lighting equipment

Abstract

To provide an illumination device which can easily change a lighting state of a light source part by a user.SOLUTION: An illumination device 1 comprises: a light source part; a housing 22; an attachment part 30; and an adjustment part 70. The light source part emits light. The housing 22 covers the light source part. An attachment part 30 is attached to a ceiling or a wall. The adjustment part 70 adjusts a lighting state of the light source part. The attachment part 30 and the adjustment part 70 are arranged to the housing 22. The lighting state preferably indicates a lightness, a light color, a light distribution, wattage or a lighting period. The adjustment part 70 is preferably a switching switch or a switching dial.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a lighting device. [Background technology]

[0002] Solid-state light-emitting elements such as light-emitting diodes (LEDs) are expected to be used as light sources for a variety of products due to their compact size, high efficiency, and long life. In particular, research and development of lighting light sources using LEDs has been progressing in recent years. Such lighting light sources are attached to lighting fixtures and operate as lighting devices.

[0003] Meanwhile, there is known a technique for adding functions to a lighting fixture by providing the lighting fixture with a function expansion terminal and attaching a function plug to the function expansion terminal (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-110376 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the lighting fixture described in Patent Document 1 requires a function plug to be attached to the function expansion terminal, which makes it difficult for the user to easily change functions such as the lighting state.

[0006] The present invention has been made in view of the above-mentioned problems, and has an object to provide a lighting device that allows a user to easily change the lighting state of a light source unit. [Means for solving the problem]

[0007] The lighting device according to the present invention comprises a light source unit, a housing, an attachment unit, and an adjustment unit. The light source unit emits light. The housing covers the light source unit. The attachment unit is attached to a ceiling or a wall. The adjustment unit adjusts the lighting state of the light source unit. The attachment unit and the adjustment unit are disposed on the housing.

[0008] In the lighting device according to the present invention, the lighting state preferably indicates brightness, light color, light distribution, wattage, or lighting period.

[0009] In the lighting device according to the present invention, it is preferable that the adjustment unit is a selector switch or a selector dial.

[0010] In the lighting device of the present invention, it is preferable that the housing comprises a shade that covers the light source unit and a case that houses a control unit, the control unit controls the light source unit based on the adjustment result of the adjustment unit, and the adjustment unit and the mounting unit are arranged in the case.

[0011] In the lighting device of the present invention, it is preferable that the light source unit emits the light along a predetermined direction, the shade is arranged on the side of the case that faces the predetermined direction, and the adjustment unit is arranged on the side of the case that faces the opposite direction to the predetermined direction. [Effects of the Invention]

[0012] According to the lighting device of the present invention, the user can easily change the lighting state of the light source unit. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a perspective view showing an illumination device according to a first embodiment of the present invention. [Figure 2] 1 is a perspective view showing an illumination device according to a first embodiment. [Figure 3] 1 is a cross-sectional view showing an illumination device according to a first embodiment. [Figure 4] FIG. 1 is an exploded perspective view showing a lighting fixture body according to a first embodiment. [Figure 5] 4 is a flowchart showing a method for controlling the lighting state according to the first embodiment. [Figure 6] 1 is a block diagram showing an illumination device according to a first embodiment. [Figure 7] FIG. 10 is a perspective view showing an illumination device according to a second embodiment of the present invention. [Figure 8] FIG. 10 is a perspective view showing an illumination device according to a third embodiment of the present invention. [Figure 9] FIG. 10 is a perspective view showing an illumination device according to a fourth embodiment of the present invention. [Figure 10] FIG. 10 is a block diagram showing an illumination device according to a fifth embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference numerals, and description thereof will not be repeated. In the embodiment of the present invention, the X-axis, Y-axis, and Z-axis are mutually orthogonal, the X-axis and Y-axis are parallel to a horizontal plane, and the Z-axis is parallel to a vertical line.

