一种具有新型内循环散热风道的投影仪光机及投影仪
By adding heat-insulating glass and expanding the heat sink in the projector's optical engine, and combining internal and external fans and air guides to form a circulating heat dissipation channel, the problems of heat accumulation and large size of the lens module are solved, achieving efficient heat dissipation and compact design.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGSHA CRE ELECTRONICS TECH CO LTD
- Filing Date
- 2025-08-18
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional projectors suffer from problems such as heat buildup in the lens module causing the polarizer to yellow, small heat dissipation area, and large size making them inconvenient to carry.
Design a projector optical engine with a novel internal circulation heat dissipation channel. By adding heat-insulating glass and increasing the heat sink area in the lens module, and combining internal and external fans and air guide shrouds to form a circulation heat dissipation channel, the heat dissipation efficiency is improved and the optical engine structure is compact.
It effectively prevents the polarizer from yellowing, improves heat dissipation efficiency, reduces the size of the projector, and makes it easy to carry and use.
Smart Images
Figure CN224519122U_ABST
Abstract
Claims
1. A projector light engine with a novel internal circulation heat dissipation air duct, characterized in that, Includes a housing, light source board, light chamber, lens module, reflector, projection lens, heat sink, internal fan, first air guide shroud, second air guide shroud, and external fan. The internal fan, light chamber, reflector, and lens module are disposed inside the housing. A projection port is provided on the rear side of the upper end of the housing. The front end of the projection lens is located inside the projection port. The reflector is obliquely disposed in front of the projection lens. The lens module is located below the reflector. The light chamber is located below the lens module. A light chamber mounting hole is provided on the lower end face of the housing. The lower end of the light chamber passes through the light chamber mounting hole and is inserted into the light chamber mounting hole. The light source board is mounted on the lower end of the housing, and the light-emitting element on its top is located inside the lower end of the light chamber. The internal fan is located on the right side of the reflector, and an air inlet is provided on its right side wall. The air outlet of the internal fan is connected to the air inlet at the upper right end of the lens module through the first air guide shroud. The air outlet at the upper left end of the lens module is connected to the air inlet at the lower left end of the lens module. The air outlet at the lower right end of the lens module is connected to the air inlet end of the second air guide shroud. The air outlet end of the second air guide shroud extends downward. A heat dissipation vent is provided on the right side wall of the housing. The left end of the heat sink is located inside the heat dissipation vent. The gap between the second air guide shroud and the housing, the gap between the second air guide shroud and the heat sink, the gap between the first air guide shroud and the heat sink, and the gap between the internal fan and the heat sink together form a return air channel. The external fan is located on the right side of the upper end of the heat sink.
2. The projector light engine with a new type of internal circulation heat dissipation air duct according to claim 1, characterized in that, The light chamber, projection lens, and heat sink are respectively sealed to the housing.
3. A projector optical engine with a novel internal circulation heat dissipation air duct according to claim 1, characterized in that, The light chamber is sealed to the lens module.
4. The projector light engine with a new type of internal circulation heat dissipation air duct according to claim 1, characterized in that, The lens module includes a lens frame. Inside the lens frame, from top to bottom, are horizontally arranged a rear Nefertory lens, a first heat-insulating glass, an LCD screen, a second heat-insulating glass, and a front Nefertory lens. The gap between the rear Nefertory lens and the first heat-insulating glass forms a first air inlet channel, the gap between the first heat-insulating glass and the LCD screen forms a second air inlet channel, the gap between the LCD screen and the second heat-insulating glass forms a first air outlet channel, and the gap between the second heat-insulating glass and the front Nefertory lens forms a second air outlet channel. The air outlet of the internal fan is connected to the left end of the first air inlet channel and the second air inlet channel through the first air guide hood. The left end of the first air inlet channel and the second air inlet channel is connected to the left end of the first air outlet channel and the second air outlet channel. The right end of the first air outlet channel and the second air outlet channel is connected to the air inlet end of the second air guide hood.
5. The projector light engine with a new type of internal circulation heat dissipation air duct according to claim 4, characterized in that, A protrusion is provided on the housing at a position opposite to the left end of the first air inlet channel, the second air inlet channel, the first air outlet channel, and the second air outlet channel. The left ends of the first air inlet channel and the second air inlet channel are connected to the left ends of the first air outlet channel and the second air outlet channel through the protrusion.
6. The projector light engine with a new type of internal circulation heat dissipation air duct according to claim 5, characterized in that, The first air guide cover and the second air guide cover are integrally formed, and the left side of the connection between the first air guide cover and the second air guide cover is sealed to the lens frame.
7. The projector light engine with a new type of internal circulation heat dissipation air duct according to claim 1, characterized in that, The radiator includes a radiator plate. Multiple heat dissipation fins are arranged side by side on the left and right sides of the radiator plate. The heat dissipation fins on the left side of the radiator plate are located inside the housing. The radiator plate covers the outside of the heat dissipation port. The heat dissipation fins on the right side of the radiator plate are located at their lower ends. An external fan is located at the upper end of the right side of the radiator plate, and the air outlet of the external fan is downward. An air inlet is provided on the right side of the external fan.
8. A projector optical engine with a novel internal circulation heat dissipation air duct according to claim 7, characterized in that, The heat dissipation fins on the left and right side walls of the radiator plate are arranged longitudinally at intervals. The width of the upper part of the heat dissipation fin on the left side wall of the radiator plate is smaller than the width of the lower part.
9. A projector comprising a housing, characterized in that It also includes a projector optical engine with a novel internal circulation cooling duct as described in any one of claims 1-8, wherein the projector optical engine with a novel internal circulation cooling duct is disposed inside the housing.