JP5810313B2 - LED module and lighting apparatus using the same - Google Patents

Description

  The present invention relates to an LED module and a lighting fixture using the same.

  Conventionally, for example, an illumination device that has been used as spot illumination for a bathtub or the like and uses an LED as a light source has been proposed (for example, Patent Document 1).

  As shown in FIGS. 21 and 22, the lighting device disclosed in Patent Document 1 is formed in a substantially cylindrical shape and a device main body 81 having a female screw groove 81 a on the inner peripheral surface, and a substantially cylindrical shape. And an adjustment portion 82 provided with a male screw groove 82a screwed into the female screw groove 81a of the apparatus main body 81 on the outer peripheral surface. Each of the female screw groove 81a and the male screw groove 82a is a multi-threaded screw.

  Further, in this lighting device, a substantially cylindrical inner tube portion 83 disposed on the inner peripheral side of the adjustment portion 82 and six LEDs 87 are disposed at equal intervals on a circumference centered on the axis of the device main body 81. And a light distribution portion 85 having a lens portion 88 formed in a convex lens shape. The lighting device includes a heat sink 86. Patent Document 1 describes that the inner cylinder portion 83 is made of aluminum.

  An outer annular convex portion 82b that protrudes outward is provided at the distal end portion (left end portion in FIG. 22) of the adjustment portion 82 so that the user can pick and rotate it. Further, in order to position the light distribution portion 85, an inner annular convex portion 82c that protrudes inward is provided at the tip of the adjustment portion 82.

  The light distribution unit 85 includes a lens array plate 85a formed in a disk shape, and a partition plate 85b erected on the lens array plate 85a. Further, the lens array plate 85 a is provided with the above-described lens portion 88 so as to be positioned on the optical axis of each LED 87 mounted on the substrate 84.

  The peripheral end portion of the lens array plate 85a is rotated and slid into an annular concave portion 91 (see FIG. 22) formed by a gap between the inner annular convex portion 82c of the adjustment portion 82 and the tip of the inner cylinder portion 83 (left end in FIG. 22). It is movably fitted.

  In the illuminating device described above, the adjustment unit 82 and the inner cylinder 83 constitute a moving cylinder for the apparatus main body 81 that is a fixed cylinder, and moves the light distribution unit 85 along the axis of the apparatus main body 81.

  The substrate 84 is provided with six substrate slits 84 a radially about the axis of the apparatus main body 81. Here, the partition plate 85b of the light distribution unit 85 is formed in a plate shape so as to extend radially from the center of the lens array plate 85a between the adjacent lens units 88 and to extend toward the substrate 84 side. And is inserted through the substrate slit 84a, which is a through hole. That is, in the above-described lighting device, the rotation stop mechanism that prevents the light distribution unit 85 from rotating even if the adjustment unit 82 is rotated by the partition plate 85b and the substrate slit 84a through which the partition plate 85b is inserted. It is composed.

  In Patent Document 1, a partition plate 85 b is provided so as to divide each lens unit 88 and each LED 87 separately, and each lens unit 88 is irradiated with light from other LEDs 87 other than the corresponding LED 87. It is described that it functions as a shielding plate that shields it from being carried out. Patent Document 1 also describes that the partition plate 85 b can function as a reflecting plate that reflects light from each LED 87 in the direction of each lens unit 88.

JP 2007-299679 A

  In the illumination device described above, the light distribution unit 85 can be moved along the axis of the device main body 81 without rotating. Therefore, in the above-described illumination device, the distance between each LED 87 and each lens unit 88 can be changed steplessly without shifting the positional relationship between each LED 87 and each lens unit 88. It is possible to adjust the range steplessly to a desired width.

  However, in the illuminating device described above, a gap 96 (see FIG. 22) is formed between the inner peripheral surface of the inner cylinder portion 83 and the tip of the partition plate 85b arranged radially from the center of the lens array plate 85a. Therefore, the light from each LED 87 is reflected by the inner peripheral surface of the aluminum inner cylinder portion 83 and enters the other lens portion 88 located next to the lens portion 88 located on the optical axis of each LED 87. As a result, unevenness in illuminance may occur on the irradiated surface.

  The present invention has been made in view of the above-described reasons, and an object of the present invention is to provide an LED module capable of changing the light irradiation range and suppressing uneven illuminance on the irradiated surface and a lighting fixture using the same. It is to provide.

  The LED module of the present invention is an LED module that can change the distance between a wiring board on which a plurality of LEDs are mounted and a lens unit capable of controlling the light distribution of light emitted from each LED within a specified range. The lens unit includes a plurality of lens units that individually control the light distribution of the light emitted from each of the LEDs, and each LED on the mounting surface side of the LED on the wiring board. A first light-shielding wall for preventing light emitted from the light from entering the other lens unit other than the lens unit corresponding to each of the LEDs is provided so as to surround the LED. Second for preventing light radiated from the LED other than the LED corresponding to each of the lens portions from entering the lens portion on the periphery of the lens portion on the light incident surface side. Shading wall A total height dimension of a height dimension of the first light shielding wall and a height dimension of the second light shielding wall is larger than an upper limit of the specified range, and a height dimension of the first light shielding wall And the height dimension of the second light shielding wall is set to be smaller than the lower limit of the prescribed range, and a part of the first light shielding wall and the second light shielding wall are arranged in the direction in which the adjacent LEDs are arranged. It arrange | positions so that it may overlap.

  In this LED module, it is preferable that the second light shielding wall is disposed outside the first light shielding wall.

  In this LED module, the first light shielding wall reflects on the side surface on the LED side the light emitted from the LED to reflect the light incident surface side of the lens unit corresponding to each LED. It is preferable that a surface is provided.

  In this LED module, each of the lens portions is formed in a convex curved shape on the light exit surface side, and a diffusing portion for diffusing light from the LED corresponding to the lens portion is provided on the periphery of the light exit surface. It is preferable to be formed.

  In this LED module, a light source unit having the wiring board, a frame body that holds the light source unit, a cylindrical rotor that is disposed inside the frame body and is rotatably held by the frame body, It is preferable that the rotation unit is provided with a conversion mechanism that allows the lens unit to move along the central axis of the rotor by rotating in the outer circumferential direction of the rotor.

  The lighting fixture of the present invention includes the LED module and a fixture main body for holding the LED module.

