Lighting fixtures

Abstract

To provide a lighting fixture that can expand a function of emitting light using power supplied by a USB connector.SOLUTION: A lighting fixture 1 includes a light source (main LED module 32 and night light LED module 33) consisting of a board on which light emitting means is mounted, a light source drive circuit (a dimming / toning circuit and a dimming circuit) that causes the light source to emit light using supplied DC power, a first power supply circuit (AC / DC circuit) that converts power from a commercial AC power supply voltage into DC power of a first voltage value (20 V) and supplies the converted power to the light source drive circuit, and a second power supply circuit (USB / PD power supply circuit) that converts the DC power supplied by a USB connector into a range from the first voltage value (20 V) to a second voltage value (5 V) lower than the first voltage value and supplies the converted power to the light source driving circuit.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to lighting fixtures such as ceiling lights using light-emitting means such as LEDs.

Background Art

[0002] Conventionally, in general, lighting fixtures such as ceiling lights using light-emitting means such as LEDs are widely used in general buildings such as single-family houses and apartment houses. Lighting fixtures such as ceiling lights usually receive power supply from a commercial power source through a fixture (wiring fixture) installed on the ceiling (fixture mounting surface), and are turned on / off etc. by operating a wall switch or by operating buttons of a remote controller (remote control) attached to the lighting fixture.

[0003] Here, when natural disasters such as earthquakes and typhoons occur or there are malfunctions in power generation facilities, resulting in the suspension of the supply of commercial power, or when an overcurrent occurs in a house and a safety breaker operates to cut off the power, a power outage occurs and the lighting fixture suddenly goes out. In particular, when a power outage occurs at night, one has to grope in the dark for a flashlight, lantern, or candle, and when a safety breaker etc. fails, one has to search for the switch on the distribution board.

[0004] In such a case, if the lighting fixture installed on the ceiling is equipped with a disaster prevention (emergency) lighting device that can be lit in an emergency, there is no need to search for a flashlight etc. in sudden darkness, and the uneasiness of people can be reduced.

[0005] Therefore, as a countermeasure against sudden power outages, lighting fixtures equipped with an emergency power source (battery) that lights up in an emergency are known. When this lighting fixture detects a power outage, it lights up by the power supply from the emergency power source (battery) and serves as an emergency light (Patent Document 1).

[0006] Patent Document 1 describes a lighting fixture comprising a flat body, a light source consisting of a substrate on which a plurality of LEDs are mounted and arranged on the front side of the body, a power supply board arranged on the light source, a battery that supplies power to the light source, a battery holder attached to the body that holds the battery in a removable manner, and a shade that covers the front side of the body, wherein the battery holder has an annular portion and legs on the lower surface of the annular portion that hold the battery, and the power supply board normally supplies power to the light source and the battery, and in the event of a power outage, supplies power from the battery to the light source. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2022-14901 [Overview of the project] [Problems that the invention aims to solve]

[0008] However, the lighting fixture described in Patent Document 1 is designed on the premise that power will be supplied from the battery to the light source using the standard USB standard (voltage 5V, maximum 15W or less). As a result, there are limitations on the power supplied from the battery to the light source, and when powered by battery, neither dimming nor color adjustment of the light source is possible; only the light source can be turned on / off using a remote controller.

[0009] The present invention aims to provide a lighting fixture that can expand the functionality when it emits light using power supplied by a USB connector. [Means for solving the problem]

[0010] The lighting fixture of the invention described in claim 1 is characterized by comprising: a light source consisting of a substrate on which light-emitting means are mounted; a light source driving circuit that causes the light source to emit light using supplied DC power; a first power supply circuit that converts power from a commercial AC power supply voltage into DC power of a first voltage value and supplies it to the light source driving circuit; and a second power supply circuit that converts DC power supplied by a USB connector into a range from the first voltage value to a second voltage value lower than the first voltage value and supplies it to the light source driving circuit.

