Lighting device and lighting control system

Abstract

To enlarge an irradiation range of light.SOLUTION: A lighting device A1 includes a first LED 101A emitting first light, a second LED 101B emitting second light, a first lens part 111 controlling light distribution of the first light, a second lens part 112 controlling light distribution of the second light, and a first housing 12. The first housing 12 includes: a bottom wall 130; and a plurality of side walls (a first side wall 131, a second side wall 132, a right end cover, and a left end cover). The length H2 along the vertical direction of the second side wall 132 on the side of the second LED 101B in a longitudinal direction in the plurality of side walls is shorter than that of the first side wall 131 on the side of the first LED 101A in a longitudinal direction.SELECTED DRAWING: Figure 11

Description

[Technical field]

[0001] The present disclosure relates to a lighting device and a lighting control system, and more particularly to a lighting device capable of controlling light distribution, and a lighting control system having the lighting device. [Background technology]

[0002] As a conventional example, an illumination device described in Patent Document 1 is exemplified. The illumination device described in Patent Document 1 (hereinafter, referred to as the conventional example) is used for purposes (stage lighting) of illuminating wall surfaces (horizon surfaces) serving as backgrounds in television studios, theater stages, and the like.

[0003] The conventional example includes a power supply unit, a light source unit arranged above the power supply unit in the height direction, and an arm unit that rotatably supports the light source unit relative to the power supply unit. The light source unit includes a light source housing formed in a square box shape (rectangular parallelepiped shape), and a light source and optical components arranged in the light source housing. The light source uses a light emitting module in which multiple light emitting elements are mounted on a board. The optical components include a reflective component that reflects light emitted by the light emitting elements so that it is emitted upward from an opening in the light source housing. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2022-149520 A Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, in conventional lighting devices, it is desirable to widen the illumination range, particularly in the vertical direction.

[0006] An object of the present disclosure is to provide a lighting device and a lighting control system that can expand the range of light irradiation. [Means for solving the problem]

[0007] A lighting device according to an aspect of the present disclosure includes a first light source that emits a first light, a second light source that emits a second light, a first lens unit that controls the light distribution of the first light, a second lens unit that controls the light distribution of the second light, and a housing. The housing accommodates the first light source, the second light source, the first lens unit, and the second lens unit. The housing has a bottom wall and a plurality of side walls. The bottom wall has the first light source and the second light source arranged along a bottom surface thereof. The plurality of side walls protrude from the bottom wall along a first direction. The first light source and the second light source are arranged side by side on the bottom surface of the bottom wall along a second direction intersecting with the first direction. Of the plurality of side walls, a second side wall on the side of the second light source in the second direction has a shorter length along the first direction than a first side wall on the side of the first light source in the second direction.

[0008] A lighting control system according to one aspect of the present disclosure includes the lighting device and a control device that controls the lighting device. Effect of the Invention

[0009] The lighting device and lighting control system according to the present disclosure have the advantage of being able to expand the range of light irradiation. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a front perspective view of a lighting device according to an embodiment of the present disclosure. [Diagram 2] FIG. 2 is a perspective view of the above lighting device as seen from behind. [Diagram 3] Fig. 3A is a front view of the lighting device of the same, Fig. 3B is a left side view of the lighting device of the same, Fig. 3C is a right side view of the lighting device of the same, Fig. 3D is a rear view of the lighting device of the same, Fig. 3E is a plan view of the lighting device of the same, and Fig. 3F is a bottom view of the lighting device of the same. [Figure 4] FIG. 4 is an exploded perspective view of the above lighting device. [Diagram 5] FIG. 5 is a left side view of the lighting device of the above with the left end cover and the left side plate omitted. [Figure 6] FIG. 6 is a block diagram of a power supply circuit unit in the lighting device. [Figure 7] FIG. 7 is a perspective view of the first modification of the illumination device as viewed from the front. [Figure 8] FIG. 8 is a perspective view of the illumination device according to the second modification seen from the front. [Figure 9] FIG. 9 is a perspective view of the third modification of the illumination device as viewed from the front. [Figure 10] FIG. 10 is a system configuration diagram of a lighting control system including the above lighting device. [Figure 11] FIG. 11 is a right side view of the above lighting device with the left and right end covers of the light emitting unit omitted. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, the lighting device A1 and the lighting control system C1 according to the embodiment of the present disclosure will be described in detail with reference to the drawings. However, each figure described in the following embodiment is a schematic diagram, and the ratio of the size and thickness of each component does not necessarily reflect the actual dimensional ratio. Note that the configuration described in the following embodiment is merely one example of the present disclosure. The present disclosure is not limited to the following embodiment, and various modifications are possible depending on the design, etc., as long as the effects of the present disclosure can be achieved.

[0012] (1) Overview The lighting device A1 according to the embodiment includes a first light source (first LED 101A) that emits a first light, a second light source (second LED 101B) that emits a second light, a first lens unit 111 that controls the light distribution of the first light, a second lens unit 112 that controls the light distribution of the second light, and a housing (first housing 12) (see FIGS. 1 to 4). The first housing 12 houses the first LED 101A, the second LED 101B, the first lens unit 111, and the second lens unit 112.

[0013] The first housing 12 has a bottom wall 130 and a plurality of side walls (a first side wall 131, a second side wall 132, a right end cover 14R, and a left end cover 14L). The bottom wall 130 has a first LED 101A and a second LED 101B arranged along the bottom surface.

[0014] The side walls protrude from the bottom wall 130 in a first direction (the up-down direction).

[0015] The first LED 101A and the second LED 101B are arranged side by side along a second direction (front-to-back direction) intersecting the first direction (up-down direction) on the bottom surface of the bottom wall 130. Of the multiple side walls, the second side wall 132 on the side of the second LED 101B in the second direction (front-to-back direction) has a shorter length along the first direction (up-to-down direction) than the first side wall 131 on the side of the first LED 101A in the second direction (front-to-back direction) (see FIG. 5).

[0016] In the conventional example described in Patent Document 1, the light source housing that houses the light source is formed in a rectangular box shape, and when the direction perpendicular to the rotation axis of the light source unit is defined as the front-to-rear direction, the front wall and rear wall of the light source housing are formed to have the same shape and dimensions.

[0017] In contrast, in the lighting device A1 according to the embodiment, the second side wall 132 on the second LED 101B side in the front-rear direction among the multiple side walls has a shorter length in the up-down direction than the first side wall 131 on the first LED 101A side in the front-rear direction (see FIG. 5). Therefore, of the second light whose light distribution is controlled by the second lens unit 112, the amount of light that is not blocked by the second side wall 132 of the first housing 12 can be increased.

[0018] As a result, the illumination device A1 according to this embodiment can expand the irradiation range of the light (second light).

[0019] Here, the lighting device A1 according to the embodiment may constitute a lighting control system C1 according to the embodiment together with a control device B1. As shown in Fig. 10, the lighting control system C1 according to the embodiment includes the lighting device A1 according to the embodiment and a control device B1 that controls the lighting device A1 according to the embodiment. Note that the lighting control system C1 according to the embodiment may include a plurality of lighting devices A1 according to the embodiment as shown in Fig. 10.

[0020] The control device B1 is preferably connected to the lighting device A1 according to the embodiment so as to be able to communicate with it via a communication cable X1. The control device B1 transmits a control signal to the lighting device A1 according to the embodiment through the communication cable X1, and controls (switches between on and off, adjusts brightness, adjusts color, etc.) the lighting device A1 according to the embodiment using the control signal.

[0021] Thus, in the lighting control system C1 according to the embodiment, since the lighting device A1 according to the embodiment is configured as described above, it is possible to expand the irradiation range of the first light and the second light.

[0022] (2)Details As shown in Figs. 1 to 5, the illumination device A1 according to the embodiment (hereinafter, abbreviated as illumination device A1) includes a light-emitting unit 1, a power supply unit 2, a pair of support parts 3, and a pair of connection parts 4. As in the conventional example, the illumination device A1 is a so-called horizon light (lower horizon light) used for purposes (stage lighting, production lighting) of illuminating the background surface (horizon surface) of a television studio or a theater stage. However, the illumination device according to the embodiment may be a lighting device other than a horizon light as long as it is an illumination device capable of adjusting the light irradiation direction.

[0023] In the following description, unless otherwise specified, the up-down, front-back, left-right directions indicated by arrows in FIG. 4 are defined as the up-down, front-back, left-right directions of the lighting device A1.

