JP2017208356A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire being capable of dealing with different optical output and light distribution while utilizing a common structure.SOLUTION: A luminaire 10 comprises: a common body 11, a light source unit 12, and a light control unit 13. The common body 11 opens in front and behind, and has a rear-side common attachment part 22 at a rear side while having a front-side common attachment part 24 at a front side. The light source unit 12 has a plurality of light source parts 35 using LEDs 38 and a radiator 36 disposed with the plurality of light source parts 35, and is attached to the rear-side common attachment part 22 of the common body 11. The light control unit 13 has a plurality of reflectors 49 individually facing the light source parts 35 and controlling light distribution, and is attached to the front-side common attachment part 24 of the common body 11.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to a lighting device using a light emitting element as a light source.

  Conventionally, for example, there is an illumination device used as a projector for illuminating a building or the like. In such an illuminating device, there is an illuminating device that uses an LED as a light source instead of the conventional HID lamp due to an improvement in performance of the LED as a light emitting element.

  A lighting device using an LED as a light source employs a structure in which heat generated by the LED is radiated by a radiator, but the amount of heat generated according to the light output of the LED also varies. The heat dissipation body which has is used. Moreover, in order to control the light distribution of the light emitted from the LED, a reflector having a necessary light distribution is used. Therefore, a plurality of types of lighting devices are prepared according to combinations of different light outputs and different light distributions.

JP 2013-114916 A

  When preparing multiple types of lighting devices according to combinations of different light outputs and light distributions, it is not easy to use a common structure, and a dedicated lighting device must be prepared for each type. is there.

  The problem to be solved by the present invention is to provide an illuminating device that can handle different light outputs and light distributions while utilizing a common structure.

  The illumination device according to the embodiment includes a main body having a plurality of openings that are opened in the front-rear direction; a light source unit using a light-emitting element; and the light source unit is disposed on the front side and has a radiator on the back side. A light source unit disposed from the back side of the opening; a reflector for controlling light distribution disposed on the front side of the opening of the common main body and opposed to the light source unit; A translucent cover disposed on the front side of the reflector.

  According to the present invention, it can be expected that the common main body is used as a common structure.

It is a perspective view of the decomposition | disassembly state of the illuminating device of narrow angle light distribution which shows 1st Embodiment. It is the perspective view seen from the front side of the illuminating device same as the above. It is the perspective view seen from the rear side of the illuminating device same as the above. It is a perspective view of the decomposition | disassembly state of the light control unit of an illuminating device same as the above. It is sectional drawing of an illuminating device same as the above. It is the perspective view seen from the front side of the illuminating device of medium angle light distribution same as the above. It is sectional drawing of an illuminating device same as the above. It is the perspective view seen from the front side of the illuminating device of wide angle light distribution same as the above. It is sectional drawing of an illuminating device same as the above. It is a perspective view of the heat radiator which shows the illuminating device of 2nd Embodiment. The flow of the cooling air in a heat radiator same as the above is shown, (a) is a side view of Comparative Example 1, (b) is a side view of Comparative Example 2, and (c) is a side view of this embodiment. It is a graph which shows the result of having measured the temperature of Comparative Examples 1 and 2 and this embodiment same as the above.

  Hereinafter, the first embodiment will be described with reference to FIGS. 1 to 9.

  1 to 3 show a projector as the lighting fixture 10. The lighting device 10 includes a common main body 11, a light source unit 12 disposed on the rear side of the common main body 11, a light control unit 13 disposed on the front side of the common main body 11, a fixed base 14 that supports the common main body 11, And a power supply unit 15 disposed on the fixed base 14. The common main body 11, the light source unit 12, and the light control unit 13 constitute a lamp body 16 that is a projector main body.

  The common body 11 is formed by, for example, aluminum die casting. The common main body 11 has a cylindrical frame portion 20, and an opening portion 21 that opens forward and backward is formed inside the frame portion 20.

  As shown in FIG. 5, a rear common attachment portion 22 for attaching the light source unit 12 is formed on the rear side of the frame portion 20. The rear common attachment portion 22 has an octagonal depression 23 formed on the rear surface of the frame portion 20, and a plurality of attachment holes are formed in the depression 23.

  A front common attachment portion 24 for attaching the light control unit 13 is formed on the front side of the frame portion 20. The front common mounting portion 24 has an annular recess 25 formed on the front surface of the frame portion 20, and a plurality of mounting holes 26 are formed in the recess 25. Further, the front common mounting portion 24 has a plurality of bosses 28 each having a mounting hole 27 inside the frame portion 20.

