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US 8,710,751 B2Granted
LED string with a capability to maintain a current path and LED unit thereof
AssigneePolestar Electric Industries Co., Ltd.
InventorChucheng Chang
Life of this patent
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AssigneePolestar Electric Industries Co., Ltd.
InventorChucheng Chang
Estimating the term…
An LED string with a capability to maintain a current path has multiple LED units electrically connected in series. Each of the LED units has a base, a holder, a bridge device, a cover and an LED device. The base has two conductive pads. The holder and the cover are mounted in the base. The bridge device is mounted in the holder. The LED device is mounted in the cover. The bridge device and the LED device are electrically connected in parallel and contact the conductive pads. When the LED device is damaged, the bridge device still contacts the conductive pads. Hence, the bridge device provides a path that allows a current to flow through the conductive pads.
An LED string with a capability to maintain a connecting state comprising multiple LED units electrically connected in series, each of the LED units comprising:
An LED unit comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Lighting devices or systems using a string or strip of light sources: with light sources attached to loose electric cables, e.g. Christmas tree lights
Responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits: involving end of life detection of LEDs
Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00: for Christmas trees
Light-generating elements of semiconductor light sources: light-emitting diodes [LED]
About 6 years 1 month of term left · ends 20 Nov 2032 (estimated)
1. Field of the Invention
The present invention relates an LED string, and more particularly to an LED string with a capability to maintain a current path and an LED unit thereof.
2. Description of Related Art
FIG. 1 is a planer view of an LED string in accordance with the present invention;
FIG. 2 is a perspective view of an LED unit in accordance with the present invention;
FIG. 3 is an exploded view of the LED unit in accordance with the present invention; and
With reference to FIG. 1, an LED string 10 in accordance with the present invention comprises multiple LED units 11 electrically connected in series. The LED string 10 is adapted to electrically connect to a plug 12. When the plug 12 connects to a power source, the power source provides a working voltage and a working current to activate the LED string 10.
With reference to FIGS. 2-4, each of the LED units 11 comprises a base 21, a holder 22, a bridge device 23, a cover 24 and an LED device 25.
The base 21 has a top, an inner space 211, two grooves 212 and two conductive pads 213. The inner space 211 has a top opening 214 formed in the top of the base 21. The grooves 212 are oppositely formed in the inner space 211. The conductive pads 213 are respectively mounted in the grooves 212 and are adapted to electrically connect to wires 215. The wires 215 are respectively connected to the conductive pads 213 of the other LED units 11.