[0015] <Embodiment 1> An illumination device 1 according to a first embodiment of the present invention will be described with reference to Fig. 1 to Fig. 3. Figs. 1 and 2 are perspective views showing the illumination device 1 according to the first embodiment. Fig. 3 is a cross-sectional view showing the illumination device 1 according to the first embodiment. Specifically, Fig. 1 is a perspective view showing the illumination device 1 as viewed from the light irradiation side. Fig. 2 is a perspective view showing the illumination device 1 as viewed from the opposite side to the light irradiation side.

[0016] 1 to 3, the lighting device 1 emits light. Specifically, the lighting device 1 emits visible light into a room (e.g., a store). In the first embodiment, the light irradiation side refers to the side from which light is emitted, that is, the side from which light is extracted from the lighting device 1 relative to the lighting device 1.

[0017] The room has a ceiling 111, multiple walls, a floor, and a lighting fixture body G. The ceiling 111 may be a horizontal surface or an inclined surface. At least one of the multiple walls is provided with a door. People (e.g., customers or store clerks) enter and exit the room by opening and closing the door.

[0018] The lighting fixture body G is disposed on the ceiling 111. The lighting fixture body G may be embedded in the ceiling 111 or may be suspended from the ceiling 111 by an arm, a wire, or the like.

[0019] The lighting fixture body G is substantially cylindrical. The lighting fixture body G opens in a first direction PD1. The first direction PD1 is an example of a "predetermined direction." The first direction PD1 is a direction perpendicular to the ceiling 111. The first direction PD1 extends along the Z axis.

[0020] The lighting fixture body G will now be described with reference to Figures 3 and 4. Figure 4 is an exploded perspective view showing the lighting fixture body G according to embodiment 1. As shown in Figures 3 and 4, the lighting fixture body G includes a first housing G1 and a second housing G2.

[0021] The second housing G2 includes a recess G2a and a disk portion G2b. The recess G2a is disposed in the center of the disk portion G2b. The recess G2a is recessed in the opposite direction to the first direction PD1. The second housing G2 is, for example, a socket.

[0022] The second housing G2 further includes a pair of engaging portions 101 and a pair of conductor portions 102.

[0023] The pair of engaging portions 101 are disposed in the recess G2a. Specifically, the pair of engaging portions 101 are provided on the inner circumferential surface of the recess G2a. Each of the pair of engaging portions 101 protrudes toward the center of the recess G2a. The pair of engaging portions 101 face each other.

[0024] The pair of conductors 102 are arranged on the disk portion G2b. Each of the pair of conductors 102 has a connection hole 103 and a terminal (not shown). The connection hole 103 has an elongated hole 103a and a circular hole 103b. The elongated hole 103a is substantially arc-shaped. The circular hole 103b is located at one end of the elongated hole 103a. The second cylindrical member 50b (FIG. 2) of the terminal portion 50 can be inserted into the circular hole 103b.

[0025] The pair of terminals are arranged corresponding to the pair of connection holes 103, respectively. An external power supply voltage (for example, AC (alternating current) 100V) is applied to the pair of terminals. For example, a power switch is provided on at least one of the multiple wall surfaces. The pair of terminals is connected to the power switch by an electric wire. When the power switch is in a connected state (ON state), the external power supply voltage is applied to the pair of terminals.

[0026] For example, a GX53 base or a GH76p base is adopted as the base structure of the lighting device 1. Specifically, the lighting device 1 includes a housing 20, an attachment portion 30, and a pair of terminal portions 50.

[0027] The housing 20 includes a shade 21 and a case 22. The case 22 is shaped, for example, as a cylinder having an upper surface. Specifically, the case 22 has a top plate 22a and a side wall 22b. The top plate 22a is disposed on the opposite side of the case 22 from the first direction PD1. The case 22 is made of, for example, an insulating resin material such as PBT (polybutylene terephthalate) or a metal such as aluminum.

[0028] The shade 21 is shaped, for example, as a cylinder having a bottom surface. Specifically, the shade 21 has a bottom plate 21a and a side wall 21b. The bottom plate 21a is disposed on the first direction PD1 side of the shade 21. The shade 21 is disposed on the first direction PD1 side of the case 22. As a result, the top plate 22a and the bottom plate 21a face each other in the first direction PD1.

