JP6846675B2 - LED module and lighting equipment - Google Patents

Description

The present invention relates to an LED module and a lighting fixture, and more specifically, to an LED module configured by mounting a plurality of LEDs on a substrate, and a lighting fixture provided with the LED module.

As a conventional example, the LED lighting device described in Patent Document 1 will be illustrated. The LED lighting device described in Patent Document 1 (hereinafter referred to as a conventional example) includes an LED lamp main body attached to a ceiling surface and a translucent cover attached to the LED lamp main body. The LED lamp body includes an LED element, a substrate on which the LED element is mounted, a circuit component for a lighting circuit mounted on the substrate to light the LED element, a heat dissipation member to which the substrate is attached, and a substrate via the heat dissipation member. It is equipped with a base member for holding the LED.

The substrate is formed in a substantially disk shape. A plurality of slits are provided between the central portion and the outer peripheral portion of the substrate. The substrate is divided into two areas, the inside (center side) and the outside (outer circumference side) of the slit. A plurality of LED elements are mounted on the outer peripheral side of the front surface of the substrate. A plurality of LED elements and circuit components for a lighting circuit are mounted on the central portion side of the front surface of the substrate. That is, the area on the outer peripheral side of the front surface of the substrate with respect to the slit is the mounting area for the LED element. Further, the area on the front surface of the substrate on the central side of the slit is a mixed mounting area of the LED element and the circuit component. The area on the outer peripheral side of the back surface of the substrate is a heat radiating area for radiating the heat generated by the LED element and the lighting circuit through the heat radiating member.

The base member has a hook blade that is electrically and mechanically connected to a wiring device such as a hook sealing body. The hook blade is provided with a pin-shaped blade terminal portion. The blade terminal portion of the hooking blade is inserted into the blade connection hole provided in the mixed mounting area of the substrate and fixed to the substrate by soldering. That is, the lighting circuit of the substrate is supplied with external power from the wiring device via the hook blade.

Japanese Unexamined Patent Publication No. 2015-159020

However, in the conventional example, the electric component (blade terminal portion of the hooking blade) is arranged in the mixed mounting area of the substrate on which the LED element is mounted. Therefore, in the above-mentioned conventional example, the mounting space of the LED element in the mixed mounting area where the LED element is mounted is reduced by the electric component, and it is difficult to improve the illuminance uniformity.

An object of the present invention is to provide an LED module and a lighting fixture capable of improving the illuminance uniformity.

The LED module according to one aspect of the present invention includes a substrate, a plurality of first LEDs and a plurality of second LEDs mounted on the surface of the substrate, and power for lighting the plurality of first LEDs and the plurality of second LEDs. Is provided with an input portion input from the outside and a fixing portion for fixing the substrate to the fixture body of the lighting fixture . The surface has a first region on which the plurality of first LEDs are mounted, a second region on which the plurality of second LEDs are mounted, and a third region that separates the first region and the second region. are doing. The input portion and the fixing portion are provided in the third region.

The lighting fixture according to one aspect of the present invention includes the LED module and a fixture main body that supports the LED module.

The LED module and the lighting fixture of the present invention have an effect that the illuminance uniformity can be improved.

FIG. 1 is a front view of an LED module according to an embodiment of the present invention. FIG. 2 shows a sub-board in the same LED module, and is a front view of the sub-board in a state where the first LED, the second LED, and the connector are not mounted. FIG. 3 shows a sub-board in the same LED module, and is a front view of the sub-board in a state where the first LED, the second LED, and the connector are mounted. FIG. 4 is a front view of a modification 1 of the LED module of the above. FIG. 5 is a front view of a modification 2 of the LED module of the above. FIG. 6A is a front view of the luminaire according to the embodiment of the present invention. FIG. 6B is a rear view of the lighting fixture of the same. FIG. 6C is a left side view of the lighting fixture of the same. FIG. 7 is an exploded perspective view of the same lighting fixture. FIG. 8 is a front view of the LED module, the insulating member, and the light guide member in the same lighting fixture. FIG. 9 is a cross-sectional view of the same lighting fixture with a part omitted. FIG. 10 is a cross-sectional view of the same lighting fixture with a part omitted. FIG. 11 is an operation explanatory view of the lighting fixture of the same.

Hereinafter, an embodiment of the LED module according to the present invention and an embodiment of the lighting fixture according to the present invention will be described in detail with reference to the drawings. The embodiments described below are merely examples of the embodiments of the present invention. The present invention is not limited to the following embodiments, and various modifications can be made depending on the design and the like as long as the effects of the present invention can be achieved.

As shown in FIG. 1, the LED module (Light Emitting Diode module 1) 1 of the present embodiment includes a substrate 10, a plurality of first LEDs 11 mounted on the surface of the substrate 10, and a plurality of second LEDs 12. The substrate 10 is formed in a substantially annular shape. However, the substrate 10 is divided into a plurality of (three in the illustrated example) sub-boards 100. Here, the three sub-boards 100 may be referred to as a first sub-board 100A, a second sub-board 100B, and a third sub-board 100C. Each of the three sub-boards 100 is formed in an arc shape. However, the three sub-boards 100 are all formed to have the same shape and dimensions. Each sub-board 100 is formed of, for example, a glass cloth-based epoxy resin substrate. Here, in each sub-board 100, the side near the center of the arc is referred to as the inside, and the side far from the center of the arc is referred to as the outside.

