WO2014132530A1 - 照明器具 - Google Patents

照明器具 Download PDF

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Publication number
WO2014132530A1
WO2014132530A1 PCT/JP2013/083762 JP2013083762W WO2014132530A1 WO 2014132530 A1 WO2014132530 A1 WO 2014132530A1 JP 2013083762 W JP2013083762 W JP 2013083762W WO 2014132530 A1 WO2014132530 A1 WO 2014132530A1
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WO
WIPO (PCT)
Prior art keywords
power supply
supply case
heat
heat dissipating
light
Prior art date
Application number
PCT/JP2013/083762
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English (en)
French (fr)
Japanese (ja)
Inventor
貴裕 三上
秀一 藤野
慶一郎 木下
Original Assignee
株式会社アイ・ライティング・システム
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社アイ・ライティング・システム filed Critical 株式会社アイ・ライティング・システム
Publication of WO2014132530A1 publication Critical patent/WO2014132530A1/ja

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14—Adjustable mountings
    • F21V21/30—Pivoted housings or frames
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • F21V23/007—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array enclosed in a casing
    • F21V23/008—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array enclosed in a casing the casing being outside the housing of the lighting device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/507—Cooling arrangements characterised by the adaptation for cooling of specific components of means for protecting lighting devices from damage, e.g. housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/03—Lighting devices intended for fixed installation of surface-mounted type
    • F21S8/033—Lighting devices intended for fixed installation of surface-mounted type the surface being a wall or like vertical structure, e.g. building facade
    • F21S8/036—Lighting devices intended for fixed installation of surface-mounted type the surface being a wall or like vertical structure, e.g. building facade by means of a rigid support, e.g. bracket or arm
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a luminaire using a light emitting element as a light source.
  • the lighting fixture which equipped the light source with several LED which is a light emitting element is known.
  • this type of lighting fixture there is known a lighting fixture having a lighting fixture main body in which a light source case housing an LED and a power supply case housing a power supply circuit are integrally formed (see, for example, Patent Document 1).
  • the light source case and the power supply case are integrally configured as a lighting fixture body, the light source case and the power supply case are thermally coupled.
  • the heat of the LED is transferred to the power circuit
  • problems such as damage.
  • This invention is made in view of the situation mentioned above, and an object of this invention is to provide the lighting fixture which can suppress the thermal influence between a light source case and a power supply case.
  • the present invention is a heat dissipating member which is formed in a bowl shape, has a light emitting element at the bottom, emits light of the light emitting element to the outside from the opening end, and has heat dissipating fins on the outer surface.
  • a power supply case for housing the power supply circuit of the light emitting element and having a radiation fin on the outer surface, and a mounting arm for mounting the power supply case supporting the heat radiating body to a fixing portion;
  • a luminaire characterized in that a space is opened between a heat dissipating body and a heat dissipating fin and provided on the mounting arm side of the heat dissipating body.
  • the present invention is characterized in that, in the above-mentioned lighting device, the power supply case is attached obliquely to the attachment arm side of the heat dissipating member.
  • a parabolic reflector forming a narrow-angle light distribution is provided on the heat dissipating body so as to surround the light emitting element, and a tip portion of the reflecting mirror is provided from the heat dissipating body It is characterized in that it is protruded and the power supply case is attached obliquely to one end of the heat radiating body.
  • the present invention is characterized in that, in the above-mentioned lighting device, the radiation fins of the heat radiation body are formed at different angles.
  • the present invention is characterized in that, in the above-mentioned lighting device, a glove is provided at the opening end of the heat dissipating member.
  • the thermal coupling between the heat dissipating element and the power source case is weakened. Thermal effects during the This leads to a reduction in size and weight of the lighting equipment, and an improvement in heat dissipation efficiency, leading to a reduction in power consumption and energy savings.
  • FIG. 1 is a perspective view of a projector according to a first embodiment of the present invention.
  • FIG. 2 is a block diagram of a light projector, (A) is a front view, (B) is a top view, (C) is a bottom view, (D) is a side view.
  • FIG. 3 is a rear view of the light projector.
  • FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG.
  • FIG. 5 is a cross-sectional view taken along the line V--V of FIG.
  • FIG. 6 is a plan view of the LED module.
  • FIG. 7 is a schematic view for explaining the pivoting range of the projector main body and the power supply case.
  • FIG. 8 is a cross-sectional view of a projector according to a second embodiment of the present invention.
  • FIG. 1 is a perspective view of a projector 1 according to a first embodiment of the present invention.
  • 2 is a block diagram of the light projector 1
  • FIG. 2 (A) is a front view
  • FIG. 2 (B) is a plan view
  • FIG. 2 (C) is a bottom view
  • FIG. 2 (D) is a side view.
  • FIG. 3 is a rear view of the light projector 1
  • FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 2 (A).
  • FIG. 1 is a perspective view of a projector 1 according to a first embodiment of the present invention.
  • FIG. 2 is a block diagram of the light projector 1
  • FIG. 2 (A) is a front view
  • FIG. 2 (B) is a plan view
  • FIG. 2 (C) is a bottom view
  • FIG. 2 (D) is a side view.
