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Bottom Base

July 22nd, 2010

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LED tube lights with clear bottom base

The present invention solves the aforementioned problems by providing an
LED tube
light with a clear bottom base.

The present invention relates to the design of a light emitting diode (LED) tube light (LTL) with a see-through bottom, and more particularly to an improved LTL that overcomes the difficulty of identifying appropriate cut locations thereon.

LED lamps have been developed to replace conventional incandescent or fluorescent lamps for reducing electrical and maintenance costs, and for increasing reliability. LED lamps consume less electrical energy than conventional lamps whileexhibiting much longer lifetimes. Such LED lamps typically include a power supply and a plurality of LEDs mounted on a flat or curved surface.

In the case of LED border tubes, a few LED emitters are generally laid out on a printed circuit board (PCB). While the LED emitters provide adequate illumination on the front cover of the tube, circuitry on the PCB provides the LTL withelectrical control. The PCB is typically inserted into an enclosed tube and laid on the bottom base (or back cover) of the enclosure. Most PCBs are constructed to have safe cut locations where the PCB can be cut or severed (to reduce the length of thePCB) without damaging any critical circuitry thereon. The back of the PCB, for example, could have marks made for position identification purposes.

The LED tube light of the present invention includes a printed circuit board comprising a plurality of LEDs, a plurality of markings on the printed circuit board, wherein these markings identify safe-cut locations for the LED tube light, and anenclosed tube comprising a clear bottom base.

The tube is often made of plastic materials such as Acrylonitrile Butadine Styrene (ABS), Acrylonitrile Styrene Acrylate (ASA), Polystyrene (PS), polycarbonate (PC) etc., wherein the tube front surface is often colored to match the desireddisplay color of the tube. The whole tube is often non-clear, especially when the front cover surface is not a clear one, although some tubes are clear and colorless but do not provide safe cut locations on the PCB that will avoid damage of criticalcircuits. And although tubes are usually a one-piece enclosure, some tubes are enclosures comprising multiple pieces.

Current LTLs, however, are limited when physical modifications, such as shortening tube length, are required. This difficulty stems primarily from a lack of PCB visibility in the design of traditional LTLs (i.e., LTL designs with colored tubesand non-see-through bottoms) which makes it difficult to locate safe-cut markings on the PCB, especially when the tube light is not turned on. Shortening tube length of traditional LTLs, thus requires markings to be made on the exterior of the LTL. However, because these markings must be made manually, careful measurement is required to ensure the security of the components inside the tube when the LTL is actually severed. Accordingly, there is a need for an LTL with a clear bottom base whichprovides see-though capability to facilitate a safe cutting of the tube without damaging the circuits therein.

Another aspect of the present invention is a method for manufacturing an
LED tube
light. This method includes inserting a printed circuit board within an LED tube light, wherein the LED tube light comprises a clear bottom base, and marking aplurality of locations on the printed circuit board, wherein the markings identify safe-cut locations for the LED tube light.