[0029] The shade 21 is made of a resin material such as acrylic (PMMA) or polycarbonate (PC). The shade 21 may have a transparent structure that does not have light diffusion properties, or may have a diffusing structure that has light diffusion properties. For example, the shade 21 can be made to have a light diffusion function by forming a milky white light diffusion film by applying a resin containing a light diffusion material such as silica or calcium carbonate or a white pigment to the inner surface of the shade 21, or by forming minute irregularities on the shade 21.

[0030] The mounting portion 30 is integrally provided on the upper surface of the housing 20. Specifically, the mounting portion 30 is provided in the center of the top plate 22a. The mounting portion 30 has a cylindrical shape. The mounting portion 30 has a pair of recesses 31. Each of the pair of recesses 31 is recessed toward the inside of the mounting portion 30. Each of the pair of recesses 31 has, for example, a substantially L-shape.

[0031] Each of the pair of terminal portions 50 is disposed on the housing 20. Specifically, each of the pair of terminal portions 50 is disposed on the top plate 22a. Each of the pair of terminal portions 50 includes a first cylindrical member 50a extending along the first direction PD1 and a second cylindrical member 50b extending along the first direction PD1. The first cylindrical member 50a is disposed on the first direction PD1 side of the second cylindrical member 50b. The diameter of the second cylindrical member 50b is larger than the diameter of the first cylindrical member 50a. Each of the pair of terminal portions 50 is made of metal.

[0032] The lighting device 1 according to the first embodiment is detachable from the lighting fixture body G. Specifically, the pair of recesses 31 of the mounting portion 30 are engageable with and detachable from the pair of engaging portions 101 of the lighting fixture body G. The second cylindrical members 50b of the pair of terminal portions 50 are connected to the terminals by passing through connection holes 103 of the pair of conductor portions 102 of the lighting fixture body G. Specifically, a user can attach the lighting device 1 to the lighting fixture body G by inserting the pair of terminal portions 50 of the lighting device 1 into the pair of conductor portions 102 and rotating the lighting device 1 in a predetermined rotational direction. In addition, a user can remove the lighting device 1 from the lighting fixture body G by rotating the lighting device 1 in the direction opposite to the predetermined rotational direction.

[0033] Next, a light source of the lighting device 1 will be described. The lighting device 1 further includes an LED module 10. The LED module 10 is an example of a "light source unit." The LED module 10 emits at least visible light. Specifically, the visible light emitted from the LED module 10 passes through a shade 21 and is emitted to the outside of the housing 20.

[0034] The LED module 10 includes a substrate 11 and a light-emitting unit 12. The light-emitting unit 12 has a plurality of LEDs and a sealing member that seals the plurality of LEDs. The plurality of LEDs are mounted, for example, in a plurality of rows or in a matrix on the substrate 11. That is, the LED module 10 has a so-called COB (Chip On Board) structure in which the plurality of LEDs are directly mounted on the substrate 11. Note that, although LEDs are exemplified as light-emitting elements in the first embodiment, semiconductor light-emitting elements such as semiconductor lasers, or other solid-state light-emitting elements such as EL elements such as organic EL (Electro Luminescence) and inorganic EL elements may also be used.

[0035] The lighting device 1 according to the first embodiment further includes an adjustment unit 70. The adjustment unit 70 adjusts the lighting state of the LED module 10. In the lighting device 1 according to the first embodiment, the adjustment of the lighting state indicates brightness.

[0036] The adjustment unit 70 according to the first embodiment is a switching dial. The switching dial is, for example, disk-shaped. The switching dial is rotatable around an axis along the first direction PD1. For example, a user can increase the intensity of light emitted from the LED module 10 by a predetermined amount by rotating the switching dial with their finger in a predetermined rotation direction. In other words, the light can be made brighter. Furthermore, a user can decrease the intensity of light emitted from the LED module 10 by a predetermined amount by rotating the lighting device 1 with their finger in the direction opposite to the predetermined rotation direction. In other words, the light can be made darker. The adjustment unit 70 sends a control signal indicating the adjustment result to a power supply circuit (not shown) built into the lighting device 1. The power supply circuit (not shown) increases or decreases the current or voltage output to the LED module 10 based on the control signal sent from the adjustment unit 70.