  In the LED module of the present invention, the irradiation range of light can be changed, and the illuminance unevenness of the irradiated surface can be suppressed.

  In the lighting fixture of this invention, the lighting fixture using the LED module which can change the irradiation range of light and can suppress the illumination intensity nonuniformity of a to-be-irradiated surface can be provided.

In the LED module of Embodiment 1, (a) is a schematic cross-sectional view showing a state in which the lens unit is closest to the light source unit, and (b) is a schematic cross-sectional view showing a state in which the lens unit is farthest from the light source unit. It is a disassembled perspective view of a LED module same as the above. The holder in an LED module same as the above is shown, (a) is the perspective view seen from the front side, (b) is the perspective view seen from the rear side. The frame in an LED module same as the above is shown, (a) is the perspective view seen from the front side, (b) is the perspective view seen from the back side. The lens unit in an LED module same as the above is shown, (a) is the perspective view seen from the front side, (b) is the perspective view seen from the rear side. The rotator in an LED module same as the above is shown, (a) is a perspective view seen from the front side, (b) is a perspective view seen from the rear side. It is explanatory drawing explaining the method of attaching a rotor to a frame regarding the LED module same as the above. (A) is explanatory drawing explaining the method to attach a lens unit to a rotor, (b) is AA sectional drawing of (a) regarding the LED module same as the above. (A) (b) is explanatory drawing explaining the method to attach a light source part to a frame regarding the LED module same as the above, (c) is DD sectional drawing of (b). It is explanatory drawing explaining the state which rotated the rotor about the LED module same as the above. It is another explanatory drawing explaining the state which rotated the rotor regarding the LED module same as the above. It is another explanatory drawing explaining the state which rotated the rotor about the LED module same as the above. (A) is a perspective view which shows a state in which the lens unit is farthest from the light source unit, and (b) is a sectional view taken along line BB in (a), regarding the LED module same as above. It is a perspective view which shows the state which rotated the rotor about the LED module same as the above. (A) is a perspective view which shows the state which the lens unit approached the light source part most about the LED module same as the above, (b) is CC sectional drawing of (a). It is explanatory drawing explaining the method to attach an LED module same as the above to an instrument main body. It is a perspective view which shows the structural example of the lighting fixture of Embodiment 1. FIG. It is a perspective view which shows the other structural example of the lighting fixture same as the above. In the LED module of Embodiment 2, (a) is a schematic sectional view showing a state where the lens unit is closest to the light source unit, and (b) is a schematic sectional view showing a state where the lens unit is farthest from the light source unit. In the LED module of Embodiment 3, (a) is a schematic sectional view showing a state in which the lens unit is closest to the light source unit, and (b) is a schematic sectional view showing a state in which the lens unit is farthest from the light source unit. It is a disassembled perspective view of the illuminating device of a prior art example. It is a schematic sectional drawing which shows the state which kept the lens array board away from LED in the illuminating device same as the above.

(Embodiment 1)
Hereinafter, the LED module of this embodiment will be described with reference to FIGS.

  The LED module 10 of the present embodiment includes a single wiring board 11 on which a plurality of (in this embodiment, seven) LEDs 9 are mounted, and a lens unit 3 that can control the light distribution of the light emitted from each LED 9. Can be changed within a specified range. The LED module 10 includes a light source unit 1 having the above-described wiring board 11, the above-described lens unit 3, a frame body 2 (see FIG. 2) that holds the light source unit 1, and a frame disposed inside the frame body 2. A cylindrical rotor 4 (see FIG. 2) that is rotatably held by the body 2 is provided. Further, the LED module 10 includes a conversion mechanism 8 (see FIG. 2) that allows the lens unit 3 to move along the central axis of the rotator 4 when the rotator 4 rotates in the outer circumferential direction of the rotator 4. ).

  As shown in FIG. 2, the light source unit 1 includes a plurality of LEDs 9 described above, a single wiring board 11 on which the plurality of LEDs 9 are mounted, and a pair of electric wires 12 electrically connected to the wiring board 11. 12 are provided. In FIG. 2, five of the seven LEDs 9 are visible. Further, the electrical connection relationship of the plurality of LEDs 9 may be a series connection or a parallel connection, or may be a combination of a series connection and a parallel connection.

  As the LED 9, for example, an LED chip that emits blue light (hereinafter referred to as a blue LED chip) and a phosphor made of a yellow phosphor that emits broad yellow light that is excited by the blue light emitted from the blue LED chip. A white LED that obtains white light in combination can be used. Such an LED 9 includes, for example, a blue LED chip (not shown), one mounting substrate 9a on which the blue LED chip is mounted, and a first light-transmitting material that covers the blue LED chip and contains a yellow phosphor. And a color conversion unit (not shown) made of a material. The number of blue LED chips mounted on one mounting substrate 9a may be one or plural. As the first light transmissive material, for example, a silicone resin, an epoxy resin, glass, or the like can be used.

  Further, the LED 9 has a convex lens-shaped sealing portion 9b made of a second translucent material (for example, silicone resin, epoxy resin, glass, etc.) that seals the blue LED chip and the color conversion portion. .

  Here, the phosphor of the LED 9 is not limited to the yellow phosphor, and, for example, a red phosphor and a green phosphor may be used. Alternatively, the LED 9 may be a white LED that obtains white light by combining an LED chip that emits purple to near-ultraviolet light and a red phosphor, a green phosphor, and a blue phosphor. Further, the LED 9 may be a white LED that obtains white light by combining an LED chip that emits red light, an LED chip that emits green light, and a blue LED chip.

  The wiring board 11 is formed of, for example, a metal base printed wiring board, and is formed in a polygonal shape (an octagonal shape in the present embodiment) in plan view. In addition, in the LED module 10 of this embodiment, although a metal base printed wiring board is used as the wiring board 11, it is not restricted to this, For example, the printed wiring board formed with the insulating base material which consists of glass epoxy resins etc. A ceramic substrate or the like may be used. In the present embodiment, the outer peripheral shape of the wiring board 11 is an octagonal shape in plan view, but is not limited thereto, and may be, for example, a quadrangular shape, a pentagonal shape, a circular shape, or the like.

  A pair of first electrode portions (not shown) that can be electrically connected to each LED 9 is formed on the wiring board 11 on the mounting surface side (lower side in FIG. 2) of each LED 9 in the wiring board 11. Each is formed by a part of a conductor pattern (not shown). Here, in each LED 9, the anode electrode is electrically connected to one of the pair of first electrode portions, and the cathode electrode is electrically connected to the other.

