Pendant lamp

Abstract

To provide a pendant light that has a wireless function.SOLUTION: A pendant light 1 includes: a power supply unit 10 freely detachably installed in a ceiling 2; a light source part 20; and a cable part 30 for connecting between the power supply unit 10 and the light source part 20 and holding the light source part 20 at a predetermined height on a lower side of the ceiling 2. The power supply unit 10 includes: a power supply circuit 41 for supplying power to the light source part 20 via the cable part 30; and a radio circuit 42 for acquiring information for controlling the power supply circuit 41.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a pendant lamp. [Background technology]

[0002] Patent Document 1 discloses a pendant lamp in which an LED (Light Emitting Diode) bulb is suspended from the ceiling. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3210959 Summary of the Invention [Problem to be solved by the invention]

[0004] SUMMARY OF THE INVENTION The present invention aims to provide a pendant lamp with wireless functionality. [Means for solving the problem]

[0005] A pendant lamp according to one aspect of the present invention includes a power supply unit detachably installed on a ceiling, a first light source unit, and a cable unit connecting the power supply unit and the first light source unit and holding the first light source unit at a predetermined height below the ceiling. The power supply unit includes a power supply circuit that supplies power to the first light source unit via the cable unit, and a wireless circuit that acquires information for controlling the power supply circuit. [Effects of the Invention]

[0006] According to the present invention, a pendant lamp having a wireless function can be provided. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is an external perspective view of a pendant lamp according to a first embodiment. [Figure 2] FIG. 2 is a diagram showing the configuration of the pendant lamp according to the first embodiment. [Figure 3] FIG. 3 is a diagram showing the configuration of a pendant lamp according to the second embodiment. [Figure 4A] FIG. 4A is a diagram showing a first example of illumination using a pendant lamp according to the second embodiment. [Figure 4B] FIG. 4B is a diagram showing a second example of illumination by the pendant lamp according to the second embodiment. [Figure 4C] FIG. 4C is a diagram showing a third example of illumination using the pendant lamp according to the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] Below, a pendant lamp according to an embodiment of the present invention will be described in detail with reference to the drawings. Note that each of the embodiments described below represents a specific example of the present invention. Therefore, the numerical values, shapes, materials, components, component arrangements and connection forms, steps, and step sequences shown in the following embodiments are merely examples and are not intended to limit the present invention. Therefore, among the components in the following embodiments, components not recited in the independent claims will be described as optional components.

[0009] Furthermore, each figure is a schematic diagram and is not necessarily an exact illustration. Therefore, for example, the scales of the figures do not necessarily match. Furthermore, in each figure, substantially the same components are given the same reference numerals, and redundant explanations are omitted or simplified.

[0010] Furthermore, in this specification, terms indicating the relationship between elements, terms indicating the shape of elements, and numerical ranges are not expressions that express only strict meanings, but are expressions that mean that they also include a substantially equivalent range, for example, a difference of about a few percent.

[0011] Furthermore, in this specification, ordinal numbers such as "first" and "second" do not refer to the number or order of components unless otherwise specified, but are used for the purpose of avoiding confusion and distinguishing between components of the same type.

[0012] (Embodiment 1) [composition] First, the configuration of the pendant lamp according to the first embodiment will be described with reference to Fig. 1 and Fig. 2. Fig. 1 is an external perspective view showing the pendant lamp 1 according to the present embodiment. Fig. 2 is a diagram showing the configuration of the pendant lamp 1 according to the present embodiment.

[0013] The pendant lamp 1 shown in Fig. 1 is a lighting device that is fixed to a ceiling 2 and used while suspended from the ceiling 2. The pendant lamp 1 is detachably attached to a fixture body 3 provided on the ceiling 2.

[0014] The term "detachable" means that the pendant lamp 1 can be attached and detached without disassembly or assembly. Specifically, by simply inserting the power supply unit 10 shown in Fig. 1 into the recess of the fixture body 3 by hand and rotating it horizontally, the conductive pin 12 (see Fig. 2) engages and is fixed in the power socket (not shown) of the fixture body 3. In this way, the pendant lamp 1 can be easily attached and detached.

[0015] As shown in FIG. 1, the pendant lamp 1 includes a power supply unit 10, a light source unit 20, and a cable unit 30.