  As shown in FIG. 1, a support portion 29 for reinforcement of the frame portion 20 is integrally formed on the rear side inside the frame portion 20. The support portion 29 includes a central ring portion 30 and a plurality of connection portions 31 that connect the ring portion 30 and the frame portion 20. An opening 21 is opened inside the ring part 30, between the ring part 30, the connection part 31, and the frame part 20.

  Cylindrical shaft portions 32 connected to the fixed base 14 are provided on both sides of the frame portion 20 in the left-right direction (width direction).

  The light source unit 12 includes a plurality of light source units 35 and a heat radiator 36 to which the light source units 35 are attached.

  The light source unit 35 includes a substrate 37 and a light emitting unit 39 in which LEDs 38 as a plurality of light emitting elements are mounted on the front surface of the substrate 37. The light source unit 35 is configured by a COB (Chip On Board) module. The substrate 37 is fixed to the front surface of the radiator 36 with screws and is thermally connected. In the present embodiment, one light source unit 35 is arranged at the front center portion of the heat radiating body 36, and six light source units 35 are arranged around the front surface of the heat radiating body 36 so as to surround the central light source unit 35. However, it is not limited to such an arrangement.

  The radiator 36 is made of a metal material such as aluminum or magnesium having a thermal conductivity of 50 to 250 W / m · K. The radiator 36 includes a base 40 and a plurality of radiating fins 41 protruding from the rear surface of the base 40. The base 40 is formed in an octagonal flat plate shape. The thickness of the base 40 is 8 to 15 mm, preferably 9 to 11 mm. In the base 40, wiring holes 40a penetrating the front and rear of the base 40 are formed. A plurality of light source sections 35 are attached to the front surface of the base 40. A plurality of grooves are formed on the rear surface of the base 40 along the vertical direction (longitudinal direction), and the front ends of the radiation fins 41 are press-fitted and fixed in these grooves. The plurality of radiating fins 41 are arranged in the base 40 along the up-down direction, and an interval for air to flow between the radiating fins 41 adjacent in the left-right direction is provided. The interval between the radiation fins 41 is 6 to 10 mm, preferably 7 to 9 mm.

  A light source unit side common attachment portion 42 as a heat radiator common attachment portion attached to the rear common attachment portion 22 of the common main body 11 is formed in the peripheral portion of the radiator 36, that is, the periphery of the base 40. Then, the light source unit side common mounting portion 42 is fitted into the recess portion 23, a plurality of screws 43 that pass through the light source unit side common mounting portion 42 are screwed into the mounting holes of the common main body 11, and the heat radiator 36 is connected to the common main body 11. It is fixed to.

  1 to 4 show a light control unit 13 with a narrow-angle light distribution. The light control unit 13 includes a reflector unit 46, a case 47 that accommodates the reflector unit 46, and a translucent cover 48 that closes the front surface of the case 47.

  The reflector unit 46 includes a plurality of reflectors 49 and a holder 50 that holds the reflectors 49 together.

  Each reflector 49 has a cylindrical shape that opens forward and backward, and is formed in a parabolic shape that expands from the rear side toward the front side. A mirror-like reflection surface is formed on the inner surface of each reflector 49. A flange 51 is projected around the front end of each reflector 49.

  The holder 50 is formed in a flat disk shape, and a plurality of insertion holes 52 through which the plurality of reflectors 49 are inserted are formed. A reflector flange 51 inserted through the insertion hole 52 is fixed to the holder 50 with a screw. In the present embodiment, one reflector is fixed to the center portion of the holder 50 and six reflectors are fixed to the peripheral portion corresponding to the arrangement of the light source portions 35. A plurality of attachment holes 53 are formed in the holder 50 corresponding to the attachment holes 27 of the bosses 28 of the common main body 11.

  In order to attach the reflector unit 46 to the common main body 11, a plurality of attachment members 54 and screws 55 through which the attachment members 54 are inserted are used. The attachment member 54 is cylindrical and is formed with a length dedicated for narrow-angle light distribution. The attachment member 54 functions as a spacer interposed between the holder 50 and the boss 28 of the common main body 11. The screw 55 is screwed into the mounting hole 27 of the boss 28 through the mounting hole 53 and the mounting member 54 of the holder 50 to fix the reflector unit 46 to the common main body 11. Then, by fixing the reflector unit 46 to the common main body 11, the rear end opening of each reflector 49 is disposed opposite to the light emitting part 39 of each light source part 35, and the light emitted from the light emitting part 39 is reflected by the reflector 49. Is incident on the inside.