The plurality of first LEDs 11 are mounted on the inner surface of each sub-board 100 so as to be arranged concentrically from the inner side to the outer side. The plurality of first LEDs 11 are mounted on the surface of each sub-board 100 so as to be arranged in a triple concentric circle, but may be mounted so as to be arranged in a double or less or four or more concentric circles. The plurality of second LEDs 12 are mounted on the outer side of the surface of each sub-board 100 so as to be arranged in an arc shape. However, the plurality of second LEDs 12 may be mounted so as to be arranged concentrically in the second region S2 on the surface of the substrate 10. Here, a region on the surface of each sub-board 100 in which a plurality of first LEDs 11 are mounted concentrically in three layers is referred to as a first region S1. Further, on the surface of each sub-board 100, a region in which a plurality of second LEDs 12 are mounted side by side in an arc shape is referred to as a second region S2. Further, on the surface of each sub-board 100, a region between the first region S1 and the second region S2, that is, a region separating the first region S1 and the second region S2 is referred to as a third region S3 (see FIG. 1). ). The plurality of first LEDs 11 and the plurality of second LEDs 12 are white LEDs for general lighting. However, the plurality of first LEDs 11 and the plurality of second LEDs 12 may include a plurality of types of white LEDs for general lighting having different light colors, for example, white LEDs for general lighting of daylight color and light bulb color.

A plurality of (two in the illustrated example) fixing portions 101 are provided in the third region S3 of each sub-board 100. Each fixing portion 101 has a circular through hole that penetrates the sub-board 100 in the thickness direction. These fixing portions 101 are arranged so as to be arranged in an arc shape in the third region S3 of each sub-board 100. Further, in the third region S3 of each sub-board 100, two first positioning holes 102, two second positioning holes 103, and one third positioning hole 104 penetrate the sub-board 100 in the thickness direction. are doing. The first positioning hole 102, the second positioning hole 103, and the third positioning hole 104 are arranged so as to be arranged in an arc shape together with the two fixing portions 101.

Further, a plurality of (two in the illustrated example) receptacle connectors 130 are mounted in the third region S3 of each sub-board 100. One of the two receptacle connectors 130 is mounted on the first end portion 1001 in the longitudinal direction (circumferential direction) in the third region S3 of the sub-board 100. Another one of the two receptacle connectors 130 is mounted on the second end 1002 in the longitudinal direction (circumferential direction) in the third region S3 of the sub-board 100. In each sub-board 100, each of the two receptacle connectors 130 is mounted on the surface of each sub-board 100 via a conductor (copper foil) 14 formed on the surface of each sub-board 100. It is electrically connected to one LED 11 and a plurality of second LEDs 12 (see FIG. 2). Each receptacle connector 130 is electrically and mechanically connected to the respective receptacle connector 130 and a plug connector 131 that corresponds one-to-one with the plug connector 131 so that it can be inserted and removed. One connector 13 is composed of one receptacle connector 130 and one plug connector 131.

The plug connector 131 connected to the receptacle connector 130 at the first end 1001 (1001A) of the sub-board 100A is a plurality of plug connectors 131 connected to the receptacle connector 130 at the second end 1002 (1002B) of the sub-board 100B. It is electrically connected via the electric wire 132 of. Further, the plug connector 131 connected to the receptacle connector 130 of the second end 1002 (1002A) of the sub-board 100A is connected to the receptacle connector 130 of the first end 1001 (1001C) of the sub-board 100C. And are electrically connected via a plurality of electric wires 133. The plug connector 131 connected to the receptacle connector 130 at the first end 1001 (1001B) of the sub-board 100B is electrically connected to a plurality of electric wires 134. The plug connector 131 connected to the receptacle connector 130 at the second end 1002 (1002C) of the sub-board 100C is electrically connected to a plurality of electric wires 135. However, the plurality of electric wires 134 and the plurality of electric wires 135 are electrically connected to the output terminals of the power supply device that supplies electric power for lighting the plurality of first LEDs 11 and the plurality of second LEDs 12. That is, in the LED module 1, the connector 13 of the first end portion 1001B of the sub-board 100B and the connector 13 of the second end portion 1002C of the sub-board 100C correspond to the input portion. Further, the two connectors 13 connected by the plurality of electric wires 132 and the two connectors 13 connected by the plurality of electric wires 133 correspond to the connecting portions. However, when all the connectors 13 are directly electrically connected to the power supply device, all the connectors 13 correspond to the input unit. The plurality of first LEDs 11 and the plurality of second LEDs 12 mounted on the substrate 10 are lit by electric power supplied via the connector 13 corresponding to the input unit. The input unit and the connection unit do not necessarily have to be the connector 13. The input portion and the connection portion may be, for example, a pad (copper foil) formed on the surface of the substrate 10.

As described above, the LED module 1 mounts a plurality of connectors 13 serving as input portions or connection portions in the third region S3 on the surface of the substrate 10. Therefore, the LED module 1 can suppress a decrease in the mounting space of the LEDs in the first region S1 and the second region S2 as compared with the configuration in which the connector 13 is mounted in the first region S1 or the second region S2. .. As a result, the LED module 1 can improve the illuminance uniformity as compared with the configuration in which the connector 13 is mounted in the first region S1 or the second region S2.