[0024] (2-1) Power supply unit The power supply unit 2 includes a power supply circuit section 21 and a second housing 20 that houses the power supply circuit section 21 (see FIGS. 4 and 5). The power supply unit 2 further includes an outlet 22, a power cable 23, a first connector 24A, a second connector 24B, a control circuit section 25, a display section 26, an input receiving section 27, and the like (see FIGS. 4 to 6).

[0025] (2-1-1) Power supply circuit section As shown in FIG. 6, the power supply circuit unit 21 has an AC / DC converter 210 and six DC / DC converters 211.

[0026] AC / DC converter 210 is configured to convert an AC voltage (for example, a sinusoidal AC voltage with an effective value of 100 V or 200 V) input via power cable 23 into a DC voltage. Three electric wires 230 included in power cable 23 are electrically connected in parallel to outlet 22 for the feed wiring, the input end of AC / DC converter 210, and the frame earth (see FIG. 6).

[0027] The AC / DC converter 210 includes, for example, a full-wave rectifier (diode bridge), a boost chopper for power factor improvement, etc. A pair of output terminals of the AC / DC converter 210 and a pair of input terminals of six systems (six units) of DC / DC converters 211 are electrically connected in parallel. The AC / DC converter 210 is configured as a printed circuit in which a plurality of circuit elements 2101 are mounted on a rectangular circuit board 2100 (see FIGS. 4 and 5).

[0028] The six DC / DC converters 211 correspond one-to-one to the six types of LEDs 101 constituting the light source module 10 as described later, and supply a direct current to the corresponding one type of LED 101 via a pair of electric wires 212. For example, each DC / DC converter 211 is configured as a buck converter that steps down the direct current voltage input from the AC / DC converter 210. However, each DC / DC converter 211 may be configured as a buck-boost converter or a flyback converter. A pair of electric wires 212 (positive and negative) is electrically connected to the output end of each DC / DC converter 211. However, for one DC / DC converter 211, since the current consumption of the corresponding LED 101 is larger than the current consumption of the other LEDs 101, each pair of electric wires 212 is branched into two electric wires 212, so that a direct current is supplied through a total of four electric wires 212 (two pairs). Therefore, the power supply circuit section 21 is electrically connected to the light-emitting unit 1 by a total of 14 electric wires 212, including seven positive electrodes and seven negative electrodes.

[0029] These six DC / DC converters 211 are configured as printed circuits in which a plurality of circuit elements 2111 are mounted on a rectangular circuit board 2110 (see FIGS. 4 and 5).

[0030] The control circuit unit 25 has a microcontroller as a main component. The control circuit unit 25 also has a communication circuit for communicating with the control device B1 (see FIG. 10) of the lighting control system C1. The control circuit unit 25 also has a plurality of circuit elements 251 including a microcontroller and a communication circuit, and a circuit board 250 on which the plurality of circuit elements 251 are mounted (see FIG. 5). That is, the control circuit unit 25 is composed of a printed circuit in which the plurality of circuit elements 251 are mounted on the rectangular circuit board 250.

[0031] The communication circuit has a function of transmitting and receiving a digital control signal (hereinafter referred to as a DMX signal) conforming to a communication standard suitable for lighting control, for example, DMX (Digital Multiplex) 512A, via a communication cable X1 connected to the first connector 24A (see FIG. 10). However, the communication circuit may have a function of transmitting and receiving a control signal conforming to a communication standard other than DMX 512A, for example, DALI (Digital Addressable Lighting Interface: registered trademark) or a wired LAN standard such as 100BASE-T and 1000BASE-T. The second connector 24B is electrically connected in parallel to the first connector 24A. That is, the control circuit unit 25 (lighting device A1) is electrically connected to the control device B1 by a daisy-chain type network topology (see FIG. 10).

[0032] The control circuit section 25 executes a lighting control program using a microcontroller, thereby controlling the power supply circuit section 21 in response to commands received from the control device B1 via the communication circuit, and controls the blinking, dimming, color adjustment, etc. of the light-emitting unit 1.

[0033] The input reception unit 27 has four tact switches (push button switches) 270 and one slide switch (changeover switch) (see FIG. 5). The input reception unit 27 receives an operation input by an operator according to the on / off state of the tact switches 270 and the slide switches. For example, when an operator presses the tact switch 270, the contact of the tact switch 270 closes, and an operation input of an on operation is received by the input reception unit 27. When an operator slides the operation piece of the slide switch from the off position to the on position, the contact of the slide switch closes, and an operation input of an on operation is received by the input reception unit 27. When an operator slides the operation piece of the slide switch from the on position to the off position, the contact of the slide switch opens, and an operation input of an off operation is received by the input reception unit 27. The operation input received by the input reception unit 27 (for example, a voltage signal corresponding to on / off) is taken into the control circuit unit 25 (microcontroller).

[0034] The display unit 26 has four seven-segment displays 260 (see FIG. 5). Each seven-segment display 260 can display ten numbers from "0" to "9" and several alphabetical characters such as "A", "F", "U", "c", "h", and "n". These four seven-segment displays 260 are controlled by a control circuit unit 25 (microcontroller). The display unit 26 and the input receiving unit 27 are mounted on a single board 261 and are integrally configured (see FIG. 5).

[0035] When the input receiving unit 27 receives an operation input of turning on the slide switch, the control circuit unit 25 electrically connects a termination resistor to the signal transmission contact of the second connector 24B to terminate the second connector 24B. On the other hand, when the input receiving unit 27 receives an operation input of turning off the slide switch, the control circuit unit 25 operates to electrically disconnect the contact of the second connector 24B from the termination resistor to release the termination of the second connector 24B. In other words, when the sending communication cable X1 is connected to the second connector 24B, the slide switch is turned off, and when the sending communication cable X1 is not connected to the second connector 24B, the slide switch is turned on.

[0036] Furthermore, the input receiving unit 27 receives an operational input for switching to the menu mode when one of the tact switches 270 is turned on. Furthermore, the input receiving unit 27 receives an operational input (up / down) for selecting a menu when the other two tact switches 270 are turned on. The input receiving unit 27 receives an operational input for confirming the selected content when the remaining tact switch 270 is turned on. The multiple menus include a manual dimming operation, a DMX address setting, and a setting for an operation when the DMX signal is interrupted.

[0037] For example, when the input receiving unit 27 receives an operation input to select the menu for manual dimming operation from among multiple menus, the control circuit unit 25 increases or decreases the dimming level each time the input receiving unit 27 receives an operation input of the two tactile switches 270 (up / down). Then, when the input receiving unit 27 receives an operation input of the deciding tactile switch 270, the control circuit unit 25 determines the dimming level to the dimming level selected immediately before, and stores the determined dimming level value in the memory of the microcontroller. Furthermore, the control circuit unit 25 controls the power supply circuit unit 21 to supply a direct current according to the determined dimming level from each DC / DC converter 211 to the LEDs 101 of each color.

[0038] Here, the control circuit section 25 displays the dimming level during the setting of the manual dimming operation, the DMX address during and after the setting, etc. on the display section 26. In other words, the operator can perform the setting work while checking the dimming level, DMX address, etc. by the numbers and letters displayed on the display section 26.

[0039] (2-1-2) Second housing The above-mentioned power supply circuit section 21 is housed in a second housing 20 made of metal (see Figs. 4 and 5). The second housing 20 has a box 200 that is open at the top and a cover 206 that closes the opening at the top of the box 200 (see Fig. 4).

[0040] The box 200 has a rectangular bottom plate 201, a rectangular front plate 202 rising upward from the front end of the bottom plate 201, and a rectangular rear plate 203 rising upward from the rear end of the bottom plate 201. The bottom plate 201, the front plate 202, and the rear plate 203 are integrally formed by bending a single metal plate.

[0041] The box 200 further includes a left side plate 204 and a right side plate 205. The left side plate 204 and the right side plate 205 are each formed in a rectangular shape as a whole, but have trapezoidal recesses 2041, 2051 at their upper ends (upper sides) (see FIGS. 4 and 5).