[0016] The power supply unit 10 is detachably installed on the ceiling 2. Specifically, the power supply unit 10 is fixed to the ceiling 2 by inserting a conductive pin 12 shown in FIG. 2 into a power supply socket (not shown) of the fixture body 3 provided on the ceiling 2. The fixture body 3 is recessed into the ceiling 2. The power supply socket of the fixture body 3 receives AC power (for example, power from an AC 100V commercial power source).

[0017] 2, the power supply unit 10 includes a housing 11 and conductive pins 12. The power supply unit 10 also includes a power supply circuit 41 and a wireless circuit 42. Note that in FIG. 2, the power supply circuit 41 and the wireless circuit 42 are illustrated schematically as functional components.

[0018] The housing 11 houses the power supply circuit 41 and the wireless circuit 42. The housing 11 has, for example, a flat shape. Note that "flat shape" means a shape in which the height (for example, the maximum vertical length) is shorter than the width (for example, the maximum horizontal length). The housing 11 can be accommodated in a recess in the fixture body 3 and arranged so as not to protrude from the underside (ceiling surface) of the ceiling 2. The cable part 30 is fixed to the housing 11 so as to extend downward from the underside. The outer size of the housing 11 is, for example, φ70 mm.

[0019] The housing 11 is made of a resin material such as polybutylene terephthalate (PBT) or a metal material such as aluminum. In this embodiment, the housing 11 is an insulating housing made of PBT. This makes it easier to ensure the insulation of the power supply circuit 41. In other words, the housing 11 is an outer cover that forms the outer shell of the power supply unit 10, and also an insulating cover that covers the power supply circuit 41.

[0020] The conductive pins 12 protrude outside the housing 11. Specifically, the conductive pins 12 protrude upward from the top surface of the housing 11 (the surface opposite to the light source unit 20). In this embodiment, a pair (two) of conductive pins 12 is provided. The pair of conductive pins 12 has a Gx53 base structure. The pair of conductive pins 12 are inserted into and fixed in a power supply socket of the fixture body 3. Specifically, after the pair of conductive pins 12 are inserted into the power supply socket, the housing 11 is rotated horizontally about its center as an axis, whereby the pair of conductive pins 12 engage and are fixed in the power supply socket. By fixing the pair of conductive pins 12 to the power supply socket, AC power is supplied from the power supply socket to the pair of conductive pins 12. Furthermore, by holding the pair of conductive pins 12 in the power supply socket, the pendant lamp 1 is attached to and held in the fixture body 3.

[0021] The light source unit 20 is an example of a first light source unit. The light source unit 20 is held by the cable unit 30 and fixed to the power supply unit 10. The light source unit 20 emits light upon receiving DC power supplied via the cable unit 30. The DC power is power generated by a power supply circuit 41 of the power supply unit 10. The light source unit 20 does not have a power supply circuit. Although not shown, the light source unit 20 includes, for example, a light-emitting module and a housing that supports the light-emitting module.

[0022] The light-emitting module includes, for example, a substrate and a plurality of light-emitting elements mounted on a main surface of the substrate. The substrate is provided with metal wiring that electrically connects the plurality of light-emitting elements. The light-emitting elements are, for example, but not limited to, LED (Light Emitting Diode) elements. The light-emitting module emits, for example, white light.

[0023] The plurality of light-emitting elements may include light-emitting elements that emit light of different color temperatures. For example, the plurality of light-emitting elements may include light-emitting elements with a high color temperature (e.g., 6500 K) and light-emitting elements with a low color temperature (e.g., 2700 K). Color adjustment is possible by adjusting the on / off and light emission intensity of each light-emitting element or each group of color temperatures.

[0024] The housing is an outer housing of the light source unit 20. The housing may include a light-transmitting member that transmits light from the light-emitting module. The light-transmitting member may be, for example, a lens that condenses or diverges light, a transparent cover, or a diffusion cover. The housing may also include a removable shade or decorative member.

[0025] 1 and 2 show an example in which the housing has a flat shape, but is not limited to this. The housing may have a shape such as a light bulb shape or a shape with multiple arms like a chandelier.

[0026] The cable unit 30 connects the power supply unit 10 and the light source unit 20, and holds the light source unit 20 at a predetermined height below the ceiling 2. The cable unit 30 is electrically connected to a power supply circuit 41 of the power supply unit 10 and the light-emitting module of the light source unit 20, and supplies DC power generated by the power supply circuit 41 to the light source unit 20. In this way, the cable unit 30 has two functions: supplying power to the light source unit 20 and holding it in place.

