Wheel assembly and projection device using the same

Abstract

A wheel assembly and a projection device using the same are disclosed. The wheel assembly includes a housing, a rotary table, and a thermal conductive assembly. The housing is provided with an enclosed space. The rotary table is disposed in the enclosed space of the housing and includes a first surface, a second surface, and a wavelength conversion layer. The first surface is provided with a coating area and is opposite to the second surface. The wavelength conversion layer is formed on a coating area of the first surface and configured to convert wavelength of a light beam. The thermal conductive assembly includes a thermal conductive structure and a thermal conductive tube. The thermal conductive structure corresponds to an edge contour of the rotary table and is disposed adjacent to an outer edge of the rotary table. The thermal conductive tube is coupled to the thermal conductive structure and partially protrudes to an exterior of the housing for conducting heat generated by the rotary table from the thermal conductive structure to the exterior of the housing.

Description

technical field [0001] The invention relates to a projection device, in particular to a projection device with a rotating wheel combination. Background technique [0002] The projection device is a common image display device, which is widely used in life and entertainment, academic lectures, business exhibitions and other occasions. According to its display principle, the projection system can be divided into early cathode ray tube (Cathode-Ray Tube, CRT) projection device, modern liquid crystal display (Liquid Crystal Display, LCD) projection device, digital light processing (Digital Light Processing, DLP) Projection devices and Liquid Crystal on Silicon (LCoS) projection devices, etc. Among them, digital light processing projection devices are favored by consumers because of their advantages such as high brightness, vivid colors, high response rate, thin and small devices, and occupy the main market of current projection system products. [0003] The digital light proce...

AI Technical Summary

Problems solved by technology

However, the energy loss caused by light conversion on the turntable and the rotation of the turntable driven by the motor will generate additional heat energy, which will cause the temperature in the cavity to rise, resulting in a decrease in the optical efficiency of the phosphor due to excessive temperature

At the same time, the temperature-resistant specification of the phosphor coating glue is also low, so when the temperature inside the housing is too high, the phosphor coating glue may burn.

Images