Next, the structure of the substrate 10 (secondary substrate 100), particularly the surface structure, will be described in more detail. FIG. 2 is a front view of the sub-board 100 in a state where the plurality of first LEDs 11, the plurality of second LEDs 12, and the plurality of connectors 13 are not mounted. Further, FIG. 3 is a front view of the sub-board 100 in a state where a plurality of first LEDs 11, a plurality of second LEDs 12, and a plurality of connectors 13 are mounted.

In the first region S1 of the sub-board 100, a plurality of pairs of pads 15A and 15B and a conductor 14 (14A) for electrically connecting the plurality of pairs of pads 15A and 15B are formed (see FIG. 2). .. Each of the plurality of pairs of pads 15A and 15B is electrically connected to a pair of electrodes (anode electrode and cathode electrode) possessed by each of the plurality of first LEDs 11 having a one-to-one correspondence (see FIG. 3). Further, in the second region S2 of the sub-board 100, a plurality of pairs of pads 15C and 15D and a conductor 14 (14B) for electrically connecting the plurality of pairs of pads 15C and 15D are formed (FIG. 2). reference). Each of the plurality of pairs of pads 15C and 15D is electrically connected to a pair of electrodes (anode electrode and cathode electrode) possessed by each of the plurality of second LEDs 12 having a one-to-one correspondence (see FIG. 3). Further, a plurality of pads 15E and a plurality of conductors 14 (14C) are formed in the third region S3 of the sub-board 100 (see FIG. 2). Of the plurality of pads 15E, some of the pads 15E formed at the first end 1001 are electrically connected to the plurality of terminals 1300 of the receptacle connector 130 in a one-to-one correspondence. (See FIG. 3). Of the plurality of pads 15E, another part of the pads 15E formed at the second end 1002 is electrically connected to a plurality of terminals 1300 included in another receptacle connector 130 (FIG. FIG. 3). A part of the plurality of conductors 14C electrically connects a part of the plurality of pads 15E and the plurality of pads 15A and 15B in the first region S1 (see FIG. 2). Another part of the plurality of conductors 14C electrically connects another part of the plurality of pads 15E and the plurality of pads 15C and 15D in the second region S2 (see FIG. 2). ). Here, the plurality of conductors 14C formed in the third region S3 are a part of the plurality of conductors 14A formed in the first region S1 and one of the plurality of conductors 14B formed in the second region S2. It is integrally formed with the portion (see FIG. 2). The plurality of conductors 14C formed in the third region S3 are formed of a metal (copper foil) which is a good conductor of heat. That is, the plurality of conductors 14C are thermally connected to the plurality of first LEDs 11 and the plurality of second LEDs 12 via the plurality of conductors 14A and 14B and the plurality of pads 15A to 15D, respectively. The LED module 1 can dissipate heat generated while the plurality of first LEDs 11 and the plurality of second LEDs 12 are lit from the plurality of conductors 14C formed in the third region S3. That is, the LED module 1 promotes heat dissipation by forming a heat conductor (plurality of conductors 14C) in the third region S3 of the substrate 10 on which the plurality of first LEDs 11 and the plurality of second LEDs 12 are not mounted.

By the way, the shape of the substrate 10 of the LED module 1 is not limited to the ring shape. For example, the shape of the substrate 10 may be square or rectangular. FIG. 4 shows the LED module 1X of the modification 1 according to the present embodiment. The substrate 16 of the LED module 1X of the first modification is formed in a substantially square shape. The center of the substrate 16 is cut out in a circular shape. However, the substrate 16 is divided into a plurality of (4 in the illustrated example) sub-boards 160. Here, each of the four sub-boards 160 is formed in a substantially square shape. However, the four sub-boards 160 are all formed to have the same shape and dimensions. Each sub-board 160 is formed of, for example, a glass cloth-based epoxy resin substrate. Here, in each sub-board 160, the side near the center of the board 16 is referred to as the inside, and the side far from the center of the board 16 is referred to as the outside.

The plurality of first LEDs 11 are mounted on the inside of the surface of each sub-board 160 so as to be arranged in a matrix from the inside to the outside. The plurality of second LEDs 12 are mounted so as to be linearly arranged on the outer side of the surface of each sub-board 160. On the surface of each sub-board 160, the region on which the plurality of first LEDs 11 are mounted is the first region S1. Further, on the surface of each sub-board 160, the region on which the plurality of second LEDs 12 are mounted is the second region S2. Further, on the surface of each sub-board 160, the region between the first region S1 and the second region S2, that is, the region separating the first region S1 and the second region S2 is the third region S3 (see FIG. 4). ).

A plurality of (two in the illustrated example) receptacle connectors 130 are mounted in the third region S3 of each sub-board 160. In each sub-board 160, each of the two receptacle connectors 130 has a plurality of first LEDs 11 mounted on the surface of each sub-board 160 via a conductor (copper foil) formed on the surface of each sub-board 160. And are electrically connected to a plurality of second LEDs 12.

As described above, in the LED module 1X of the modification 1, a plurality of connectors 13 are mounted in the third region S3 on the surface of the substrate 16. Therefore, the LED module 1X of the modification 1 suppresses a decrease in the LED mounting space of the first region S1 and the second region S2 as compared with the configuration in which the connector 13 is mounted in the first region S1 or the second region S2. can do. As a result, the LED module 1X of the first modification can improve the illuminance uniformity as compared with the configuration in which the connector 13 is mounted in the first region S1 or the second region S2. Further, in the LED module 1X of the modified example 1, by forming a plurality of conductors in the third region S3, heat generated while the plurality of first LEDs 11 and the plurality of second LEDs 12 are lit is formed in the third region S3. It is possible to dissipate heat from multiple conductors.

