Duplex-screen vehicle-mounted backlight source and vehicle-mounted display device capable of preventing abnormal sound caused by loosening of diaphragm
By setting positioning blocks on the bottom plate and setting positioning holes on the optical diaphragm, both sides of the optical diaphragm are fixed, which solves the problem that large-size dual-screen vehicle-mounted backlight optical diaphragm is not easy to fix and loosen and warp, and improves product quality and production efficiency.
CN222838532UActive Publication Date: 2025-05-06HUIZHOU HANDAMEI ELECTRONICS CO LTD
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Patent Information
- Application Number
- CN202421661307.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-12
AI Technical Summary
Technical Problem
The optical diaphragm of the large-size dual-screen vehicle-mounted backlight is not easy to fix, and is prone to loosening and warping, which affects product quality and safety.
Method used
By providing a first positioning block, a second positioning block and a third positioning block on the bottom plate, and corresponding positioning holes are provided on the optical diaphragm, the two sides of the optical diaphragm are fixed by using the cooperation of these blocks and holes to prevent them from moving up and down or moving left and right.
Benefits of technology
It effectively prevents the loosening and warping of the optical diaphragm, and improves the quality and production efficiency of the dual-screen vehicle-mounted backlight source.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN222838532U_ABST
Abstract
The duplex-screen vehicle-mounted backlight capable of preventing the diaphragm from loosening and abnormal sound comprises a lower frame, a reflecting film, a light guide plate and an optical diaphragm, the reflecting film is arranged in the lower frame, the light guide plate is arranged on the reflecting film, and a bottom plate of the lower frame comprises a first long edge and a second long edge which are oppositely arranged. The bottom plate is fixedly connected with a first positioning block, a second positioning block and a third positioning block, the first positioning block and the second positioning block are arranged on the side, close to the first long edge, of the bottom plate, the third positioning block is arranged on the side, close to the second long edge, of the bottom plate, and the optical film is provided with a first positioning hole, a second positioning hole and a third positioning hole. When the optical film is arranged on the light guide plate, the first positioning block is arranged in the first positioning hole, the second positioning block is arranged in the second positioning hole, and the third positioning block is arranged in the third positioning hole. According to the duplex-screen vehicle-mounted backlight source capable of preventing the diaphragm from loosening and abnormal sound, the phenomenon that the diaphragm is loosened and warped can be avoided. The utility model further relates to a vehicle-mounted display device.
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