[0027] The cable unit 30 includes, for example, a cylindrical cover formed using an insulating material and metal wiring arranged inside the cover. The metal wiring is used to supply power from the power supply circuit 41 to the light source unit 20. The cable unit 30 does not need to include metal wiring for transmitting and receiving control signals.

[0028] The power supply circuit 41 supplies power to the light source unit 20 via the cable unit 30. Specifically, the power supply circuit 41 generates power for causing the light source unit 20 to emit light. For example, the power supply circuit 41 converts AC power supplied from the pair of conductive pins 12 into DC power, and supplies the DC power to the light source unit 20 via the cable unit 30.

[0029] For example, the power supply circuit 41 includes a circuit board and a plurality of circuit elements mounted on the circuit board. The circuit board is, for example, a printed circuit board (PCB) on which metal wiring such as copper foil is patterned. The plurality of circuit elements are, for example, capacitive elements such as electrolytic capacitors or ceramic capacitors, coil elements (inductors) such as choke coils or choke transformers, transistor elements such as FETs (Field Effect Transistors), resistive elements such as resistors, or diodes. The circuit elements may be lead components or surface-mountable chip components.

[0030] The power supply circuit 41 may include at least one of a dimming circuit that adjusts the brightness of the light source unit 20 and a color adjustment circuit that adjusts the color of the light source unit 20. For example, the power supply circuit 41 adjusts the brightness or color of the light source unit 20 based on information acquired by the wireless circuit 42.

[0031] The wireless circuit 42 acquires control information for controlling the power supply circuit 41. The control information includes, for example, an instruction to turn on and off the light source unit 20 and / or an instruction to adjust the brightness or color.

[0032] As shown in FIG. 2, the wireless circuit 42 includes an infrared acquisition unit 42a and a radio wave communication unit 42b.

[0033] The infrared acquisition unit 42a is an example of a first acquisition unit that acquires control information via infrared rays. The infrared acquisition unit 42a includes, for example, a light receiving element that receives infrared rays and a signal processing circuit that processes a signal output from the light receiving element. The light receiving element is, for example, a photoelectric conversion element that is sensitive to the infrared wavelength band. The signal processing circuit includes a capacitive element, a coil element, a transistor element, a resistive element, a diode, or an integrated circuit (IC). The signal processing circuit may include, for example, a microcontroller.

[0034] The infrared acquisition unit 42a receives, for example, an infrared signal emitted by a remote controller, which is an operating terminal for the pendant lamp 1. The infrared signal includes control information, such as instructions to turn the pendant lamp 1 on or off, or to adjust the brightness or color of the pendant lamp 1. Alternatively, the infrared acquisition unit 42a may receive infrared rays based on heat emitted by a person. That is, the infrared acquisition unit 42a may be a so-called human presence sensor, which acquires information indicating the presence or absence of a person as control information via infrared rays. This allows, for example, the light source unit 20 to be turned on when a person is present within the detection range of the infrared acquisition unit 42a, and the light source unit 20 to be turned off when no person is present.

[0035] The radio wave communication unit 42b is an example of a second acquisition unit that acquires control information through radio wave communication. The radio wave communication unit 42b communicates via radio waves (i.e., radio wave communication) with, for example, a mobile terminal such as a smartphone that functions as an operation terminal for the pendant lamp 1. The communication is performed based on a wireless communication standard such as Wi-Fi (registered trademark), Bluetooth (registered trademark), or ZigBee (registered trademark). The radio wave communication unit 42b includes an antenna that receives radio waves and a signal processing circuit that processes the radio waves (wireless signals) received by the antenna. The signal processing circuit includes a capacitive element, a coil element, a transistor element, a resistive element, a diode, an integrated circuit (IC), or the like. The signal processing circuit may include a microcontroller, for example.

[0036] The infrared acquisition unit 42a and the radio wave communication unit 42b are each provided on a board different from the circuit board of the power supply circuit 41. This makes it possible to suppress the influence of heat generated by the power supply circuit 41, thereby reducing the possibility of malfunction and failure.

[0037] At least a portion of each of the infrared acquisition unit 42a and the radio wave communication unit 42b may be formed on the circuit board of the power supply circuit 41. By using the same circuit board for both, the number of components can be reduced, which can contribute to making the power supply unit 10 smaller and lighter.

