JP6664422B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture in which a light source is attached to a main body at an angle.

  Some ceiling-mounted lighting fixtures irradiate light in a specific direction, such as irradiating light from a ceiling toward a side wall. Here, in the case where the entire lighting fixture is installed at an angle, when there is an obstacle in the mounting space such as above the ceiling, it may interfere with the obstacle. Therefore, there has been proposed a lighting fixture in which an optical axis of a light source is attached to a main body at an angle (for example, see Patent Documents 1 and 2).

  Patent Literature 1 discloses a lighting apparatus including a main body, a horizontal upper surface facing the main body, and an adapter having a lower surface inclined with respect to the upper surface, and an LED unit attached to the lower surface of the adapter. . Patent Literature 2 discloses a lighting device in which a module support plate is attached to a rectangular cylindrical main body with an inclination, and an LED module is fixed to the inclined module support plate.

JP 2013-45709 A JP 2008-103300 A

  However, if the LED module is inclined by adding components such as an adapter and a module support plate in order to prevent interference with obstacles behind the ceiling as in Patent Documents 1 and 2, the cost increases. Problem.

  The present invention has been made to solve the above-described problem, and can irradiate light in a specific direction while avoiding interference with an obstacle in a mounting space without increasing cost. It is intended to provide equipment.

The lighting fixture of the present invention is a lighting fixture embedded and installed in a fixture mounting surface, wherein the light source emits light, the light source is attached, and a heat radiating unit that radiates heat generated by the light source is attached to the heat radiating unit. A reflecting portion for reflecting light emitted by the light source, the heat radiating portion is formed integrally with the plurality of radiating fins formed in a plate shape, and the plurality of radiating fins, and is inclined with respect to the instrument mounting surface. A light source mounting portion provided with a light source mounting surface for mounting the light source, and a mounting flange formed between the light source mounting portion and the radiation fin; And an upper opening formed by opening a part of the light source accommodating portion. The upper opening of the reflecting portion is connected to the mounting flange of the heat radiating portion, so that the light source attaching portion is accommodated in the light source accommodating portion. The mounting flange surface is flush with the instrument mounting surface. It is.

  According to the lighting fixture of the present invention, since the radiation fin and the light source mounting portion having the inclined light source mounting surface are integrally formed, there is no need to attach another member such as an adapter to the radiation fin, and the cost is reduced. Irradiation in a specific direction can be performed while avoiding interference with an obstacle in the mounting space without increasing the size.

It is a perspective view showing the lighting fixture concerning Embodiment 1 of the present invention. It is a perspective view showing the lighting fixture concerning Embodiment 1 of the present invention. It is a side view showing the lighting fixture concerning Embodiment 1 of the present invention. It is an upper side view showing the lighting fixture concerning Embodiment 1 of the present invention. It is a lower side view showing the lighting fixture concerning Embodiment 1 of the present invention. It is a sectional view showing the lighting fixture concerning Embodiment 1 of the present invention. It is a development view showing the lighting fixture concerning Embodiment 1 of the present invention. It is a development view showing the lighting fixture concerning Embodiment 1 of the present invention. FIG. 9 is an exploded view illustrating an example of a heat radiating portion of the lighting fixture of FIGS. 1 to 8. FIG. 9 is a component development view illustrating an example of a reflection section of the lighting fixture of FIGS. 1 to 8. FIG. 9 is a schematic diagram showing a state where the lighting fixtures of FIGS. 1 to 8 are installed on a fixture mounting surface. It is a perspective view which shows the lighting fixture of Embodiment 2 of this invention. It is a perspective view showing the lighting fixture concerning Embodiment 2 of the present invention. It is a lower side view showing the lighting fixture concerning Embodiment 2 of the present invention. It is an upper side view showing the lighting fixture concerning Embodiment 2 of the present invention. It is a side view which shows the lighting fixture which concerns on Embodiment 2 of this invention. It is sectional drawing which shows the lighting fixture which concerns on Embodiment 2 of this invention. It is a component development view showing the lighting fixture concerning Embodiment 2 of the present invention. It is a component development view showing the lighting fixture concerning Embodiment 2 of the present invention. FIG. 20 is an exploded view of an example of the reflection unit of the lighting fixture of FIGS. 12 to 19.

