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Large angle illuminated LED filament light bulb

專(zhuān)利號(hào)
US10868227B2
公開(kāi)日期
2020-12-15
申請(qǐng)人
JIAXING SUPER LIGHTING ELECTRIC APPLIANCE CO., LTD（CN Jiaxing）
發(fā)明人
Tao Jiang; Weihong Xu; Yukihiro Saito; Hayato Unagike; Aiming Xiong; Junfeng Xu; Yiching Chen
IPC分類(lèi)
H01L33/50; H01L33/62; F21K9/237; H01L25/075
技術(shù)領(lǐng)域
led,filament,in,polyimide,quadrant,bulb,symmetric,light,diamine,conductive
地域： Jiaxing

摘要

An LED light bulb, comprising: a lamp housing, a bulb base, connected with the lamp housing; a stem with a stand extending to the center of the lamp housing, disposed in the lamp housing; a single flexible LED filament, disposed in the lamp housing, points of the flexible LED filament in an xyz coordinates are defined as X, Y, and Z, an x-y plane of the xyz coordinates is perpendicular to the height direction of the light bulb, a z-axis of xyz coordinates is parallel with the stem, the filament is bent into spiral in an axial direction, the diameter of the outer spiral coil of the filament is large than the diameter of the intermediate spiral coil of the LED filament in the YZ plane.

說(shuō)明書(shū)

The tolerance can be defined as a difference in coordinates, i.e., x-coordinate or y-coordinate. For example, if there is a designated point on the first portion 100p1 of the LED filament 100 in the first quadrant and a symmetric point on the second portion 100p2 of the LED filament 100 in the second quadrant symmetric to the designated point with respect to the Y-axis, the absolute value of y-coordinate or the x-coordinate of the designated point may be equal to the absolute value of y-coordinate or the x-coordinate of the symmetric point or may have 20% difference comparing to the absolute value of y-coordinate or the x-coordinate of the symmetric point.

For example, as shown in FIG. 7D, a designated point (x1, y1) on the first portion 100p1 of the LED filament 100 in the first quadrant is defined as a first position, and a symmetric point (x2, y2) on the second portion 100p2 of the LED filament 100 in the second quadrant is defined as a second position. The second position of the symmetric point (x2, y2) is symmetric to the first position of the designated point (x1, y1) with respect to the Y-axis. The first position and the second position may be exactly symmetric or be symmetric with 20%-50% difference. In the embodiment, the first portion 100p1 and the second portion 100p2 are exactly symmetric in structure. In other words, x2 of the symmetric point (x2, y2) is equal to negative x1 of the designated point (x1, y1), and y2 of the symmetric point (x2, y2) is equal to y1 of the designated point (x1, y1).

權(quán)利要求

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