Vehicle Notification Device Windshield Mounting Light Diffusion
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Solution Overview
Problem
Conventional notification devices mounted in vehicle headlight or front grill parts face challenges with visibility and waterproofing, as they are exposed to wind and rain at a relatively low position, necessitating complex waterproofing measures and compromising visibility.
Innovation Solution
A notification device that emits light in a linear shape along the upper edge of a windshield, using spot-shaped light sources, a reflecting part, and an outer lens with a fine concave-convex face to enhance visibility and simplify waterproofing, with the housing securely fixed to the roof and windshield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the notification device is disposed in a headlight part or front grill part, then the device can be mounted on the vehicle, but the visibility for a person outside the vehicle is compromised and waterproofing measures are required
Solution Approach 1:
The notification device transitions from being mounted at the front end (horizontal dimension) to being mounted at the upper part of the windshield (vertical dimension). This dimensional change places the device in a higher position that is naturally protected from wind and rain while simultaneously improving visibility for persons outside the vehicle, as the light emits upward and outward through the windshield.
2Device complexity
If spot-shaped light sources are used, then the device structure is simplified, but the light diffusion is insufficient
Solution Approach 1:
A diffusing member is introduced as an intermediary component between the spot-shaped light sources and the external environment. This diffusing member receives the concentrated light from the simple spot-shaped sources and scatters it in multiple directions, achieving sufficient light diffusion without complicating the overall device structure. The diffusing member acts as a mediator that transforms point光源 into area光源.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides excellent visibility for a person outside the vehicle while eliminating the need for special waterproofing measures, ensuring stable support and effective light diffusion for enhanced notification, even with small spot-shaped light sources, resulting in a simplified and effective notification system.
Implementation Method 1
the outer lens having on at least one of a front face and a rear face thereof a fine concave-convex face that diffuses the light transmitted through the outer lens
Implementation Method 2
a reflecting part reflecting light from the light sources to the front
Data Source
AI summary
A notification device in a vehicle enables a person outside the vehicle to be notified of a predetermined operating state of the vehicle by the light emission, and includes: a plurality of spot-shaped light sources arranged at intervals to follow an upper edge of a windshield; a reflecting part reflecting light from the light sources to a front; an outer lens transmitting therethrough the light heading toward the front from the reflecting part; and a housing. The outer lens has on at least one of front and rear faces thereof a fine concave-convex face diffusing the light transmitted through the outer lens. Accordingly, the device is visible through an upper part of the windshield from a person outside the vehicle so that visibility is very good, and the light from the relatively small spot-shaped light source can be sufficiently diffused so that visibility can be further enhanced.