[0011] The lighting fixture of the invention described in claim 2 comprises: a main light source consisting of a substrate on which a first light-emitting means is mounted; a main light source drive circuit that causes the main light source to emit light using supplied DC power; a secondary light source consisting of a substrate on which a second light-emitting means is mounted; a secondary light source drive circuit that causes the secondary light source to emit light using supplied DC power; a first power supply circuit that converts power from a commercial AC power supply voltage into DC power of a first voltage value; and a second power supply that converts and outputs DC power supplied by a USB connector within a range from the first voltage value to a second voltage value lower than the first voltage value. The device is characterized by comprising a power source circuit and a switching circuit that, when power from a commercial AC power supply voltage is supplied to the first power supply circuit, supplies power of a first voltage value from the first power supply circuit to the main light source drive circuit and the sub-light source drive circuit, and when power from a commercial AC power supply voltage is not supplied to the first power supply circuit and a DC power supply voltage of a predetermined power supply standard is supplied to the second power supply circuit from the USB connector, switches to supply power of a first voltage value from the second power supply circuit to the main light source drive circuit and the sub-light source drive circuit.

[0012] The lighting fixture of the invention described in claim 3 comprises: a main light source consisting of a substrate on which a first light-emitting means is mounted; a main light source drive circuit that causes the main light source to emit light using supplied DC power; a secondary light source consisting of a substrate on which a second light-emitting means is mounted; a secondary light source drive circuit that causes the secondary light source to emit light using supplied DC power; a first power supply circuit that converts power from a commercial AC power supply voltage into DC power of a first voltage value; a second power supply circuit that converts DC power supplied by a USB connector into a range from the first voltage value to a second voltage value lower than the first voltage value and outputs it; and when power from a commercial AC power supply voltage is supplied to the first power supply circuit, the first power supply circuit supplies power of the first voltage value to the main light source drive circuit and the secondary light source drive circuit, and commercial AC The power supply circuit is characterized in that, when power from a commercial AC power supply voltage is not supplied to the first power supply circuit and a DC power supply voltage of a first power supply standard is supplied to the second power supply circuit from the USB connector, it supplies power of the second voltage value from the second power supply circuit only to the sub-light source drive circuit among the main light source drive circuit and the sub-light source drive circuit, and when power from a commercial AC power supply voltage is not supplied to the first power supply circuit and a DC power supply voltage of a second power supply standard is supplied to the second power supply circuit from the USB connector, it switches to supply power of the first voltage value from the second power supply circuit to the main light source drive circuit and the sub-light source drive circuit, wherein the second power supply standard is a standard with a larger power supply capacity than the first power supply standard. [Effects of the Invention]

[0013] The lighting fixture of the present invention can extend the functionality when the light is emitted by power supplied via a USB connector. [Brief explanation of the drawing]

[0014] [Figure 1] This is an exploded perspective view showing a lighting fixture according to an embodiment of the present invention. [Figure 2] This is a perspective view showing an assembled lighting fixture according to an embodiment of the present invention. [Figure 3] This is a rear view showing a lighting fixture according to an embodiment of the present invention. [Figure 4] This is a circuit diagram showing the circuit configuration when power is supplied by the commercial AC power supply voltage of the lighting fixture according to an embodiment of the present invention. [Figure 5] This is a circuit diagram showing the circuit configuration when power is supplied by the standard USB specification of the lighting fixture according to an embodiment of the present invention. [Figure 6] This is a circuit diagram showing the circuit configuration when power is supplied by the USBPower Delivery specification of the lighting fixture according to an embodiment of the present invention.

Embodiments for Carrying Out the Invention

[0015] [Embodiments of the Present Invention] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0016] <Configuration of Embodiment> FIG. 1 is an exploded perspective view showing a lighting fixture according to an embodiment of the present invention. FIG. 2 is a perspective view of the assembled state showing the lighting fixture according to an embodiment of the present invention. FIG. 3 is a rear view showing the lighting fixture according to an embodiment of the present invention. FIG. 4 is a circuit diagram showing the circuit configuration when power is supplied by the commercial AC power supply voltage of the lighting fixture according to an embodiment of the present invention. FIG. 5 is a circuit diagram showing the circuit configuration when power is supplied by the standard USB specification of the lighting fixture according to an embodiment of the present invention. FIG. 6 is a circuit diagram showing the circuit configuration when power is supplied by the standard USBPower Delivery specification of the lighting fixture according to an embodiment of the present invention.