[0042] The left side plate 204 is fixed to the left ends of the front plate 202 and the rear plate 203 with two screws each, thereby forming the left side wall of the box 200. The right side plate 205 is fixed to the right ends of the front plate 202 and the rear plate 203 with two screws each, thereby forming the right side wall of the box 200. Furthermore, the lower ends 2040, 2050 of the left side plate 204 and the right side plate 205 are bent in a direction approaching the bottom plate 201 (see Figs. 1 and 4). Each of the lower ends 2040, 2050 protrudes downward from the lower surface of the bottom plate 201 by a predetermined distance. Note that the predetermined distance is equal to or greater than the height of the heads of the multiple screws 2010 exposed on the lower surface of the bottom plate 201 (see Fig. 5). In other words, when the second housing 20 is installed on the floor surface of a stage, the pair of lower ends 2040, 2050 come into contact with the floor surface, thereby allowing the second housing 20 to be stably installed on the floor surface.

[0043] The two circuit boards 2100, 2110 of the power supply circuit section 21 housed in the second housing 20 are fixed to the bottom plate 201 with their mounting surfaces facing upwards by a plurality of screws 2010 (see FIG. 5). Also, the circuit board 250 of the control circuit section 25 is fixed to a fixing plate 2000 attached to the bottom plate 201 with a plurality of screws 2001 (see FIG. 5). The fixing plate 2000 is formed in a rectangular shape, and is attached to the bottom plate 201 so as to stand upright from the bottom plate 201. In other words, the circuit board 250 is housed in the box 200 in an upright state with the surface on which the plurality of circuit elements 251 are mounted being approximately parallel to the front plate 202 (see FIG. 5).

[0044] The substrate 261 on which the display unit 26 and the input receiving unit 27 are mounted is fixed to the center of the rear surface of the front panel 202 with multiple screws (see FIG. 5). The front panel 202 is provided with six windows. The display surfaces of the four 7-segment displays 260 of the display unit 26 are exposed from one window. The operating piece of the slide switch of the input receiving unit 27 is exposed from another window. The remaining four windows expose the operating surfaces of the four tact switches 270 of the input receiving unit 27, one each.

[0045] A first connector 24A and a cable gland 231 are attached to the left side plate 204 (see Figs. 3B and 4). The cable gland 231 supports and protects the power cable 23 (see Fig. 6) that is pulled out through a cable insertion hole provided in the left side plate 204. However, the power cable 23 is not shown in Figs. 1 to 4. On the other hand, a receptacle 22 and a second connector 24B are attached to the right side plate 205 (see Figs. 1, 2 and 4).

[0046] Furthermore, two female threads 2052 are provided in the rear portion of the recess 2051 at the upper end of the right side plate 205, lined up in the front-to-rear direction (see FIG. 4). These two female threads 2052 are both formed of hexagonal welded nuts welded to the right side plate 205. Furthermore, one female thread 2042 is provided in the rear portion of the recess 2041 at the upper end of the left side plate 204 (see FIG. 4). The female thread 2042 is formed of a hexagonal welded nut welded to the left side plate 204.

[0047] The cover 206 has a first cover portion 2061, a second cover portion 2062, a hinge mounting portion 2063, a first mounting piece 2064, a second mounting piece 2065, and a pair of fixing pieces 2066 (see FIGS. 2, 4, and 5). However, the first cover portion 2061, the second cover portion 2062, the hinge mounting portion 2063, the first mounting piece 2064, the second mounting piece 2065, the hinge mounting portion 2063, the first mounting piece 2064, the second mounting piece 2065, and the pair of fixing pieces 2066 are integrally formed by bending a single metal plate.

[0048] The first cover portion 2061 is formed in a rectangular shape. A rectangular first mounting piece 2064 protrudes downward from the rear end of the first cover portion 2061. A rectangular hinge mounting portion 2063 protrudes obliquely upward and forward from the front end of the first cover portion 2061 (see FIG. 2). A rectangular second cover portion 2062 protrudes forward from the front end of the hinge mounting portion 2063. A rectangular second mounting piece 2065 protrudes downward from the front end of the second cover portion 2062. The pair of fixing pieces 2066 are each formed in a rectangular shape and protrude obliquely downward and forward from the left end and right end of the hinge mounting portion 2063, one at a time.

[0049] Thus, the first mounting piece 2064 is screwed to the top of the rear plate 203, and the second mounting piece 2065 is screwed to the top of the front plate 202, thereby joining the box 200 and the cover 206, and the second housing 20 is assembled.

[0050] Here, the protective part 5 is attached to the front center of the first cover part 2061 (see Figs. 2, 4 and 5). The protective part 5 is constituted by a bushing. The bushing is made of a tubular synthetic resin molded body with a bellows-shaped peripheral wall, and is formed to be expandable and contractible in the axial direction. One axial end (lower end) of the protective part 5 is fitted into a through hole provided in the first cover part 2061. Then, the electric wire 212 drawn out from this through hole is inserted into the protective part 5.

[0051] (2-2) Light emitting unit The light emitting unit 1 includes two light source modules 10, four lens blocks 11, a first housing 12, and two panels 15 (see FIGS. 4 and 5).

[0052] (2-2-1) Light source module Each of the two light source modules 10 has a rectangular light source substrate 100 and six types of LEDs 101 with different light emission colors. The six types of LEDs 101 are LEDs with light emission colors of red, green, blue, amber, sky blue, and emerald green. Note that a plurality of each of the six types of LEDs 101 are mounted on the surface of the light source substrate 100. However, the types (light emission colors) and the number of LEDs 101 are merely an example.

[0053] These six types of LEDs 101 are mounted on the surface of the light source substrate 100 so as to be aligned in two rows along the longitudinal direction of the light source substrate 100 (see FIGS. 4 and 5). The LEDs 101 in each row are mounted so as to be aligned at equal intervals except for the central portion in the longitudinal direction of the light source substrate 100. Furthermore, each light source substrate 100 is provided with one positioning groove 1000 at the central portion in the longitudinal direction and at both ends in the longitudinal direction (see FIGS. 4 and 5). In the following description, the LEDs 101 aligned in the rear row may be referred to as first LEDs 101A, and the LEDs 101 aligned in the front row may be referred to as second LEDs 101B.

[0054] Among the multiple LEDs 101, the LEDs 101 of the same type (same light emission color) are electrically connected in series by printed wiring formed on the surface (upper surface) of the light source substrate 100. Both ends of these printed wiring are electrically connected to electric wires 212 of the power supply circuit unit 21 via multiple connectors 102 mounted on the front end portions at both ends of the light source substrate 100 in the longitudinal direction.

[0055] (2-2-2) Lens block All four lens blocks 11 have a common configuration (see FIG. 4).

[0056] Each lens block 11 has a first lens portion 111, a second lens portion 112, a base portion 110 connecting the first lens portion 111 and the second lens portion 112, a first attachment portion 113, a second attachment portion 114, and a positioning portion 115 (see FIGS. 4 and 5). The first lens portion 111, the second lens portion 112, the base portion 110, the first attachment portion 113, the second attachment portion 114, and the positioning portion 115 are integrally formed from a synthetic resin material having translucency such as polycarbonate resin or acrylic resin. However, each lens block 11 may be formed from inorganic glass such as quartz glass instead of the synthetic resin material.

[0057] First lens portion 111 controls the light distribution of light (hereinafter referred to as first light) emitted from multiple first LEDs 101A. Specifically, first lens portion 111 controls the light distribution so as to make the first light closer to parallel light (narrow the irradiation range).

[0058] The second lens unit 112 has an incident surface 1120 on which light (hereinafter referred to as second light) emitted from the multiple second LEDs 101B is incident, and an exit surface 1121 from which the second light incident from the incident surface 1120 is emitted. In addition, the incident surface 1120 and the exit surface 1121 have an inclined portion 1122 that is inclined in a direction (downward) approaching the light source substrate 100 as it moves away from the second LEDs 101B along the front-rear direction. Here, the portion of the second lens unit 112 behind the inclined portion 1122 controls the light distribution so as to make the second light closer to parallel light (narrow the irradiation range) like the first lens unit 111. On the other hand, the inclined portion 1122 of the second lens unit 112 has an incident surface 1120 and an exit surface 1121 that are planes parallel to each other (see FIG. 5). Therefore, the second light passes through the inclined portion 1122 almost straight.

[0059] Base portion 110 connects first lens portion 111 and second lens portion 112 in the front-rear direction (see FIG. 5). Positioning portions 115 are provided on the underside of base portion 110 at both ends in the longitudinal direction (left-right direction). Each of these positioning portions 115 is formed in a quadrangular prism shape and protrudes downward from the underside of base portion 110 (see FIG. 5).