Subsequently, FIG. 5 shows the LED module 1Y of the modification 2 according to the present embodiment. The substrate 17 of the LED module 1Y of the modification 2 is formed in a rectangular shape. However, the substrate 17 is divided into a plurality of (two in the illustrated example) sub-boards 170. Here, each of the two sub-boards 170 is formed in a rectangular shape. However, the two sub-boards 170 are formed to have the same shape and dimensions. Each sub-board 170 is formed of, for example, a glass cloth-based epoxy resin substrate. Here, in each sub-board 170, the side near the center of the board 17 is referred to as the inside, and the side far from the center of the board 17 is referred to as the outside.

The plurality of first LEDs 11 are mounted on the inside of the surface of each sub-board 170 so as to be arranged in a matrix from the inside to the outside. The plurality of second LEDs 12 are mounted so as to be linearly arranged on the outer side of the surface of each sub-board 170. On the surface of each sub-board 170, the region on which the plurality of first LEDs 11 are mounted is the first region S1. Further, on the surface of each sub-board 170, the region on which the plurality of second LEDs 12 are mounted is the second region S2. Further, on the surface of each sub-board 170, the region between the first region S1 and the second region S2, that is, the region separating the first region S1 and the second region S2 is the third region S3 (see FIG. 5). ).

A plurality of (two in the illustrated example) receptacle connectors 130 are mounted in the third region S3 of each sub-board 170. In each sub-board 170, each of the two receptacle connectors 130 has a plurality of first LEDs 11 mounted on the surface of each sub-board 170 via a conductor (copper foil) formed on the surface of each sub-board 170. And are electrically connected to a plurality of second LEDs 12.

As described above, in the LED module 1Y of the modification 2, a plurality of connectors 13 are mounted in the third region S3 on the surface of the substrate 17. Therefore, the LED module 1Y of the modification 2 suppresses a decrease in the LED mounting space of the first region S1 and the second region S2 as compared with the configuration in which the connector 13 is mounted in the first region S1 or the second region S2. can do. As a result, the LED module 1Y of the second modification can improve the illuminance uniformity as compared with the configuration in which the connector 13 is mounted in the first region S1 or the second region S2. Further, in the LED module 1Y of the second modification, by forming a plurality of conductors in the third region S3, heat generated while the plurality of first LEDs 11 and the plurality of second LEDs 12 are lit is formed in the third region S3. It is possible to dissipate heat from multiple conductors.

Next, the lighting fixture 9 of the present embodiment will be described in detail with reference to FIGS. 6 to 11. As shown in FIG. 7, the lighting fixture 9 includes a fixture main body 2 attached to a construction material (ceiling finishing material) and an LED module 1 attached to the front surface (lower surface) of the fixture main body 2. Further, the luminaire 9 preferably includes an insulating member 4 and a light guide member 5. Further, the luminaire 9 preferably includes a power supply unit 3, a lens block 6, a cover 7, and a glove 8. The lighting fixture 9 is a so-called ceiling light that is detachably attached to a hook ceiling body installed on the ceiling of a house. Therefore, in FIG. 7, the direction from the fixture main body 2 toward the LED module 1 is downward, and the direction from the LED module 1 toward the fixture main body 2 is upward.

The instrument main body 2 has a first main body 20 and a second main body 21. The first main body 20 and the second main body 21 are each formed in a substantially disk shape by a metal plate such as a steel plate. A circular hole 200 penetrates in the center of the first main body 20 in the vertical direction. The second main body 21 has a support base 210. The support base 210 is formed in a truncated cone shape and projects downward from the lower surface of the second main body 21. An oval hole 211 penetrates in the center of the support base 210 in the vertical direction. Further, a window 212 is opened next to the hole 211 in the support base 210. The second main body 21 is screwed to the first main body 20 so as to cover the lower surface of the first main body 20. That is, the instrument main body 2 is configured by connecting the first main body 20 and the second main body 21. The power supply unit 3 is housed inside the instrument main body 2.

The power supply unit 3 has a power supply device 30, a mounting base 31, an insulating cover 32, and a holder 33. The power supply device 30 is configured to convert AC power supplied from a commercial power source into DC power and supply it to the LED module 1. The power supply device 30 includes, for example, a power factor improving circuit, a step-down DC / DC converter, and the like. The power supply device 30 is preferably realized by a printed circuit in which circuit components such as a semiconductor switching element, an inductor, a diode, a capacitor, and a drive circuit of the semiconductor switching element are mounted on a printed wiring board.

The mounting base 31 is formed in a flat plate shape by a material having electrical insulation such as synthetic resin. An oval hole penetrates the mounting base 31 in the vertical direction. A long cylindrical partition wall 310 projecting downward is provided around a hole on the lower surface of the mounting base 31. The power supply device 30 is attached by being screwed to the lower surface of the mounting base 31.