[0037] The switch dial can be rotated in steps, and the user can adjust the intensity of the light emitted from the LED module 10 in steps.

[0038] The adjustment unit 70 is disposed in the housing 20. Specifically, the adjustment unit 70 is disposed in the case 22. More specifically, the adjustment unit 70 is disposed on the mounting unit 30. The adjustment unit 70 is disposed in a recess formed in the mounting unit 30. A portion of the side surface of the adjustment unit 70 is exposed through a notch provided in the side surface of the mounting unit 30. By exposing a portion of the side surface of the adjustment unit 70, the user can easily place their fingers on the side surface of the adjustment unit 70, making it easier to rotate the adjustment unit 70. Note that by providing one or more protrusions on the side surface of the adjustment unit 70, the user can easily place their fingers on the side surface of the adjustment unit 70, making it easier to rotate the adjustment unit 70.

[0039] As described above with reference to FIGS. 1 to 4, the adjustment unit 70 is disposed in the housing 20. As a result, the user uses the adjustment unit 70 to change the lighting state of the LED module 10. For example, the user adjusts the intensity of light emitted from the LED module 10. After the user changes the lighting state of the LED module 10, the user rotates the lighting device 1 in a predetermined rotational direction to attach it to the lighting fixture body G. Thereafter, the lighting device 1 emits light of the adjusted intensity into a room (e.g., a store). This allows the user to easily change the degree of dimming.

[0040] For example, if a user wants to change the brightness that he or she uses on a daily basis, the user can arbitrarily set the brightness of the lighting device 1 without replacing the lighting device 1 with another lighting device. Also, when multiple lighting fixture bodies G and lighting devices 1 are installed on one ceiling 111, the brightness of the multiple lighting devices 1 can be unified even if there are individual differences in the brightness of the lighting devices 1.

[0041] The adjustment unit 70 is a switch dial, and as a result, the user can adjust the lighting state of the LED module 10 by rotating the switch dial.

[0042] The adjustment unit 70 is disposed in the case 22. As a result, when the lighting device 1 is attached to the lighting fixture body G, it is not visible to people (e.g., customers), and it is possible to suppress the impact on the aesthetic appearance of the room (e.g., a store). Furthermore, the adjustment unit 70 is disposed on the top panel 22a. As a result, it is not visible to people (e.g., customers), and it is possible to further suppress the impact on the aesthetic appearance of the room (e.g., a store).

[0043] The adjustment unit 70 may adjust the light color of the LED module 10. In other words, the adjustment of the lighting state indicates the light color. For example, if the LED module 10 has a nematic liquid crystal containing a color-tunable dichroic dye, the light transmittance of the nematic liquid crystal may be controlled by applying a voltage in response to a control signal. Furthermore, if the LED module 10 has multiple LEDs with different color temperatures, the brightness of each of the multiple LEDs with different color temperatures may be independently controlled in response to a control signal.

[0044] Next, an example of a lighting state control method according to this embodiment will be described with reference to Fig. 5. Fig. 5 is a flowchart showing the lighting state control method according to embodiment 1. As shown in Fig. 5, the lighting state control method includes steps S101 to S102. The lighting state control method is executed by the lighting device 1.

[0045] First, in step S101, the adjustment unit 70 outputs a control signal indicating the adjustment result to the LED module 10.

[0046] Next, in step S102, the LED module 10 emits light into the room (for example, a store) based on the control signal.

[0047] Next, a detailed description will be given of the control unit 60 that controls the driving of the LED module 10. Fig. 6 is a block diagram showing the lighting device 1 according to the first embodiment. As shown in Fig. 6, the lighting device 1 further includes a power conversion unit 80 and a control unit 60. The control unit 60 includes a power supply unit 61 and a power supply unit 62.