  • FIG. 3 is a rear view of the light projector 1
  • FIG. 4 is
  • the projector 1 of the present embodiment is a luminaire which is installed outdoors and illuminates distant places several tens to several hundreds of meters away.
  • the light distribution of the light projector 1 is a narrow-angle light distribution with a half beam angle of 5 to 8 degrees, and by suppressing the spread of the irradiation spot diameter at a distance, the illuminance at the distance is increased. There is.
  • the light projector 1 includes a light projector main body 3 as an instrument main body containing a light source, a power case 5 for supplying power to the light source, and a mounting for mounting the light projector main body 3
  • the arm 7 is provided.
  • the projector main body 3 includes a heat sink 9 having a function as a case body for containing a light source and a heat radiation function, and a front cover 11 (glove) covering the front of the heat sink 9.
  • the heat dissipating member 9 is formed by die casting using a material having high thermal conductivity, etc., and a number of vertical heat dissipating fins 21 and horizontal heat dissipating fins 23 are integrally formed on the outer surface, As shown in FIG. 4, a plurality of LED modules 25 as light sources and a plurality of reflecting mirrors 26 as optical elements are housed.
  • the reflecting mirror 26 is formed in a substantially rotational paraboloid shape, which is an example of a concave shape, and the inner surface thereof is formed on the paraboloid reflecting surface 32.
  • the heat dissipating member 9 is formed in a horizontally-long oval shape in which the two reflecting mirrors 26 can be accommodated in a front view, and in a plan view and a side view, FIG. 1, FIG. 2 (B) and FIG. As shown in), it is formed in a so-called bowl shape (cup shape) in a shape in which the horizontal width and the vertical width are gradually narrowed from the front side to the rear side so as to match the diameter reduction of the reflecting mirror 26.
  • the inner bottom (hereinafter, referred to as "inner bottom") 9A of the heat radiating body 9 is formed on a flat surface substantially rectangular in a front view, and the LED module 25 is disposed on the inner bottom 9A.
  • the LED module 25 includes a horizontally long rectangular LED mounting substrate 31.
  • On the mounting surface 31A two LED packages 29 as light emitting elements as light sources are provided.
  • the reflecting mirror 26 is provided for each of the LED packages 29. That is, on the base end side of the reflecting mirror 26, an opening 35 is provided at a position corresponding to the optical axis K, and the reflecting mirror 26 is introduced so as to introduce the light emitting unit 30 of the LED package 29 from the opening 35. Is provided.
  • the light emitting unit 30 is disposed at a substantially focal position of the rotation parabolic reflection surface 32, whereby the light of the light emitting unit 30 is substantially collimated by the rotation parabolic reflection surface 32 and emitted.
  • the Rukoto The Rukoto.
  • the rotation parabolic reflection surface 32 of the reflection mirror 26 obtains a narrow-angle light distribution with a half beam angle of about 5 to 8 degrees, and in order to obtain such a light distribution, It is formed in a so-called horn shape in which the total length along the rotation center axis (optical axis K) is relatively long with respect to the diameter of the opening end as compared with the paraboloid mirror. More specifically, the light emitted from the reflecting mirror 26 is directly emitted without being incident on the paraboloid reflecting surface 32 and the reflected light component collimated by the reflection on the paraboloid reflecting surface 32. The direct light component is included.
  • This direct light component is light that spreads at a predetermined spread angle, and the maximum angle ⁇ 1 of the spread angle is an angle formed by the light axis from the light emitting portion 30 toward the edge of the tip opening 33 and the optical axis K. Generally defined.
  • the half beam angle of light emitted from the reflecting mirror 26 increases. Therefore, with this paraboloid reflecting surface 32, the half beam angle is made to be a small value of 5 to 8 degrees by extending the total length of the paraboloid reflecting surface 32 to reduce the maximum angle ⁇ 1. . Further, by extending the entire length of the paraboloid reflecting surface 32, the component of the reflected light in the emitted light of the reflecting mirror 26 increases, and the direct light component decreases. As the direct light component is reduced as described above, the light component which is not controlled by the rotation parabolic reflection surface 32, that is, the non-parallel component is reduced, so that blurring of the outline of the irradiation spot can be suppressed.
  • the front cover 11 is a substantially cylindrical member made of transparent resin that is attached to the opening end 9 B of the heat radiating body 9 and covers the reflecting mirror 26 that protrudes from the opening 10.
  • the front end opening 26A of the reflecting mirror 26 is close to the back surface of the front cover 11, and the light emitted from the front end opening 33 of the reflecting mirror 26 has the diameter almost unchanged.
  • the light is incident on the front surface 11A of the front cover 11 and emitted from the front surface 11A of the front cover 11. That is, the front surface 11A of the front cover 11 can also be regarded as the light emission surface of the light projector 1.
  • FIG. 6 is a plan view of an LED module 25 provided with such an LED package 29.
  • the LED package 29 is a package of a chip on board (COB) structure in which a large number of LEDs 27 (light emitting elements) are densely arranged, and has a light emitting unit 30 in the form of a square in front view (may be circular).