The insulating cover 32 is formed in a flat plate shape smaller than the mounting base 31 by a material having electrical insulation such as synthetic resin. The insulating cover 32 is attached to the mounting base 31 so as to cover the power supply device 30 mounted on the lower surface of the mounting base 31 from below. That is, the insulating cover 32 electrically and mechanically protects the power supply device 30 from below.

The holder 33 has a tubular body 330 that supports the hook sealing adapter, and a fixing plate 331 that is integrally formed with the tubular body 330. The fixing plate 331 is formed of an oval flat plate by a synthetic resin. A circular hole penetrates the center of the fixing plate 331. The tubular body 330 is formed in a cylindrical shape by a synthetic resin. The tubular body 330 is integrally formed with the fixing plate 331 so as to project downward from the peripheral edge of the hole on the lower surface of the fixing plate 331. The fixing plate 331 of the holder 33 is screwed to the mounting base 31. The tubular body 330 of the holder 33 is arranged inside the partition wall 310 with the fixing plate 331 screwed to the mounting base 31.

The power supply unit 3 is attached to the first main body 20 by screwing the mounting base 31 to the first main body 20, and is housed in the instrument main body 2. The lower end of the partition wall 310 of the mounting base 31 is inserted into the hole 211 of the second main body 21. The hook sealing adapter is inserted into the tubular body 330 of the holder 33. The hook ceiling adapter is detachably attached to the hook ceiling body installed on the ceiling. The instrument body 2 is detachably attached to the hook sealing adapter. That is, the instrument main body 2 is detachably attached to the hook sealing body via the hook sealing adapter, and is supported by the hook sealing body via the hook sealing adapter. Further, the power supply device 30 of the power supply unit 3 is electrically connected to the LED module 1 via the electric wires 134 and 135. However, since the hook sealing body and the hook sealing adapter are well known in the past, detailed configuration illustration and description will be omitted.

The LED module 1 is attached to the fixture main body 2, more specifically, the support base 210 of the second main body 21. As shown in FIG. 7, the support base 210 has a plurality of (six in the illustrated example) screw holes 213 and a plurality of (six in the illustrated example) protrusions 214. These protrusions 214 mesh with the corresponding one of the plurality of first positioning holes 102 formed in each sub-board 100. The LED module 1 is fixed to the lower surface of the support base 210 by separately screwing the screws inserted into the fixing portions 101 of the three sub-boards 100 into the screw holes 213 corresponding to the fixing portions 101. .. That is, the LED module 1 surrounds the hole 211 of the second main body 21 on the lower surface of the support base 210 over the entire circumference. However, the window 212 of the second main body 21 is exposed from between the notches 105 formed in the first end portion 1001 and the second end portion 1002 of each sub-board 100. A nightlight and an infrared light receiving element included in the power supply unit 3 face the window 212. That is, the light emitted by the nightlight is radiated downward to the fixture body 2 through the window 212. Further, the infrared light receiving element can receive an infrared signal transmitted from the infrared remote controller through the window 212. The power supply device 30 preferably blinks, dims, and adjusts the LED module 1 in response to a command included in the infrared signal received by the infrared light receiving element.

The lens block 6 has an annular base 60 and a plurality of lenses 61. The plurality of lenses 61 are arranged concentrically in triplicate on the lower surface of the base 60. The base 60 and the plurality of lenses 61 are preferably integrally formed of a molded body of glass or a synthetic resin (acrylic resin or polycarbonate resin) having translucency. The base 60 has two first lugs 62 projecting from the inner peripheral edge toward the center and six second lugs 63 projecting outward from the outer peripheral edge. .. Circular holes penetrate the two first lugs 62 in the thickness direction (vertical direction), respectively. Cylindrical protrusions project upward on the upper surface of each of the six second lugs 63. Each of the protrusions of the six second lugs 63 meshes with the corresponding one of the six second positioning holes 103 provided on the substrate 10 (secondary substrate 100). That is, the lens block 6 is positioned with the LED module 1 by engaging the protrusions of the six second lugs 63 with the six second positioning holes 103 of the substrate 10 on a one-to-one basis. The lens block 6 is covered with the first region S1 of the substrate 10 of the LED module 1 from below by two screws inserted into the holes of the two first lugs 62, respectively, to form the instrument main body 2 (the second main body 21). It is screwed to the support base 210). Then, each of the plurality of lenses 61 is arranged so as to overlap with the corresponding one of the plurality of first LEDs 11 of the LED module 1 in the vertical direction. Each lens 61 is configured to collect the light emitted from one corresponding first LED 11.

As shown in FIG. 7, the light guide member 5 includes a light guide panel 50, a guide portion 51, and a plurality of (three in the illustrated example) mounting pieces 52. However, it is preferable that the light guide panel 50, the guide portion 51, and the plurality of mounting pieces 52 are integrally formed of a translucent synthetic resin such as an acrylic resin or a polycarbonate resin. The guide portion 51 is preferably formed in a cylindrical shape in which the opening diameter is gradually increased from top to bottom, that is, a so-called trumpet-shaped shape. The light guide panel 50 is formed in an annular shape. The inner peripheral edge of the light guide panel 50 is connected to the lower opening end of the guide portion 51 (the opening end having the larger diameter of the two opening ends) (see FIGS. 7 and 9). That is, the light guide member 5 is formed in a shape that projects outward from the second region S2 along the direction away from the first region S1 and the third region S3 when viewed from the thickness direction (vertical direction) of the substrate 10. (See FIG. 8).