[0017] <Overall Configuration of Lighting Fixture> As shown in FIG. 1, in a general household, fixtures 7 such as a hook ceiling rose, a hook ceiling body, a hook ceiling, and a hook rose for attaching a ceiling light or the like are attached to the ceiling 6. The fixture 7 outputs commercial power and plays a role of connecting to the lighting fixture 1.

[0018] As shown in FIG. 1, the lighting fixture 1 according to an embodiment of the present invention is a ceiling light and is composed of a mounting adapter 2, a USB module 3, and a lamp shade 4.

[0019] The mounting adapter 2 is a member with a circular cross-section and has a pair of hanging brackets 22 and 23 on the upper surface of the main body 21. The hanging brackets 22 and 23 of the mounting adapter 3 are respectively fitted into the engagement grooves 72 and 73 on the lower surface of the main body 71 of the fixture 7 arranged on the ceiling 6 for mechanical connection and are also electrically connected to the commercial power supply.

[0020] The USB module 3 is attached with a main LED module 32 of a main light source composed of a donut-shaped substrate on which a plurality of first LEDs are mounted and a night light LED module 33 of a sub-light source composed of a disk-shaped substrate on which a plurality of second LEDs are mounted on the lower surface of a disk-shaped frame 31. The night light LED module 33 is arranged inside the donut shape of the main LED module 32.

[0021] Inside the disk-shaped frame 31, a control circuit 51, an AC / DC circuit 52, a USB / PD power supply circuit 53, a switch 54, a DC / DC circuit 55, an infrared receiver circuit 56, a dimming / color temperature adjustment circuit 57, and a dimming circuit 58 as shown in FIG. 4 are arranged.

[0022] As shown in FIG. 1, a USB type-C connector 35 is provided at the edge of the disk-shaped frame 31 via a connector stay 34. The periphery of the USB type-C connector 35 is covered with a phosphorescent material 36. The mounting adapter 2 is fixed to the back surface of the disk-shaped frame 31 by screwing.

[0023] The main LED module 32 and the night light LED module 33 are covered by a disk-shaped lamp shade 4 as shown in FIG. 2 when the lighting fixture 1 is assembled.

[0024] The USB type-C connector 35 is exposed outside from the lamp shade 4 as shown in FIG. 2 when the lighting fixture 1 is assembled.

[0025] As shown in Figure 3, the connector stay 34 is joined to the connector joint 37 provided on the disc-shaped frame 31 and is screwed in to screw holes 38 on the outer circumference of the disc-shaped frame 31. The connector 35 is connected to the cable connector 40 via the cable 39. The cable connector 40 is connected to the power input terminal of the USB / PD power supply circuit 53 shown in Figure 4.

[0026] Although only one connector stay 34 is shown in Figure 3, multiple stays are actually provided. The connector joints 37 and screw holes 38 located on all four sides of the disc-shaped frame 31 allow the user to change the mounting position of the USB type-C connector 35 themselves.

[0027] <Circuit configuration of lighting fixtures> Lighting fixture 1 includes a main LED module 32, a night light LED module 33, a control circuit 51, an AC / DC circuit 52, a USB / PD power supply circuit 53, a switch 54, a DC / DC circuit 55, a remote control light receiving circuit 56, a dimming / color adjustment circuit 57, and a dimming circuit 58.

[0028] The AC / DC circuit 52 is connected to a commercial AC power supply 41 and is a first power supply circuit that converts AC power (power from the commercial AC power supply voltage) into DC power (power from the DC power supply voltage) of a first voltage value (20V).

[0029] Furthermore, when AC power is supplied from the commercial AC power supply 41, the AC / DC circuit 52 generates a control signal a that causes the changeover switch 54 to perform a first switching selection and supplies it to the changeover switch 54.

[0030] The USB / PD power supply circuit 53 is connected to the USB power supply 42 via the USB type-C connector 35 and converts the DC power supplied by the USB type-C connector 35 from the first voltage value (20V) to a second voltage value (5V) lower than the first voltage value, outputting it as stable DC power.

[0031] In this embodiment, the USB power supply 42 can be a battery that provides power according to the standard USB standard (voltage 5V, maximum 15W or less), a high-capacity battery that provides power according to the USB Power Delivery standard (voltage 5-20V, maximum 100W or less), a high-capacity charger, etc.