[0060] Two first mounting portions 113 are provided on each lens block 11 (see FIG. 4). The two first mounting portions 113 are formed to have the same shape (rectangular flat plate shape) and the same dimensions. The two first mounting portions 113 each protrude rearward from the rear end of the first lens portion 111.

[0061] The second mounting portion 114 protrudes forward from the center in the longitudinal direction (left-right direction) at the front end of the inclined portion 1122. The second mounting portion 114 is formed in an L-shape when viewed in the longitudinal direction (left-right direction) of the lens block 11. The second mounting portion 114 is provided with two U-shaped screw insertion grooves 1140 that are open on the front end side (see FIG. 4).

[0062] (2-2-3) Panel The two panels 15 are formed in the shape of rectangular flat plates from a synthetic resin having translucency (e.g., acrylic resin or polycarbonate resin) (see FIG. 4). However, each panel 15 is formed by filling a filler (filling agent) such as titanium oxide, glass beads, or mica into the synthetic resin, so as to diffuse the transmitted light (the first light and the second light). Alternatively, each panel 15 may be configured to diffuse the transmitted light by providing an uneven or textured surface or both the front and back surfaces.

[0063] (2-2-4) First cabinet The first housing 12 has a frame 13 and a pair of end covers (a right end cover 14R and a left end cover 14L).

[0064] The frame 13 has a bottom wall 130, a first side wall 131, a second side wall 132, and a front wall 133 (see Figs. 4 and 5). The bottom wall 130 is formed in a rectangular shape. However, a downwardly protruding, angular gutter-shaped protruding portion 135 is integrally formed at the front portion of the bottom wall 130. The first side wall 131 is formed in a rectangular shape and protrudes upward from the rear end of the bottom wall 130. The second side wall 132 is formed in a rectangular shape and protrudes upward from the front end of the bottom wall 130 (the front end of the protruding portion 135). The front wall 133 is formed in a rectangular shape and protrudes inward from the respective tips (upper ends) of the first side wall 131 and the second side wall 132. The bottom wall 130, the first side wall 131, the second side wall 132, the front wall 133, and the protruding portion 135 are integrally formed by extrusion molding of aluminum or an aluminum alloy. However, the first side wall 131 and the second side wall 132 may protrude from the bottom surface of the bottom wall 130, rather than from the ends of the bottom wall 130. Also, the first housing 12 does not have to have the front wall 133.

[0065] Here, the second side wall 132 has a shorter length in the up-down direction than the first side wall 131 (see FIG. 5). That is, the front wall 133 is inclined so as to gradually approach the bottom wall 130 from the first side wall 131 toward the second side wall 132. In the embodiment, the inclination angle of the front wall 133 with respect to the bottom wall 130 is 20 degrees. Note that the inclination angle of the front wall 133 with respect to the bottom wall 130 is not limited to 20 degrees, but is preferably in the range of 15 degrees to 25 degrees.

[0066] Further, a groove (first mounting groove 136) is formed along the longitudinal direction (left-right direction) of the first side wall 131 at approximately the center in the up-down direction on the inner surface of the first side wall 131 (see FIGS. 4 and 5). The first mounting groove 136 is formed over the entire longitudinal direction of the first side wall 131 from the left end to the right end. The two first mounting portions 113 of each lens block 11 are inserted into the first mounting groove 136 (see FIG. 5).

[0067] Furthermore, a pair of grooves (second mounting grooves 137) are formed in the upper end portions of the inner surfaces of the first side wall 131 and the second side wall 132 in the longitudinal direction (left-right direction) of the first side wall 131 and the second side wall 132 so as to be aligned in the up-down direction (see FIG. 5). The pair of second mounting grooves 137 are formed in the entire longitudinal direction of the first side wall 131 and the second side wall 132 from the left end to the right end so as to be parallel to the front wall 133. Both ends of the panel 15 in the short direction (front-rear direction) are inserted into the pair of second mounting grooves 137 (see FIG. 5).

[0068] Meanwhile, a protrusion 135 is provided at the front end portion of the bottom wall 130 (see Figs. 4 and 5). The protrusion 135 is formed in a square gutter shape spanning the entire length of the bottom wall 130 from the left end to the right end in the longitudinal direction (left-right direction). The wall on the front side of the protrusion 135 is formed integrally with the second side wall 132. A through hole is provided in the center of the protrusion 135 in the longitudinal direction, and the other end (upper end) of the protection part 5 is fitted into this through hole.

[0069] Thus, the bottom wall 130 in the embodiment can be divided into a first region S1 excluding the protruding portion 135 and a second region S2 including the protruding portion 135. The light source module 10 is disposed in the first region S1, and the multiple electric wires 212 introduced from the through-holes are housed in the second region S2 (see FIG. 5).

[0070] The pair of end covers (the right end cover 14R and the left end cover 14L) are formed to be plane-symmetrical to each other. Therefore, in the following description, the left and right end covers 14R, 14L will be collectively referred to as end covers 14.

[0071] The end cover 14 has a trapezoidal cover body 140, a rectangular protruding piece 141, and a peripheral wall 142 protruding in the thickness direction (left-right direction) from the periphery of the cover body 140 and the protruding piece 141 (see FIG. 2). The protruding piece 141 protrudes downward from the lower front end of the cover body 140. The cover body 140, the protruding piece 141, and the peripheral wall 142 are integrally formed by aluminum die casting.

[0072] The end cover 14 is fixed to the longitudinal (left-right) ends of the frame 13 by a plurality of fixing screws 16 (three in this embodiment) (see Figs. 1 and 2). The longitudinal ends of the frame 13 are housed inside the peripheral wall 142 of the end cover 14 (see Figs. 2 and 5). A seal member 17 is disposed between the cover body 140 of the end cover 14 and the ends of the two panels 15 (see Figs. 4 and 5). The seal member 17 is formed in a rectangular shape from a highly elastic material such as silicone rubber. The seal member 17 seals the gap between the cover body 140 of the end cover 14 and the ends of the panels 15, thereby preventing foreign objects such as insects from entering between the two panels 15.

[0073] The first housing 12 is assembled by screwing the two end covers 14 to the frame 13. The first housing 12 has a rectangular opening 134 formed on a surface (front surface) facing the bottom wall 130. The opening 134 is surrounded by the front wall 133 and the peripheral walls 142 of the pair of end covers 14 (see FIG. 4). Then, light (first light and second light) emitted from the light source module 10 housed in the first housing 12 is emitted to the outside of the first housing 12 through the opening 134. However, if the first housing 12 does not have the front wall 133, the portion surrounded by the first side wall 131, the second side wall 132, and the respective tips of the pair of end covers 14 becomes the opening 134.

[0074] (2-2-5) Assembly of the light emitting unit Next, there will be described a procedure for assembling the light emitting unit 1. However, the assembly procedure described below is only an example, and some steps may be replaced, omitted, or added.

[0075] First, a worker performing assembly work (hereinafter, referred to as the worker) attaches two light source modules 10 to the first region S1 in the bottom wall 130 of the frame 13 (see FIG. 4). The worker screws the two light source modules 10 to the inner bottom surface of the bottom wall 130 so that the longitudinal direction of each of the two light source modules 10 coincides with the longitudinal direction of the first region S1 of the bottom wall 130. The worker also places an electrically insulating sheet material (thermal conductive sheet) between the inner bottom surface of the bottom wall 130 and each light source module 10.

[0076] Next, the worker electrically connects one end of the electric wires 212 to each of the multiple connectors 102 of each light source module 10. Then, the worker stores the multiple electric wires 212 in the protruding portion 135 of the frame 13 while being held by the multiple cable holders 122 (see FIG. 5 ). In addition, the worker draws the other end of the multiple electric wires 212 to the outside of the frame 13 through a through hole provided in the protruding portion 135.

[0077] Next, the worker attaches the four lens blocks 11 to the frame 13. The worker first inserts a pair of first mounting portions 113 of the lens block 11 into the first mounting groove 136 from the front of the frame 13. Then, the worker positions the lens block 11 with respect to the light source module 10 by inserting the positioning portion 115 of the lens block 11 into the positioning groove 1000 of the light source board 100 (see FIG. 5). Then, the worker attaches the second mounting portion 114 of the lens block 11 to the bottom wall 130 of the frame 13 by screwing. Specifically, the worker inserts mounting screws 116, which are so-called shoulder screws, one by one into a pair of screw insertion grooves 1140 of the second mounting portions 114, and screws them into screw holes provided in the bottom wall 130.