It is preferable that a large number of irregularities are formed on the upper surface (or upper surface and lower surface) of the light guide panel 50. The light emitted from the light guide panel 50 is preferably diffused by a large number of irregularities when emitted from the upper surface (or upper surface and lower surface) of the light guide panel 50. The three mounting pieces 52 project toward the center from the upper opening end (the opening end having the smaller diameter of the two opening ends) of the guide portion 51. The three mounting pieces 52 are arranged at equal intervals along the circumferential direction of the guide portion 51 (see FIG. 7). Semi-circular mounting grooves 520 are formed at both ends of each mounting piece 52 in the longitudinal direction (circumferential direction). Further, a truncated cone-shaped protrusion protruding upward is formed at the center of the upper surface of each mounting piece 52 in the circumferential direction. The protrusions on each mounting piece 52 mesh with the corresponding one of the three third positioning holes 104 provided on the substrate 10 (sub-board 100). In the light guide member 5, the LED module 1 is formed by inserting six screws for screwing the substrate 10 to the instrument main body 2 (second main body 21) into the mounting grooves 520 of the three mounting pieces 52. It is attached to the instrument body 2 together with. The tip (upper end) of the guide portion 51 of the light guide member 5 faces the plurality of second LEDs 12 of the LED module 1 in the vertical direction (see FIG. 9). Therefore, almost all of the light emitted from the plurality of second LEDs 12 is incident on the guide portion 51 from the upper end surface (incident surface) of the guide portion 51. The light incident on the guide portion 51 travels in the guide portion 51 and reaches the light guide panel 50. The light that has reached the light guide panel 50 is gradually emitted to the outside of the light guide panel 50 while traveling inside the light guide panel 50 (see FIG. 11).

As shown in FIG. 7, the insulating member 4 has a reflecting portion 40 and a fixing portion 41. The reflecting portion 40 is preferably formed in a trumpet shape in which the opening diameter is gradually increased from top to bottom. The fixing portion 41 is formed in an annular shape. The outer peripheral edge of the fixed portion 41 is connected to the upper opening end (the opening end having the smaller diameter of the two opening ends) of the reflecting portion 40 (see FIG. 7). The reflecting portion 40 and the fixing portion 41 are preferably integrally formed of a synthetic resin. The reflecting unit 40 is configured to reflect visible light without transmitting it. Here, of the two side surfaces of the reflecting portion 40, the inner side surface (the side of the LED module 1 facing the first region S1) is referred to as a first reflecting surface 401 (see FIG. 9). Further, of the two side surfaces of the reflecting portion 40, the outer side surface (the side of the LED module 1 facing the second region S2) is referred to as a second reflecting surface 402 (see FIG. 9). The fixing portion 41 has a plurality of (six in the illustrated example) screw insertion holes 410. As shown in FIG. 8, these six screw insertion holes 410 are arranged so as to be arranged at equal intervals along the circumferential direction of the fixing portion 41. Further, a plurality of (three in the illustrated example) fixtures 42 are fixed to the lower surface of the fixing portion 41 so as to be arranged at equal intervals in the circumferential direction (see FIG. 7).

In the fixing portion 41 of the insulating member 4, the screws inserted into each of the six screw insertion holes 410 are provided in the screw holes 215 provided in the support base 210 of the second main body 21 corresponding to the screw insertion holes 410. It is fixed to the support base 210 by being screwed in. However, the fixing portion 41 is fixed to the support base 210 so as to sandwich the three mounting pieces 52 of the LED module 1 and the light guide member 5 with the support base 210 (see FIG. 9). That is, the three mounting pieces 52 of the light guide member 5 and the fixing portion 41 of the insulating member 4 are arranged so as to overlap only the third region S3 of the LED module 1 when viewed from the vertical direction (see FIG. 9). Here, the reflective portion 40 of the insulating member 4 faces the inner peripheral surface of the light guide panel 50 with an even gap in a state of being attached to the instrument main body 2 (second main body 21). Then, when a part of the light radiated from the second LED 12 and traveling in the guide portion 51 is emitted to the inner peripheral surface side (right side in FIG. 9) of the guide portion 51, it is reflected by the second reflecting surface 402 of the reflecting portion 40. Then, it is incident on the guide portion 51 again. Further, since the light emitted from the first LED 11 is reflected by the first reflecting surface 401 of the reflecting portion 40, it does not enter the guide portion 51 of the light guide member 5. That is, the insulating member 4 optically insulates the plurality of first LEDs 11 of the LED module 1 and the plurality of second LEDs 12.

The cover 7 is preferably formed of a synthetic resin such as polystyrene resin in a trumpet shape in which the opening diameter is gradually increased from the bottom to the top (see FIG. 7). The diameter of the upper open end of the cover 7 is substantially equal to the outer diameter of the instrument body 2. Further, the diameter of the opening end on the lower side of the cover 7 is substantially equal to the outer diameter on the lower side of the guide portion 51 of the light guide member 5. The cover 7 is attached to the lower surface of the instrument main body 2 by being screwed to the support base 210 of the second main body 21 (see FIG. 9). That is, the cover 7 is configured to cover the outer peripheral surface of the guide portion 51 of the light guide member 5 and the lower surface of the instrument main body 2 (the lower surface of the second main body 21).

