Projection Device Reflective Medium Rotation Wear Reduction

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Solution Overview

Problem

Existing ambient projection lights cause visual fatigue due to limited lighting effects and have drive components that are prone to wear and tear, leading to a short service life.

Innovation Solution

A projection device with a first light-emitting assembly including incoherent light sources, a reflective medium, a condenser lens, and a driving gear system that allows for dynamic movement, ensuring the light source remains fixed and compact, reducing wear and enhancing lighting effects.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If drive components are used to drive the movement of the light source, then lighting effects are produced, but the light source circuit board becomes loose and prone to wear, reducing service life

Engineering Contradiction:

Improvelighting effectsVSAvoidservice life

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

Instead of moving the light source to create dynamic lighting effects, the patent inverts the approach by keeping the light source fixed and moving the reflective medium (mirror) to achieve the same visual effect. The drive component now drives the mirror rather than the light source, which resolves the reliability issue while maintaining lighting effect versatility.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent introduces a reflective medium (mirror) as an intermediary between the fixed light source and the projection surface. By moving this intermediary element rather than the light source itself, the system achieves dynamic lighting effects without causing wear to the light source circuit board, thus improving reliability.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If the light source is moved to create dynamic effects, then lighting diversity is improved, but internal wear increases and service life decreases

Engineering Contradiction:

Improvelighting effectsVSAvoidservice life

Core Design Contradiction:

Adaptability or versatilityVSDuration of action of stationary object

Solution Approach 1:

The patent applies inversion by keeping the light source stationary and moving the reflective medium instead. This reverses which component experiences wear from the driving mechanism, protecting the light source and its circuit board while still achieving diverse lighting effects through the movement of the mirror.

Inventive Principle:

Principle #13The other way round (Inversion)

3Reliability

If a compact structure with fixed light source is used, then reliability is improved, but dynamic lighting effects are limited

Engineering Contradiction:

Improveservice lifeVSAvoidlighting effects

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent introduces dynamics into the system by making the reflective medium movable while keeping the light source fixed. The drive component rotates the mirror to different positions, creating dynamic lighting effects that change over time, thus achieving versatility without compromising the reliability benefits of a fixed light source.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

By using a movable reflective medium as an intermediary, the system achieves dynamic lighting effects from a fixed light source. The mirror's movement creates varying light patterns and effects while the light source itself remains stationary, maintaining reliability.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 device provides a longer service life and diverse lighting effects by maintaining the light source's stability and preventing internal wear, while creating dynamic lighting effects similar to water ripples.

Implementation Method 1

a reflective medium (22)... The first driving device (25) is configured to drive the reflective medium (22) to rotate in the mount (27) through cooperation of the first driving gear (26) and the first driven gear (23)

Methodology Applied

Scientific EffectLight reflection: Reflection

Implementation Method 2

a first condenser lens (24)... Light from the at least one first incoherent light source (21) is reflected by the reflective medium (22) to the first condenser lens (24) and then refracted by the first condenser lens (24) and then emitted

Methodology Applied

Scientific EffectLight refraction: Refraction

Data Source

PatentUS11555591B1Projection device for ambient decoration having a driving device connected to a gear of a reflective medium

Publication Date: 2023.01.17 SHENZHEN BOLONG TECH CO LTD

AI summary

A projection device for ambient decoration may include a first light-emitting assembly comprising at least one first incoherent light source, a reflective medium, and a first driving device. The first light-emitting assembly may further include a mount recessed internally to define a placing groove adapted to the reflective medium, a first through-hole and a placing recess on one side of the first through-hole arranged at a bottom of the placing groove, a fixing column arranged in a center of the placing recess, and a second through-hole arranged at a bottom of the reflective medium. The first driving device may be coupled to the reflective medium, the fixing column may pass through the second through-hole into the reflective medium, and the at least one first incoherent light source may be connected to the fixing column.