[0032] Furthermore, when the voltage value of the DC power supplied from the USB power supply 42 is around 20V, the USB / PD power supply circuit 53 outputs stable DC power at a first voltage value (20V) from the power output terminal and generates a control signal b to cause the switch 54 to perform a first or second switching selection and supplies it to the switch 54. When the voltage value of the DC power supplied from the USB power supply 42 is around 5V, the USB / PD power supply circuit 53 outputs stable DC power at a second voltage value (5V) from the power output terminal and generates a control signal c to cause the switch 54 to perform a first or third switching selection and supplies it to the switch 54.

[0033] The switch 54 has a first input terminal P11 connected to the power output terminal of the AC / DC circuit 52, a second input terminal P12 connected to the power output terminal of the USB / PD power supply circuit 53, a first output terminal P21 connected to the power input terminal of the DC / DC circuit 55, a second output terminal P22 connected to the power input terminal of the dimming / color adjustment circuit 57, and a third output terminal P23 connected to the power input terminal of the dimming circuit 58.

[0034] When control signal a is supplied from the AC / DC circuit 52, the switch 54 performs the first switching selection shown in Figure 4, regardless of the control signal from the USB / PD power supply circuit 53, connecting the first input terminal P11 to the first to third output terminals P21, P22, and P23, while disconnecting the connection between the second input terminal P12 and the first to third output terminals P21, P22, and P23.

[0035] Furthermore, if control signal a is not supplied from the AC / DC circuit 52 but control signal b is supplied from the USB / PD power supply circuit 53, the switch 54 performs the second switching selection shown in Figure 5, connecting the second input terminal P12 to the first to third output terminals P21, P22, and P23, while disconnecting the connection between the first input terminal P11 and the first to third output terminals P21, P22, and P23.

[0036] Furthermore, if control signal a is not supplied from the AC / DC circuit 52 but control signal c is supplied from the USB / PD power supply circuit 53, the switch 54 performs the third switching selection shown in Figure 6, connecting the second input terminal P12 to the first to third output terminals P21 and P23, while disconnecting the connection between the second input terminal P12 and the second output terminal P22, and disconnecting the connection between the first input terminal P11 and the first to third output terminals P21, P22, and P23.

[0037] The DC / DC circuit 55 is connected to the output terminal P21 of the switch 54 and converts DC power in the range from a first voltage value (20V) from the output terminal P21 of the switch 54 to a second voltage value (5V) lower than the first voltage value into stable DC power at a third voltage value (3.3V) and supplies it to the power input terminal of the control circuit 51.

[0038] In this embodiment, 3.3V was used as the third voltage value output by the DC / DC circuit 55, but the third voltage value is not limited to 3.3V and can be applied in various ways depending on the circuit configuration.

[0039] The remote controller 5 is equipped with keys for power on / off, full LED illumination, night light illumination, and dimming / color adjustment, and generates infrared signals to emit light based on the operation of these keys. The remote control receiving circuit 56 receives infrared signals from the remote controller 5, converts the received infrared signals into electrical signals, and supplies them to the control circuit 51.

[0040] The control circuit 51 uses DC power from the output terminal P21 of the switch 54 to send instruction signals to the dimming / color adjustment circuit 57 for dimming such as turning on / off and dimming, and for adjusting the color temperature such as incandescent or daylight, based on the electrical signal from the remote control light receiving circuit 56, and also sends instruction signals to the dimming circuit 58 for dimming such as turning on / off and dimming.

[0041] The dimming / color tuning circuit 57 drives the first multiple LEDs of the main LED module 32 based on instruction signals from the control circuit 51, and performs dimming such as turning the main LED module 32 on / off and dimming, as well as color tuning such as incandescent color and daylight color.

[0042] The dimming circuit 58 drives a second set of LEDs in the night light LED module 33 based on instruction signals from the control circuit 51, and performs dimming such as turning the night light LED module 33 on / off and dimming.