The glove 8 has a glove main body 80 and a joint portion 81. As shown in FIG. 7, the glove body 80 is formed in a flat cylindrical shape having an open upper surface made of a translucent synthetic resin. The joint portion 81 is formed of a translucent synthetic resin into a trumpet shape in which the opening diameter is gradually increased from top to bottom. A plurality of (six in the illustrated example) protrusions 82 are provided on the inner peripheral surface of the upper portion of the joint portion 81 (see FIG. 7). These six protrusions 82 are arranged so as to be arranged at equal intervals along the circumferential direction. Each protrusion 82 projects inward from the inner peripheral surface of the upper portion of the joint 81. The open end of the glove body 80 is connected to the lower open end of the joint 81 (see FIG. 9). The glove 8 is preferably formed by joining the glove body 80 and the joint portion 81 by an appropriate method such as adhesion or heat welding.

Next, the procedure for assembling the lighting fixture 9 will be described. The worker who performs the assembly work assembles the instrument main body 2 by screwing the second main body 21 to the first main body 20 to which the power supply unit 3 is attached. Subsequently, the operator attaches the LED module 1, the lens block 6, the cover 7, the light guide member 5, and the insulating member 4 to the support base 210 of the instrument main body 2 by screwing them in order. Finally, the operator rotates the glove body 80 after inserting the joint portion 81 inside the insulating member 4, and attaches three of the six protrusions 82 to the three attachments attached to the insulating member 4. Hook on the corresponding one of the tools 42 (see FIG. 10). That is, the glove 8 is detachably attached to the instrument body 2 via the plurality of attachments 42 (see FIGS. 6A and 6C).

Here, the insulating member 4 preferably has a storage portion 411 for storing the connector 13. As shown in FIG. 10, the storage portion 411 is formed in a box shape so that a part of the fixing portion 41 projects downward. Therefore, the connector 13 and the electric wires 132 to 135 electrically connected to the connector 13 are electrically and mechanically protected by the insulating member 4 by being housed in the storage portion 411.

The luminaire 9 diffuses the light emitted from the plurality of first LEDs 11 by the globe 8 and irradiates the light downward (see FIG. 11). Further, the lighting fixture 9 guides the light radiated from the plurality of second LEDs 12 by the light guide member 5 and emits the light from both the upper and lower surfaces and the end faces of the light guide panel 50 (see FIG. 11). The light emitted from the light guide panel 50 irradiates not only the lower part of the luminaire 9 but also the ceiling surface and the wall surface. Here, the luminaire 9 realizes different light distribution characteristics for each light by optically insulating the light radiated from the plurality of first LEDs 11 and the light radiated from the plurality of second LEDs 12 by the insulating member 4. can do. Moreover, since the luminaire 9 arranges the fixing portion 41 of the insulating member 4 in the third region S3 of the substrate 10, the fixing portion 41 of the insulating member 4 causes the first region S1 and the second region on the surface of the substrate 10. It is possible to prevent the decrease of S2. Further, the luminaire 9 is radiated from the plurality of first LEDs 11 by reflecting a part of the light radiated from the plurality of first LEDs 11 toward the first region S1 by the first reflecting surface 401 of the insulating member 4. It is possible to suppress a decrease in light utilization efficiency. Furthermore, the luminaire 9 is radiated from the plurality of second LEDs 12 by reflecting a part of the light emitted from the light guide member 5 on the second reflecting surface 402 of the insulating member 4 and returning it to the light guide member 5. It is possible to suppress a decrease in light utilization efficiency.

The lighting fixture may include the LED module 1X of the modification 1 or the LED module 1Y of the modification 2. In the lighting fixture provided with the LED module 1X of the first modification, it is preferable that the fixture body, the insulating member, the light guide member, the lens block, the cover and the globe have a shape corresponding to the shape (square) of the LED module 1X. In the lighting fixture provided with the LED module 1Y of the second modification, it is preferable that the fixture body, the insulating member, the light guide member, the lens block, the cover and the globe have a shape corresponding to the shape (rectangle) of the LED module 1Y.

As described above, the LED modules 1, 1X and 1Y are for lighting the substrate 10, the plurality of first LEDs 11 and the plurality of second LEDs 12 mounted on the surface of the substrate 10, the plurality of first LEDs 11 and the plurality of second LEDs 12. It includes an input unit (connector 13) into which electric power is input from the outside. The surface (of the substrate 10) is a third region that separates the first region S1 on which the plurality of first LEDs 11 are mounted, the second region S2 on which the plurality of second LEDs 12 are mounted, and the first region S1 and the second region S2. Has an area. The input unit (connector 13) is provided in the third area S3.

Since the LED modules 1, 1X, and 1Y are configured as described above, the illuminance uniformity is improved as compared with the configuration provided in the input unit (connector 13) in the first region S1 or the second region S2. be able to.

In the LED modules 1, 1X and 1Y, the input unit is preferably a connector 13.

If the LED modules 1, 1X, and 1Y are configured as described above, the workability of connecting the electric wire to the input portion can be improved.

In the LED modules 1, 1X and 1Y, the substrate 10 is preferably divided into a plurality of sub-boards 100. It is preferable to include a plurality of connecting portions (connectors 13) for electrically connecting the plurality of first LEDs 11 and the plurality of second LEDs 12 mounted on the plurality of sub-boards 100. The plurality of connection portions (connectors 13) are respectively located at the ends (first end portion 1001 and second end portion 1002) where the plurality of sub-boards 100 are adjacent to each other in the third region S3 of the plurality of sub-boards 100. It is preferable that it is provided.

