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公开(公告)号：US10978624B2
公开(公告)日：2021-04-13
申请号：US16595385
申请日：2019-10-07
发明人： Tao Jiang , Weihong Xu , Yukihiro Saito , Hayato Unagike , Aiming Xiong , Junfeng Xu , Yiching Chen
IPC分类号： H01L33/50 , H01L33/62 , F21K9/237 , H01L25/075
摘要： An LED light bulb, comprising: a lamp housing; a bulb base connected to the lamp housing; a stem connected to the bulb base and located in the lamp housing, the stem comprises a stand extending to the center of the lamp housing; a single LED filament, disposed in the lamp housing, the LED filament comprising: a plurality of LED sections, each of the LED sections includes at least two LED chips that are electrically connected to each other by a wire; a plurality of conductive sections, each of the conductive sections is located between the two adjacent LED sections and configured to electrically connect the two adjacent LED sections, each of the conductive section includes a conductor connecting the LED sections, and length of the wire being less than that of the conductor, the conductor comprises joint region and transition regions, the joint region is located between the transition regions and configured to connect the transition regions, each of the transition region has an opening, and the LED chip close to the conductor is disposed in the opening that has three sides opposite to the part of the conductor; two conductive supports, each of the two conductive supports connected with the stem and the flexible LED filament; a driving circuit, electrically connected with both the two conductive supports and the bulb base.
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公开(公告)号：US11121292B2
公开(公告)日：2021-09-14
申请号：US16576802
申请日：2019-09-20
发明人： Tao Jiang , Weihong Xu , Yukihiro Saito , Hayato Unagike , Aiming Xiong , Junfeng Xu , Yiching Chen
IPC分类号： H01L33/50 , F21K9/237 , H01L25/075 , H01L33/62
摘要： An LED light bulb, consisting of: a lamp housing doped with a golden yellow material or its surface coated with a yellow film; a bulb base connected to the lamp housing; a stem connected to the bulb base and located in the lamp housing, the stem comprises a stand extending to the center of the lamp housing; and a single LED filament, disposed in the lamp housing, the LED filament comprising: a light conversion layer, coated on at least two sides of the LED chip and the conductive electrodes, and a portion of each of the conductive electrodes is not coated with the light conversion layer, the light conversion layer has at least one top layer and one base layer, the top layer and the base layer are disposed on the opposing surface of the LED chip, wherein the top layer of the light conversion layer in the conductive section comprises a wavy concave structure with groove, the two adjacent grooves of the wavy concave structure have different width at the positions aligned in the axial direction of the LED filament.
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公开(公告)号：US10804446B2
公开(公告)日：2020-10-13
申请号：US16695223
申请日：2019-11-26
发明人： Tao Jiang , Weihong Xu , Yukihiro Saito , Hayato Unagiike , Aiming Xiong , Junfeng Xu , Yiching Chen
IPC分类号： H01L33/50 , H01L25/075 , F21K9/237 , H01L33/62
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, a spectral distribution of the light bulb is between wavelength range of about 400 nm to 800 nm, and three peak wavelengths P1, P2, P3 are appeared in the wavelength ranges corresponding to light emitted by the light bulb, the wavelength of the peak P1 is between 430 nm and 480 nm, the wavelength of the peak P2 is between 580 nm and 620 nm, and the wavelength of the peak P3 is between 680 nm and 750 nm, wherein a light intensity of the peak P1 is less than that of the peak P2, and the light intensity of the peak P2 is less than that of the peak P3.
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公开(公告)号：US10797208B2
公开(公告)日：2020-10-06
申请号：US16695217
申请日：2019-11-26
发明人： Tao Jiang , Weihong Xu , Yukihiro Saito , Hayato Unagiike , Aiming Xiong , Junfeng Xu , Yiching Chen
IPC分类号： H01L33/50 , H01L33/62 , H01L25/075 , F21K9/237
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, the flexible LED filament comprising: a plurality of LED sections, each of the LED sections includes at least two LED chips that are electrically connected to each other by a wire; a plurality of conductive sections comprising a conductor, located between the adjacent two LED sections; a light coversion layer disposing on the LED chip and at least two sides of the conductive electrodes and exposing a portion of the conductive electrodes, the light coversion layer is composed of at least one top layer and at least one base layer, where the top layer only cover the LED chip and the conductor completely and exposes a portion of the wire.