[0043] <Operation of lighting fixtures> As shown in Figure 4, when AC power is supplied to the AC / DC circuit 52 from the commercial AC power supply 41 during normal use of the lighting fixture 1, the AC / DC circuit 52 supplies a control signal a to the switch 54 to perform a first switching selection. This causes the switch 54 to connect the first input terminal P11 to the first to third output terminals P21, P22, and P23 from the USB / PD power supply circuit 53, regardless of the control signal, while disconnecting the connection between the second input terminal P12 and the first to third output terminals P21, P22, and P23. As a result, DC power of a first voltage value (20V) from the AC / DC circuit 52 is supplied to the DC / DC circuit 55, the dimming / color adjustment circuit 57, and the dimming circuit 58. The main LED module 32 can be turned on / off and dimmed / color adjusted based on the operation of the remote controller 5, and the night light LED module 33 can be turned on / off and dimmed based on the operation of the remote controller 5.

[0044] As shown in Figure 5, in the event of a power outage, etc., AC power is not supplied to the AC / DC circuit 52 from the commercial AC power supply 41, and a battery or charger that supplies power according to the USB Power Delivery standard (voltage 5-20V, maximum 100W or less) is connected to the USB type-C connector 35 as the USB power supply 42, and a voltage of 20V according to the USB Power Delivery standard is supplied to the USB / PD power supply circuit 53, the USB / PD power supply circuit 53 supplies a control signal b to the switch 54 to make a second switching selection, so that the switch 54 connects the second input terminal P12 to the first to third output terminals P21, P22, and P23, while disconnecting the connection between the first input terminal P11 and the first to third output terminals P21, P22, and P23. In this state, a stable DC power of a first voltage value (20V) from the USB / PD power supply circuit 53 is supplied to the DC / DC circuit 55, the dimming / color adjustment circuit 57, and the dimming circuit 58. The main LED module 32 can be turned on / off and dimmed / color adjusted based on the operation of the remote controller 5, and the night light LED module 33 can be turned on / off and dimmed based on the operation of the remote controller 5.

[0045] As shown in Figure 6, in the event of a power outage, etc., AC power is not supplied to the AC / DC circuit 52 from the commercial AC power supply 41, and a battery or charger conforming to the standard USB specification (voltage 5V, maximum 15W or less) is connected to the USB type-C connector 35 as the USB power supply 42, and the USB / PD power supply circuit 53 is supplied with 5V voltage according to the standard USB specification, the USB / PD power supply circuit 53 supplies a control signal c to the switch 54 to make a third switching selection, so that the switch 54 connects the second input terminal P12 to the first and third output terminals P21 and P23, while disconnecting the connection between the second input terminal P12 and the second output terminal P22, and disconnecting the connection between the first input terminal P11 and the first to third output terminals P21, P22, and P23. In this state, a stable DC power of 5V from the USB / PD power supply circuit 53 is supplied to the DC / DC circuit 55 and the dimming circuit 58, while no power is supplied to the dimming / color tuning circuit 57. The main LED module 32 remains off, and the night light LED module 33 can be turned on / off and dimmed based on the operation of the remote controller 5.

[0046] <Configuration and Effects of the Embodiment> To summarize the configuration and effects of this embodiment, the lighting fixture 1 comprises a light source (main LED module 32 and night light LED module 33) consisting of a substrate on which light-emitting means (a first plurality of LEDs and a second plurality of LEDs) are mounted, a light source drive circuit (light / color tuning circuit 57 and dimming circuit 58) that causes the light source to emit light using supplied DC power, a first power supply circuit (AC / DC circuit 52) ​​that converts power from a commercial AC power supply voltage into DC power of a first voltage value (20V) and supplies it to the light source drive circuit, and a second power supply circuit (USB / PD power supply circuit 53) that converts DC power supplied by a USB connector (USB type-C connector 35) within a range from the first voltage value (20V) to a second voltage value (5V) lower than the first voltage value and supplies it to the light source drive circuit.