Embodiment 1 FIG.
Hereinafter, an embodiment of a lighting fixture of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a lighting fixture according to Embodiment 1 of the present invention, FIG. 2 is a perspective view showing a lighting fixture according to Embodiment 1 of the present invention, and FIG. 3 is a perspective view showing a lighting fixture according to Embodiment 1 of the present invention. FIG. 4 is an upper side view showing a lighting fixture according to the first embodiment of the present invention, FIG. 5 is a lower side view showing a lighting fixture according to the first embodiment of the present invention, and FIG. Sectional drawing which shows the lighting fixture which concerns on Embodiment 1, FIG.7 and FIG.8 is a development view which shows the lighting fixture which concerns on Embodiment 1 of this invention.

  The lighting fixture 1 of FIGS. 1 to 8 is a ceiling-embedded lighting fixture that is used in a state of being embedded in a mounting opening hole provided on a fixture mounting surface P (see FIG. 11) such as a ceiling, for example. The lighting device 1 includes a light source 10, a heat radiating unit 20, a power supply unit 30, and a reflecting unit 40. The light source 10 is, for example, a surface light source in which a plurality of light emitting elements 12 such as LEDs are mounted on a substrate 11 formed in a circular shape.

  FIG. 9 is a component development view showing an example of the heat radiating portion 20 of the lighting fixture 1 of FIGS. 1 to 8, and the heat radiating portion 20 will be described with reference to FIGS. 9 (a) to 9 (f) show six views of the heat radiating part 20, respectively. The heat radiating section 20 is a heat sink to which the light source 10 is attached and radiates heat generated by the light source 10, and is formed of a metal such as aluminum which transmits heat. The heat dissipating part 20 has a plurality of heat dissipating fins 21 and a light source attaching part 22, and the heat dissipating fin 21 and the light source attaching part 22 are formed integrally. In addition, a mounting flange 26 protruding to the outer peripheral side for fixing the reflecting portion 40 is formed on the upper portion of the light source mounting portion 22. A through hole is formed.

  The plurality of radiating fins 21 are plate-shaped members that emit the heat generated by the light source 10 into the atmosphere, and extend in a direction perpendicular to the instrument mounting surface P (see FIG. 11). The radiation fins 21 are provided at regular intervals. The light source mounting portion 22 is formed integrally with the plurality of radiating fins 21, and is provided with a light source mounting surface 23 for mounting the light source 10 inclined with respect to the appliance mounting surface P (see FIG. 11). Specifically, the light source mounting portion 22 is formed, for example, in a columnar shape, the radiation fins 21 are integrally mounted on the upper surface side, and the light source mounting surface 23 for mounting the light source 10 is formed on the lower surface side. Have been.

  Therefore, the light source mounting portion 22 is in a state where the heat radiation portion 20 is provided with an outer peripheral side surface surrounding the heat radiation fin 21 between the heat radiation fin 21 and the light source mounting surface 23. By connecting the radiation fins 21 to the space defined by the light source mounting surface 23, the light source mounting portion 22, and the outer peripheral side surface, the structure can be strengthened and the weight can be reduced.

  The light source mounting surface 23 is a circular flat surface on which the substrate 11 of the light source 10 is fixed. At this time, an insulating sheet 24 is provided between the light source 10 and the light source mounting surface 23 to electrically insulate between the metal part exposed from the cross section of the light source 10 and the light source mounting surface 23. Further, an insertion hole for inserting a fixing member such as a screw is formed in the light source mounting surface 23, and the light source 10 and the insulating sheet 24 are fixed to the light source mounting surface 23 by the fixing member. Further, the light source 10 is fixed by being pressed against a light source mounting surface 23 from a ring-shaped holding frame 25 having an opening at the periphery of the substrate 11. As described above, the light source 10 and the light source mounting surface 23 are fixed in close contact with each other, and heat generated from the light emitting element 12 of the light source 10 is transmitted to the heat radiation fin 21 via the light source mounting portion 22 (light source mounting surface 23). Then, the heat is radiated from the radiating fins 21 to the atmosphere.