  In addition, a reflective layer (not shown) made of a white resist layer or the like covering most of the portions other than each LED 9 and each pair of first electrode portions is formed on the mounting surface side of each LED 9 on the wiring board 11. ing. Thereby, in the LED module 10 of this embodiment, it becomes possible to suppress that the light radiated | emitted from each LED9 is absorbed by the wiring board 11. FIG.

  In addition, on the mounting surface side of each LED 9 on the wiring board 11, a pair of second electrode portions (not shown) for supplying power to the plurality of LEDs 9 is formed by a part of the conductor pattern. Here, each electric wire 12 is a covered electric wire in which a conductor (not shown) that can be electrically connected to each second electrode portion is covered with an insulating coating portion 12b (see FIG. 2). A portion of the conductor that is electrically connected to the portion is exposed.

  In addition, each of the conductors of each electric wire 12 is electrically connected to each second electrode portion by, for example, a joint portion 32 made of solder.

  Further, on the side opposite to the mounting surface side of each LED 9 in the wiring board 11 (upper side in FIG. 2), a heat dissipation sheet 14 having electrical insulation and thermal conductivity is disposed. Thereby, in the LED module 10 of this embodiment, it becomes possible to efficiently radiate the heat generated in the light source unit 1 to the appliance body 20 (see FIG. 16) side that holds the LED module 10 through the heat dissipation sheet 14. .

  Further, in the LED module 10 of the present embodiment, the light source unit 1 has a holder 13 that can hold the wiring board 11 described above.

  The holder 13 can be made of a synthetic resin material (for example, polybutylene terephthalate (PBT)). In the LED module 10 of the present embodiment, the holder 13 is made of a black synthetic resin material.

  The holder 13 has a bottomed cylindrical shape (a bottomed cylindrical shape in this embodiment) for housing the wiring board 11 and outwards on the opening side (upper side in FIG. 2) of the holder main body 13a. And an extended flange 13b.

  The depth dimension of the holder main body 13 a is set slightly larger than the thickness dimension of the wiring board 11. Further, the inner peripheral shape of the holder main body 13 a is set slightly larger than the outer peripheral shape of the wiring board 11.

  On the inner bottom surface of the holder main body 13a, ribs 13c (see FIG. 3) for positioning the wiring board 11 in the outer peripheral direction of the holder main body 13a are spaced apart from each other in the outer peripheral direction of the holder main body 13a (in this embodiment, 2 points). Here, the peripheral end portion of the wiring board 11 is formed with a notch 11a at each of the positions corresponding to the ribs 13c of the holder body 13a in a state where the wiring board 11 is housed in the holder body 13a. . Thereby, in the LED module 10 of this embodiment, it becomes possible to position the wiring board 11 in the outer peripheral direction of the holder main body 13a in the holder main body 13a. In FIG. 3, one of the two ribs 13c is visible. Moreover, in FIG. 2, one notch part 11a is visible among the two notch parts 11a.

  Further, on the inner bottom surface of the holder main body 13a, holding claws 13d (see FIG. 3) for holding the peripheral end of the wiring board 11 are spaced apart from each other in the outer peripheral direction of the holder main body 13a (in this embodiment, 2). Project). Here, at the peripheral end portion of the wiring board 11, a protruding piece 11 b for each holding claw 13 d to hold the wiring board 11 is provided integrally with the wiring board 11. Thereby, in the LED module 10 of this embodiment, the holder 13 can hold the wiring board 11. Moreover, in the LED module 10 of this embodiment, the through-hole 13f is formed in the bottom part of the holder main body 13a in the vicinity of each holding claw 13d, and it is confirmed that each holding claw 13d holds the wiring board 11. Is possible.

  Further, on the side of the holder main body 13a, a lead-out portion 13e for leading the pair of electric wires 12 and 12 electrically connected to the wiring board 11 to the outside is provided. Here, a plurality of window holes 13g (see FIG. 3) for exposing the respective LEDs 9 mounted on the wiring board 11 in a state where the holder 13 holds the wiring board 11 are formed at the bottom of the holder main body 13a.

  Engagement claws 13k (see FIG. 3) for the frame body 2 to engage the holder 13 are spaced apart from each other in the outer peripheral direction of the holder main body 13a (in this embodiment, in the flange portion 13b of the holder 13). 2 points). Each engagement claw 13k can be elastically deformed in one direction along the bottom surface of the holder body 13a.

  Further, a protruding wall 13m (see FIG. 3) protruding to the opposite side of the wiring board 11 is provided integrally with the flange portion 13b on the inner peripheral portion of the flange portion 13b.

  The frame 2 can be made of, for example, a synthetic resin material (PBT or the like). In addition, in the LED module 10 of this embodiment, the frame 2 is comprised with the black synthetic resin material.

  The frame 2 has a plate-like (disc-like in this embodiment) bottom wall 2a having a circular opening hole in the center, and the light source unit 1 side (in FIG. 2) from the outer periphery of the bottom wall 2a. A cylindrical first side wall 2b projecting toward the upper side) and a cylindrical second side wall 2c projecting from the inner peripheral edge of the opening hole toward the side opposite to the light source unit 1 side. Configured.

  On the inner side surface of the first side wall 2b, a plurality (two in this embodiment) of engagement holes 2g (see FIG. 4) with which the respective engagement claws 13k of the holder 13 are engaged are formed. In the LED module 10 according to the present embodiment, the person aligns each engagement claw 13k of the holder 13 with the position of each engagement hole 2g of the first side wall 2b, and then pushes in the holder 13 so that each engagement claw 13k. Are respectively engaged with the respective engagement holes 2g and the holder 13 can be held by the frame body 2 (see FIG. 9). For example, the light source unit 1 and the frame body can be used without using a fixing tool such as a screw. 2 can be assembled. Here, on the inner side surface of the first side wall 2b, introduction portions 2h (see FIG. 4) for introducing the respective engagement claws 13k of the holder 13 into the respective engagement holes 2g are provided in the respective engagement holes 2g. It is formed in the vicinity. Thereby, in the LED module 10 of this embodiment, it becomes possible to improve the workability | operativity which makes each engagement claw 13k of the holder 13 each engage with each engagement hole 2g of the 1st side wall 2b. In FIG. 4, one engagement hole 2g is visible out of the two engagement holes 2g. Further, in the LED module 10 of the present embodiment, each engagement claw 13k protrudes from the holder 13 and each engagement hole 2g is formed in the frame 2, but each engagement claw 13k is formed in the frame 2. The engaging holes 2g may be formed in the holder 13 by projecting.

