Modular rear projection display and combined device used thereof

Abstract

A combination structure is used in a rear projection display device, for combining a screen module and an optical engine module in the rear projection display device. The combination structure includes a first positioning structure and a second positioning structure, the first positioning structure being disposed under the screen module, the second positioning structure being corresponding to the first positioning structure and disposed above the optical engine module. Wherein, the first positioning structure and the second positioning structure are matched up to be connected together, for the screen module to be directly connected with the optical engine module.

Description

【Technical field】 [0001] The present invention relates to a rear projection display device, in particular to a modular rear projection display device and a combination device for the rear projection display device. 【Background technique】 [0002] Among several types of flat panel displays gradually becoming mainstream, rear projection display devices have the advantages of power saving, large display area, and low price, and are quite popular in the consumer market. [0003] see figure 1 , figure 1 is a schematic diagram of a combination device 4 of a rear projection display device in the prior art. In addition to the optical engine 6 inside the conventional rear projection display device 2 , the housing combination device 4 mainly includes a front frame 402 , a rear screen housing 404 , and a base 406 . [0004] The front frame 402, the rear screen shell 404, and the base 406 of the prior art are all in contact with the screen and are related to the size of the screen. S...

AI Technical Summary

Problems solved by technology

[0004] The front frame 402, the rear screen shell 404, and the base 406 of the prior art are all in contact with the screen and are related to the size of the screen. Such a combination method has a disadvantage. When it is necessary to produce back screens with different screen sizes The projection display device 2, such as 52 o'clock, 56 o'clock, 60 o'clock..., must be matched with the front frame 402, rear screen shell 404, and base 406 of different sizes, and the manufacturer needs to spend more on mold opening and development. cost

[0005] In addition, the optical machine 6 is directly installed inside the combination device 4. In order to prevent the high heat of the optical machine 6 from being transferred upwards to structures such as the screen 8 that cannot withstand high temperatures, a heat shield needs to be installed inside the screen housing 404. 10. In this way, many difficulties will occur in product assembly

[0006] In addition, the position where the electronic device is placed in the rear projection display device must meet the requirements of a fire protection level in safety regulations. However, in the conventional display device, electronic devices such as the optical engine 6 and the power supply are placed on the rear screen case 404 and the base. In the space formed by 406, the materials of the entire rear screen shell 404 and the base 406 must be made of expensive fireproof materials in order to reach the fireproof level of safety regulations, so the cost of the rear projection display device will increase

Images