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公开(公告)号：US10757781B2
公开(公告)日：2020-08-25
申请号：US16368875
申请日：2019-03-29
发明人： Keith Hopwood , Hyung Jin Lee , Sung Ho Jin , Sang Wook Han , In Seok Baek
摘要： A lighting apparatus including an LED circuit including a plurality of serially connected stages configured to receive a modulated rectified voltage, each of the stages including a first path including a first resistor and a first LED connected in series, and a second path connected to the first path in parallel and including a second LED configured to emit light having a color temperature different from that emitted from the first LED, and a driving current controller configured to adjust an intensity of light output from the LED circuit by adjusting currents applied to driving nodes connected to the stages, depending on a dimming signal associated with a dimming level of the rectified voltage, in which a threshold voltage of the first LED is lower than that of the second LED.
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2.发明授权公开(公告)号：US10187945B2
公开(公告)日：2019-01-22
申请号：US15322005
申请日：2015-12-01
发明人： Young Do Jung , Sung Ho Jin , Sang Wook Han , Hye Man Jung
摘要： An alternating current sequential drive type LED lighting device having improved flicker performance and being capable of reducing the light output deviation of the LED lighting device generated during operation intervals by removing nonluminous intervals of the LED lighting device by means of a loop-back compensation unit.
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公开(公告)号：US10356865B2
公开(公告)日：2019-07-16
申请号：US16039345
申请日：2018-07-19
发明人： Kwang Bea Lim , Sung Ho Jin , Sang Wook Han , Young Do Jong
摘要： A lighting apparatus including a light emitting diode connected to a dimmer configured to modulate an input AC voltage depending on a selected dimming level, a rectifier configured to full-wave rectify the modulated AC voltage output from the dimmer to generate and output a driving voltage, a driving module configured to receive the driving voltage of the rectifier to detect the selected dimming level, and select one of three driving modes of a stop mode, a resistance driving mode, and a sequential driving mode depending on the detected dimming level, and a plurality of light emitting diode groups configured to emit light depending on a control of the driving module.
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公开(公告)号：US10342080B2
公开(公告)日：2019-07-02
申请号：US15847821
申请日：2017-12-19
发明人： Sung Ho Jin , Sang Wook Han , Hyung Jin Lee
IPC分类号： H05B33/08 , F21S2/00 , F28F3/02 , F28F3/08 , F21V29/71 , F21V29/80 , H01L23/367 , H01L23/498 , H01L25/065 , B23P15/26 , F21Y115/10
摘要： A light-emitting diode (LED) lighting apparatus including at least one LED group including a plurality of LEDs, a rectifier configured to rectify an alternating current (AC) voltage and generate a driving voltage for the at least one LED group, and a system-in-package (SIP) configured to drive and control the at least one LED group, in which the SIP is connected to the at least one LED group and the rectifier, and includes a driving module, a functional module, and a first resistor disposed on a single substrate.
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公开(公告)号：US09360165B2
公开(公告)日：2016-06-07
申请号：US14751532
申请日：2015-06-26
发明人： Sung Ho Jin
IPC分类号： F21K99/00 , F21V7/22 , F21V13/02 , F21V3/04 , F21V29/70 , F21V29/74 , F21V29/50 , F21Y105/00 , F21V3/00 , F21Y101/02
CPC分类号： F21K9/135 , F21K9/23 , F21K9/232 , F21K9/60 , F21K9/64 , F21V3/00 , F21V3/12 , F21V7/22 , F21V13/02 , F21V29/50 , F21V29/70 , F21V29/74 , F21Y2105/10 , F21Y2107/90 , F21Y2115/10
摘要： An exemplary embodiment discloses a light-emitting diode (LED) lamp including a heat sink including a first surface and a second surface, and a substrate including a first surface and a second surface. The substrate disposed on the heat sink and the first surface of the heat sink contacts the second surface of the substrate. The LED lamp also includes at least one first LED disposed on the first surface of the substrate and a transparent cover connected to the heat sink and spaced apart from the substrate. The second surface of the heat sink is adjacent to the first surface of the heat sink. The second surface of the heat sink extends toward the transparent cover. At the least an end point of the second surface of the heat sink is disposed over an outer region of edges of the substrate.