  The power supply unit 30 is electrically connected to the light source 10 via a wiring (not shown), and supplies power to the light source 10. The power supply unit 30 has a structure in which a substrate 32 on which a lighting circuit such as an inverter circuit is mounted in a box 31 having a rectangular shape is built. Here, a rectangular notch 21a is formed in a part of the plurality of radiating fins 21. When the box body 31 is installed in the notch 21a of the radiating fin 21, heat is radiated by a fixing member such as a screw. It is connected to the section 20.

  FIG. 10 is an exploded view of an example of the reflection unit 40 of the lighting fixture 1 of FIGS. 1 to 8. The reflection unit 40 will be described with reference to FIGS. 1 to 10. FIGS. 10A to 10F show six views of the reflection unit 40, respectively. The reflection section 40 reflects light emitted from the light source 10 and includes a light source housing section 41, a reflection plate 42, a mounting frame 43, a cover member 44, and a mounting claw 45. The light source accommodating portion 41 has a cylindrical shape, and has an upper opening 41x at the upper end side of the light source accommodating portion 41 into which the light source mounting portion 22 is inserted. Then, the light source mounting portion 22 and the light source mounting surface 23 are housed in the light source housing portion 41 from the upper opening 41x. At this time, a light transmissive cover member 44 such as a lens or a light transmitting plate is accommodated in the light source accommodating portion 41, and the light source 10 is positioned on the cover member 44. Therefore, the light of the light source 10 is emitted from the upper opening 41x to the reflection plate 42 side via the cover member 44. The edge of the upper opening 41x is connected to the mounting flange 26 of the heat radiating section 20 and is fixed by a fixing member such as a screw. As a result, the reflecting section 40 is fixed and held by the heat radiating section 20.

  The reflection plate 42 reflects light emitted from the light source 10 and is provided on the lower end side of the light source housing 41. The reflection plate 42 has a substantially conical shape that is rotationally asymmetric, and includes a bottom opening 42x for emitting light from the light source 10 to the irradiation space side. Therefore, the center of the bottom opening 42x is located so as not to be coaxial with the center of the upper opening 41x of the light source housing 41.

  The mounting frame 43 is provided on the periphery of the bottom opening 42x, and is located at the edge of the mounting opening when the lighting fixture 1 is embedded in the mounting opening formed on the fixture mounting surface P (see FIG. 11). Things. Therefore, when the lighting fixture 1 is attached to the fixture mounting surface P, the mounting frame 43 is in a state parallel to the fixture mounting surface P. The mounting claw 45 is mounted on the outer peripheral side of the reflection plate 42 (behind the ceiling), and fixes the lighting fixture 1 to the mounting opening of the fixture mounting surface P.

  Here, the lighting fixture 1 has a light distribution characteristic such that the light distribution direction of the light source 10 is inclined with respect to the fixture mounting surface P, and this light distribution characteristic is formed integrally with the radiation fin 21. This is realized by the light source mounting surface 23 being inclined. FIG. 11 is a schematic diagram showing a state in which the lighting fixtures of FIGS. 1 to 8 are installed on a fixture mounting surface (ceiling) P. As shown in FIG. 11, the light source mounting surface 23 is inclined by a light source inclination angle A with respect to the appliance mounting surface P. Note that the fixture mounting surface P, the power supply unit 30, and the mounting frame 43 are in a parallel relationship with each other.

