US 12,146,645 B2Granted

Illumination device and projection device

AssigneeCoretronic Corporation

InventorChia-Cheng Wu

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Abstract

An illumination device includes a first heat source, a second heat source, a third heat source, a first porous heat dissipation element, a second porous heat dissipation element, a third porous heat dissipation element, a first guide pipe, and a second guide pipe. The first porous heat dissipation element is connected to the first heat source, the second porous heat dissipation element is connected to the second heat source, and the third porous heat dissipation element is connected to the third heat source. The first guide pipe is connected to the first porous heat dissipation element and the third porous heat dissipation element, and the second guide pipe is connected to the second porous heat dissipation element and the third porous heat dissipation element. The disclosure also provides a projection device with the aforementioned illumination device.

Claims19

Dependent claims

An illumination device, comprising:

a first heat source, a second heat source, and a third heat source;
a first porous heat dissipation element, connected to the first heat source and having a first ventilation side, a second ventilation side, and a plurality of first flow channels, wherein the first ventilation side is opposite to the second ventilation side, and the plurality of first flow channels extend from the first ventilation side to the second ventilation side;
a second porous heat dissipation element, connected to the second heat source and having a third ventilation side, a fourth ventilation side, and a plurality of second flow channels, wherein the third ventilation side is opposite to the fourth ventilation side, and the plurality of second flow channels extend from the third ventilation side to the fourth ventilation side;
a third porous heat dissipation element, connected to the third heat source and having a fifth ventilation side, a sixth ventilation side, and a plurality of third flow channels, wherein the fifth ventilation side is opposite to the sixth ventilation side, and the plurality of third flow channels extend from the fifth ventilation side to the sixth ventilation side;
a first guide pipe, connected to the second ventilation side and the fifth ventilation side and communicated to the plurality of first flow channels and the plurality of third flow channels;
and
a second guide pipe, connected to the fourth ventilation side and the sixth ventilation side and communicated to the plurality of second flow channels and the plurality of third flow channels.

4 more elements

A projection device, comprising:

an illumination device, a display element, and a projection lens, wherein
the illumination device is configured to provide an illumination beam, and the illumination device comprises:
a first heat source, a second heat source, and a third heat source;
a first porous heat dissipation element, connected to the first heat source and having a first ventilation side, a second ventilation side, and a plurality of first flow channels, wherein the first ventilation side is opposite to the second ventilation side, and the plurality of first flow channels extend from the first ventilation side to the second ventilation side;
a second porous heat dissipation element, connected to the second heat source and having a third ventilation side, a fourth ventilation side, and a plurality of second flow channels, wherein the third ventilation side is opposite to the fourth ventilation side, and the plurality of second flow channels extend from the third ventilation side to the fourth ventilation side;
a third porous heat dissipation element, connected to the third heat source and having a fifth ventilation side, a sixth ventilation side, and a plurality of third flow channels, wherein the fifth ventilation side is opposite to the sixth ventilation side, and the plurality of third flow channels extend from the fifth ventilation side to the sixth ventilation side;
a first guide pipe, connected to the second ventilation side and the fifth ventilation side and communicated to the plurality of first flow channels and the plurality of third flow channels;
and
a second guide pipe, connected to the fourth ventilation side and the sixth ventilation side and communicated to the plurality of second flow channels and the plurality of third flow channels;
the display element is located on a transmission path of the illumination beam and is configured to receive the illumination beam and convert the illumination beam into an image beam;
and
the projection lens is located on a transmission path of the image beam and is configured to project the image beam out of the projection device.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/402,759Filed 3 Jan 2024
Priority: CN 202310013199.05 Jan 2023
Published: US 2024/0230078 A111 Jul 2024
Granted: 19 Nov 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

F21V 29/717
Using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between…:…
F21V 29/503
Characterised by the adaptation for cooling of specific components: of light sources
H04N 9/3144
Constructional details thereof: cooling systems
H04N 9/3164
Modulator illumination systems: using multiple light sources