[0078] Next, the worker attaches the two panels 15 to the frame 13 by inserting both ends of the panels 15 in the short direction into the second mounting grooves 137 starting from one end (e.g., the right end) of the frame 13 in the long direction (see FIG. 5).

[0079] Finally, the worker screws the right end cover 14R to the right end of the frame 13 and screws the left end cover 14L to the left end of the frame 13, thereby forming the first housing 12.

[0080] With the above steps, assembly of the light emitting unit 1 is completed.

[0081] (2-3) Support part The support part 3 includes a hinge. In the embodiment, the support part 3 is configured with a hinge. The support part 3 (hinge) has a pair of blades (first mounting plate 31, second mounting plate 32) having one or more shaft tubes (first shaft tube 310, second shaft tube 320), and a shaft rod (pin 33) inserted into the shaft tube (see Fig. 2 and Fig. 5). The first mounting plate 31 is screwed to the outer lower surface of the protruding part 135 of the first housing 12. The second mounting plate 32 is screwed to the hinge mounting part 2063 of the second housing 20. The first mounting plate 31 has one shaft tube (first shaft tube 310) in the center. The second mounting plate 32 has two shaft tubes (second shaft tube 320). The two second shaft tubes 320 are provided on both ends of the second mounting plate 32, one on each side. Then, with the first barrel 310 disposed between the two second barrels 320, the pin 33 is inserted into the two second barrels 320 and one of the first barrels 310. As a result, the first housing 12 of the light emitting unit 1 is supported by the two support parts 3 to be rotatable relative to the second housing 20 of the power supply unit 2 (see FIG. 2).

[0082] (2-4) Connection The connection portion 4 includes a first connection portion 4A and a second connection portion 4B (see FIG. 2). The first connection portion 4A mechanically connects the rear end portion of the bottom wall 130 of the first housing 12 to the upper rear end portion of the right side plate 205 of the second housing 20. The second connection portion 4B mechanically connects the rear end portion of the bottom wall 130 of the first housing 12 to the upper rear end portion of the left side plate 204 of the second housing 20. Both the first connection portion 4A and the second connection portion 4B are formed of a metal plate.

[0083] The first connection part 4A has a first fixing part and an attachment piece 40. The first fixing part can fix the first housing 12 at each predetermined rotation angle within the rotation range of the first housing 12 relative to the second housing 20. Specifically, the first fixing part has a first plate-shaped part 41A and a first position fixing part 42A. The first plate-shaped part 41A has a rotation direction of the first housing 12 as its longitudinal direction, and has a plurality of fixing holes 43 provided along the longitudinal direction (see FIG. 2). The attachment piece 40 protrudes from the tip (upper end) of the first plate-shaped part 41A in the thickness direction of the first plate-shaped part 41A.

[0084] The fixing holes 43 are arranged in two rows along the longitudinal direction of the first plate-shaped portion 41A. However, the fixing holes 43 in the rear row are arranged between the fixing holes 43 in the front row in the short-side direction of the first plate-shaped portion 41A. In other words, when viewed from the short-side direction of the first plate-shaped portion 41A, the fixing holes 43 in the front row and the fixing holes 43 in the rear row are arranged alternately. The fixing holes 43 penetrate the first plate-shaped portion 41A in the thickness direction, but do not have to penetrate therethrough.

[0085] The first position fixing part 42A is inserted into one fixing hole 43 selected from the multiple fixing holes 43, and is fixed to the second housing 20. The first position fixing part 42A is configured with a so-called thumb screw. The first position fixing part 42A fixes the first connection part 4A to the second housing 20 by inserting a shaft part (male thread part) of the thumb screw into the fixing hole 43 and screwing the shaft part into the female thread part 2052 of the second housing 20 (right side plate 205).

[0086] The second connection part 4B has a second fixing part and an attachment piece 40. The second fixing part can fix the first housing 12 at any rotation angle within the rotation range of the first housing 12 relative to the second housing 20. Specifically, the second fixing part has a second plate-shaped part 41B and a second position fixing part 42B. The second plate-shaped part 41B is provided with an elongated hole 44 whose longitudinal direction is the rotation direction of the first housing 12 (see FIG. 2). The elongated hole 44 penetrates the second plate-shaped part 41B in the thickness direction, but does not have to penetrate therethrough. The attachment piece 40 protrudes in the thickness direction of the second plate-shaped part 41B from the tip (upper end) of the second plate-shaped part 41B.

[0087] The second position fixing part 42B is inserted into the elongated hole 44 and fixed to the second housing 20. The second position fixing part 42B is composed of a thumb screw. The second position fixing part 42B fixes the second connection part 4B to the second housing 20 by inserting a shaft part (male thread part) of the thumb screw into the elongated hole 44 and screwing the shaft part into the female thread part 2042 of the second housing 20 (left side plate 204).

[0088] Here, the first plate-shaped portion 41A and the second plate-shaped portion 41B have a scale portion 45 that indicates the rotation angle of the first housing 12 (light-emitting unit 1). The scale portion 45 of the first plate-shaped portion 41A is composed of grooves that are connected to every other adjacent fixing holes 43 among the multiple fixing holes 43 in the front row. The interval between each groove (scale portion 45) corresponds to a predetermined rotation angle (5 degrees) of the first housing 12 (light-emitting unit 1). The scale portion 45 of the second plate-shaped portion 41B is composed of two types of grooves, long and short, that are connected to the elongated holes 44 and are arranged alternately along the longitudinal direction of the elongated holes 44. The interval between the long groove and the short groove corresponds to half the interval of the scale portion 45 of the first plate-shaped portion 41A, specifically, to a rotation angle of 2.5 degrees of the first housing 12 (light-emitting unit 1). The grooves of the scale portion 45 penetrate the first plate-shaped portion 41A and the second plate-shaped portion 41B in the thickness direction, but they do not have to penetrate all the way through.

[0089] The pair of connection parts 4 (first connection part 4A and second connection part 4B) are attached to the first housing 12 by screwing each mounting piece 40 to the bottom wall 130 of the first housing 12 with two screws 46 (see Figure 2).

[0090] (2-5) Assembly of lighting equipment Next, a procedure for assembling the lighting device A1 will be described. However, the assembly procedure described below is only an example, and some steps may be replaced, omitted, or added.

[0091] First, the worker removes the cover 206 of the second housing 20 of the power supply unit 2 from the box 200. The worker inserts the multiple electric wires 212 drawn out from the first housing 12 into the protective part 5 already attached to the cover 206, and then fits the tip (upper end) of the protective part 5 into the through hole of the bottom wall 130 from which the electric wires 212 have been drawn. Then, the worker inserts the pin 33 into the first shaft cylinder 310 of the first mounting plate 31 attached to the first housing 12 and the second shaft cylinder 320 of the second mounting plate 32 attached to the cover 206, thereby rotatably connecting the first mounting plate 31 and the second mounting plate 32.

[0092] Next, the worker electrically connects the multiple electric wires 212 inserted through the protective section 5 to the output terminals of the six DC / DC converters 211 of the power supply circuit section 21, and then attaches the cover 206 to the box 200.

[0093] Finally, the worker mechanically connects the first housing 12 and the second housing 20 with the pair of connecting parts 4. Specifically, the worker screws the first position fixing part 42A, which has been inserted into one of the fixing holes 43 of the first connecting part 4A, into the female thread part 2052 of the right side plate 205. Similarly, the worker screws the second position fixing part 42B, which has been inserted into the elongated hole 44 of the second connecting part 4B, into the female thread part 2042 of the left side plate 204. With the above steps, the assembly of the lighting device A1 is completed.

[0094] (2-6) Adjusting the angle of the lighting device Next, a procedure for adjusting the angle of the illumination device A1 will be described.

[0095] First, the worker removes the first position fixing part 42A from the female thread part 2052 of the right side plate 205 and loosens the second position fixing part 42B. In this state, the first connection part 4A and the second connection part 4B are not fixed to the second housing 20, and the male thread part of the second position fixing part 42B is inserted into the elongated hole 44 of the second connection part 4B, so that the light-emitting unit 1 can rotate around the pins 33 of the pair of supports 3 as fulcrums.

[0096] Next, the worker holds the light-emitting unit 1 with one or both hands, rotates the light-emitting unit 1 to a desired angle while checking the scale portion 45, and then tightens the second position fixing portion 42B. In this state, the light-emitting unit 1 is temporarily fixed to the second housing 20 by the second connecting portion 4B.