  The case 47 is made of a metal material such as aluminum. The case 47 has a cylindrical shape that opens forward and backward, and is formed to expand from the rear side toward the front side. A flange 56 is bent on the inner diameter side at the rear end of the case 47. The flange 56 is fitted in the recess 25 of the common body 11 and is fixed to the common body 11 by screwing a screw 57 that passes through the flange 56 into the mounting hole 26.

  The holder 50 and the mounting member 54 of the reflector unit 46, the flange 56 of the case 47, etc. are configured as a light control unit side common mounting portion 58 for mounting the light control unit 13 to the front common mounting portion 24 of the common main body 11. Has been.

  The translucent cover 48 is made of transparent glass and is formed in a disc shape. The peripheral portion of the translucent cover 48 is disposed at the front end of the case 47 through the sealing material 59, and the translucent cover 48 is fixed to the front surface of the case 47 by caulking the front end of the case 47.

  The fixed base 14 includes an installation part 61 and a pair of arms 62 bent from both sides of the installation part 61. The installation part 61 is fixed to a construction or the like with bolts 63. The arm 62 is raised from the installation portion 61 obliquely forward. A shaft member 64 that is inserted into the shaft portion 32 of the common main body 11 and rotatably supported is attached to the tip of the arm 62.

  A disc 65 is screwed to the side surface of the common main body 11, and a clamping member 66 that allows the disc 65 to be clamped between the arm 62 and the arm 62 is disposed inside the arm 62, and is rotatably attached to the arm 62. A handle 67 is screwed to the clamping member 66. When the handle 67 is tightened, the disc 65 is sandwiched between the arm 62 and the clamping member 66, the common main body 11 is fixed to the arm 62, and when the handle 67 is loosened, the common main body 11 is attached to the arm 62. In contrast, the light irradiation direction of the illumination device 10 can be changed.

  The power supply unit 15 includes a power supply circuit 70 and a power supply case 71 that houses the power supply circuit 70. The power circuit 70 converts the AC power into a predetermined DC power and supplies it to the LED 38 of the light source unit 35. The power supply case 71 is attached by a mounting bracket 72 connected between the pair of arms 62. A power supply cable 73 for supplying AC power to the power supply circuit 70 and a power supply cable 74 for supplying DC power converted by the power supply circuit 70 to the LED 38 of the light source unit 35 are connected to the power supply case 71. The leading end of the power feeding cable 74 is connected to a wiring box 75 attached to the rear part of the common main body 11. The wiring box 75 electrically connects the power supply cable 74 and the light source unit 35 through the wiring hole 40a of the base 40. The power supply circuit 70 enables dimming control of each light source unit 35 independently.

  Next, operation | movement of the illuminating device 10 of 1st Embodiment is demonstrated.

  To assemble the lighting device 10, the light source unit side common attachment portion 42 of the light source unit 12 is attached to the rear common attachment portion 22 of the common main body 11. That is, the base 40 of the radiator 36 is fitted into the recess 23 of the common main body 11, and the base 40 is screwed from the rear side. Each light source unit 35 and the wiring box 75 are electrically wired.

  The light control unit side common attachment portion 58 of the light control unit 13 is attached to the front common attachment portion 24 of the common main body 11. That is, first, the flange 56 of the case 47 is fitted into the recess 25 of the common main body 11, and the flange 56 is screwed from the front side. Subsequently, the reflector unit 46 is screwed to the common main body 11 from the front side via the mounting member 54. Subsequently, the translucent cover 48 is disposed at the front end of the case 47 and the front end of the case 47 is caulked, and the translucent cover 48 is fixed to the front end of the case 47.

  Note that the light source unit 12 and the light control unit 13 may be attached to the common main body 11 in any order.

  The fixed base 14 is attached to the common main body 11, and the power supply cable 74 from the power supply unit 15 arranged on the fixed base 14 is connected to the wiring box 75.

  Then, by supplying direct current power from the power supply unit 15 to each light source unit 35, each light source unit 35 emits light, light from each light source unit 35 enters into each reflector 49, light distribution is controlled, The light whose light distribution is controlled is transmitted through the translucent cover 48 and emitted to illuminate the illumination object.