[0038] [Effects, etc.] As described above, the pendant lamp 1 according to this embodiment includes the power supply unit 10 that is detachably installed on the ceiling 2, the light source unit 20, and the cable unit 30 that connects the power supply unit 10 and the light source unit 20 and holds the light source unit 20 at a predetermined height below the ceiling 2. The power supply unit 10 includes a power supply circuit 41 that supplies power to the light source unit 20 via the cable unit 30, and a wireless circuit 42 that acquires information for controlling the power supply circuit 41.

[0039] This makes it possible to realize a pendant lamp 1 with wireless functionality. The wireless circuit 42 is included in the power supply unit 10, which is separate from the light source unit 20. This makes it possible to suppress the effects of heat generated by the light source unit 20, and to prevent malfunctions and failures of the wireless functionality.

[0040] Placing the heat-sensitive wireless circuit 42 away from the light source unit 20 also facilitates the heat dissipation design of the light source unit 20. For example, it becomes possible to reduce the size of the heat sink, which also makes it possible to reduce the weight of the light source unit 20, making it more useful for pendant lamps 1 that have a structure in which the cable unit 30 must support the weight of the light source unit 20.

[0041] Furthermore, because both the power supply circuit 41 and the radio circuit 42 are included in the power supply unit 10, it is sufficient that wiring for supplying power is provided within the cable unit 30, and wiring for transmitting and receiving control signals is not required. This makes it possible to reduce the weight of the cable unit 30. Alternatively, instead of reducing the wiring, a thick cover or the like can be used to increase the strength of the cable unit 30.

[0042] Furthermore, for example, power supply unit 10 includes housing 11 that houses power supply circuit 41 and radio circuit 42, and conductive pin 12 that protrudes to the outside of housing 11. Power supply unit 10 is fixed to ceiling 2 by inserting conductive pin 12 into a power supply socket provided in ceiling 2.

[0043] This allows the pendant lamp 1 to be easily attached and detached using the conductive pin 12, without the need for complicated work such as disassembly or assembly. For example, a general user can easily replace the lamp. By using a general structure such as a Gx53 base, it can also be attached to existing downlight fixtures, for example. In this case, the power supply unit 10 can be recessed into the ceiling 2, allowing the ceiling 2 to be kept neat and tidy.

[0044] Moreover, for example, the wireless circuit 42 includes an infrared acquisition unit 42a that acquires information via infrared rays.

[0045] As a result, the infrared acquisition unit 42a is disposed in the power supply unit 10 close to the ceiling 2, so that a wide infrared detection range can be ensured.

[0046] Furthermore, for example, the wireless circuit 42 includes a radio wave communication unit 42b that acquires information through radio wave communication.

[0047] This ensures a wide communication range for the radio wave communication unit 42b. For example, a metal heat sink is often used for heat dissipation in the light source unit 20. Because a metal heat sink blocks radio waves, providing an antenna on the light source unit 20 may limit the communication range.

[0048] In the present embodiment, an example has been shown in which the wireless circuit 42 includes both the infrared acquisition unit 42a and the radio wave communication unit 42b, but it may include only one of them.

[0049] (Embodiment 2) Next, a second embodiment will be described.

[0050] The pendant lamp according to embodiment 2 differs from embodiment 1 in that a light source is also provided in the power supply unit. The following description will focus on the differences from embodiment 1, and explanation of commonalities may be omitted or simplified.

[0051] Fig. 3 is a diagram showing the configuration of a pendant lamp 101 according to this embodiment. As shown in Fig. 3, the pendant lamp 101 includes a power supply unit 110, a light source unit 20, and a cable unit 30. The power supply unit 110 includes a light source unit 140 in addition to the configuration of the power supply unit 10 of the pendant lamp 1 shown in Fig. 2.

[0052] The light source unit 140 is an example of a second light source unit, and is provided in the power supply unit 110. The light source unit 140 includes a light emitting module disposed inside the housing 11. The light emitting module includes, for example, a substrate and a plurality of light emitting elements mounted on a main surface of the substrate. The substrate is provided with metal wiring that electrically connects the plurality of light emitting elements. The light emitting elements are, for example, LED elements, but are not limited to this. The light source unit 140 emits light using power supplied from a power supply circuit 41 of the power supply unit 110.

[0053] The emission color of the light source unit 140 may be the same as or different from the emission color of the light source unit 20. For example, when the light source unit 20 emits neutral white or daylight white light, the light source unit 140 may emit incandescent white light. The light source unit 140 may emit monochromatic light such as red light, green light, or blue light.