[0097] Finally, the worker screws the first position fixing portion 42A into one of the two female thread portions 2052 provided on the right side plate 205 that overlaps with one of the fixing holes 43 of the first connection portion 4A.

[0098] Through the above steps, the angle adjustment of the illumination device A1 is completed.

[0099] (3) Modifications of the embodiment Next, some modified examples of the lighting device A1 according to the embodiment will be described. However, the basic configuration of the lighting device A1 in each modified example described below is common to the basic configuration of the lighting device A1 according to the embodiment. Therefore, the same reference numerals will be used to designate configurations common to the basic configuration of the lighting device A1 according to the embodiment, and illustrations and descriptions will be omitted as appropriate. In the following description, "substantially common configuration" means a configuration that is somewhat different in shape, size, etc., but has a common function. In addition, each modified example described below can be appropriately combined with the embodiment and other modified examples.

[0100] (3-1) Variation 1 The lighting device A1 of the first modification is characterized by the size of the light-emitting unit 1. As shown in Fig. 7, the light-emitting unit 1 of the first modification has a shorter longitudinal length dimension, approximately half that of the light-emitting unit 1 of the embodiment. Therefore, the light-emitting unit 1 of the first modification accommodates one light source module and two lens blocks in a first housing 12 that is half the length of the first housing 12 of the embodiment.

[0101] (3-2) Variation 2 The illumination device A1 of the second modification is a so-called upper horizon light that is suspended from a hanging pipe P1 (also called a baton) and irradiates light from above onto the horizon surface (see FIG. 8). The illumination device A1 of the second modification is different from the illumination device A1 of the embodiment in the structure of the left side plate 204 and the right side plate 205 of the second housing 20.

[0102] The left side plate 204 and the right side plate 205 in the second modification are provided with mounting pieces 2043, 2053 at their respective ends (upper ends in FIG. 8). A pair of screw insertion holes 2044 penetrate the mounting piece 2043 of the left side plate 204. The pair of screw insertion holes 2044 are elongated holes whose axial direction coincides with the longitudinal direction (front-rear direction) of the mounting piece 2043, and are arranged at a distance along the longitudinal direction of the mounting piece 2043. However, although not shown in the figure, a pair of screw insertion holes consisting of elongated holes also penetrates the mounting piece 2053 of the right side plate 205 so as to be aligned at a distance along the longitudinal direction.

[0103] Thus, the lighting device A1 of the second modification is attached to the hanging pipe P1 using a so-called U-bolt 207. The U-bolt 207 is a U-shaped bolt having male threads at both ends (see FIG. 8). That is, the male threads at both ends of the U-bolt 207 are inserted into the pair of screw insertion holes 2044, respectively, and two nuts 208 are fastened to the male threads, thereby attaching the U-bolt 207 to the mounting pieces 2043, 2053. Then, the two U-bolts 207 are hooked onto the hanging pipe P1, whereby the lighting device A1 of the second modification is suspended from the hanging pipe P1.

[0104] Here, the lighting device A1 of the second modification includes a light shielding unit 6. The light shielding unit 6 includes a rectangular first light shielding plate 61, a pair of second light shielding plates 62, and a pair of reflecting plates 63. The pair of second light shielding plates 62 are each formed in a trapezoidal shape and protrude forward from both ends of the first light shielding plate 61 in the longitudinal direction. The first light shielding plate 61 and the pair of second light shielding plates 62 are integrally formed by bending a metal plate such as an aluminum plate. The first light shielding plate 61 and the pair of second light shielding plates 62 are painted with a matte black paint.

[0105] Each of the pair of reflectors 63 is formed in a rectangular flat plate shape using a plate material made of synthetic resin or metal. The pair of reflectors 63 has a very high visible light reflectance on its surface due to a mirror finish or white coating. The pair of reflectors 63 are attached to the front surface of the first light shielding plate 61. That is, the pair of reflectors 63 can improve the light extraction efficiency by reflecting the light attenuated by the first light shielding plate 61 and the second light shielding plate 62 toward the front (horizon surface). However, in the lighting device A1 of the modified example 2, instead of providing the reflector 63, the front surface of the first light shielding plate 61 (the surface facing the light emitting unit 1) may be painted white.

[0106] The light-shielding unit 6 is attached to the lighting device A1 (light-emitting unit 1) by fastening the pair of second light-shielding plates 62 to the right end cover 14R and the left end cover 14L of the light-emitting unit 1 with screws.

[0107] The lighting device A1 of the first modification includes the light blocking unit 6, and thus can suppress light leaking toward the audience seats or the camera facing the cyclorama surface.

[0108] (3-3) Variation 3 In the illumination device A1 of the modified example 3, the light-emitting unit 1 in the illumination device A1 of the modified example 2 is replaced with the light-emitting unit 1 in the illumination device A1 of the modified example 1 (see FIG. 9).

[0109] The lighting device A1 of variant example 3 also has a shading unit 6. However, the shading unit 6 in variant example 3 differs in that the longitudinal dimension of the first shading plate 61 is approximately half that of the first shading plate 61 in variant example 2, and there is only one reflecting plate 63 attached to the first shading plate 61.

[0110] (4) Lighting control system embodiment A lighting control system C1 according to an embodiment (hereinafter, abbreviated as lighting control system C1) includes a plurality of lighting devices A1 and a control device B1 (see FIG. 10). However, the lighting control system C1 may include only one lighting device A1.

[0111] The lighting devices A1 are communicatively connected to a control device B1 in a daisy chain manner via a communication cable X1.

[0112] The control device B1 transmits a DMX signal to the lighting device A1 via the communication cable X1. However, the control device B1 can select a target lighting device A1 by specifying a DMX address assigned to the multiple lighting devices A1 and transmit the DMX signal to the selected lighting device A1.

[0113] The control device B1 used for lighting in a photography studio and stage lighting is generally called a dimming console. The dimming console (control device B1) is equipped with input devices such as a touch panel, a key fader, etc., and generates control commands to turn on / off, dim, and adjust the color of the lighting device A1 based on the input received by the input device, converts the generated control commands into DMX signals, and transmits them to each lighting device A1. Each lighting device A1 obtains control commands from the DMX signals received from the control device B1, and turns on / off, dims, and adjusts the color of the light-emitting unit 1 by adjusting the DC current supplied from the power supply unit 2 according to the obtained control commands.

[0114] (5) Advantages of the embodiment As described above, in the lighting device A1 (including the lighting device A1 according to the modified example, the same applies below), the length of the second side wall 132 of the first housing 12 (height H2 from the inner bottom surface of the bottom wall 130 to the upper end of the second side wall 132) is shorter (lower) than the length of the first side wall 131 (height H1 from the inner bottom surface of the bottom wall 130 to the upper end of the first side wall 131) (see FIG. 11). Note that, of the two panels 15, the lower panel is not shown in FIG. 11.

[0115] For example, when the length (height H1) of the first side wall 131 and the length (height H2) of the second side wall 132 are equal, as in the conventional example described in Patent Document 1, the second light emitted from the second LED 101B that passes through the range from dashed line α2 to dashed line α1 in Figure 11 is blocked by the second side wall 132.

[0116] In contrast, the lighting device A1 can emit the second light passing through the range from the dashed line α2 to the dashed line α1 in FIG. 11 to the outside of the first housing 12 through the opening 134 by making the height H2 of the second side wall 132 lower than the height H1 of the first side wall 131. In other words, the lighting device A1 has an advantage over the conventional configuration in that it can expand the irradiation range of the second light. Note that the height H2 of the second side wall 132 is desirably set to a height at which the angle between the mounting surface of the light source board 100 and the dashed line α2 is less than 10 degrees (preferably about 7.5 degrees).

[0117] Here, second lens unit 112 controls light distribution so as to narrow the irradiation range of the second light emitted rearward from optical axis L1 of second LED 101B, and controls light distribution so as to emit the second light emitted forward from optical axis L1 of second LED 101B almost as it is (see FIG. 11). On the other hand, first lens unit 111 controls light distribution so as to narrow the irradiation range of the first light emitted from first LED 101A (see dashed line β1 in FIG. 11). In other words, second lens unit 112 controls light distribution so as to be closer to second side wall 132 than first lens unit 111.

