Vehicular Lamp Lighting Device with Non-Air-Gap Lens
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Solution Overview
Problem
Existing lighting devices for vehicular lamps face challenges in achieving uniform light distribution and satisfying North American AMECA standards due to limitations in design and configuration, particularly in mounting and slimness, while maintaining light efficiency.
Innovation Solution
A lighting device design featuring a non-air-gap structure with a lens member between the shielding module and the light guide member, where the light emitting direction of the light source module forms an inclination angle with the light emitting surface, enhancing light efficiency and uniformity by eliminating hot spots and allowing for a slim, versatile design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a surface light source is mounted on various places such as a vehicular lamp, then the lighting device can be applied to multiple locations, but designing for mounting is not easy and it is difficult to satisfy North American AMECA standards
Solution Approach 1:
The lighting device is designed with a universal mounting structure that can be adapted to various vehicular lamp locations. The shielding module with integrated mounting features and the flexible positioning of the light source module enable the same device to be installed in different locations (headlights, fog lights, taillights, etc.) without requiring location-specific redesign, thus achieving multi-functionality and ease of mounting across diverse applications
2Ease of manufacture
If lights are provided with a certain standard and configuration, then manufacturing is simplified, but it is difficult to implement the lights slimly while securing desired uniformity of lights at a limited place
Solution Approach 1:
The patent merges the light source module, light guide member, and shielding module into a highly integrated compact structure. The light source module is positioned in close proximity to the light guide member with minimal separation, and the shielding module integrates multiple functions (light shielding, structural support, and mounting) into a single component. This merging enables the device to achieve slim thickness while maintaining standardized manufacturing processes for each integrated component
3Ease of manufacture
If a separation portion exists between components, then assembly is easier, but light efficiency is reduced and hot spot phenomenon occurs
Solution Approach 1:
The patent extracts and eliminates the air gap (separation portion) between the light source module and the light guide member by using a refractive index matching layer or direct contact interface. This removal of the separation portion prevents total internal reflection at the interface, eliminates hot spot phenomena, and maximizes light coupling efficiency. The shielding module is also designed to directly contact or closely approach the light guide member, extracting unnecessary separation and improving optical efficiency while maintaining assembly feasibility through precise positioning features
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 improves light efficiency and uniformity, enables compliance with North American standards, and allows for a slim, versatile design of vehicular lamps by removing the separation between components and forming an inclination angle between the light emitting direction and surface, resulting in increased brightness and adaptability.
Implementation Method 1
a light guide member disposed inside the shielding module and being in contact with a light emitting surface of the light source module
Implementation Method 2
a light beam emitted through a first light guide member may be emitted as an indirect light beam
Implementation Method 3
a lens member between a shielding module and a light guide member
Data Source
AI summary
The present disclosure relates to a lighting device and a vehicular lamp including the same. A lens member is provided between a shielding module and a light guide member. Through a non-air-gap structure in which a separation portion between components is removed, diversity of mechanism designs may be secured, and at the same time, light efficiency may be improved. A light emitting direction of a light emitting element forms an inclination angle with a light emitting surface of a light source module, so that a deterioration phenomenon of a light guide member formed of resin may be removed, and a light beam emitted through a first light guide member is emitted as an indirect light beam.