[0054] The power supply unit 110 has a light-transmitting cover 13 for transmitting light from the light source unit 140. The light-transmitting cover 13 forms the lower surface of the housing 11. The light-transmitting cover 13 may be, for example, a lens that condenses or diverges light, a transparent cover, or a diffusion cover.

[0055] In this embodiment, the power supply circuit 41 supplies power not only to the light source unit 20 but also to the light source unit 140. The power supply circuit 41 controls the turning on and off of the light source units 20 and 140 independently, for example, based on control information acquired by the wireless circuit 42.

[0056] 4A to 4C are diagrams showing first to third examples of illumination using the pendant lamp 101 according to this embodiment. In each diagram, the area from which light is emitted is shaded with dots.

[0057] For example, as shown in FIG. 4A, the power supply circuit 41 can turn on both the light source units 20 and 140. Alternatively, as shown in FIG. 4B, the power supply circuit 41 can turn on only the light source unit 20 and turn off the light source unit 140. Alternatively, as shown in FIG. 4C, the power supply circuit 41 can turn on only the light source unit 140 and turn off the light source unit 20. In this case, for example, by making the light output of the light source unit 140 less than the light output of the light source unit 20, the light source unit 140 can also be used as a night light. The power supply circuit 41 may control the dimming and / or color adjustment of each of the light source units 20 and 140.

[0058] As described above, in the pendant lamp 101 according to this embodiment, the power supply unit 110 includes the light source unit 140. The power supply circuit 41 further supplies power to the light source unit 140.

[0059] This allows light to be irradiated also to the vicinity of the ceiling 2, thereby increasing the degree of freedom in the design of the lighting design of the space.

[0060] Furthermore, for example, the power supply circuit 41 controls the turning on and off of each of the light source units 20 and 140 independently based on information acquired by the wireless circuit .

[0061] This allows the lighting mode of the pendant lamp 101 to be changed, thereby allowing the lighting design of the space to be changed.

[0062] (others) Although the pendant lamp according to the present invention has been described above based on the above embodiment, the present invention is not limited to the above embodiment.

[0063] For example, in the above embodiment, the power supply unit 10 or 110 has a Gx53 type base (a pair of conductive pins 12), but this is not limiting. The power supply unit 10 or 110 may have a screw base such as E13 or E26.

[0064] Furthermore, for example, the light source unit 20 or 140 has an LED as a light emitting element, but is not limited to this. The light emitting element may be a laser element or an organic EL (Electroluminescence) element.

[0065] In addition, the present invention also includes forms obtained by applying various modifications to each embodiment that a person skilled in the art would think of, and forms realized by arbitrarily combining the components and functions of each embodiment within the scope of the present invention. [Explanation of symbols]

[0066] 1. 101 Pendant Light 2. Ceiling 10, 110 Power supply section 11. Housing 12 Conductive pin 20 Light source section (first light source section) 30 Cable section 41 Power supply circuit 42 Radio circuit 42a Infrared acquisition unit (first acquisition unit) 42b Radio Communication Department (Second Acquisition Department) 140 Light source section (second light source section)

Claims

1. a power supply unit installed in a fixture body embedded in a ceiling; a first light source unit; a cable unit that connects the power supply unit and the first light source unit and holds the first light source unit at a predetermined height below the ceiling, The power supply unit a power supply circuit that supplies power to the first light source unit via the cable unit; a wireless circuit for acquiring information for controlling the power supply circuit; a housing that houses the power supply circuit and the wireless circuit, The housing is attached so as not to protrude downward from the lower surface of the ceiling. Pendant lamp.

2. the power supply unit includes a conductive pin protruding to the outside of the housing, The electrical connector is fixed to the ceiling by inserting the conductive pin into a power socket provided on the ceiling. The pendant lamp of claim 1.

3. the wireless circuit includes a first acquisition unit that acquires the information via infrared rays; 3. A pendant lamp according to claim 1 or 2.

4. the wireless circuit includes a second acquisition unit that acquires the information through radio wave communication; The pendant lamp according to any one of claims 1 to 3.

5. the power supply unit further includes a second light source unit, The power supply circuit further supplies power to the second light source unit. The pendant lamp according to any one of claims 1 to 4.

6. the power supply circuit independently controls turning on and off of the first light source unit and the second light source unit based on information acquired by the wireless circuit.

6. The pendant lamp according to claim 5.

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