[0118] Also, the second lens portion 112 has an inclined portion 1122 at a portion located forward of the optical axis L1 of the second LED 101B (see FIG. 11). In the inclined portion 1122, an incident surface 1120 into which the second light is incident and an exit surface 1121 from which the second light is exited are parallel to each other. The inclined portion 1122 is inclined so as to approach the bottom surface of the bottom wall 130 as it moves away from the second LED 101B. The inclination angle of the inclined portion 1122 is equal to the inclination angle (20 degrees) of the front wall 133 (panel 15). In other words, the exit surface 1121 of the inclined portion 1122 and the surface of the panel 15 are parallel to each other.

[0119] Thus, since the illumination device A1 has the inclined portion 1122 provided in the second lens portion 112, there is an advantage that the light distribution of the second light can be efficiently controlled.

[0120] Here, first lens portion 111 and second lens portion 112 are integrally formed of a light-transmitting material as lens block 11. Therefore, illumination device A1 can improve the workability of assembly work compared to a case in which first lens portion 111 and second lens portion 112 are formed separately.

[0121] Further, the lens block 11 has a first attachment portion 113 attached to the first housing 12 on the side of the first lens portion 111, and a second attachment portion 114 attached to the first housing 12 on the side of the second lens portion 112. The second attachment portion 114 is provided closer to the inner bottom surface of the bottom wall 130 than the first attachment portion 113 in the vertical direction (see Figs. 5 and 11). That is, the illumination device A1 attaches the lens block 11 to the first housing 12 so as to sandwich the first lens portion 111 and the second lens portion 112 in the vertical direction and the front-rear direction. Therefore, the illumination device A1 can suppress misalignment between the first lens portion 111 and the first LED 101A and between the second lens portion 112 and the second LED 101B. If a positional misalignment occurs between first lens portion 111 and first LED 101A or between second lens portion 112 and second LED 101B, the light distribution characteristics of illumination device A1 may change.

[0122] Furthermore, the lighting device A1 provides the lens block 11 with a positioning portion 115 for positioning the first lens portion 111 and the second lens portion 112 with respect to the first LED 101A and the second LED 101B (see FIG. 11). The lighting device A1 can position the lens block 11 (the first lens portion 111 and the second lens portion 112) with respect to the light source module 10 (the first LED 101A and the second LED 101B) by inserting the positioning portion 115 into a positioning groove 1000 provided in the light source substrate 100. As a result, the lighting device A1 can suppress misalignment between the light source module 10 and the lens block 11, and suppress changes in the light distribution characteristics.

[0123] The bottom wall 130 of the first housing 12 has a first region S1 in which the light source module 10 is disposed, and a second region S2 between the first region S1 and the second side wall 132. A protruding portion 135 that protrudes in a direction (downward) away from the first region S1 along the up-down direction is provided in the second region S2 (see FIGS. 5 and 11). The lighting device A1 accommodates a power supply path (electric wire 212) for supplying power to the light source module 10 in the protruding portion 135 (see FIG. 5).

[0124] Therefore, since the lighting device A1 has a protrusion 135 in the second region S2 between the first region S1 in which the light source module 10 is mounted and the second side wall 132, the task of accommodating the electric wire 212 within the protrusion 135 can be made easier than when the protrusion 135 is provided in the first region S1.

[0125] The lighting device A1 also has a panel 15 that closes an opening 134 in a front wall 133 of the first housing 12. The panel 15 diffuses the first light emitted from the first LED 101A and the second light emitted from the second LED 101B and emits them from the opening 134. The lighting device A1 can improve the uniformity on the irradiation surface (horizon surface) by diffusing the first light and the second light through the panel 15. In particular, the first light and the second light each contain a mixture of multiple types of colors (six types in the embodiment), and the lighting device A1 can obtain a desired light color by mixing the first light and the second light (multiple types of colors) when they pass through the panel 15.

[0126] In addition, the lighting device A1 has the panel 15 arranged so as to be inclined in a direction approaching the bottom surface (the inner bottom surface of the bottom wall 130) from the first side wall 131 side toward the second side wall 132 side. Therefore, the lighting device A1 can close the opening 134, which is inclined in the same way, with the panel 15 without any gaps, thereby suppressing light leakage.

[0127] Here, the lighting device A1 has mounting portions to which the panel 15 is detachably attached, on the first side wall 131 and the second side wall 132. The mounting portions are grooves (second mounting grooves 137) provided along the longitudinal direction (left-right direction) of the first side wall 131 and the second side wall 132 in the upper end portions of the inner surfaces of each of the first side wall 131 and the second side wall 132 (see FIGS. 5 and 11).

[0128] Therefore, since the lighting device A1 has the panel 15 removably attached to the second mounting groove 137 provided in the first side wall 131 and the second side wall 132, the workability of mounting the panel 15 to the first housing 12 can be improved.

[0129] Further, the first side wall 131 and the second side wall 132 are each provided with two second mounting grooves 137 arranged at an interval in the vertical direction (see FIG. 5). That is, the lighting device A1 is provided with a pair of second mounting grooves 137 in the first side wall 131 and the second side wall 132 so that the two panels 15 are attached in a stacked manner in the vertical direction. This allows the lighting device A1 to sufficiently mix a plurality of types of color light while passing through the two panels 15. However, the lighting device A1 may be configured so that only one panel 15 covers the opening 134 (see FIG. 11).

[0130] Incidentally, edge E1 of opening 134 on the side (front side) of second side wall 132 of front wall 133 is higher in the vertical direction than the light emitting surface (upper surface) of second LED 101B and lower than the highest point G1 of exit surface 1121 of second lens portion 112 (see Figure 11).

[0131] Thus, since the lighting device A1 forms the second side wall 132 so as to satisfy the above-mentioned condition, it is possible to suppress blocking of the second light by the second side wall 132 while hiding the area below the light-emitting surface of the second LED 101B with the second side wall 132. As a result, the lighting device A1 can further expand the irradiation range of the second light.

[0132] The lighting device A1 includes a power supply circuit section 21 that supplies power to the light source module 10 to cause it to emit light. Specifically, the lighting device A1 has the first housing 12 rotatably supported by the support section 3 with respect to the second housing 20 that houses the power supply circuit section 21. Therefore, the lighting device A1 can improve the ease of installation compared to a case in which the power supply circuit section 21 is provided separately.

[0133] (6) Summary The lighting device (A1) according to the first aspect of the present disclosure includes a first light source (first LED 101A) that emits a first light, a second light source (second LED 101B) that emits a second light, a first lens unit (111) that controls the light distribution of the first light, a second lens unit (112) that controls the light distribution of the second light, and a housing (first housing 12). The housing accommodates the first light source, the second light source, the first lens unit (111), and the second lens unit (112). The housing has a bottom wall (130) and a plurality of side walls (first side wall 131, second side wall 132, right end cover 14R, left end cover 14L). The first light source and the second light source are arranged along the bottom surface of the bottom wall (130). The plurality of side walls protrude from the periphery of the bottom wall (130) along a first direction (up-down direction). The first light source and the second light source are arranged side by side along a second direction (front-rear direction) intersecting the first direction on the bottom surface of the bottom wall (130). Of the multiple side walls, a second side wall (132) on the second light source side in the second direction has a shorter length (H2) along the first direction than a first side wall (131) on the first light source side in the second direction.

[0134] The lighting device (A1) according to the first aspect can increase the amount of light that is not blocked by the second side wall (132) of the first housing (12) out of the second light that is light distribution controlled by the second lens portion (112). As a result, the lighting device (A1) according to the first aspect can expand the irradiation range of the light (second light).

[0135] An illumination device (A1) according to a second aspect of the present disclosure can be realized by combining with the first aspect. In the illumination device (A1) according to the second aspect, the second lens portion (112) preferably has an incident surface (1120) on which the second light is incident, and an exit surface (1121) from which the second light incident from the incident surface (1120) exits. The exit surface (1121) preferably has an inclined portion (1122) that is inclined so as to approach the bottom surface as it moves away from the second light source along the second direction.

[0136] The lighting device (A1) according to the second aspect can efficiently control the light distribution of the second light.

[0137] An illumination device (A1) according to a third aspect of the present disclosure can be realized by combining with the first or second aspect. The illumination device (A1) according to the third aspect preferably includes a lens block (11) formed of a light-transmitting material so as to integrally include a first lens portion (111) and a second lens portion (112).

[0138] The illumination device (A1) according to the third aspect can improve the efficiency of assembly work, as compared to a case in which the first lens portion (111) and the second lens portion (112) are formed separately.

