Handbag Lighting Device with Curved Diffusers for Glare-Free Light
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Solution Overview
Problem
Existing handbag lights emit light that causes glare and inadequate illumination due to vertical orientation, are easily confused with other objects, and fail to maintain reliable illumination during motion or when obstructed.
Innovation Solution
A lighting device with a rotationally symmetrical housing body featuring convexly curved translucent end surfaces, ensuring optimal, glare-free illumination by aligning parallel to the container base, and incorporating LEDs for bidirectional lighting with controllable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the housing has a flat geometry with vertically oriented LEDs, then the device is simple to manufacture and has a compact shape, but the light causes strong glare and provides inadequate illumination of the interior
Solution Approach 1:
The housing is designed with a rotationally symmetrical shape featuring convexly curved end face regions instead of flat surfaces. This curvature causes the housing to automatically align horizontally on the container base, directing light laterally along the interior rather than vertically toward the user's eyes, thereby eliminating glare while maintaining illumination intensity
Solution Approach 2:
The patent changes the geometric parameters of the housing from a flat geometry to a rotationally symmetrical shape with specific curvature radii (R1 and R2). This parameter change transforms the light emission pattern from vertical to lateral, improving illumination quality without causing glare
2Reliability
If the housing is rotated 180° or moves during vibration, then the device adapts to different positions, but the illumination becomes unreliable and light intensity decreases
Solution Approach 1:
The rotationally symmetrical housing with convexly curved end faces creates an unstable equilibrium when positioned vertically, causing the device to automatically return to its preferred horizontal orientation. This ensures reliable lateral illumination regardless of vibrations or movements, maintaining consistent light intensity along the interior
Solution Approach 2:
The housing geometry itself provides the alignment function through its curvature, eliminating the need for external alignment mechanisms. The device self-corrects its orientation automatically based on gravitational force acting on its symmetrical shape, ensuring reliable illumination without additional components
3Illumination intensity
If objects inside the handbag cover the luminous parts of the housing, then the device remains compact, but the desired illumination of the interior is prevented
Solution Approach 1:
The rotationally symmetrical housing with curved surfaces allows light to be emitted from multiple angles around the perimeter. This multi-directional light emission ensures that even if objects partially obscure some areas, the interior remains adequately illuminated from other angles, maintaining illumination consistency
Solution Approach 2:
The patent transitions from single-direction vertical light emission to multi-directional lateral emission by orienting LEDs along the curved end faces. This dimensional change in light emission pattern provides redundancy, ensuring illumination coverage even when partially obstructed
4Shape
If the housing shape is similar to other objects like charging boxes, then the device is compact and simple, but it is easily confused with other objects by touch
Solution Approach 1:
While the overall housing is rotationally symmetrical, the specific configuration of convexly curved end faces with distinct curvature radii creates a unique tactile profile. This asymmetric arrangement of curved surfaces within the symmetrical form provides distinctive touch characteristics that differentiate it from conventional rectangular charging boxes
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
Ensures reliable, glare-free, and efficient illumination of the handbag interior, distinguishable by touch, and maintains alignment during motion or obstruction, with reduced power consumption and easy replacement of components.
Implementation Method 1
The convexly curved front surface preferably also functions as a diffuser, scattering the light into multiple areas of the interior, thus ensuring optimal glare-free illumination.
Implementation Method 2
The translucency of the front surface is preferably achieved by allowing light to pass through it, yet exerting a scattering effect on the light to minimize any potential glare to the user.
Data Source
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AI summary
The invention relates to a lighting device (10), in particular for illuminating the interior of a handbag, comprising a housing body (11), at least one electrically operable lighting means (12) arranged in the housing body (11), a voltage source configured to operate the lighting means (12), a control unit which is designed and configured to temporarily electrically connect the lighting means (12) to the voltage source in an event-controlled manner, and is characterized in that the housing body (11) comprises a lateral surface (M) which is rotationally symmetrical with respect to a rotation axis (R), wherein the lateral surface (M) is designed to transition into at least one convexly curved translucent end face region (13, 14).