Lighting Apparatus Eliminating Rim Frame Glare

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Solution Overview

Problem

Conventional hollow side-lit lighting apparatuses have a non-light-emitting rim frame that reduces the usable light-emitting surface area and can cause uneven brightness and glare, limiting their decorative and functional effectiveness.

Innovation Solution

A lighting apparatus design featuring a first frame with a reflection surface and a second frame with a visor portion, where a diffuser is positioned in front of the visor portion with a distance between them, allowing light to be reflected and diffused to create a broader light-emitting surface while reducing glare and unevenness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a rim frame is used to cover light sources, then glare and brightness unevenness are reduced, but the light-emitting surface area is reduced

Engineering Contradiction:
Improveglare and brightness unevennessVSAvoidlight-emitting surface area
Core Design Contradiction:
Object-affected harmful factorsVSArea of stationary object

Solution Approach 1:

The invention extracts and removes the rim frame component from the lighting apparatus. By eliminating the rim frame that covered the light sources, the light-emitting surface area is maximized while the harmful effects of glare and brightness unevenness are addressed through alternative means (proper positioning of the diffuser relative to the light sources)

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The invention addresses the glare and brightness control issue by moving from a lateral coverage approach (rim frame) to a longitudinal positioning approach (diffuser distance from light sources). By controlling the distance between the diffuser and light sources in the depth dimension, the patent achieves uniform light distribution without sacrificing surface area

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Object-affected harmful factors

If light sources are disposed to be covered by a frame, then indirect light is produced to reduce glare, but the decorative effectiveness is reduced due to narrower light-emitting surface

Engineering Contradiction:
ImproveglareVSAvoiddecorative effectiveness
Core Design Contradiction:
Object-affected harmful factorsVSAdaptability or versatility

Solution Approach 1:

The rim frame is extracted and removed from the design. Instead of using a frame to cover light sources laterally, the patent achieves glare reduction through proper diffuser positioning, thereby maximizing the light-emitting surface for decorative purposes

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent changes the critical parameter from lateral frame coverage to longitudinal diffuser positioning. By optimizing the distance between the diffuser and light sources, the system achieves both glare reduction and maximum decorative effectiveness through full surface utilization

Inventive Principle:
Principle #35Parameter changes

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 design enhances the light-emitting surface area, reduces glare and brightness unevenness, and eliminates the need for a rim frame, resulting in a more aesthetically pleasing and effective lighting solution.

Implementation Method 1

a first frame (14) having a first reflection surface (14b) disposed inside the arrangement of the light sources (12), the first reflection surface (14b) reflecting, in a forward direction, light emitted from the light sources (12)

Methodology Applied
Scientific EffectReflection: Reflection

Implementation Method 2

a diffuser (18) disposed in front of a front surface (17a) of the visor portion (17) with a distance (D) left between the diffuser (18) and at least a part of the front surface (17a)

Methodology Applied
Scientific EffectDiffusion: Diffusion

Data Source

PatentUS9739447B2Lighting apparatus
Publication Date: 2017.08.22 MINEBEAMITSUMI INC
  • US9739447B2 patent drawing
  • US9739447B2 patent drawing
  • US9739447B2 patent drawing

AI summary

A lighting apparatus includes: a plurality of light sources; a first frame including a first reflection surface disposed inside of the light sources, the first reflection surface reflecting, in a forward direction, light emitted from the light sources; a second frame including a visor portion covering fronts of the light sources; and a diffuser disposed in front of a front surface of the visor portion with a distance left between the diffuser and at least a part of the front surface of the visor portion.