LED bulb lamp
First Claim
Patent Images
1. An LED light bulb, comprising:
- a bulb shell;
a bulb base connected with the bulb shell;
two conductive supports disposed in the bulb shell;
a stem extending from the bulb base to inside of the bulb shell; and
an LED filament comprising;
a plurality of LED chips arranged in an array along an elongated direction of the LED filament; and
two conductive electrodes respectively disposed at two ends of the LED filament and connected to the LED chips, wherein the two conductive electrodes are respectively connected to the two conductive supports;
wherein the LED filament is curled to satisfy symmetry characteristics in which;
while a top view of the LED light bulb is presented in a two dimensional coordinate system defining four quadrants with a X-axis crossing the stem, a Y-axis crossing the stem, and an origin, a brightness presented by a portion of the LED filament in the first quadrant in the top view is symmetric to a brightness presented by a portion of the LED filament in the second quadrant in the top view with respect to the Y-axis and/or is symmetric to a brightness presented by a portion of the LED filament in the third quadrant in the top view with respect to the origin; and
while a side view of the LED light bulb is presented in another two dimensional coordinate system defining four quadrants with a Y′
-axis aligned with the stem, an X′
-axis crossing the Y′
-axis, and an origin, a brightness presented by a portion of the LED filament in the first quadrant in the side view is symmetric to a brightness presented by a portion of the LED filament in the second quadrant in the side view with respect to the Y′
-axis.
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Abstract
An LED light bulb includes a bulb shell, a bulb base, two conductive supports, a stem, and an LED filament. The bulb base is connected with the bulb shell. The two conductive supports are disposed in the bulb shell. The stem extends from the bulb base to inside of the bulb shell. The LED filament includes a plurality of LED chips and two conductive electrodes. The LED chips are arranged in an array along an elongated direction of the LED filament. The two conductive electrodes are respectively disposed at two ends of the LED filament and connected to the LED chips. The two conductive electrodes are respectively connected to the two conductive supports. The LED filament is curled to satisfy symmetry characteristics. Brightness presented by portions of the LED filament in different quadrants in a top view or in a side view is in line symmetry or in point symmetry.
45 Citations
45 Claims
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1. An LED light bulb, comprising:
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a bulb shell; a bulb base connected with the bulb shell; two conductive supports disposed in the bulb shell; a stem extending from the bulb base to inside of the bulb shell; and an LED filament comprising; a plurality of LED chips arranged in an array along an elongated direction of the LED filament; and two conductive electrodes respectively disposed at two ends of the LED filament and connected to the LED chips, wherein the two conductive electrodes are respectively connected to the two conductive supports; wherein the LED filament is curled to satisfy symmetry characteristics in which; while a top view of the LED light bulb is presented in a two dimensional coordinate system defining four quadrants with a X-axis crossing the stem, a Y-axis crossing the stem, and an origin, a brightness presented by a portion of the LED filament in the first quadrant in the top view is symmetric to a brightness presented by a portion of the LED filament in the second quadrant in the top view with respect to the Y-axis and/or is symmetric to a brightness presented by a portion of the LED filament in the third quadrant in the top view with respect to the origin; and while a side view of the LED light bulb is presented in another two dimensional coordinate system defining four quadrants with a Y′
-axis aligned with the stem, an X′
-axis crossing the Y′
-axis, and an origin, a brightness presented by a portion of the LED filament in the first quadrant in the side view is symmetric to a brightness presented by a portion of the LED filament in the second quadrant in the side view with respect to the Y′
-axis. - 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, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. An LED light bulb, comprising:
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a bulb shell; a bulb base connected with the bulb shell; two conductive supports disposed in the bulb shell; a stem extending from the bulb base to inside of the bulb shell; and an LED filament comprising; a plurality of LED chips arranged in an array along an elongated direction of the LED filament; and two conductive electrodes respectively disposed at two ends of the LED filament and connected to the LED chips, wherein the two conductive electrodes are respectively connected to the two conductive supports; wherein the LED filament is curled to satisfy symmetry characteristics in which; while a top view of the LED light bulb is presented in a two dimensional coordinate system defining four quadrants with a X-axis crossing the stem, a Y-axis crossing the stem, and an origin, a structure of a portion of the LED filament in the first quadrant in the top view is symmetric to a structure of a portion of the LED filament in the second quadrant in the top view with respect to the Y-axis and/or is symmetric to a structure of a portion of the LED filament in the third quadrant in the top view with respect to the origin; and while a side view of the LED light bulb is presented in another two dimensional coordinate system defining four quadrants with a Y′
-axis aligned with the stem, an X′
-axis crossing the Y′
-axis, and an origin, a structure of a portion of the LED filament in the first quadrant in the side view is symmetric to a structure of a portion of the LED filament in the second quadrant in the side view with respect to the Y′
-axis. - View Dependent Claims (37, 38, 39, 40, 41)
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42. An LED light bulb, comprising:
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a bulb shell; a bulb base connected with the bulb shell; two conductive supports disposed in the bulb shell; a stem extending from the bulb base to inside of the bulb shell; and an LED filament comprising; a plurality of LED chips arranged in an array along an elongated direction of the LED filament; and two conductive electrodes respectively disposed at two ends of the LED filament and connected to the LED chips, wherein the two conductive electrodes are respectively connected to the two conductive supports; wherein the LED filament is curled to satisfy symmetry characteristics in which; while a top view of the LED light bulb is presented in a two dimensional coordinate system defining four quadrants with a X-axis crossing the stem, Y-axis crossing the stem, and an origin, a length of a portion of the LED filament in the first quadrant in the top view is substantially equal to that of a portion of the LED filament in the second quadrant in the top view and/or is substantially equal to that of a portion of the LED filament in the third quadrant in the top view; and while a side view of the LED light bulb is presented in another two dimensional coordinate system defining four quadrants with a Y′
-axis aligned with the stem, an X′
-axis crossing the Y′
-axis, and an origin, a length of a portion of the LED filament in the first quadrant in the side view is substantially equal to that of a portion of the LED filament in the second quadrant in the side view. - View Dependent Claims (43, 44, 45)
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Specification
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Current AssigneeZhejiang Super Lighting Electric Appliance Company Limited
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Original AssigneeZhejiang Super Lighting Electric Appliance Company Limited
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InventorsJiang, Tao, Chen, Yi-Ching
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Primary Examiner(s)Harris, William N
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Application NumberUS15/858,036Publication NumberTime in Patent Office760 DaysField of SearchUS Class CurrentCPC Class CodesF21K 9/232 specially adapted for gener...F21V 15/04 Resilient mountings, e.g. s...F21Y 2107/00 Light sources with three-di...H05B 45/00 Circuit arrangements for op...H05B 45/10 Controlling the intensity o...