[0047] Furthermore, the lighting fixture 1 includes a main light source (main LED module 32) consisting of a substrate on which a first light-emitting means (a first set of LEDs) is mounted, a main light source drive circuit (light / color tuning circuit 57) that uses supplied DC power to make the main light source light up, a secondary light source (night light LED module 33) consisting of a substrate on which a second light-emitting means (a second set of LEDs) is mounted, a secondary light source drive circuit (dimming circuit 58) that uses supplied DC power to make the secondary light source light up, a first power supply circuit (AC / DC circuit 52) ​​that converts power from commercial AC power supply voltage into DC power of a first voltage value (20V), and a USB connector (USB TYPE-C The device is characterized by comprising: a second power supply circuit (USB / PD power supply circuit 53) that converts the DC power supplied by the connector 35) to a range of a second voltage value (5V) lower than the first voltage value, from a first voltage value (20V) to a second voltage value (5V), and a switching circuit (switcher 54) that switches to supply power of the first voltage value from the first power supply circuit to the main light source drive circuit and the sub-light source drive circuit when power from a commercial AC power supply voltage is supplied to the first power supply circuit, and to supply power of the first voltage value from the second power supply circuit to the main light source drive circuit and the sub-light source drive circuit when power from a commercial AC power supply voltage is not supplied to the first power supply circuit and a DC power supply voltage of a predetermined power supply standard (USB Power Delivery standard) is supplied to the second power supply circuit from the USB connector (USB TYPE-C connector 35).

[0048] Furthermore, the lighting fixture 1 includes a main light source (main LED module 32) consisting of a substrate on which a first light-emitting means (a first set of LEDs) is mounted, a main light source drive circuit (light / color tuning circuit 57) that uses supplied DC power to make the main light source light up, a secondary light source (night light LED module 33) consisting of a substrate on which a second light-emitting means (a second set of LEDs) is mounted, a secondary light source drive circuit (dimming circuit 58) that uses supplied DC power to make the secondary light source light up, a first power supply circuit (AC / DC circuit 52) ​​that converts power from commercial AC power supply voltage into DC power of a first voltage value (20V), and a USB connector (USB TYPE-C A second power supply circuit (USB / PD power supply circuit 53) converts the DC power supplied by the connector 35) to a range from the first voltage value (20V) to a second voltage value (5V) lower than the first voltage value and outputs it; when power from a commercial AC power supply voltage is supplied to the first power supply circuit, the power of the first voltage value from the first power supply circuit is supplied to the main light source drive circuit and the sub-light source drive circuit; when power from a commercial AC power supply voltage is not supplied to the first power supply circuit and a DC power supply voltage of the first power supply standard (standard USB standard) is supplied to the second power supply circuit, the power of the second voltage value from the second power supply circuit is supplied to the main light source drive circuit and the sub-light source drive circuit only; when power from a commercial AC power supply voltage is not supplied to the first power supply circuit and a DC power supply voltage of the first power supply standard (standard USB standard) is supplied from the USB connector (USB TYPE-C connector 35), the power of the second voltage value from the second power supply circuit is supplied only to the sub-light source drive circuit; when power from a commercial AC power supply voltage is not supplied to the first power supply circuit and a DC power supply voltage of the first power supply standard (standard USB standard) is supplied from the USB connector (USB TYPE-C connector 35), the power of the second power supply standard (standard USB standard) is supplied from the USB connector (USB TYPE-C connector 35). When a DC power supply voltage according to the Delivery standard is supplied to the second power supply circuit, the system includes a switching circuit (switch 54) that switches to supply power of a first voltage value from the second power supply circuit to the main light source drive circuit and the sub-light source drive circuit, wherein the second power supply standard is a standard with a larger power supply capacity than the first power supply standard.

[0049] Because of this configuration, the lighting fixture 1 of this embodiment can obtain power equivalent to the DC power of a first voltage value obtained from power from a commercial AC power supply voltage from DC power supplied via a USB connector (USB type-C connector 35). Therefore, even in the event of a power outage, the range of light emission control for the light source (main LED module 32 and night light LED module 33) is expanded, and the functionality when emitting light using power supplied via the USB connector can be extended.

[0050] <Modified examples of embodiments> In this modified lighting fixture, the night light LED module 33 and dimming circuit 58 are excluded from the lighting fixture 1 shown in Figures 1 to 6. In the event of a power outage, etc., AC power is not supplied to the AC / DC circuit 52 from the commercial AC power supply 41. If a battery or charger conforming to the standard USB specification (voltage 5V, maximum 15W or less) is connected to the USB type-C connector 35 as the USB power supply 42, and the USB / PD power supply circuit 53 is supplied with 5V according to the standard USB specification, then DC power from the USB / PD power supply circuit 53 is supplied to the DC / DC circuit 55 and the dimming / color adjustment circuit 57, and the dimming / color adjustment circuit 57 illuminates the main LED module 32 at a low level.