  The heat generated at the time of light emission of each light source unit 35 is transmitted to the base 40 of the heat radiating body 36 and from the base 40 to the plurality of heat radiating fins 41, and is naturally radiated from the plurality of heat radiating fins 41 to the atmosphere.

  In addition, the light output of the light source unit 35 can be dimmed and controlled by the power supply circuit 70. In this case, for example, the light output efficiency of the light source unit 35 decreases little from a dimming ratio of 100%, which is all-lighting, to a dimming ratio of about 50%, but further toward a dimming ratio of 0%. As the light is dimmed, the light output efficiency of the light source unit 35 is significantly reduced. Therefore, all the light source units 35 are continuously dimmed from a dimming ratio of 100% to a dimming ratio of about 50%, and when the dimming ratio is 50% or less, the plurality of light source units 35 are sequentially turned off one by one. Shine. Thus, by dimming control that combines continuous dimming and step dimming, dimming can be performed while suppressing a decrease in light output efficiency of the light source unit 35.

  1 to 5 show an illumination device 10 configured to have a narrow-angle light distribution. Since the illumination device 10 includes the light control unit 13 for narrow-angle light distribution, the emitted light has a narrow-angle light distribution.

  6 and 7 show the illumination device 10 configured to have a medium-angle light distribution. Since the illumination device 10 includes the light control unit 13 for medium-angle light distribution, the emitted light becomes medium-angle light distribution.

  This illuminating device 10 has the same configuration as the illuminating device 10 configured in the narrow-angle light distribution shown in FIGS. 1 to 5 except that the light control unit 13 for medium-angle light distribution is different. That is, the common main body 11, the light source unit 12, and the like are common. The light control unit 13 for medium-angle light distribution differs from the light control unit 13 for narrow-angle light distribution mainly in the longitudinal dimensions of the case 47, the reflector 49, the mounting member 54, and the like. The mounting structure for the common main body 11 is common. That is, the light control unit 13 for medium angle light distribution also includes the light control unit side common mounting portion 58. Therefore, the light control unit 13 for medium-angle light distribution can be attached to the common main body 11 instead of the light control unit 13 for narrow-angle light distribution.

  8 and 9 show the illumination device 10 configured to have a wide-angle light distribution. Since the illumination device 10 includes the light control unit 13 for wide-angle light distribution, the emitted light is a wide-angle light distribution.

  This illuminating device 10 has the same configuration as the illuminating device 10 configured in the narrow-angle light distribution shown in FIGS. 1 to 5 except that the light control unit 13 for wide-angle light distribution is different. That is, the common main body 11, the light source unit 12, and the like are common. And, the light control unit 13 for wide-angle light distribution is different from the light control unit 13 for narrow-angle light distribution mainly in the longitudinal direction of the case 47, the reflector 49, the mounting member 54, etc. The mounting structure for the common main body 11 is common. That is, the light control unit 13 for wide-angle light distribution also includes the light control unit side common mounting portion 58. Therefore, the light control unit 13 for wide-angle light distribution can be attached to the common main body 11 instead of the light control unit 13 for narrow-angle light distribution.

  The light control unit 13 for wide-angle light distribution can share the case 47 and the light-transmitting cover 48 of the light control unit 13 for medium-angle light distribution, but the reflector unit 46 has a different configuration. In this case, the reflector unit 46 is close to the common main body 11 side, and a space between the front surface of the reflector unit 46 and the rear surface of the translucent cover 48 is widened. The louver 78 may be disposed inside the light control unit 13 using this space. The louver 78 is attached to the front surface of the reflector unit 46. The louver 78 can block the emission of light in an arbitrary direction. Furthermore, by arranging the louver 78 inside the light control unit 13, it is possible to reduce the size of the lighting device 10 and to prevent the louver 78 from being affected by wind or the like when installed outdoors. Can do.

  Thus, in the illumination device 10 of the present embodiment, the light control unit 13 having different light distribution angles can be combined with the common main body 11. Therefore, if only the light control unit 13 combined with the common main body 11 is changed, the common main body 11 is changed. The light source unit 12 and the fixed base 14 can be used in common.

  Further, the light source units 12 having different light outputs can be combined with the common main body 11. The light source unit 12 having a different light output is different in, for example, the brightness of the light source unit 35, the number of the light source units 35, and the like, and the heat dissipation performance of the radiator 36 is also different accordingly. In this case, if only the light source unit 12 combined with the common main body 11 is changed, the common main body 11, the light control unit 13, the fixed base 14 and the like can be used in common.