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Asus VivoBook S500CA HPD0101N 156 Genuine Bottom Base Case Cover 13N0 NUA0111
Asus VivoBook S500CA HPD0101N 156 Genuine Bottom Base Case Cover 13N0 NUA0111
$22.39
TOSHIBA Satellite S55t B5273NR Laptop Bottom CASE Base Enclosure Cover
TOSHIBA Satellite S55t B5273NR Laptop Bottom CASE Base Enclosure Cover
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Dell Precision M6800 Laptop Bottom Cover Base Case Door Shell VXGH9 0VXGH9
Dell Precision M6800 Laptop Bottom Cover Base Case Door Shell VXGH9 0VXGH9
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New For Dell Latitude E5550 Laptop Bottom Base Cover No SC No Dock 86N4C
New For Dell Latitude E5550 Laptop Bottom Base Cover No SC No Dock 86N4C
$49.00
HP Compaq NC6320 Laptop Base Plastics Bottom Tray 413690 001 6070B0083001 LW
HP Compaq NC6320 Laptop Base Plastics Bottom Tray 413690 001 6070B0083001 LW
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Genuine Original RM T12ER Laptop Plastics Bottom Chassis Tray Base Inc Speakers
Genuine Original RM T12ER Laptop Plastics Bottom Chassis Tray Base Inc Speakers
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TOSHIBA Satellite L655 Laptop Bottom Case Base Enclosure Cover L655D S5050
TOSHIBA Satellite L655 Laptop Bottom Case Base Enclosure Cover L655D S5050
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Bottom Case Base Cover For Acer Aspire E1 521 E1 531G E1 571 E1 571G Laptop
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$22.39
for Lenovo IdeaPad G480 G485 Laptop Bottom Lower Case Base Cover without HDMI
for Lenovo IdeaPad G480 G485 Laptop Bottom Lower Case Base Cover without HDMI
$35.99
For HP Pavilion 15 E000 15 E Series Lower Case Base Bottom Cover 37R65TP003
For HP Pavilion 15 E000 15 E Series Lower Case Base Bottom Cover 37R65TP003
$50.99
Lenovo ThinkPad T410 T410i Base Middle Frame Palmrest Bottom Chassis 60Y5472
Lenovo ThinkPad T410 T410i Base Middle Frame Palmrest Bottom Chassis 60Y5472
$14.56
for Lenovo Ideapad G480 G485 Bottom Lower Case Base Cover with HDMI AP0N1000100
for Lenovo Ideapad G480 G485 Bottom Lower Case Base Cover with HDMI AP0N1000100
$35.98
New Bottom Base Cover Case For IBM Lenovo Thinkpad T440 Laptop AP0SR001800 USA
New Bottom Base Cover Case For IBM Lenovo Thinkpad T440 Laptop AP0SR001800 USA
$34.95
Samsung Notebook NP300E4X Bottom Base BA75 03370A
Samsung Notebook NP300E4X Bottom Base BA75 03370A
$11.67
New Original Lenovo G580 G585 Bottom Base Cover Lower Case without HDMI
New Original Lenovo G580 G585 Bottom Base Cover Lower Case without HDMI
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SAMSUNG Chrome Book NP XE303C12 Laptop Bottom Cover Base Shell Case BA75 04168A
SAMSUNG Chrome Book NP XE303C12 Laptop Bottom Cover Base Shell Case BA75 04168A
$36.00
598759 001 610041 001 CPU base enclosure chassis bottom Includes display r
598759 001 610041 001 CPU base enclosure chassis bottom Includes display r
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New Genuine For Lenovo Thinkpad T470S Bottom Base Cover Case TP00072B
New Genuine For Lenovo Thinkpad T470S Bottom Base Cover Case TP00072B
$36.99
New Genuine For Lenovo FLEX2 14 Bottom Base Cover Case 5CB0F76736
New Genuine For Lenovo FLEX2 14 Bottom Base Cover Case 5CB0F76736
$29.99
New Genuine Bottom Base Cover Case 5CB0F76736 For Lenovo FLEX2 14
New Genuine Bottom Base Cover Case 5CB0F76736 For Lenovo FLEX2 14
$27.72
New Genuine Bottom Base Cover Case TP00072B For Lenovo Thinkpad T470S
New Genuine Bottom Base Cover Case TP00072B For Lenovo Thinkpad T470S
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HP Stream 14 ax010wm 14 Genuine Bottom Base Case Cover TFQ370P9TP103AKN244
HP Stream 14 ax010wm 14 Genuine Bottom Base Case Cover TFQ370P9TP103AKN244
$29.85
New For Dell Latitude E5470 5470 Bottom Cover Back Lid Base Shell 0TJY1D TJY1D
New For Dell Latitude E5470 5470 Bottom Cover Back Lid Base Shell 0TJY1D TJY1D
$34.80
New Bottom Base Case Cover For Lenovo G50 45 G50 70 G50 80 Laptop AP0TH000800
New Bottom Base Case Cover For Lenovo G50 45 G50 70 G50 80 Laptop AP0TH000800
$22.50
New for Lenovo G50 45 G50 70 G50 80 Bottom Base Case Cover AP0TH000800 US Seller
New for Lenovo G50 45 G50 70 G50 80 Bottom Base Case Cover AP0TH000800 US Seller
$23.19
Bottom Base Case Cover AP0TH000800 For Lenovo G50 30 G50 45 G50 70 G50 80 Laptop
Bottom Base Case Cover AP0TH000800 For Lenovo G50 30 G50 45 G50 70 G50 80 Laptop
$23.18
NEW Bottom Case Base Cover For HP Pavilion TPN Q110 TPN Q107
NEW Bottom Case Base Cover For HP Pavilion TPN Q110 TPN Q107
$32.55
Genuine Dell Latitude E6440 Bottom Base Case Cover DKWJW GRADE A
Genuine Dell Latitude E6440 Bottom Base Case Cover DKWJW GRADE A
$11.88
Toshiba Satellite L640 EZ1410 Bottom Base Case 3CTE2BA0I70100 BC1027
Toshiba Satellite L640 EZ1410 Bottom Base Case 3CTE2BA0I70100 BC1027
$29.99
New Bottom Lower Case Base Cover 5CB0K28177 for Lenovo Edge 2 1580
New Bottom Lower Case Base Cover 5CB0K28177 for Lenovo Edge 2 1580
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HP Pavilion ZV6000 Series Bottom Base Cover 383921 001 Used
HP Pavilion ZV6000 Series Bottom Base Cover 383921 001 Used
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ASUS Chromebook C200MA EDU Laptop Base Bottom Case 13NB05M1AP0101
ASUS Chromebook C200MA EDU Laptop Base Bottom Case 13NB05M1AP0101
$9.99
768124 001 AP15A000500 HP Probook 450 G2 Lower Case Base Cover Bottom Case A1128
768124 001 AP15A000500 HP Probook 450 G2 Lower Case Base Cover Bottom Case A1128
$22.00
TOSHIBA Satellite L645 Series Laptop Bottom CASE Base Enclosure L645D S4030
TOSHIBA Satellite L645 Series Laptop Bottom CASE Base Enclosure L645D S4030
$27.89
TOSHIBA Satellite L745 Series Laptop Bottom CASE Base Enclosure L745 S4235
TOSHIBA Satellite L745 Series Laptop Bottom CASE Base Enclosure L745 S4235
$27.89
TOSHIBA Satellite L645 Series Laptop Bottom CASE Base Enclosure L645 S4102
TOSHIBA Satellite L645 Series Laptop Bottom CASE Base Enclosure L645 S4102
$32.54
Hp Pavilion dv9000 Bottom Base Case Cover Laptop Replacement Parts
Hp Pavilion dv9000 Bottom Base Case Cover Laptop Replacement Parts
$14.99
5CB0K28177 New for Lenovo Edge 2 15 2 1580 Laptop Bottom Case Lower Base Cover
5CB0K28177 New for Lenovo Edge 2 15 2 1580 Laptop Bottom Case Lower Base Cover
$49.99
New Bottom Lower Case Base Cover AP0YC000120 Sil for Lenovo Yoga 700 14ISK 3 14
New Bottom Lower Case Base Cover AP0YC000120 Sil for Lenovo Yoga 700 14ISK 3 14
$45.99

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