  Further, a recess 2j for positioning the holder 13 in the outer peripheral direction of the frame body 2 is provided at an end of the first side wall 2b opposite to the second side wall 2c (upper side in FIG. 2) (see FIGS. 2 and 2). 4 and the like) are formed at a plurality of locations (four locations in the present embodiment) separated in the outer peripheral direction of the frame body 2. Here, the flange 13b of the holder 13 has a protruding piece 13n (see FIGS. 2 and 3, etc.) at each of the positions corresponding to the recesses 2j of the first side wall 2b when the holder 13 is held by the frame 2. ) Is projected. Thereby, in the LED module 10 of this embodiment, it becomes possible to prevent the holder 13 from rotating in the outer peripheral direction of the frame body 2.

  The lens unit 3 can be made of a translucent material (for example, acrylic resin, glass, etc.). In the LED module 10 of the present embodiment, the lens unit 3 is made of acrylic resin (such as methacrylic resin (PMMA)).

  The lens unit 3 includes a plate-like (disk-like in this embodiment) base 3a and a plurality of lens units that individually control the light distribution of the light emitted from each LED 9 formed on the base 3. 3b.

  In the base 3a, the lens portion 3b described above is integrally formed at each of the portions facing the LEDs 9 mounted on the wiring board 11. In the LED module 10 of the present embodiment, the light exit surface side of the lens portion 3b is formed in a convex curved surface (for example, an aspherical shape).

  By the way, in the illumination device of the conventional example having the configuration shown in FIGS. 21 and 22, six substrate slits 84a are provided radially on the substrate 84 around the axis of the device main body 81, and the adjustment unit 82 is rotated. Even if it makes it, since the light distribution part 85 is prevented from carrying around, the board | substrate 84 may be damaged.

  On the other hand, in the LED module 10 of the present embodiment, the rotation preventing portion 2d (see FIG. 3) that prevents the lens unit 3 from rotating in the outer peripheral direction of the base body 3a on the inner surface of the first side wall 2b of the frame 2. 4) are spaced apart in the outer peripheral direction of the frame body 2 and project inward at a plurality of locations (in this embodiment, 2 locations). Further, the peripheral end portion of the base 3a of the lens unit 3 is located at each of the positions corresponding to the respective rotation preventing portions 2d of the first side wall 2b of the frame body 2 in a state where the lens unit 3 is disposed inside the frame body 2. A notch 3c is formed. Thereby, in the LED module 10 of the present embodiment, it is possible to prevent the lens unit 3 from rotating in the outer peripheral direction of the base body 3a due to the rotation of the rotor 4, as shown in FIG. 21 and FIG. It is not necessary to provide the six substrate slits 84a in the substrate 84 as in the conventional lighting device having the configuration. Here, the flange portion 13b of the holder 13 comes into contact with each rotation preventing portion 2d at each position corresponding to each rotation preventing portion 2d of the frame body 2 in a state where the holder 13 is engaged with the frame body 2. The 1st notch part 13q for avoiding this is formed. In addition, a second notch 13r (see FIG. 3) for holding the LED module 10 on the fixture main body 20 (see FIG. 16) is spaced apart in the outer peripheral direction of the holder main body 13a on the flange 13b of the holder 13. Are formed at a plurality of locations (in this embodiment, two locations).

  Each rotation prevention portion 2d is formed with a fixing screw hole 16 (see FIG. 4) into which a fixing screw (not shown) for fixing the LED module 10 to the instrument body 20 is screwed. Each fixing screw hole 16 is formed along a direction parallel to the center line of the opening hole of the bottom wall 2a.

  Further, on the outer surface of the first side wall 2b, groove portions 2e are formed at positions corresponding to the respective rotation preventing portions 2d along a direction parallel to the center line of the opening hole of the bottom wall 2a. Each groove portion 2e has a length dimension in a direction parallel to the center line of the opening hole of the bottom wall 2a set to half the height dimension of the first side wall 2b, and the second side wall 2c side of the first side wall 2b Is arranged.

  Further, on the inner side surface of the first side wall 2b, convex portions 2f projecting inwardly protrude from a plurality of locations (two locations in the present embodiment) spaced apart in the outer peripheral direction of the frame body 2.

  The rotor 4 can be made of, for example, a synthetic resin material (PBT or the like). In the LED module 10 of the present embodiment, the rotator 4 is made of a black synthetic resin material. Therefore, in the LED module 10 of the present embodiment, the frame body 2 and the rotator 4 are made of a black synthetic resin material, so that light emitted from the peripheral portion of the light emitting surface of each lens portion 3b is emitted. The light from the light source unit 1 can be collected in a certain range.

  Further, the rotator 4 extends outwardly to a rotator body 4a formed in a cylindrical shape and one end portion (upper end portion in FIG. 2) in a direction along the central axis of the rotator body 4a. And a plurality of (two in the present embodiment) outer flange portions 4b. Here, the projecting dimension of each outer flange portion 4 b is set to be slightly larger than the width dimension of the bottom wall 2 a of the frame body 2. Thereby, in the LED module 10 of this embodiment, the frame body 2 can hold the rotor 4 by arranging the rotor 4 inside the frame body 2.

  An anti-slip is provided on the outer wall on the other end side (the lower end side in FIG. 2) of the rotator main body 4a for preventing the finger from slipping when the person rotates the rotator 4 with the finger. The portions 4c are provided at a plurality of locations (two locations in the present embodiment) that are spaced apart from each other in the outer circumferential direction of the rotor main body 4a. In the LED module 10 of the present embodiment, each anti-slip portion 4c is configured by a plurality of grooves 4j formed in a direction along the central axis of the rotor body 4a on the outer wall of the rotor body 4a. Yes. Each groove 4j is formed along the outer peripheral direction of the rotator body 4a on the outer wall of the rotator body 4a, and has a V-shaped sectional view.