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公开(公告)号：US10790419B2
公开(公告)日：2020-09-29
申请号：US16479220
申请日：2018-12-26
发明人： Tao Jiang , Weihong Xu , Yukihiro Saito , Hayato Unagike , Aiming Xiong , Junfeng Xu , Yiching Chen
IPC分类号： H01L33/50 , H01L33/62 , H01L25/075 , F21K9/237
摘要： An LED filament comprises at least one LED section, a conductive section, two conductive electrodes and a light conversion layer. The conductive section is used to electrically connect two adjacent LED sections. The two conductive electrodes are electrically connected to each of the LED sections. Each of the LED sections includes at least two LED chips electrically connected to each other. The light conversion layer covers the LED sections, the conductive sections and the conductive electrodes, and a part of the two electrodes is exposed respectively. Since the LED filament includes the LED section and the conductive section, when the LED filament is bent, the stress is easily concentrated on the conductive section. Therefore, the breakage probability of the conductive wires connected within the LED section is reduced during bending. The quality of the LED filament and its application is improved.
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公开(公告)号：US11121293B2
公开(公告)日：2021-09-14
申请号：US16595401
申请日：2019-10-07
发明人： Tao Jiang , Weihong Xu , Yukihiro Saito , Hayato Unagike , Aiming Xiong , Junfeng Xu , Yiching Chen
IPC分类号： H01L33/50 , F21K9/237 , H01L25/075 , H01L33/62
摘要： An LED light bulb, consisting of: a lamp housing; a bulb base connected to the lamp housing; a stem connected to the bulb base and located in the lamp housing, a single LED filament, disposed in the lamp housing, the LED filament comprising: two conductive supports, each of the two conductive supports connected with the stem and the flexible LED filament; a driving circuit, electrically connected with both the two conductive supports and the bulb base; and a plurality of supporting arms, each of the supporting arms comprise a first end and a second end opposite to the first end of the supporting arms, the first end of each of the supporting arms is connected with the stand while the second end of each of the supporting arms is connected with the LED filament; where anodes of LED sections are electrically connected together to serve as a first positive electrode P1 and/or a second positive electrode P2 of the flexible LED filament, cathodes of LED section serve as a first negative electrode N1 and/or a second negative electrode N2, respectively, where the positive electrode P1 and/or the second positive electrode P2, the first negative electrode N1 and/or the second negative electrode N2 are separately electrically connected to the driving circuit through the conductive supports.
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公开(公告)号：US10944028B2
公开(公告)日：2021-03-09
申请号：US16576810
申请日：2019-09-20
发明人： Tao Jiang , Weihong Xu , Yukihiro Saito , Hayato Unagike , Aiming Xiong , Junfeng Xu , Yiching Chen
IPC分类号： H01L33/50 , H01L33/62 , H01L25/075 , F21K9/237
摘要： An LED light bulb, comprising of: a lamp housing; a bulb base connected to the lamp housing; a stem connected to the bulb base and located in the lamp housing, the stem comprises a stand extending to the center of the lamp housing; a single LED filament, disposed in the lamp housing, the LED filament comprising: a plurality of LED sections, each of the LED sections includes at least two LED chips that are electrically connected to each other; a plurality of conductive sections, each of the conductive sections is located between the two adjacent LED sections and configured to electrically connect the two adjacent LED sections, each of the conductive sections includes at least one conductor that connects the two adjacent LED sections, each of the conductor has at least one through hole; a light conversion layer comprising a base layer and a top layer, wherein the base layer of the light conversion layer is filled into the through hole of the conductor and then contacting the surface of the top layer.
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公开(公告)号：US10790420B2
公开(公告)日：2020-09-29
申请号：US16695212
申请日：2019-11-26
发明人： Tao Jiang , Weihong Xu , Yukihiro Saito , Hayato Unagiike , Aiming Xiong , Junfeng Xu , Yiching Chen
IPC分类号： H01L33/50 , F21K9/237 , H01L25/075 , H01L33/62
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, and the flexible LED filament comprising: two LED sections, each of the LED sections comprising a least one LED chip; one conductive section comprising a conductor, located between the adjacent two LED sections; two conductive electrodes, disposed corresponding to the two LED sections and electrically connected to the two LED sections, wherein 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, and the main bending points of the LED sections and the conductive electrodes are substantially on the circumference centered on the conductive section in the XY plane.
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公开(公告)号：US10804445B2
公开(公告)日：2020-10-13
申请号：US16666437
申请日：2019-10-29
发明人： Tao Jiang , Weihong Xu , Yukihiro Saito , Hayato Unagike , Aiming Xiong , Junfeng Xu , Yiching Chen
IPC分类号： H01L33/50 , F21K9/237 , H01L25/075 , H01L33/62
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, where the projection of the flexible LED filament on the XY plane, YZ plane and XZ plane respectively has a length L1, L2 and L3, the length L1, the length L2, and the length L3 are substantially in a ratio of 1:(0.5 to 1):(0.6 to 0.9).
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