[0051] The configuration of other modified examples is the same as that of lighting fixture 1 shown in Figures 1 to 6. With these modifications, similar to the lighting fixture 1 shown in Figures 1 to 6, the range of light emission control for the light source (main LED module 32) is broadened, and the functionality when emitting light using power supplied by the USB connector can be expanded.

[0052] In the embodiments of the lighting fixtures shown in Figures 1 to 6 and their modified versions, a USB Type-C connector was used as the USB connector, but other USB connector standards, such as Micro USB 2.0, may also be used.

[0053] Furthermore, in the embodiments of the lighting fixtures and their modifications shown in Figures 1 to 6, batteries that provide power using the standard USB standard (voltage 5V, maximum 15W or less) and high-capacity batteries and chargers that provide power using the USB Power Delivery standard (voltage 5-20V, maximum 100W or less) are applicable. However, it is also possible to apply these to power supply methods using USB standards that will be developed in the future.

[0054] Furthermore, while a first set of multiple LEDs and a second set of multiple LEDs were used as the light-emitting means, various other light-emitting means such as incandescent bulbs and discharge lamps can be applied.

[0055] Furthermore, the mounting adapter 2, USB module 3, and lampshade 4 are not limited to a disc shape; various shapes such as box-shaped or spherical are also applicable.

[0056] Furthermore, instead of configuring each means as a separate entity, they may be configured as means that integrate multiple functions.

[0057] Furthermore, the above embodiments and their variations are merely the best possible forms or near-best forms currently available.

[0058] <Definition, etc.> The USB connector in this invention may be any type that is capable of supplying DC power. [Explanation of Symbols]

[0059] 1: Lighting fixture 2: Mounting adapter 3: USB module 4: Lampshade 5: Remote controller 6: Ceiling 7: Mounting hardware 21: Main unit 22, 23: Hook bracket 31: Frame 32: Main LED module 33: Night light LED module 34: Connector stay 35: USB type-C connector 36: Luminous material 37: Connector joint 38: Screw hole 39: Cable 40: Cable connector 41: Commercial AC power supply 42: USB power supply 51: Control circuit 52: AC / DC circuit 53: USB / PD power supply circuit 54: Switch 55: DC / DC circuit 56: Remote control light receiving circuit 57: Dimming / color adjustment circuit 58: Dimming circuit 71: Main unit 72, 73: Engagement groove P11: First input terminal P12: Second input terminal P21: First output terminal P22: Second output terminal P23 : Third output terminal

Claims

[Claim 1] A main light source consisting of a substrate on which a first light-emitting means is mounted, A main light source drive circuit that uses supplied DC power to cause the main light source to emit light, A secondary light source consisting of a substrate on which a second light-emitting means is mounted, A secondary light source driving circuit that uses supplied DC power to cause the secondary light source to emit light, A first power supply circuit that converts power from a commercial AC power supply voltage into DC power of a first voltage value, A second power supply circuit that converts the DC power supplied by the USB connector to a range of voltage values ​​from the first voltage value to a second voltage value lower than the first voltage value and outputs it, A switching circuit that switches to supply power of a first voltage value from the first power circuit to the main light source drive circuit and the sub-light source drive circuit when power from a commercial AC power supply voltage is supplied to the first power circuit, and when power from a commercial AC power supply voltage is not supplied to the first power circuit and a DC power supply voltage of a first power supply standard is supplied to the second power circuit from the USB connector, and when power from a commercial AC power supply voltage is not supplied to the first power circuit and a DC power supply voltage of a second power supply standard is supplied to the second power circuit from the USB connector, and when power from a commercial AC power supply voltage is not supplied to the first power circuit and a DC power supply voltage of a second power supply standard is supplied to the second power circuit, supplies power of a first voltage value from the second power circuit to the main light source drive circuit and the sub-light source drive circuit, Equipped with, A lighting fixture characterized in that the second power supply standard has a larger power supply capacity than the first power supply standard.

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