  Further, on the outer wall on the other end side of the rotator main body 4a, a plurality of marks 4d indicating the rotation position of the rotator 4 with respect to the frame body 2 are spaced apart in the outer circumferential direction of the rotator main body 4a ( In this embodiment, two) are provided. A scale for adjusting the distance between the light source unit 1 and the lens unit 3 on the outer side wall of the second side wall 2c of the frame body 2 on the side opposite to the first side wall 2b side (lower side in FIG. 2). A plurality of (in this embodiment, two) portions 2k are provided apart from each other in the outer peripheral direction of the frame body 2. In the LED module 10 of the present embodiment, each scale portion 2k is configured by a plurality (5 in this embodiment) of scales 2m each indicating the distance between the light source unit 1 and the lens unit 3. Therefore, in the LED module 10 of the present embodiment, when a person rotates the rotator 4 with respect to the frame body 2, the mark 4 d of the rotator body 4 a is displayed on the scale portion 2 k of the frame body 2. The distance between the light source unit 1 and the lens unit 3 can be adjusted by adjusting to one scale 2m of the scales 2m.

  An outer peripheral wall 4e extends along the inner surface of the first side wall 2b in a state where the rotor 4 is held by the frame 2 at the outer peripheral end of each outer flange portion 4b.

  In each outer peripheral wall 4e, a slit portion 4f is formed along the outer peripheral direction of the rotator main body 4a for guiding the rotator 4 to rotate freely in the outer peripheral direction of the rotator main body 4a. ing. Each slit portion 4f is formed with an introduction portion 4g for introducing each convex portion 2f separately so as to communicate with these slit portions 4f. Each introduction portion 4g is arranged on the rotor body 4a side (the lower side in FIG. 2) in each slit portion 4f. Thereby, in the LED module 10 of this embodiment, it becomes possible to hold | maintain the rotor 4 to the frame 2 so that rotation is possible (refer FIG. 7), and the rotor 4 is set to the outer peripheral direction of the rotor 4. FIG. It can be rotated. A pair of holding portions 18, 18 that hold the rotor 4 between the protrusion 2 f of the frame body 2 in a state where the holder 13 is engaged with the frame body 2, are provided on the flange portion 13 b of the holder 13. It is provided integrally with the holder 13. Thereby, in the LED module 10 of this embodiment, it becomes possible to suppress that the shape of each convex part 2f of the frame 2 deform | transforms. Further, in the LED module 10 of the present embodiment, a plurality of protrusions (not shown) that can be elastically contacted with the convex portions 2 f of the frame 2 are provided on the inner peripheral wall of the slit portions 4 f of the rotor 4. Is preferred. Thereby, in the LED module 10 of this embodiment, when a person rotates the rotator 4 with a finger, the projections of the slit portions 4f elastically contact the projections 2f of the frame 2 individually. It is possible to give a click feeling to a person. In addition, in the LED module 10 of this embodiment, although the said protrusion is provided with 1 to multiple with respect to the convex part 2f of the frame 2, you may provide 1 to 1.

  The conversion mechanism 8 includes a first inclined portion 5 having an inclined piece 5a inclined so as to be separated from one surface (the lower surface in FIG. 2) of the lens unit 3 along one outer peripheral direction of the substrate 3a. A second inclined portion 6 having an inclined surface 6a (see FIG. 6) on which one surface 5d (see FIGS. 2 and 5) of the piece 5a can slide in the outer peripheral direction of the base 3a, and another surface 5c ( 5) includes a sliding contact portion 7 that can slide in the outer peripheral direction of the base 3a and the above-described rotation preventing portion 2d.

  A plurality of (four in this embodiment) first inclined portions 5 are provided at the peripheral end of the base 3a of the lens unit 3 so as to be separated from the outer periphery of the base 3a and integrally with the base 3a. In addition, in the LED module 10 of this embodiment, each 1st inclination part 5 is provided so that it may protrude to the light-projection surface side of the lens part 3b.

  Each of the first inclined portions 5 includes the inclined piece 5a and the substrate 3a which are inclined so as to gradually protrude from the substrate 3a toward the light emitting surface side of the lens portion 3b along one direction of the outer periphery of the substrate 3a. And a support piece 5b that is formed integrally with and supports the inclined piece 5a.

  The second inclined portion 6 is spaced apart from the outer flange portion 4b of the rotator 4 in the outer peripheral direction of the rotator main body 4a and is integrated with the rotator 4 toward the lens unit 3 (upward in FIG. 2). A plurality (two in this embodiment) are provided so as to project.

  A plurality of sliding contact portions 7 are spaced apart from each outer flange portion 4b of the rotator 4 in the outer peripheral direction of the rotator main body 4a toward the lens unit 3 side integrally with the rotator 4 (in the present embodiment). 2).

  Further, each of the inclined pieces 5a of each first inclined portion 5 is formed with a notch portion 5e for individually guiding each sliding contact portion 7 of the rotor 4 to the other surface 5c of the inclined piece 5a. . Thereby, in the LED module 10 of this embodiment, each sliding contact part 7 of the rotator 4 can come into sliding contact with the other surface 5 c of the inclined piece 5 a in each first inclined part 5 of the lens unit 3. . In the LED module 10 of the present embodiment, through holes 4h are formed in the vicinity of the sliding contact portions 7 in the outer flange portions 4b of the rotator 4, and each sliding contact portion 7 is a lens unit. It is possible to confirm the state of sliding contact with the other surface 5c of each of the three inclined pieces 5a.

  Hereinafter, regarding the LED module 10 of the present embodiment, the movement of the lens unit 3 along the central axis of the rotator 4 with respect to the rotation of the rotator 4 will be described with reference to FIGS. 10 to 15. .

  In the LED module 10 of the present embodiment, as shown in FIG. 10, the projections 2 f of the frame 2 are opposite to the introduction portions 4 g of the slits 4 f of the rotor 4 (on the left side in FIG. 10). ) Are arranged at the end of each of the inclined portions 5a of the first inclined portion 5 of the lens unit 3 (see FIG. 5). In this case, the distance between the light source unit 1 and the lens unit 3 is the longest, and the irradiation range of the light emitted from each LED 9 of the light source unit 1 is the narrowest. . Here, in the LED module 10 of the present embodiment, when a person rotates the rotor 4 in the direction of the arrow shown in FIG. 11, as shown in FIG. The portion 7 is in sliding contact with the other surface 5c of the inclined piece 5a in each first inclined portion 5 of the lens unit 3 in one direction in the outer peripheral direction of the base body 3a, and the inclined surface 6a of each second inclined portion 6 of the rotor 4 is provided. Since one surface 5d of the inclined piece 5a in each first inclined portion 5 of the lens unit 3 is slidably contacted in one direction in the outer peripheral direction of the base 3a, the lens unit 3 gradually moves toward the light source portion 1 side. The distance between the light source unit 1 and the lens unit 3 is gradually shortened, and the irradiation range of light emitted from each LED 9 of the light source unit 1 is gradually widened.