[0048] The power supply conversion unit 80 converts AC power supplied from an external power supply voltage (for example, power from an AC 100V commercial power supply) into DC power and outputs it to the control unit 60. The power supply conversion unit 80 receives power from the external power supply voltage via the pair of terminal units 50, which are connected to the pair of conductor units 102 of the lighting fixture body G.

[0049] Specifically, the power conversion unit 80 is, for example, a bridge-type full-wave rectifier circuit configured with four diodes, but may be any other form such as an AC-DC converter IC.

[0050] The power supply unit 61 operates the power supply unit 62 using the DC power received from the power conversion unit 80. Specifically, the power supply unit 61 is a power supply circuit, but may take any form, such as a DC-DC converter IC.

[0051] The power supply unit 62 supplies power to the LED module 10. The power supply unit 62 is, for example, an inverter circuit and a rectifier circuit connected to the inverter circuit. The power supply unit 62 controls the lighting state of the LED module 10 in response to a control signal received from the adjustment unit 70. For example, the power supply unit 62 controls the lighting state of the LED module 10 by controlling the amount of power supplied to the LED module 10 in response to the control signal.

[0052] More specifically, the power supply unit 62 controls the number of emitting LEDs included in the LED module 10 in response to the control signal, thereby controlling the brightness of the LED module 10. Furthermore, if the power supply unit 62 is a PWM circuit, the power supply unit 62 performs pulse width modulation of the voltage supplied to the LED module 10 in response to the control signal, thereby controlling the brightness of the LED module 10.

[0053] The power supply unit 62 may be any type of circuit, such as a chopper control circuit that changes a switching control state in response to a control signal and adjusts the power to the LED module 10. Specifically, the chopper control circuit is a PWM (Pulse Width Modulation) circuit, a PFM (Pulse Frequency Modulation) circuit, or the like.

[0054] In addition, the lighting state of the LED module 10 may be controlled by controlling the amount of power that the power supply unit 61 receives from the power conversion unit 80 in response to a control signal, or the amount of power that the power supply unit 61 supplies to the power supply unit 62, rather than by the power supply unit 62.

[0055] <Embodiment 2> An illumination device 2 according to a second embodiment of the present invention will be described with reference to Fig. 7. Fig. 7 is a perspective view showing the illumination device 2 according to the second embodiment. Specifically, Fig. 7 is a perspective view showing the illumination device 2 as viewed from the side opposite to the light irradiation side. In the illumination device 1 according to the first embodiment, the adjustment unit 70 is a selector dial, whereas in the illumination device 2 according to the second embodiment, the adjustment unit 170 is a selector switch.

[0056] The changeover switch is, for example, a dip switch (dual in-line package switch). For example, a user can adjust the intensity of light emitted from the LED module 10 in stages by operating the dip switch with a finger. The adjustment unit 170 outputs a control signal indicating the adjustment result to the LED module 10. The changeover switch may be, for example, a three-way switch.

[0057] The adjustment unit 170 is disposed in the housing 20. Specifically, the adjustment unit 170 is disposed in the case 22. More specifically, the adjustment unit 170 is disposed on the top plate 22a.

[0058] As described above with reference to FIG. 7 , the adjustment unit 170 is disposed in the housing 20. As a result, the user uses the adjustment unit 170 to change the lighting state of the LED module 10. For example, the user adjusts the intensity of light emitted from the LED module 10. After the user changes the lighting state of the LED module 10, the user rotates the lighting device 2 in a predetermined rotation direction to attach it to the lighting fixture body G. Thereafter, the lighting device 2 emits light of the adjusted intensity into a room (e.g., a store). This allows the user to easily change the dimming.

[0059] <Embodiment 3> An illumination device 3 according to a third embodiment of the present invention will be described with reference to Fig. 8. Fig. 8 is a perspective view showing the illumination device 3 according to the third embodiment. Specifically, Fig. 8 is a perspective view showing the illumination device 3 as viewed from the side opposite to the light irradiation side. In the illumination device 1 according to the first embodiment, the adjustment unit 70 is a switching dial that can be rotated with a finger, whereas in the illumination device 3 according to the third embodiment, the adjustment unit 270 is a switching dial that can be rotated with a tool.

