# US 2019/0168660 A1 · Sequential lighting device and method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0168660 A1 - Document ID: US20190168660A1 - Status: Published application - Kind: A1 - Application number: 16/159,014 - Filed: 2018-10-12 - Published: 2019-06-06 - Earliest claimed: 2017-12-05 - Assignees: Hyundai Motor Company; Kia Motors Corporation - Applicants: Hyundai Motor Company; Kia Motors Corporation - Inventors: Jin-Ho NA; Dong-Jin Park; Seung-Jin Lee; Gwon-Hak Lee; Jung-Bin Kim; Sung-Uk Choi - Web page: https://patentgrep.com/patent/US20190168660A1 ## CPC - H05B 45/10: Controlling the intensity of the light - B60Q 1/381: {with several light sources activated in sequence, e.g. to create a sweep effect} - F21S 43/13: characterised by the type of light source - H05B 47/155: Coordinated control of two or more light sources - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - B60Q: ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS ## Abstract A sequential lighting device may include a power supply device configured for supplying the input power of a predetermined waveform, a sequential control circuit, which is an analog circuit, sequentially operated depending upon the input power to generate a sequential operation signal, and a switching circuit for turning on or off a plurality of light sources of a lamp module depending upon the sequential operation signal. ## Claims ### Claim 1 A sequential lighting device, comprising: a power supply device configured for supplying an input power having a predetermined waveform; a sequential control circuit, which is an analog circuit and connected to the power supply device wherein the sequential control circuit is sequentially operated depending upon the input power to generate a sequential operation signal; and a switching circuit connected to the sequential control circuit and a plurality of light sources of a lamp module, wherein the switching circuit is configured for turning on or off the plurality of light sources of the lamp module according to the sequential operation signal received from the sequential control circuit. ### Claim 2 (depends on 1) The sequential lighting device of claim 1, wherein the predetermined waveform is a saw tooth waveform having an OFF period during which no input power is supplied and a rising period during which the input power rises, as one cycle. ### Claim 3 (depends on 2) The sequential lighting device of claim 2, wherein the predetermined waveform further includes a stable period that maintains a maximum input power during a predetermined time until a next cycle is performed. ### Claim 4 (depends on 2) The sequential lighting device of claim 2, wherein the rising period utilizes sequential voltage breakdown. ### Claim 5 (depends on 1) The sequential lighting device of claim 1, wherein the sequential control circuit is a zener diode set including a plurality of zener diodes which is connected in parallel and has different breakdown voltages, respectively. ### Claim 6 (depends on 2) The sequential lighting device of claim 2, wherein the one cycle is less than 200 ms. ### Claim 7 (depends on 1) The sequential lighting device of claim 1, wherein the switching circuit has a plurality of switching elements connected in parallel, and each of the switching elements is one of a Field Effect Transistor (FET), a Metal Oxide Semiconductor FET (MOSFET), an Insulated Gate Bipolar Mode Transistor (IGBT), a Gate Turn-Off (GTO), and an Integrated Circuit (IC). ### Claim 8 (depends on 1) The sequential lighting device of claim 1, wherein the power supply device utilizes a separate power or a vehicle power. ### Claim 9 (depends on 1) The sequential lighting device of claim 1, wherein the predetermined waveform is configured to be changed for changing a lighting mode from upon operation of a turn signal to upon operation of an emergency light. ### Claim 10 (depends on 1) The sequential lighting device of claim 1, wherein a plurality of light source groups is connected in parallel, and each of the plurality of light source groups includes the plurality of light sources connected in series, and wherein each of the light sources is one of a Light Emitting Diode (LED), an Organic LED (OLED), a Carbon NanoTube (CNT), and an Ultra Constant Discharge Lamp (UCD). ### Claim 11 A sequential lighting method, comprising: supplying, by a power supply device, an input power having a predetermined waveform; generating a sequential operation signal, by a sequential control circuit, which is an analog circuit and operated sequentially depending upon the input power; and turning, by a switching circuit, on or off a plurality of light sources of a lamp module depending upon the sequential operation signal. ### Claim 12 (depends on 11) The sequential lighting method of claim 11, wherein the predetermined waveform includes a saw tooth waveform having an OFF period that no input power is supplied and a rising period that the input power rises, as one cycle. ### Claim 13 (depends on 12) The sequential lighting method of claim 12, wherein the predetermined waveform further includes a stable period that maintains a maximum input power during a predetermined time until a next cycle is performed. ### Claim 14 (depends on 12) The sequential lighting method of claim 12, wherein the rising period utilizes sequential voltage breakdown. ### Claim 15 (depends on 11) The sequential lighting method of claim 11, wherein the sequential control circuit is a zener diode set including a plurality of zener diodes which is connected in parallel and has different breakdown voltages, respectively. ### Claim 16 (depends on 12) The sequential lighting method of claim 12, wherein the one cycle is less than 200 ms. ### Claim 17 (depends on 11) The sequential lighting method of claim 11, wherein the switching circuit has a plurality of switching elements connected in parallel, and wherein each of the switching elements is one of a Field Effect Transistor (FET), a Metal Oxide Semiconductor FET (MOSFET), an Insulated Gate Bipolar Mode Transistor (IGBT), a Gate Turn-Off (GTO), and an Integrated Circuit (IC). ### Claim 18 (depends on 11) The sequential lighting method of claim 11, wherein the power supply device utilizes a separate power or a vehicle power. ### Claim 19 (depends on 11) The sequential lighting method of claim 11, wherein the predetermined waveform is changed for changing a lighting mode from upon operation of a turn signal to upon operation of an emergency light. ### Claim 20 (depends on 11) The sequential lighting method of claim 11, wherein a plurality of light source groups is connected in parallel, and each of the plurality of light source groups have the plurality of light sources connected in series, respectively, and wherein each of the light sources is one of a Light Emitting Diode (LED), an Organic LED (OLED), a Carbon NanoTube (CNT), and an Ultra Constant Discharge Lamp (UCD).