  And in the LED module 10 of this embodiment, as shown in FIG. 12, each convex part 2f of the frame 2 is on each introduction part 4g side (right side in FIG. 12) of each slit part 4f of the rotor 4. When arranged at the end, each second inclined portion 6 and each sliding contact portion 7 of the rotor 4 are on the other end side of the inclined piece 5a in each first inclined portion 5 of the lens unit 3 (in FIG. 5). , The distance between the light source unit 1 and the lens unit 3 is the shortest, and the irradiation range of the light emitted from each LED 9 of the light source unit 1 is the widest.

  Therefore, the LED module 10 of the present embodiment changes the distance between the wiring board 11 on which the plurality of LEDs 9 are mounted and the lens unit 3 that can control the light distribution of the light emitted from each LED 9 within a specified range. It is possible. Further, in the LED module 10 of the present embodiment, the light source unit 1 having the above-described wiring substrate 11, the above-described lens unit 3, the frame body 2 that holds the light source unit 1, and the frame disposed inside the frame body 2. A cylindrical rotator 4 rotatably held by the body 2 and the rotator 4 rotate in the outer peripheral direction of the rotator 4 so that the lens unit 3 is moved along the central axis of the rotator 4. Therefore, the light irradiation range can be changed. Here, in the LED module 10 of the present embodiment, the support piece 5b of each first inclined portion 5 of the lens unit 3 is rotated by the rotation of the rotor 4 in order to prevent the rotor 4 from being detached from the frame body 2. It has a function as a regulating part that regulates the moving range. Further, in the LED module 10 of the present embodiment, each sliding contact portion 7 of the rotor 4 has a function as a locking portion that can be detachably locked to the restriction portion (support piece 5b). . Thereby, in the LED module 10 of this embodiment, it becomes possible to regulate the rotation range of the rotor 4, and for example, the rotor 4 can be detached from the frame 2 without using a fixing tool such as a screw. It is possible to prevent separation.

  By the way, in the LED module 10 of this embodiment, the light radiated | emitted from each LED9 to the mounting surface side of each LED9 in the wiring board 11 of the light source part 1 other than the lens part 3b corresponding to each of each LED9. A first light shielding wall 13j (see FIGS. 1 and 2, etc.) for preventing the light from entering the lens portion 3b is provided so as to surround each LED 9. More specifically, in the LED module 10 of the present embodiment, each window hole 13g is surrounded in a plan view on the side opposite to the wiring board 11 side (the lower side in FIG. 2) at the bottom of the holder body 13a. Thus, the first light shielding wall 13j protruding to the opposite side is provided integrally with the holder body 13a. That is, the first light shielding wall 13j is disposed so as to surround each LED 9. Here, on the wiring board 11 side at the bottom of the holder main body 13a, a storage groove 33 (see FIG. 3) capable of storing each electric wire 12 is formed. Thus, in the LED module 10 of the present embodiment, the pair of electric wires 12 and 12 electrically connected to the wiring board 11 in a state where the holder 13 holds the wiring board 11 is led out to the outside through the lead-out part 13e. Is possible. In the LED module 10 of this embodiment, the first light shielding wall 13j is provided integrally with the holder main body 13a, but may be provided separately from the holder main body 13a.

  Moreover, in the LED module 10 of this embodiment, the light radiated | emitted from LED9 other than LED9 corresponding to each of each lens part 3b to the peripheral part by the side of the light-incidence surface of each lens part 3b of the lens unit 3 is provided. A second light shielding wall 3d (see FIG. 1 and FIG. 5 and the like) is provided to prevent the light from entering the lens portion 3b.

  The second light shielding wall 3d can be made of a non-translucent material (for example, a white opaque resin). Further, the second light-shielding wall 3d protrudes from the light incident surface of each lens portion 3b to the side opposite to the light emitting surface side (upper side in FIG. 1). Provided in the department. Here, in the LED module 10 of the present embodiment, the distal end portion (the upper end portion in FIG. 1) of the second light shielding wall 3d is accommodated in the distal end portion (the lower end portion in FIG. 1) of the first light shielding wall 13j. A groove portion 13w (see FIGS. 1 and 9) that can be formed is formed. 2 and 3, the groove 13w is omitted.

  In the LED module 10 of the present embodiment, the total height dimension of the height dimension of the first light shielding wall 13j and the height dimension of the second light shielding wall 3d changes the distance between the wiring board 11 and the lens unit 3. The height dimension of the first light-shielding wall 13j and the height dimension of the second light-shielding wall 3d are set to be smaller than the lower limit of the prescribed range.

  In the LED module 10 of the present embodiment, the second light shielding wall 3d is disposed outside the first light shielding wall 13j. Thereby, in the LED module 10 of this embodiment, the irradiation range of the light radiated | emitted from each LED9 of the light source part 1 compared with the case where the 2nd light-shielding wall 3d is arrange | positioned inside the 1st light-shielding wall 13j. It can be widened. In the LED module 10 of the present embodiment, the second light shielding wall 3d is arranged outside the first light shielding wall 13j, but the second light shielding wall 3d is arranged inside the first light shielding wall 13j. Also good.

  In the LED module 10 of the present embodiment, as shown in FIG. 1A, when the lens unit 3 is closest to the light source unit 1, a part of the first light shielding wall 13j and the second light shielding wall 3d is It overlaps in the direction (left-right direction in FIG. 1) where LED9 adjacent to each other is arranged. In the LED module 10 of the present embodiment, as shown in FIG. 1B, even when the lens unit 3 is farthest from the light source unit 1, a part of the first light shielding wall 13j and the second light shielding wall 3d. They overlap in the direction in which the adjacent LEDs 9 are arranged. In short, in the LED module 10 of the present embodiment, a part of the first light shielding wall 13j and the second light shielding wall 3d are arranged so as to overlap in the direction in which the adjacent LEDs 9 are arranged. Thereby, in the LED module 10 of this embodiment, the light radiated | emitted from each LED9 of the light source part 1 injects into the light-incidence surface of lens parts 3b other than the lens part 3b corresponding to each of each LED9. Can be suppressed, and uneven illuminance on the irradiated surface can be suppressed. Note that an arrow K shown in FIG. 1 represents a position where a part of the first light shielding wall 13j and the second light shielding wall 3d overlap in the direction in which the adjacent LEDs 9 are arranged. Moreover, the dashed-dotted line shown in FIG. 1 represents the light radiated | emitted from each of each LED9.