[0060] The switching dial has a rectangular recess. A flat-head screwdriver can be inserted into the recess. The switching dial is rotatable around an axis along the first direction PD1. For example, a user can adjust the intensity of light emitted from the LED module 10 by a predetermined amount by using a flat-head screwdriver to rotate the switching dial by a predetermined amount in a predetermined rotational direction. The adjustment unit 270 outputs a control signal indicating the adjustment result to the LED module 10.

[0061] The adjustment unit 270 is disposed in the housing 20. Specifically, the adjustment unit 270 is disposed in the case 22. More specifically, the adjustment unit 270 is disposed on the top plate 22a.

[0062] As described above with reference to FIG. 8 , the adjustment unit 270 is disposed in the housing 20. As a result, the user uses the adjustment unit 270 to change the lighting state of the LED module 10. For example, the user adjusts the intensity of light emitted from the LED module 10. After the user changes the lighting state of the LED module 10, the user rotates the lighting device 3 in a predetermined rotational direction to attach it to the lighting fixture body G. Thereafter, the lighting device 3 emits light of the adjusted intensity into a room (e.g., a store). This allows the user to easily change the brightness.

[0063] <Embodiment 4> An illumination device 4 according to a fourth embodiment of the present invention will be described with reference to Fig. 9. Fig. 9 is a perspective view showing the illumination device 4 according to the fourth embodiment. Specifically, Fig. 9 is a perspective view showing the illumination device 4 as viewed from the light emission side. In the illumination device 1 according to the first embodiment, the adjustment unit 70 is disposed in the case 22, whereas in the illumination device 4 according to the fourth embodiment, the adjustment unit 370 is disposed in the shade 21.

[0064] The adjustment unit 370 is a selector switch (push button). The selector switch can be pressed in a direction along the first direction PD1. For example, a user can adjust the intensity of light emitted from the LED module 10 in stages by pressing the selector switch with a finger. The adjustment unit 370 outputs a control signal indicating the adjustment result to the LED module 10.

[0065] The adjustment part 370 is disposed in the housing 20. Specifically, the adjustment part 370 is disposed in the shade 21. More specifically, the adjustment part 370 is disposed in the lower plate 21a.

[0066] As described above with reference to FIG. 9 , the adjustment unit 370 is disposed on the lower plate 21a. As a result, the user attaches the lighting device 4 to the lighting fixture body G by rotating it in a predetermined rotation direction. After attaching the lighting device 4 to the lighting fixture body G, the user uses the adjustment unit 370 to change the lighting state of the LED module 10. For example, the user adjusts the intensity of the light emitted from the LED module 10. The lighting device 4 then emits light of the adjusted intensity into the room (e.g., a store). This allows the user to check the brightness while making changes.

[0067] <Embodiment 5> An illumination device 5 according to a fifth embodiment of the present invention will be described with reference to Fig. 10. Fig. 10 is a block diagram showing the illumination device 5 according to the fifth embodiment. In the illumination device 1 according to the first embodiment, the adjustment unit 70 adjusts the brightness of the light emitted from the LED module 10, whereas in the illumination device 5 according to the fifth embodiment, the adjustment unit 470 adjusts the light distribution of the light emitted from the LED module 10.

[0068] 10, the lighting device 5 further includes a drive mechanism 90. The drive mechanism 90 changes the light distribution angle of the plurality of LEDs.

[0069] The adjustment unit 470 adjusts the lighting state of the LED module 10. In the lighting device 5 according to the fifth embodiment, the lighting state indicates the light distribution. For example, the user adjusts the light distribution of the light emitted from the LED module 10 by rotating the switch dial.

[0070] The power supply unit 62 controls the drive mechanism 90 in response to the control signal, thereby controlling the distribution of light emitted from the LED module 10.