If the LED modules 1, 1X, and 1Y are configured as described above, the workability of the connection work between the plurality of connection portions (connectors 13) can be improved.

Further, as described above, the lighting fixture 9 includes the LED modules 1, 1X and 1Y, and the fixture main body 2 that supports the LED modules 1, 1X and 1Y.

Since the luminaire 9 is configured as described above, the illuminance uniformity can be improved.

The luminaire 9 preferably includes an insulating member 4 that optically insulates the plurality of first LEDs 11 and the plurality of second LEDs 12. It is preferable that the insulating member 4 is attached to the instrument main body 2 with the third region S3 of the substrate 10 sandwiched between the insulating member 4 and the instrument main body 2.

When the luminaire 9 is configured as described above, the light radiated from the plurality of first LEDs 11 and the light radiated from the plurality of second LEDs 12 are optically insulated by the insulating member 4, so that each light is emitted. Can realize different light distribution characteristics. Moreover, the luminaire 9 can prevent the first region S1 and the second region S2 on the surface of the substrate 10 from being reduced by the insulating member 4.

In the luminaire 9, the insulating member 4 preferably has an input portion or a storage portion 411 for accommodating an input portion and a plurality of connection portions (connectors 13).

If the luminaire 9 is configured as described above, the input portion or the input portion, the plurality of connecting portions (connectors 13), and the insulating member 4 can be arranged so as to overlap each other in the thickness direction of the substrate 10.

In the luminaire 9, the insulating member 4 preferably has a first reflecting surface 401 facing the first region S1 and a second reflecting surface 402 facing the second region S2. The first reflecting surface 401 is preferably configured to reflect a part of the light emitted from the plurality of first LEDs 11. The second reflecting surface 402 is preferably configured to reflect a part of the light emitted from the plurality of second LEDs 12.

When the luminaire 9 is configured as described above, a part of the light radiated from the plurality of first LEDs 11 and the plurality of second LEDs 12 is reflected by the first reflecting surface 401 and the second reflecting surface 402, thereby causing light. It is possible to suppress a decrease in utilization efficiency.

The luminaire 9 preferably includes a light guide member 5 that guides the light emitted from the plurality of second LEDs 12.

If the luminaire 9 is configured as described above, the light radiated from the plurality of second LEDs 12 can be guided to the light guide member 5 to realize various light distribution characteristics.

In the luminaire 9, the light guide member 5 is formed in a shape that projects outward from the second region S2 along the direction away from the first region S1 and the third region S3 when viewed from the thickness direction (vertical direction) of the substrate 10. It is preferable that it is.

If the luminaire 9 is configured as described above, the irradiation range of the light radiated from the plurality of second LEDs 12 can be expanded by the light guide member 5.

1,1X, 1Y LED module 2 Equipment body 4 Insulation member 5 Light guide member 9 Lighting equipment 10 Board 11 1st LED
12 2nd LED
13 Connector (input part, connection part)
40 Reflection part 100 Sub-board 401 First reflection surface 402 Second reflection surface 1001 First end part 1002 Second end part S1 First area S2 Second area S3 Third area

Claims (9)

A substrate, a plurality of first LEDs and a plurality of second LEDs mounted on the surface of the substrate, an input unit to which power for lighting the plurality of first LEDs and the plurality of second LEDs is input from the outside, and the above. It is equipped with a fixing part for fixing the board to the fixture body of the lighting fixture.
The surface has a first region on which the plurality of first LEDs are mounted, a second region on which the plurality of second LEDs are mounted, and a third region that separates the first region and the second region. And
An LED module characterized in that the input portion and the fixing portion are provided in the third region. The LED module according to claim 1, wherein the input unit is a connector. The board is divided into a plurality of sub-boards.
A plurality of connecting portions for electrically connecting the plurality of first LEDs and the plurality of second LEDs mounted on the plurality of sub-boards are provided.
The first or second aspect of the invention, wherein each of the plurality of connecting portions is provided at an end portion where the plurality of sub-boards are adjacent to each other in the third region of the plurality of sub-boards. LED module. A lighting fixture comprising the LED module according to any one of claims 1 to 3 and a fixture main body supporting the LED module. An insulating member that optically insulates the plurality of first LEDs and the plurality of second LEDs is provided.
The lighting fixture according to claim 4, wherein the insulating member is attached to the fixture main body with the third region of the substrate sandwiched between the insulating member and the fixture main body. The luminaire according to claim 5, wherein the insulating member has the input portion or a storage portion for accommodating the input portion and the plurality of connection portions. The insulating member has a first reflecting surface facing the first region and a second reflecting surface facing the second region.
The first reflecting surface is configured to reflect a part of the light radiated from the plurality of first LEDs.
The luminaire according to claim 5 or 6, wherein the second reflecting surface is configured to reflect a part of the light radiated from the plurality of second LEDs. The lighting fixture according to any one of claims 4 to 7, further comprising a light guide member that guides light emitted from the plurality of second LEDs. The light guide member is formed in a shape that projects outward from the second region along a direction away from the first region and the third region when viewed from the thickness direction of the substrate. Item 8. Lighting equipment according to item 8.

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