  For this reason, the optical axis of the light source 10 is also fixed in a state of being inclined by the light source inclination angle A with respect to the horizontal plane. Then, for example, when the light source mounting surface 23 has a light distribution characteristic parallel to the irradiation surface LP, the angle formed between the appliance mounting surface P and the irradiation surface LP substantially matches the light source inclination angle A. Therefore, the lighting fixture 1 can emit light having a light distribution characteristic inclined by a predetermined light source inclination angle A with respect to the fixture mounting surface P.

  Further, the reflection plate 42 has two first reflection surfaces 42A and second reflection surfaces 42B having different inclination angles with respect to the appliance mounting surface P. The first reflection surface 42A is located on the light distribution direction side of the light source mounting surface 23, and the second reflection surface 42B is connected to the first reflection surface 42A in the circumferential direction and has a light distribution. It is located on the opposite side of the direction. The first inclination angle B of the first reflection surface 42A is equal to or greater than (90 + light source inclination angle (A)) °, and the second inclination angle C of the second reflection surface 42B is (90−light source inclination angle). (A)) formed at an angle of not less than °.

  As described above, since the inclined light source mounting surface 23 is provided integrally with the heat radiation fins 21, the desired light source 10 can be provided from the light source 10 without using an additional member such as an adapter while avoiding interference with obstacles. The light can be irradiated in the light distribution direction. That is, when an adapter made of a separate member is provided on the heat radiation fins 21 as in the related art, the number of components is increased and an assembling process is required, which increases the cost. On the other hand, since the radiation fins 21 and the light source mounting portion 22 are integrally formed, the number of components can be reduced, and the assembling process is not required, so that the cost can be reduced. Furthermore, since the heat radiation fins 21 and the light source mounting portion 22 are formed integrally, heat generated from the light source 10 can be efficiently conducted to the heat radiation fins 21 to perform heat radiation.

  Further, in the reflecting section 40, the plurality of reflecting surfaces 42A and 42B have different inclination angles B and C, and the reflection characteristics are set to match the light source inclination angle A (light distribution direction) of the light source mounting surface 23. As a whole, the illumination device 1 can obtain an optimum irradiation distribution suitable for the light distribution direction from the light source 10. In particular, when the first inclination angle B is equal to or larger than (90 + light source inclination angle (A)) ° and the second inclination angle C is equal to or larger than (90−light source inclination angle (A)) °, the reflection plate 42 is An optimal light distribution can be obtained without obstructing the optical path of highly directional light such as an LED.

Embodiment 2. FIG.
FIG. 12 is a perspective view showing a lighting fixture according to Embodiment 2 of the present invention, FIG. 13 is a perspective view showing a lighting fixture according to Embodiment 2 of the present invention, and FIG. 14 is a lighting fixture according to Embodiment 2 of the present invention. A lower side view, FIG. 15 is an upper side view showing a lighting fixture according to Embodiment 2 of the present invention, FIG. 16 is a lateral side view showing a lighting fixture according to Embodiment 2 of the present invention, and FIG. 17 is an embodiment of the present invention. 18 and 19 are exploded parts showing the lighting fixture according to the second embodiment of the present invention, and FIG. 20 shows an example of the reflecting portion of the lighting fixture of FIGS. 12 to 19. FIG. 21 is an exploded view of the components, and the lighting fixture 100 will be described with reference to FIGS. 20 (a) to 20 (f) show six views of the reflection unit 140, respectively. In addition, in the lighting fixture 100 of FIG. 12 to FIG. The difference between the lighting fixture 100 of FIGS. 12 to 19 and the lighting fixture 1 of the first embodiment is the structure of the reflection unit 140.

  12 has a protrusion 150 protruding from a plane formed by the mounting frame 43, and the second reflection surface 142B is formed on the bottom opening 42x side of the protrusion 150. Among them, as shown in FIG. 17, the first inclination angle B of the first reflection surface 142A is formed to be (90 + light source inclination angle (A)) ° or more similarly to the first embodiment. On the other hand, the second inclination angle C1 of the second reflection surface 142B is set to (90-β) ° or less (β is an arbitrary angle).