[0071] Alternatively, an optical member for changing the light distribution angle of the LED and a drive mechanism for changing the position or angle of the optical member may be provided, and the power supply unit 62 may control the drive mechanism for the optical member in response to a control signal, thereby controlling the light distribution of the light emitted from the LED module 10. Note that the LED module 10 may have a plurality of LEDs with different mounting angles (angles of the light-emitting surface), and the power supply unit 62 may control the light distribution of the light emitted from the LED module 10 by controlling the combination of LEDs to be turned on and the number of LEDs to be turned on in response to a control signal.

[0072] As described above with reference to FIG. 10 , the adjustment unit 470 of the lighting device 5 is disposed in the housing 20. As a result, a user uses the adjustment unit 470 to change the lighting state of the LED module 10. For example, the user adjusts the light distribution of light emitted from the LED module 10. After the user changes the lighting state of the LED module 10, the user rotates the lighting device 5 in a predetermined rotational direction to attach it to the lighting fixture body G. Thereafter, the lighting device 5 emits light with the adjusted light distribution into a room (e.g., a store). This allows the user to easily change the light distribution.

[0073] For example, if a user wishes to change the light distribution on a daily basis, the light distribution of the lighting device 5 can be set arbitrarily without replacing the lighting device 5 with another lighting device.

[0074] The embodiments of the present invention have been described above with reference to the drawings. However, the present invention is not limited to the above embodiments and can be embodied in various forms without departing from the spirit and scope of the present invention. Furthermore, various inventions can be formed by appropriately combining multiple components disclosed in the above embodiments. For example, some components may be omitted from all components shown in the embodiments. Furthermore, components from different embodiments may be appropriately combined. The drawings mainly show each component in a schematic manner to facilitate understanding. The thickness, length, number, spacing, etc. of each component shown in the drawings may differ from the actual ones due to the convenience of drawing. Furthermore, the speed, material, shape, dimensions, etc. of each component shown in the above embodiments are merely examples and are not particularly limited. Various modifications are possible within a scope that does not substantially deviate from the configuration of the present invention.

[0075] (1) Although the lighting devices according to the first to fifth embodiments include one adjustment unit, this is not limiting. The lighting device may include multiple adjustment units. For example, the lighting device may include one selector dial and one selector switch. Alternatively, the lighting device may include two selector dials. The two selector dials may be aligned in the first direction PD1.

[0076] (2) In the lighting device 1 according to the first embodiment, the entire switch dial is exposed, but this is not limited to this. Part of the switch dial may be exposed. Furthermore, the size of the switch dial may be any size.

[0077] (3) In the lighting devices according to the first to fifth embodiments, the adjustment unit adjusts the brightness, light color, or light distribution, but this is not limiting. The adjustment unit may also adjust the wattage or the lighting period.

[0078] (4) Although the lighting devices according to the first to fifth embodiments are generally cylindrical, the lighting devices are not limited to this. They may be rectangular parallelepipeds or polygonal prisms. [Industrial Applicability]

[0079] The present invention provides a lighting device and has industrial applicability. [Explanation of symbols]

[0080] 1: Lighting equipment 22: Housing 30: Mounting part 70: Adjustment section

Claims

1. A lighting device that can be attached to or detached from a socket that is attached to a ceiling or wall, a light source unit that emits light; a housing that covers the light source unit; a mounting portion that is attached to the socket; an adjustment unit that adjusts the lighting state of the light source unit; Equipped with the mounting portion has a cylindrical shape that protrudes from a top plate of the housing and is configured to be inserted into a recess of the socket, The adjustment unit has a circular dial that can be rotated, and the dial is positioned in a recess on the top surface of the adjustment unit so that a portion of the side of the dial is exposed through a notch on the side of the mounting unit.

2. The lighting device according to claim 1 , wherein the lighting state indicates brightness, light color, light distribution, wattage, or lighting period.

3. The housing includes: a shade that covers the light source unit; A case that houses the control unit Equipped with The lighting device according to claim 1 , wherein the control unit controls the light source unit based on an adjustment result of the adjustment unit.

4. the light source unit emits the light along a predetermined direction, The shade is disposed on the predetermined direction side of the case, The lighting device according to claim 3 , wherein the adjustment unit is disposed on a side of the case opposite to the predetermined direction.

Images