Benq Corporation

Acer Communications and Multimedia Inc.

Don Liang

Kan-Chuan Cheng

Jyh-Min Lai

A light device includes a light bulb set and a thermal diffusion guide disposed around the light bulb set. The light bulb set has an outer wall. The thermal diffusion guide keeps a distance from the outer wall to form an air passage for restricting an air flow to flow through. The thermal diffusion guide has an outer rim forming a first air surface between the rim and the outer wall for collecting the air flow to flow into the air passage, so as to increase thermal diffusion efficiency. The present invention further discloses a light device, including a light bulb set, a shield above the light bulb set and a diffusion plate above the shield. A first air isolation layer is formed between the shield and the diffusion plate.

High thermal diffusion efficiency light device

The present invention relates to a light device with a heat-dissipating apparatus, including a bulb assembly and a hood positioned outside the bulb assembly to generate cyclone passing by the outer surface of the bulb assembly. The hood of the present invention further includes a plurality of blades and a neck. As the airflow passes through the hood, the blades and the neck divert the airflow into cyclone passing by the outer surface of the bulb assembly to facilitate heat dissipation. The present invention may further include a first heat-isolating board and a second heat-isolating board to isolate heat radiation.

Light device with heat-dissipating apparatus

A projection system includes a total reflection element, an image reader, an analysis system and a server device. The image reader reads a projective image guided by the optical projection device and the total reflection element and outputs a read signal. The analysis system analyzes the read image by an evaluation function and determines the clearest image on the projective plane so as to output an adjustment signal. The server device automatically performs the focal adjustment to the optical projection device based on the adjustment signal.

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Chung Li, Taiwan

Don Liang