Light bulb with led symbols
AssigneeGean Technology Co. Limited
InventorsChi Keung Yeung, Pan Man Wong, Shan Mei Wan
Life of this patent
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Abstract
A light bulb with LED symbols includes a light bulb shell, at least one LED light source, a driver, and an electrical connector. The LED light source includes electrodes and at least one LED substrate with LED chips mounted thereon. The LED substrate has a shape of a pattern, letter, word, logo, character or sign. The LED light source is housed inside a vacuum sealed chamber. The electrodes are connected to a pair of electrical wires, which are connected to a driver and an electrical connector. A method of manufacturing the light bulb is also disclosed.
Claims20
A light bulb with LED symbols, the light bulb comprising:
- a light bulb shell;
- a core column with an exhaust tube and a bracket;
- at least one LED light source;
- a driver;
- and
- an electrical connector,
- wherein the LED light source comprises at least one LED substrate with a plurality of LED chips mounted thereon, the at least one LED substrate having a shape of a pattern, letter, word, logo, character or sign,
- wherein the LED light source comprises first and second electrodes,
- wherein the LED light bulb shell is vacuum sealed with the core column so as to form a vacuum sealed chamber, which is filled with a gas having a low coefficient of viscosity and a high coefficient of thermal conductivity,
- wherein the bracket and the LED light source fixed thereon are housed in the vacuum sealed chamber, and
- wherein the LED light source is electrically connected to the driver via a pair of electrical wires, the driver being connected to the electrical connector, and the electrical connector being electrically connected to an external power supply so as to light the LED light source.
A light bulb with LED symbols, the light bulb comprising:
- a light bulb shell;
- at least one LED light source;
- a driver;
- and
- an electrical connector,
- wherein the LED light source comprises at least one LED substrate with a plurality of LED chips mounted thereon, the at least one LED substrate having a shape of a pattern, letter, word, logo, character or sign,
- wherein the light bulb shell is vacuum sealed so as to form a vacuum sealed chamber, which is filled with a gas having a low coefficient of viscosity and a high coefficient of thermal conductivity,
- wherein the LED light source is housed in the vacuum sealed chamber, and
- wherein the LED light source is electrically connected to the driver via a pair of electrical wires, the driver being connected to the electrical connector.
A method for manufacturing a light bulb with LED symbols, the method comprising:
- preparing an LED substrate in a shape of a symbol;
- fixing a pair of electrodes to two ends of the LED substrate;
- fixing a plurality of LED chips onto the LED substrate by a die bonding material, the LED chips being connected to one another and connected to the electrodes by LED connecting wires to form an LED light source;
- coating the LED substrate, the LED chips and the LED connecting wires with a photo luminescent powder layer;
- connecting the electrodes to a pair of electrical wires such that the LED light source can be fixed onto the electrical wires;
- forming a vacuum sealed chamber with the LED light source mounted therein, and filling the vacuum sealed chamber with a gas having a low coefficient of viscosity and a high coefficient of thermal conductivity;
- connecting the electrical wires with a driver;
- and
- connecting the driver with an electrical connector by a plurality of driver connecting wires.
Dependencies are inferred from the claim text.