[0139] An illumination device (A1) according to a fourth aspect of the present disclosure can be realized by combining with the third aspect. In the illumination device (A1) according to the fourth aspect, the lens block (11) preferably has a first attachment portion (113) attached to the housing on the side of the first lens portion (111) and a second attachment portion (114) attached to the housing on the side of the second lens portion (112). The second attachment portion (114) is preferably provided closer to the bottom surface than the first attachment portion (113) in the first direction.

[0140] In the illumination device (A1) according to the fourth aspect, the lens block (11) is attached to the first housing (12) so as to sandwich the first lens portion (111) and the second lens portion (112) from the first direction and the second direction. Therefore, the illumination device (A1) according to the fourth aspect can suppress misalignment between the first lens portion (111) and the first light source, and between the second lens portion (112) and the second light source.

[0141] An illumination device (A1) according to a fifth aspect of the present disclosure can be realized by combining with the third or fourth aspect. In the illumination device (A1) according to the fifth aspect, it is preferable that the lens block (11) further includes a positioning portion (115) that positions the first lens portion (111) and the second lens portion (112) with respect to the first light source and the second light source.

[0142] The illumination device (A1) according to the fifth aspect can suppress misalignment between the first light source and the second light source and the first lens portion (111) and the second lens portion (112), thereby suppressing changes in light distribution characteristics.

[0143] The lighting device (A1) according to the sixth aspect of the present disclosure can be realized by combining with any one of the first to fifth aspects. In the lighting device (A1) according to the sixth aspect, the bottom wall (130) preferably has a first region (S1) in which the first light source and the second light source are arranged, and a second region (S2) between the first region (S1) and the second side wall (132). The second region (S2) is preferably provided with a protruding portion (135) that protrudes in a direction away from the first region (S1) along the first direction. A power supply path (electric wire 212) for supplying power to the first light source and the second light source is preferably housed in the protruding portion (135).

[0144] The lighting device (A1) according to the sixth aspect makes it easier to accommodate the power supply line in the protrusion (135) than when the protrusion (135) is provided in the first area (S1).

[0145] An illumination device (A1) according to a seventh aspect of the present disclosure can be realized by combining with any one of the first to sixth aspects. In the illumination device (A1) according to the seventh aspect, it is preferable that the housing further includes a panel (15) disposed in front of the first lens portion (111) and the second lens portion (112). It is preferable that the panel (15) diffuses the first light emitted from the first lens portion (111) and the second light emitted from the second lens portion (112).

[0146] The illumination device (A1) according to the seventh aspect can improve the uniformity on the illuminated surface by diffusing the first light and the second light through the panel (15).

[0147] An illumination device (A1) according to an eighth aspect of the present disclosure can be realized by combining with the seventh aspect. In the illumination device (A1) according to the eighth aspect, the panel (15) is preferably disposed so as to be inclined in a direction approaching the bottom surface from the first side wall (131) side toward the second side wall (132) side.

[0148] In the lighting device (A1) according to the eighth aspect, the opening (134) which is inclined in the same manner can be completely covered by the panel (15), thereby preventing light leakage.

[0149] An illumination device (A1) according to a ninth aspect of the present disclosure can be realized by combining with the seventh or eighth aspect. In the illumination device (A1) according to the ninth aspect, the first side wall (131) and the second side wall (132) preferably have an attachment portion (second attachment groove 137) to which the panel (15) is detachably attached.

[0150] The lighting device (A1) according to the ninth aspect can improve the workability of mounting the panel (15) to the housing.

[0151] An illumination device (A1) according to a tenth aspect of the present disclosure can be realized by combining with the ninth aspect. In the illumination device (A1) according to the tenth aspect, the mounting portion preferably mounts the multiple panels (15) so as to overlap each other along the first direction.

[0152] The lighting device (A1) according to the tenth aspect can sufficiently diffuse the first light and the second light by mounting a plurality of panels (15).

[0153] An illumination device (A1) according to an eleventh aspect of the present disclosure can be realized by combining with any one of the first to tenth aspects. In the illumination device (A1) according to the eleventh aspect, it is preferable that the tip of the second side wall (132) is located higher in the first direction than the light emitting surface of the second light source and lower than the highest point of the exit surface (1121) of the second lens portion (112).

[0154] The lighting device (A1) according to the eleventh aspect can further expand the irradiation range of the second light.

[0155] An illumination device (A1) according to a twelfth aspect of the present disclosure can be realized by combining with any of the first to eleventh aspects. It is preferable that the illumination device (A1) according to the twelfth aspect further includes a power supply circuit unit (21) that supplies power to the first light source and the second light source.

[0156] The lighting device (A1) according to the twelfth aspect can improve the ease of installation compared to a case in which the power supply circuit section (21) is provided separately.

[0157] A lighting control system (C1) according to a thirteenth aspect of the present disclosure includes a lighting device (A1) according to any one of the first to twelfth aspects, and a control device (B1) that controls the lighting device (A1).

[0158] The lighting control system (C1) according to the thirteenth aspect can further expand the irradiation range of the second light of the lighting device (A1). [Explanation of symbols]

[0159] A1 Lighting equipment B1 Control device C1 Lighting Control System H2 Height S1 First Area S2 Second Area 11 Lens block 12 1st cabinet (cabinet) 14R Right end cover (side wall) 14L Left end cover (side wall) 15 Panel 21 Power supply circuit section 101A 1st LED (1st light source) 101B 2nd LED (2nd light source) 111 First lens section 112 Second lens section 113 First mounting part 114 Second mounting part 115 Positioning part 130 Bottom wall 131 First side wall (side wall) 132 Second side wall (side wall) 135 Protrusion 137 Second mounting groove (mounting part) 212 Electric wire (power supply line) 1120 Entrance plane 1121 Exit surface 1122 Slope

Claims

1. a first light source that emits a first light; a second light source that emits a second light; A first lens portion that controls a light distribution of the first light; A second lens portion that controls the distribution of the second light; a housing that accommodates the first light source, the second light source, the first lens unit, and the second lens unit; Equipped with The housing includes: a bottom wall along which the first light source and the second light source are disposed; a plurality of side walls protruding from the bottom wall along a first direction; having The first light source and the second light source are arranged side by side along a second direction intersecting the first direction on a bottom surface of the bottom wall, Among the plurality of side walls, a second side wall on the second light source side in the second direction has a shorter length along the first direction than a first side wall on the first light source side in the second direction. Lighting equipment.

2. the second lens portion has an incident surface on which the second light is incident and an exit surface from which the second light incident from the incident surface exits, the emission surface has an inclined portion that is inclined so as to approach the bottom surface as it moves away from the second light source along the second direction, 2. The lighting device according to claim 1.

3. a lens block formed of a light-transmitting material so as to integrally include the first lens portion and the second lens portion; 3. The lighting device according to claim 1 or 2.

4. The lens block comprises: a first attachment portion attached to the housing on a side of the first lens portion; a second attachment portion attached to the housing on a side of the second lens portion; having The second mounting portion is provided closer to the bottom surface than the first mounting portion in the first direction.

4. The lighting device according to claim 3.

5. The lens block further includes a positioning portion that positions the first lens portion and the second lens portion relative to the first light source and the second light source.

4. The lighting device according to claim 3.

6. the bottom wall has a first region in which the first light source and the second light source are arranged, and a second region between the first region and the second side wall, a protruding portion is provided in the second region and protrudes in a direction away from the first region along the first direction; A power supply path for supplying power to the first light source and the second light source is housed in the protrusion.

3. The lighting device according to claim 1 or 2.

7. The housing further includes a panel disposed in front of the first lens unit and the second lens unit, The panel diffuses the first light emitted from the first lens portion and the second light emitted from the second lens portion.

3. The lighting device according to claim 1 or 2.

8. The panel is disposed so as to be inclined in a direction approaching the bottom surface from the first side wall side toward the second side wall side.

8. The lighting device according to claim 7.

9. The first side wall and the second side wall have mounting portions to which the panel is detachably attached.

8. The lighting device according to claim 7.

10. The mounting portion mounts the plurality of panels so as to overlap each other along the first direction.

10. The lighting device of claim 9.

11. a tip end of the second side wall is located higher than a light emitting surface of the second light source and lower than a highest point of an exit surface of the second lens portion in the first direction; 3. The lighting device according to claim 1 or 2.

12. Further comprising a power supply circuit unit that supplies power to the first light source and the second light source.

3. The lighting device according to claim 1 or 2.

13. The lighting device according to claim 1 or 2; A control device for controlling the lighting device; Equipped with Lighting control system.

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