LED Flame Simulator Flicker Control With Low-Noise Airflow

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Solution Overview

Problem

Existing flame simulators face challenges in producing realistic flame effects with reduced heat, maintenance, and cost, as they often use short-lived incandescent bulbs, noisy fans, and unrealistic flame elements, leading to safety hazards and rapid deterioration.

Innovation Solution

The use of high-powered LEDs with adjustable brightness, low-capacity fans, and fabric flame elements with laser-cut edges and fray-blocking treatments, along with a programmable controller to create realistic flickering effects and reduce heat through heat sinks, addresses these issues.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If incandescent bulbs are used to illuminate flame elements, then the flame effect is achieved, but the bulbs have short lives and produce significant heat creating safety hazards

Engineering Contradiction:
Improveflame illuminationVSAvoidbulb life
Core Design Contradiction:
Illumination intensityVSReliability

Solution Approach 1:

The patent changes the illumination source from incandescent bulbs to LEDs, which operate at different temperature and energy efficiency parameters. LEDs provide sufficient illumination for flame elements while generating minimal heat, extending component life and eliminating safety hazards associated with hot bulbs.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent replaces the thermal radiation mechanism of incandescent bulbs with the electroluminescence mechanism of LEDs. This substitution eliminates the need for high-temperature operation while maintaining illumination effectiveness, thereby extending bulb life and reducing safety risks.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Illumination intensity

If incandescent bulbs are used to illuminate flame elements, then the flame effect is achieved, but significant heat is produced creating safety hazards

Engineering Contradiction:
Improveflame illuminationVSAvoidheat production
Core Design Contradiction:
Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the illumination source from incandescent bulbs to LEDs, which operate at different temperature and energy efficiency parameters. LEDs provide sufficient illumination for flame elements while generating minimal heat, eliminating safety hazards associated with hot bulbs.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent replaces the thermal radiation mechanism of incandescent bulbs with the electroluminescence mechanism of LEDs. This substitution eliminates the need for high-temperature operation while maintaining illumination effectiveness, thereby reducing heat production and safety risks.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Illumination intensity

If fans or blowers are used to create air flow over flame elements, then the flickering effect is enhanced, but the fans are noisy and move large volumes of air causing unrealistic flame movement

Engineering Contradiction:
Improveflame flicker effectVSAvoidnoise
Core Design Contradiction:
Illumination intensityVSObject-generated harmful factors

Solution Approach 1:

The patent changes the fan capacity parameters, selecting smaller fans that move reduced volumes of air at lower speeds. This reduces noise levels while maintaining sufficient air flow to create realistic flame flicker effects, eliminating the harmful noise factor.

Inventive Principle:
Principle #35Parameter changes

4Illumination intensity

If large volume air flow is used over flame elements, then the flickering effect is enhanced, but the flame elements move unrealistically and air currents spoil the fire simulation

Engineering Contradiction:
Improveflame flicker effectVSAvoidflame element movement
Core Design Contradiction:
Illumination intensityVSShape

Solution Approach 1:

The patent changes the fan capacity parameters, selecting smaller fans that move reduced volumes of air at lower speeds. This reduces air flow volume to create more subtle, realistic flame movement while maintaining sufficient flow to enhance the flicker effect, eliminating unrealistic flame element movement.

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 solution provides improved longevity, reduced maintenance, and enhanced realism in flame simulations with safer operation and reduced heat, making the flame simulators more efficient and cost-effective.

Implementation Method 1

cutting the flame bodies from silk sheets with a laser to sear or fuse the threads in the edge

Methodology Applied
Scientific EffectLaser: Laser

Implementation Method 2

reduce heat through heat sinks

Methodology Applied
Scientific EffectHeat sink: Heat Sink

Data Source

PatentUS7686471B2Standalone flame simulator
Publication Date: 2010.03.30 DISNEY ENTERPRISES INC
  • US7686471B2 patent drawing
  • US7686471B2 patent drawing
  • US7686471B2 patent drawing

AI summary

An apparatus for simulating flames using fabric flame sheets or elements. The apparatus includes a fan or blower for producing a volume of air flow and two or more flame elements positioned in the fan air flow. First and second light sources, such as high powered light emitting diodes (LEDs), are provided to produce light beams having two differing colors such as an amber beam and an orange/red beam. The light beams are directed so as to mix or cross on or near the flame elements when the flame elements extend outward from their mounting location into the fan air flow. Each of the LEDs has a brightness level that can be tuned or adjusted by a controller, which may be manual or may be automated to modify the brightness level of at least one of the LEDs and typically both LEDs during the operation of the flame simulator.