BACKLIGHT STRUCTURE
First Claim
1. A backlight structure comprising:
- a light source module having a plurality of light sources;
a light guide plate receiving, through a side surface thereof, and emitting, through a front surface thereof, light from the light sources;
a rear plate disposed at a rear side of the light source module and the light guide plate and having, at the rear side of the light source module, a protruding portion protruding rearward;
a cooling fan disposed at the rear side of part, other than the protruding portion, of the rear plate;
a fan-mount plate having the cooling fan mounted thereon, the fan-mount plate being so disposed as to form a gap between the rear plate and the fan-mount plate; and
a first wind passage formed in the gap between the rear plate and the fan-mount plate and permitting wind from the cooling fan to pass along a surface of the protruding portion of the rear plate and then to be exhausted.
1 Assignment
0 Petitions
Accused Products
Abstract
A backlight structure includes: light source modules 1 and 1; a light guide plate 2 disposed between the light source modules 1 and 1; a rear plate 3 disposed at the rear side of the light source modules 1 and the light guide plate 2; a fan-mount plate 4 disposed at the rear side of the rear plate 3; and a cooling fan 5 mounted on the fan-mount plate 4. The rear plate 3 has portions thereof at the rear side of the light source modules 1 and 1 formed into protruding portions 3a, and has a portion thereof between the upper and lower protruding portions 3a formed into a flat surface 3b. A cooling wind passage 11 is formed between a front surface 4a of the fan-mount plate and the flat surface 3b of the rear plate. Heat from LED chips 1a of the light source modules is made to concentrate at the protruding portions 3a of the rear plate and is then rejected into the outside by the wind guided from the cooling fan 5 into the cooling wind passage 11.
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Citations
24 Claims
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1. A backlight structure comprising:
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a light source module having a plurality of light sources; a light guide plate receiving, through a side surface thereof, and emitting, through a front surface thereof, light from the light sources; a rear plate disposed at a rear side of the light source module and the light guide plate and having, at the rear side of the light source module, a protruding portion protruding rearward; a cooling fan disposed at the rear side of part, other than the protruding portion, of the rear plate; a fan-mount plate having the cooling fan mounted thereon, the fan-mount plate being so disposed as to form a gap between the rear plate and the fan-mount plate; and a first wind passage formed in the gap between the rear plate and the fan-mount plate and permitting wind from the cooling fan to pass along a surface of the protruding portion of the rear plate and then to be exhausted. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification
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- Resources
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Current AssigneeSharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
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Original AssigneeSharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
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InventorsHamada, Tetsuya
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current362/632
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CPC Class CodesF21V 29/67 characterised by the arrang...F21V 29/677 the fans being used for dis...F21V 29/74 with fins or bladesF21V 29/76 with essentially identical ...G02F 1/133615 Edge-illuminating devices, ...G02F 1/133628 with cooling meansG02F 2201/36 Airflow channels, e.g. cons...
