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Large angle illuminated LED filament light bulb

專利號
US10868227B2
公開日期
2020-12-15
申請人
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
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.

說明書

Adding a thermal curing agent can lead to increased heat resistance and glass transition temperature. As shown in FIGS. 3, A1 and A2 represent the curves before and after adding the thermal curing agent, respectively; and the curves D1 and D2 represent the values after differential computation on curves A1 and A2, respectively, representing the extent of the change of curves A1 and A2. As can be seen from the analysis results from TMA (thermomechanical analysis) shown in FIG. 3, the addition of the thermal curing agent leads to a trend that the thermal deformation slows down. Accordingly, adding a thermal curing agent can lead to increase of the heat resistance.

權(quán)利要求

1
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