Light Guide Toy Structure for Battery-Free Light Emission

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Solution Overview

Problem

Existing lighting toys that rely on battery power face issues such as light emission failure due to battery exhaustion and the associated costs and labor for battery replacement.

Innovation Solution

A lighting toy design that utilizes a light guide body with a light collecting portion, reflection portion, and lighting portion to harness external light sources, eliminating the need for battery power.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a battery-powered light source is used in the lighting toy, then the toy can emit light independently, but the light source may fail due to battery exhaustion and requires replacement incurring cost and labor

Engineering Contradiction:
Improvelight emission reliabilityVSAvoidbattery replacement complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts the battery component from the lighting toy system, replacing it with an external light guide body that channels light from outside sources. This removes the battery-related reliability issues and replacement complexity while maintaining the light emission function.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces a light guide body as an intermediary component between external light sources and the toy's lighting portions. This mediator channels and directs light without requiring internal power generation, eliminating battery dependency while preserving illumination functionality.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Duration of action of moving object

If a battery-powered light source is used in the lighting toy, then the toy can provide continuous illumination, but ongoing maintenance costs and labor for battery replacement are required

Engineering Contradiction:
Improveillumination durationVSAvoidbattery replacement time
Core Design Contradiction:
Duration of action of moving objectVSLoss of time

Solution Approach 1:

By removing the battery system entirely and replacing it with passive light guiding components, the patent eliminates the need for periodic battery replacements. The illumination duration becomes limited only by the availability of external light sources rather than battery capacity.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The lighting toy becomes self-sufficient by using externally available light sources (such as ambient room lighting or sunlight) without requiring internal power storage. The system automatically utilizes available light without manual intervention for battery changes.

Inventive Principle:
Principle #25Self-service

3Illumination intensity

If a light guide body with reflection portion is used, then light can be effectively directed to the lighting portion, but the device structure becomes more complex

Engineering Contradiction:
Improvelighting portion brightnessVSAvoidlight guide body structure
Core Design Contradiction:
Illumination intensityVSDevice complexity

Solution Approach 1:

The patent merges the light guide body, reflection portion, and lighting portions into an integrated structure. The reflection portion is incorporated as an integral component of the light guide body, simplifying manufacturing and assembly while maintaining effective light direction and illumination intensity.

Inventive Principle:
Principle #5Merging (Combining)

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 ensures consistent light emission without battery failure, reducing maintenance costs and labor, and enhancing the brightness and visibility of the lighting effect.

Implementation Method 1

a reflection portion configured to reflect the light incident on the light collecting portion to change a traveling direction of the light to a predetermined direction

Methodology Applied
Scientific EffectReflection: Reflection

Data Source

PatentEP4678258A1Lighting toy
Publication Date: 2026.01.14 EPOCH COMPANY LTD
  • EP4678258A1 patent drawingFigure 1
  • EP4678258A1 patent drawingFigure 2
  • EP4678258A1 patent drawingFigure 3

AI summary

The lighting toy includes a light guide body configured to guide light from an outside. The light guide body includes: a light collecting portion configured to collect the light; a reflection portion configured to reflect the light incident on the light collecting portion to change a traveling direction of the light to a predetermined direction; and a lighting portion to which the light reflected by the reflection portion reaches.