摘要翻译： 示例性实施例公开了一种包括散热器的发光二极管（LED）灯，其包括第一表面和第二表面，以及包括第一表面和第二表面的基板。 布置在散热器上的基板和散热片的第一表面接触基板的第二表面。 LED灯还包括设置在基板的第一表面上的至少一个第一LED和连接到散热器并与基板隔开的透明盖。 散热器的第二表面与散热器的第一表面相邻。 散热片的第二表面朝向透明盖延伸。 在散热器的第二表面的至少一个端点设置在衬底的边缘的外部区域上方。
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公开(公告)号：US11109461B2
公开(公告)日：2021-08-31
申请号：US16890271
申请日：2020-06-02
发明人： Keith Hopwood , Sung Ho Jin , Hyung Jin Lee , Sang Wook Han
IPC分类号： H05B45/395 , H05B45/20 , H05B45/44 , F21V23/04
摘要： An LED lighting apparatus capable of color temperature control includes a color temperature controller to receive a color temperature selection signal and output first and second control signals; a LED driver connected a plurality of LED groups; and a LED selection circuit including a first switch connected to a first node to which a rectified voltage is applied and receiving the first control signal, a first LED group selectively connected to the first node by the first switch, a second LED group connected in scales with the first LED group, a third LED group selectively connected to the first node by the first switch, a fourth LED group connected in series with the third LED group, and a second switch for selectively connecting the output terminal of the second LED group or the fourth LED group to the LED driver by receiving the second control signal.
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公开(公告)号：US20190053346A1
公开(公告)日：2019-02-14
申请号：US16044515
申请日：2018-07-25
发明人： Keith Hopwood , Sung Ho Jin , Hyung Jin Lee , Sang Wook Han
摘要： An LED lighting apparatus capable of color temperature control includes a color temperature controller to receive a color temperature selection signal and output first and second control signals; a LED driver connected a plurality of LED groups; and a LED selection circuit including a first switch connected to a first node to which a rectified voltage is applied and receiving the first control signal, a first LED group selectively connected to the first node by the first switch, a second LED group connected in series with the first LED group, a third LED group selectively connected to the first node by the first switch, a fourth LED group connected in series with the third LED group, and a second switch for selectively connecting the output terminal of the second LED group or the fourth LED group to the LED driver by receiving the second control signal.
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公开(公告)号：US10791597B2
公开(公告)日：2020-09-29
申请号：US16044515
申请日：2018-07-25
发明人： Keith Hopwood , Sung Ho Jin , Hyung Jin Lee , Sang Wook Han
摘要： An LED lighting apparatus capable of color temperature control includes a color temperature controller to receive a color temperature selection signal and output first and second control signals; a LED driver connected a plurality of LED groups; and a LED selection circuit including a first switch connected to a first node to which a rectified voltage is applied and receiving the first control signal, a first LED group selectively connected to the first node by the first switch, a second LED group connected in series with the first LED group, a third LED group selectively connected to the first node by the first switch, a fourth LED group connected in series with the third LED group, and a second switch for selectively connecting the output terminal of the second LED group or the fourth LED group to the LED driver by receiving the second control signal.
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公开(公告)号：US10362650B2
公开(公告)日：2019-07-23
申请号：US16039349
申请日：2018-07-19
发明人： Kwang Bea Lim , Sung Ho Jin , Sang Wook Han , Young Do Jong
摘要： A driving circuit for a light emitting diode connected to a TRIAC dimmer configured to modulate an input AC voltage depending on a selected dimming level including a rectifier configured to full-wave rectify the modulated AC voltage output from the TRIAC dimmer to generate and output a driving voltage, a driving module configured to receive the driving voltage of the rectifier to detect the selected dimming level and drive a plurality of light emitting diode groups depending on the detected dimming level, and a bleeder circuit configured to provide a bleeder current to the TRIAC dimmer, in which the bleeder circuit is configured to provide the bleeder current only for a preset on-duty time.
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10.发明授权公开(公告)号：US10244596B2
公开(公告)日：2019-03-26
申请号：US15519274
申请日：2015-10-14
发明人： Sung Ho Jin , Sang Wook Han , Young Do Jung , Hyung Jin Lee
IPC分类号： H05B33/08
摘要： Disclosed are a light emitting diode (LED) driver circuit having improved flicker performance and an alternating current-driving type LED lighting device including the same. The LED driver circuit can remove an LED off period using a charging and discharging circuit during a compensation period so as to reduce light output deviation of an LED lighting device, and provide a driving voltage to another element of the LED lighting device, using the charging and discharging circuit during an additional discharging period so as to simultaneously improve power efficiency.
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