Light emitting device, outdoor lighting device, and optical warning device
By converting thermal energy into sound waves through a thermoacoustic compressor inside a resonant tube to drive the luminescent material to emit light, the problem of complex structure and low reliability of existing light-emitting devices is solved, achieving a highly reliable and portable light-emitting effect.
CN119146374BActive Publication Date: 2026-03-17TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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Patent Information
- Application Number
- CN202310724108.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-16
- Publication Date
- 2026-03-17
- Estimated Expiration
- 2043-06-16
AI Technical Summary
Technical Problem
Existing light-emitting devices rely on electric power, and the generators have complex structures and low reliability, resulting in reduced reliability and inconvenience in carrying them.
Method used
The thermoacoustic compressor inside the resonant tube converts thermal energy into mechanical energy in the form of sound waves, driving the luminescent material to vibrate and emit light. This eliminates the need for a generator, resulting in a simple structure and high reliability.
Benefits of technology
It realizes the direct conversion of thermal energy into light energy. The device has a simple structure, high reliability, long life, is suitable for outdoor environments, and does not require battery power.
✦ Generated by Eureka AI based on patent content.
Abstract
The application provides a light emitting device, an outdoor lighting device and an optical alarm device, which comprise a resonant tube, a thermoacoustic compressor and a light emitting body. The thermoacoustic compressor is arranged at one end of the resonant tube, and the light emitting body is arranged at the other end of the resonant tube. The thermoacoustic compressor can make the gas at the position where the thermoacoustic compressor is arranged of the resonant tube vibrate, so as to generate sound waves, the sound waves propagate along the axial direction of the resonant tube, when the sound waves propagate to the position of the light emitting body, the light emitting body is driven to vibrate, and the light emitting body emits light when the light emitting body vibrates, because the light emitting body uses a mechanoluminescent material. The light emitting device provided by the application converts heat energy into mechanical energy in the form of sound waves through the thermoacoustic effect, and then drives the mechanoluminescent material to vibrate, and the mechanoluminescent material converts the mechanical energy into light through the mechanoluminescent effect. Because the light emitting device provided by the application has almost no moving parts, the light emitting device has the advantages of simple structure, high reliability and long service life.
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