  The LED module 10 of this embodiment described above has a distance between the wiring board 11 on which the plurality of LEDs 9 are mounted and the lens unit 3 capable of controlling the light distribution of the light emitted from each LED 9 within a specified range. It is a changeable LED module, and the lens unit 3 has a plurality of lens portions 3b that individually control the light distribution of the light emitted from each LED 9. Moreover, in the LED module 10 of this embodiment, the light emitted from each LED 9 on the mounting surface side of each LED 9 on the wiring board 11 is transmitted to the other lens unit 3 b other than the lens unit 3 b corresponding to each LED 9. A first light-shielding wall 13j for preventing incidence is provided so as to surround the periphery of each LED 9. On the periphery of each lens portion 3b on the light incident surface side, other than the LED 9 corresponding to each lens portion 3b. A second light shielding wall 3d for preventing light emitted from the other LED 9 from entering the lens portion 3b is projected, and the height dimension of the first light shielding wall 13j and the height of the second light shielding wall 3d are provided. The total height dimension with the dimension is larger than the upper limit of the prescribed range, and the height dimension of the first light shielding wall 13j and the height dimension of the second light shielding wall 3d are set smaller than the lower limit of the prescribed range. The first light shielding wall 13j Since a part of the second light shielding wall 3d is arranged so as to overlap in the direction in which the adjacent LEDs 9 are arranged, it is possible to change the irradiation range of the light and to suppress the illuminance unevenness of the irradiated surface. Become.

  Hereinafter, an example of the lighting fixture using the LED module 10 of this embodiment is demonstrated based on FIG. 16 and FIG.

  The lighting fixture 30 of the present embodiment includes an LED module 10 and a fixture body 20 that holds the LED module 10.

  The instrument body 20 can be made of a metal such as aluminum, for example.

  In addition, the instrument body 20 has a plate-like (disc-like in this embodiment) bottom wall 21a having a circular opening hole at the center, and the LED module 10 side (in FIG. 16) from the outer periphery of the bottom wall 21a. And a side wall 21b that protrudes downward (to the lower side). Moreover, the instrument main body 20 has a heat radiating part 22 that radiates heat generated in the LED module 10, and the heat radiating part 22 is opposite to the LED module 10 side on the bottom wall 21 a of the main body part 21 (see FIG. In FIG. In addition, in the lighting fixture 30 of this embodiment, although the fixture main body 20 is comprised with the metal, you may comprise not only this but with materials other than a metal, for example.

  A cutout portion 23 for leading the pair of electric wires 12 and 12 in the LED module 10 to the outside of the instrument main body 20 is formed on the inner peripheral portion of the bottom wall 21 a of the main body portion 21.

  In addition, holding pieces 25 for holding the LED module 10 are provided on the bottom wall 21a of the main body 21 at a plurality of locations (two locations in the present embodiment) spaced apart in the outer peripheral direction of the bottom wall 21a. In the lighting fixture 30 of the present embodiment, the fixture body 20 holds the LED module 10 by holding the holder 13 by passing each holding piece 25 of the main body portion 21 through each notch portion 13r of the holder 13 of the LED module 10. It becomes possible to hold. In FIG. 16, one of the two holding pieces 25 is visible.

  In addition, fixing screw insertion holes 26 through which the fixing screws for fixing the LED module 10 to the instrument main body 20 are inserted in the bottom wall 21a of the main body portion 21 at a plurality of positions (separated in the outer peripheral direction of the bottom wall 21a ( In this embodiment, it is provided in two places. Here, each fixing screw insertion hole 26 is provided at each of the positions corresponding to each fixing screw hole 16 of each rotation preventing portion 2d in the LED module 10 in a state where the LED module 10 is held by the instrument body 20. Yes. Thereby, in the lighting fixture 30 of this embodiment, it becomes possible to fix the LED module 10 to the fixture main body 20. FIG. In FIG. 16, one fixing screw insertion hole 26 out of the two fixing screw insertion holes 26 is visible.

  On the side wall 21b of the main body 21, a first mounting screw (not shown) for mounting the above-described lighting fixture 30 to, for example, a holder 41 (see FIG. 17) held by the wiring duct 40 (see FIG. 17). Screw holes 28 to be screwed together are provided at a plurality of locations (in this embodiment, two locations) spaced apart in the outer peripheral direction of the bottom wall 21a. In FIG. 16, one of the two screw holes 28 is visible.

  The heat radiating portion 22 is a plate-like (disc-like in this embodiment) contact portion 22a that can contact the heat radiating sheet 14 in the LED module 10, and the opposite side of the contact portion 22a from the LED module 10 side (FIG. 16). Then, it can be comprised with the several plate-shaped heat radiation fin 22b erected on the upper side. In addition, in the lighting fixture 30 of this embodiment, the 2nd attachment screw (not shown) for attaching the thermal radiation part 22 to the main-body part 21 is used as a means to attach the thermal radiation part 22 to the main-body part 21, for example. However, the means for attaching the heat radiation part 22 to the main body part 21 is not limited to this.

  At the outer peripheral end of the contact portion 22a, in a state where the heat radiating portion 22 is attached to the main body portion 21, a pair of electric wires 12 in the LED module 10 are disposed at positions corresponding to the notches 23 of the bottom wall 21a of the main body portion 21. A notch 24 is provided for leading 12 out of the instrument body 20. In the lighting fixture 30 of this embodiment, the notch part 23 and the notch part 24 lead out a pair of electric wires 12 and 12 in the LED module 10 from the LED module 10 side of the bottom part 21a and the contact part 22a to the said opposite side. A lead-out hole 27 is formed for this purpose.

  Hereinafter, the usage example of the lighting fixture 30 of this embodiment is demonstrated based on FIG.

