or non-transparent shape, and when the electrochromic film is non-transparent, it forms a projection screen, and an external projector can project information such as a vehicle speed or an electronic navigation map, when the electrochromic film is When the transparent screen is hidden, the projection screen is hidden, and the reflection and the driver's line of sight are not reflected, and the problem that the reflection and the attachment area are likely to affect the driver's line of sight when the windshield is attached to the reflection film is solved.

For a preferred embodiment of the present invention, as shown in FIG. 1 , an electrochromic film 20 is attached to a windshield 10 , and the electrochromic film 20 is electrically connected to a control module 30 . .

The electrochromic thin film 20 is a stable and reversible color change of the optical properties (such as reflectance, transmittance, and absorptivity) of the transmissive material under the action of an electric field applied to the control module 30, and exhibits color and transparency in appearance. Reversible change. In the preferred embodiment, the electrochromic film 20 can be polyaniline, Viologen, polyoxotungstate or tungsten oxide (WO ₃ ). The electrochromic film 20 has a transparent and a non-transparent discoloration state, and does not consume electricity as long as the discoloration state is not changed, and the electrochromic film 20 can be driven at a lower voltage (2V-5V) to achieve energy saving. the goal of.

2 and 3, when the electrochromic film 20 is attached to the center of the windshield 10 of a vehicle, the color change of the electrochromic film 20 is changed by the control module 30 in a low voltage driving manner. In the state, the color change state can be selected to be transparent or non-transparent. When the electrochromic film 20 is non-transparent, it can be regarded as a projection screen, and the external vehicle 40 projects the vehicle speed as shown in FIG. 90Km/h) or the information such as the electronic navigation map shown in FIG. 4, when the electrochromic film 20 is transparent, the projection screen is hidden, and does not reflect and obscure the driver's sight, and solves the existing vehicle. When the reflective film is attached to the windshield, it is easy to cause the problem that the reflection and the attachment area affect the driver's line of sight.

For another preferred embodiment of the present invention, please refer to FIG. 4 , when the windshield 10 is installed in a side window of a vehicle or a display cabinet for use as a viewing window, the control module can be used. 30, the electrochromic film 20 is converted into a non-transparent state, and the projector 40 connected thereto is controlled by the control module 30, and the corresponding content is projected according to the scene shown in the display panel or the display cabinet, for example, the block. If the scenery outside the windshield 10 is a tree, the projector 40 projects an ecological introduction corresponding to the tree species, and if the scenery outside the windshield 10 is changed to other tree species or if an animal (such as a tiger or a lion) appears, The projector 40 then projects an ecological introduction corresponding to the tree species or animal.

10‧‧‧windshield
20‧‧‧Electrochromic film
30‧‧‧Control Module
40‧‧‧Projector

1 is a block diagram of the appearance and circuit of a preferred embodiment of the present invention. 2 is a schematic view (1) of a preferred embodiment of the present invention for use in a vehicle. 3 is a schematic view (2) of a preferred embodiment of the present invention for use on a vehicle. Figure 4 is a schematic illustration of the use of another preferred embodiment of the present invention.

10‧‧‧windshield

20‧‧‧Electrochromic film

30‧‧‧Control Module

Claims (4)

A windshield with a hidden projection screen, comprising: a windshield; an electrochromic film attached to the windshield, the electrochromic film having a plurality of discoloration states; and a control module And electrically connected to the electrochromic film, the control module is used to change the discoloration state of the electrochromic film. The windshield with a hidden projection screen as claimed in claim 1, wherein the control module is coupled to a projector for projecting an image onto the electrochromic film. The windshield with a hidden projection screen as claimed in claim 2, wherein the electrochromic film is polyaniline, viologen, polyoxotungstate or tungsten oxide (WO ₃ ). The windshield with a hidden projection screen according to any one of claims 1 to 3, wherein the electrochromic film comprises a transparent discoloration state and a non-transparent discoloration state, and the electrochromic film is in a non-transparent discoloration state. It forms a projection screen.