  Even in such a case, similar to the first embodiment, the inclined light source mounting surface 23 is provided integrally with the heat radiation fins 21 so that an adapter or the like can be added while avoiding interference with an obstacle. The light can be emitted from the light source 10 in a desired direction without using the above member. Further, since the second reflection surface 142B is provided so as to protrude from the mounting frame 43, light emitted from the light source 10 can be reflected in the light distribution direction.

  Embodiments of the present invention are not limited to the above embodiments. For example, the case where the lighting fixture 1 is installed on the ceiling is illustrated, but the present invention is not limited to this. For example, the lighting fixture 1 may be installed on a side wall or a floor. Furthermore, the case where the fixture mounting surface P is horizontal and the light distribution direction is inclined with respect to the vertical direction is illustrated, but the fixture mounting surface P is inclined with respect to the horizontal direction and the light distribution direction is vertical. It may be inclined so as to be in the direction.

  In addition, in the first and second embodiments, the case where the power supply unit 30 is installed upward is illustrated, but various installation positions may be changed within a range that does not interfere with heat dissipation and obstacles. Good. Furthermore, although the case where the reflection unit 40 has two reflection surfaces having different inclination angles is illustrated, the reflection unit 40 may have three or more reflection surfaces having different inclination angles. Further, in the first and second embodiments, the method of mounting and connecting the components is described as a method of mounting and connecting using a fixing member such as a screw. The attachment and connection may be performed by a method.

  DESCRIPTION OF SYMBOLS 1, 100 Lighting fixture, 10 light source, 11 board, 12 light emitting element, 20 heat radiating part, 21 heat radiating fin, 21a notch, 22 light source mounting part, 23 light source mounting surface, 24 insulating sheet, 25 holding frame, 26 mounting flange, 30 power supply unit, 31 box, 32 substrate, 40, 140 reflector, 41 light source housing, 41x top opening, 42 reflector, 42A, 142A first reflection surface, 42B, 142B second reflection surface, 42x bottom opening, 43 mounting frame, 44 cover member, 45 mounting claw, 150 projecting portion, A light source tilt angle, B first tilt angle, C, C1 second tilt angle, LP irradiation surface, P instrument mounting surface.

Claims (5)

A lighting fixture embedded and installed in the fixture mounting surface,
A light source that emits light,
The light source is attached, a radiator that radiates heat generated by the light source,
A reflecting portion attached to the heat radiating portion, for reflecting light emitted by the light source,
The radiator is
A plurality of radiating fins formed in a plate shape,
A light source mounting portion formed integrally with the plurality of radiating fins and provided with a light source mounting surface for mounting the light source inclined with respect to the appliance mounting surface;
A mounting flange formed between the light source mounting portion and the radiation fin,
The reflecting portion has a light source housing portion that houses the light source mounting portion, and an upper opening formed by opening a part of the light source housing portion,
By connecting the upper opening of the reflecting portion to the mounting flange of the heat radiating portion, the light source mounting portion is housed in the light source housing portion ,
The lighting fixture , wherein a surface of the mounting flange is parallel to the fixture mounting surface .   The lighting fixture according to claim 1, wherein the light source is embedded in the fixture mounting surface.   The lighting device according to claim 2, wherein the reflecting portion has a plurality of reflecting surfaces having different inclination angles with respect to the device mounting surface. The light source mounting surface is inclined by a light source tilt angle (A) with respect to the appliance mounting surface,
The reflector has a rotationally asymmetric shape provided to surround the light source,
A first reflecting surface which is located on the light distribution direction side formed by the inclination of the light source mounting surface and is formed at a first inclination angle of (90 + the light source inclination angle (A)) ° or more with respect to the appliance mounting surface; ,
A second reflection surface connected to the first reflection surface, located on a side opposite to the light distribution direction, and formed at a second inclination angle smaller than the first inclination angle with respect to the appliance mounting surface. The lighting device according to claim 3, wherein the lighting device is a lighting device.   The lighting device according to claim 4, wherein the second inclination angle is (90-the light source inclination angle (A)) or more.

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