  The lighting fixture 30 of this embodiment is used as a spotlight attached to the wiring duct 40 installed on a ceiling surface, for example. The lighting fixture 30 is electrically connected to a holder 41 for holding the fixture body 20 in the wiring duct 40 and a conductive plate (not shown) provided in the wiring duct 40 and supplies power to the LED module 10. And a power supply unit 42. In addition, in the lighting fixture 30 of the structure shown in FIG. 17, the pair of electric wires 12 and 12 in the LED module 10 is configured by a single power cable 31 led out from the lighting fixture 30. Moreover, in the lighting fixture 30 of this embodiment, although the spotlight attached to the wiring duct 40 is illustrated as an example of use, it is not restricted to this, For example, as shown in FIG. It may be a spotlight or the like.

  The lighting fixture 30 of the present embodiment described above includes the above-described LED module 10 and the fixture main body 20 that holds the LED module 10, so that the light irradiation range can be changed and the surface to be irradiated can be changed. Irradiance unevenness can be suppressed.

(Embodiment 2)
The basic configuration of the LED module 10 of the present embodiment is the same as that of the first embodiment, and the first light shielding wall 13j corresponds to each of the LEDs 9 with the light emitted from each LED 9, as shown in FIG. The point which has the reflective surface 13t reflected in the light-incidence surface side of each lens part 3b is different from Embodiment 1. FIG. In addition, the same code | symbol is attached | subjected to the component similar to Embodiment 1, and description is abbreviate | omitted suitably.

  The first light shielding wall 13j is provided with the reflection surface 13t described above on the side surface on the LED 9 side. The reflective surface 13t can be configured by, for example, painting a white powder on the side surface of each LED 9 in the first light shielding wall 13j. In addition, in the LED module 10 of this embodiment, although the reflective surface 13t is comprised by coating a white powder, it is not restricted to this, For example, you may comprise with a metal plate.

  Therefore, in the LED module 10 of the present embodiment, the first light shielding wall 13j has the light emitted from each LED 9 on the side surface on the LED 9 side, and the light incident surface side of each lens unit 3b corresponding to each LED 9. Since the reflection surface 13t that reflects toward the surface is provided, it is possible to improve the light output output from the light emission surface of the lens portion 3b as compared with the LED module 10 of the first embodiment.

  In addition, you may use the LED module 10 of this embodiment for the instrument main body 20 demonstrated in Embodiment 1. FIG.

(Embodiment 3)
The basic configuration of the LED module 10 of the present embodiment is the same as that of the second embodiment. As shown in FIG. 20, the LED 9 corresponding to each lens unit 3 b is connected to the periphery of the light emitting surface of each lens unit 3 b. The difference from the second embodiment is that a diffusion portion 3u that diffuses light is formed. In addition, the same code | symbol is attached | subjected to the component similar to Embodiment 2, and description is abbreviate | omitted suitably.

  The diffusing portion 3u is formed by subjecting the peripheral portion of the light emitting surface of the lens portion 3b to a surface treatment such as embossing for forming irregularities on the light emitting surface.

  Therefore, in the LED module 10 of the present embodiment, each lens portion 3b is formed in a convex curved surface on the light exit surface side, and corresponds to each lens portion 3b on the periphery of the light exit surface of each lens portion 3b. Since the diffusion part 3u for diffusing the light from the LED 9 is formed, the illuminance of the light emitted from the peripheral part of the light emission surface of each lens part 3b and the central part of the light emission surface of each lens part 3b are emitted. The illuminance of light can be made the same, and the illuminance unevenness of the irradiated surface can be further suppressed as compared with the LED module 10 of the second embodiment. Moreover, in the LED module 10 of this embodiment, since the above-mentioned diffusion part 3u is formed in the peripheral part of the light emission surface of each lens part 3b, it generate | occur | produces in the peripheral part of the light emission surface of each lens part 3b. It is possible to reduce light color unevenness.

  In addition, you may use the LED module 10 of this embodiment for the instrument main body 20 demonstrated in Embodiment 1. FIG.

DESCRIPTION OF SYMBOLS 1 Light source part 2 Frame 3 Lens unit 3b Lens part 3d 2nd light-shielding wall 3u Diffusion part 4 Rotor 8 Conversion mechanism 9 LED
DESCRIPTION OF SYMBOLS 10 LED module 11 Wiring board 13j 1st light-shielding wall 13t Reflecting surface 20 Appliance main body 30 Lighting fixture

Claims (6)

  An LED module capable of changing a distance between a wiring board on which a plurality of LEDs are mounted and a lens unit capable of controlling light distribution of light emitted from each LED within a specified range, wherein the lens unit is The light emitted from each of the LEDs has a plurality of lens units that individually control the light distribution of the light emitted from each of the LEDs, and on the mounting surface side of each of the LEDs on the wiring board. A first light-shielding wall for preventing the light from entering the lens unit other than the lens unit corresponding to each of the LEDs is provided so as to surround the periphery of the LED, and light incident on each lens unit A second light shielding wall for preventing light emitted from the LED other than the LED corresponding to each of the lens portions from entering the lens portion is provided on the peripheral portion on the surface side, The height of the first light shielding wall The total height dimension of the dimension and the height dimension of the second light shielding wall is larger than the upper limit of the specified range, and the height dimension of the first light shielding wall and the height dimension of the second light shielding wall are The lower limit of the specified range is set, and the first light-shielding wall and the second light-shielding wall are arranged so that parts of the first light-shielding wall and the second light-shielding wall overlap in the direction in which the adjacent LEDs are arranged. LED module.   The LED module according to claim 1, wherein the second light shielding wall is disposed outside the first light shielding wall.   The first light-shielding wall is provided with a reflecting surface that reflects light emitted from each LED to a light incident surface side of the lens unit corresponding to each LED on a side surface on each LED side. The LED module according to claim 2, wherein   Each of the lens portions is formed in a convex curved shape on the light emitting surface side, and a diffusion portion for diffusing light from the LED corresponding to the lens portion is formed on a peripheral portion of the light emitting surface. The LED module according to claim 1, wherein:   A light source having the wiring board; a frame for holding the light source; a cylindrical rotator disposed inside the frame and rotatably held by the frame; and the rotator 2. A conversion mechanism that enables the lens unit to move along the central axis of the rotator by rotating in the outer peripheral direction of the rotator. 5. The LED module according to any one of 4 above.   A lighting fixture comprising: the LED module according to any one of claims 1 to 5; and a fixture main body that holds the LED module.

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