  Further, the light control unit 13 having a different light distribution angle and the light source unit 12 having a different light output can be arbitrarily combined with the common main body 11.

  Therefore, according to the lighting device 10, the light source unit 12 having a different light output and the light control unit 13 having a different light distribution can be combined with the rear common attachment portion 22 and the front common attachment portion 24 of the common main body 11, respectively. This enables the common main body 11 to be used as a common structure.

  Next, a second embodiment is shown in FIGS. In addition, the same code | symbol is used about the same structure as 1st Embodiment, and the description of the structure and effect is abbreviate | omitted.

  As shown in FIG. 10, the heat dissipating fin 41 of the heat dissipating body 36 has a projecting dimension from the base 40 larger on the upper side than the lower side, and the rear end of the heat dissipating fin 41 is formed in an inclined shape.

  For example, if the heat radiation performance is insufficient with the projection size of the radiation fin 41 shown in Comparative Example 1 in FIG. 11A, the overall projection size of the radiation fin 41 is set as shown in Comparative Example 2 in FIG. Although the heat dissipation performance can be ensured by increasing the size, there is a disadvantage that the mass of the heat radiator 36 is greatly increased.

  As shown in this embodiment of FIG. 11 (c), by increasing the protruding dimension on the upper side from the lower side of the radiating fin 41, the increase in the mass of the radiator 36 is suppressed while ensuring the desired heat radiating performance. can do.

  In FIG. 12, the result of having measured the temperature of LED38 of the light source part 35 arrange | positioned in the up-down direction in the comparative example 1, the comparative example 2, and this embodiment is shown. In the drawing, the lower LED 38 is indicated as A, the intermediate LED 38 is indicated as B, and the upper LED 38 is indicated as C.

  In Comparative Example 1, the temperature of the lowermost light source unit 35 is high and the temperature difference between the upper and lower light source units 35 is large. In Comparative Example 2, the temperature of the lowermost light source unit 35 can be lowered compared to Comparative Example 1, but the temperature difference between the upper and lower light source units 35 is still large.

  In the present embodiment, the temperature of the lowermost light source unit 35 can be lowered as compared with Comparative Examples 1 and 2, and the temperature difference between the upper and lower light source units 35 can be reduced. This is because heat is transferred from the light source part 35 at each height position to the radiation fin 41, so that the temperature tends to increase toward the upper side of the radiation fin 41, but the protrusion size on the upper side of the radiation fin 41 is large and the heat radiation performance is increased. Therefore, the temperature of the upper and lower light source sections 35 can be averaged. Furthermore, since the rear end of the heat radiating fin 41 is inclined, it is easy for cold air to enter the gap between the heat radiating fins 41 from any height position on the rear end side of the heat radiating fin 41, and the heat radiating performance can be improved. .

  When the lighting device 10 has a sealed structure, a sealing material may be interposed between the connecting portions of the members. As the sealing material, general silicone rubber may be used. However, since silicone rubber has a property that gas easily permeates, depending on use conditions, chlorine gas, sulfur hydrogen, or the like, which is an active gas, may enter the lighting device 10 and affect the light source unit 35. In such a case, gas permeation can be reduced by applying grease to the connecting portions of the members and the silicone rubber. Examples of the grease material include polytetrafluoroethylene (PTFE) and fluorine-based oil. The film thickness of the grease is preferably about 100 to 200 μm. If the gas permeability of the silicone rubber is 1, the grease gas permeability is about 0.0025, and the chlorine gas can be reliably reduced from entering the lighting device 10.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

10 Lighting equipment
11 Common body
12 Light source unit
13 Light control unit
14 Fixed base
22 Rear common attachment
24 Front common mounting
35 Light source
36 Heat sink
38 LEDs as light-emitting elements
40 base
41 Radiation fin
47 cases
48 Translucent cover
49 Reflector
78 louvers

Claims (1)

A body having a plurality of openings that open back and forth;
A light source unit using light emitting elements, and a light source unit that is disposed on the front side and has a heat radiator on the back side, and is disposed from the back side of the opening of the main body;
A reflector for controlling light distribution, disposed on the front side of the opening of the common main body and facing the light source unit;
A translucent cover disposed on the front side of the reflector;
An illumination device comprising:

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