  • COB chip on board
  • the LED package 29 of the COB structure has a large amount of light and has high brightness due to the dense arrangement of a large number of LEDs 27. Furthermore, the decrease in luminous efficiency when these LEDs 27 are driven with maximum output is small. Therefore, by using the LED package 29 as a light source of the light projector 1, a large amount of light can be obtained with high luminous efficiency.
  • the LED package 29 has a large amount of heat generation. Therefore, in the LED module 25, a ceramic substrate having high insulation and high thermal conductivity is used for the LED mounting substrate 31. Furthermore, in the light projector 1, the LED mounting substrate 31 is disposed in contact with the inner bottom 9 A of the heat sink 9 to efficiently transfer the heat of the LED package 29 to the heat sink 9.
  • a number of vertical heat dissipating fins 21 and horizontal heat dissipating fins 23 are integrally formed on the outer surface of the heat dissipating body 9, and the heat transferred from the LED package 29 to the heat dissipating body 9 The heat is dissipated into the air from the fins 21 and the horizontal radiation fins 23.
  • the vertical heat dissipating fins 21 are formed by arranging in a width direction a large number of fins extending from the top surface 15 to the back surface 12 and the bottom surface 13 of the heat dissipating body 9.
  • the fins of the vertical radiation fins 21 are erected in the vertical direction, so that the heat of the bottom surface 13 rises along the gap between the vertical radiation fins 21 as shown by the arrow A in FIG. Leads smoothly to the side of the As a result, the heat is not accumulated on the bottom surface 13 side, and the reduction of the heat radiation performance on the bottom surface 13 side is prevented.
  • this light projector 1 may be installed and used in a state of standing vertically with the side surface 17 of the heat radiating body 9 facing the ground side.
  • the vertical heat dissipating fins 21 extend in the horizontal direction and overlap each other vertically, so the rise of the hot air is inhibited, and the hot air is retained between the vertical heat dissipating fins 21 and the heat dissipating performance is improved. descend. Therefore, even in the case of stand-up installation, horizontal heat dissipating fins 23 extending in different directions with respect to the vertical heat dissipating fins 21 are provided on the heat dissipating body 9 so that the cooling performance of the heat dissipating body 9 is maintained.
  • the horizontal heat dissipating fins 23 extend in the front and back of each of the left and right side surfaces 17 of the heat dissipating body 9, and these are arranged vertically in parallel.
  • the heat air rises between the horizontal heat dissipating fins 23 as shown by the arrow B in FIG.
  • the cooling performance of the heat dissipating member 9 is maintained without any damage.
  • the vertical heat dissipating fins 21 and the horizontal heat dissipating fins 23 mainly contributes to heat dissipation changes.
  • the vertical heat dissipating fins 21 and 21 both of the vertical heat dissipating fins 21 and the horizontal heat dissipating fins 23 extend to a position corresponding to the LED package 29.
  • the heat dissipating performance of the LED package 29 is always maintained at a good level regardless of which of the horizontal heat dissipating fins 23 is used.
  • the power supply case 5 is formed by die-casting using a material having high thermal conductivity as in the case of the heat dissipating body 9 and is formed in a substantially rectangular parallelepiped shape having a width that fits within the lateral width of the heat dissipating body 9 of the projector main body 3. It is a body.
  • the power supply substrate 49 is housed in the power supply case 5, and a power supply circuit for supplying power to the LED package 29 housed in the radiator 9 is mounted on the power substrate 49.
  • the power supply substrate 49 is inserted from the side of the lower end surface 5B of the power supply case 5, and is disposed close to the upper back surface 47 in the inside thereof.
  • the heat dissipating fins 61 are integrally provided on the upper and back surfaces 47, and the heat of the power supply substrate 49 is transmitted from the upper and back surfaces 47 through the heat dissipating fins 61 and dissipated. Further, the lower end face 5B is provided with a plurality of heat radiation fins 63 extending in the horizontal direction, which also enhances the cooling performance of the power supply case 5.
  • the power supply case 5 has the upper end face 5A at the open end 9B of the bottom surface 13 of the heat sink 9, ie, in the middle and back It is connected by a bolt 14 and attached so that the lower end face 5B side faces the back side (rear side) of the heat radiating body 9 and extends obliquely downward with respect to the front-rear direction of the heat radiating body 9. More specifically, a mounting surface for attaching the upper end surface 5A of the power supply case 5 in contact with the bottom surface 13 of the radiator 9 on the tip end side of the radiator 9 and in the middle of front and rear as viewed from the projector main body 3 13A is provided.
  • the mounting surface 13A is formed to have a predetermined inclination, and the inclination of the power supply case 5 is defined by the inclination. Further, on the bottom surface 13 of the heat sink 9, the vertical heat dissipating fins 21 extending from the back surface 12 extend approximately to the vicinity of the connection with the power supply case 5, as shown in FIG.
  • the mounting arm 7 is a member for attaching the light projector main body 3 and the power supply case 5 to the fixing portion 70 (installation surface) of the structure to be installed as shown in FIG. 4 and as shown in FIG.
  • An arm piece 53 and a mounting piece 55 are provided.
  • the pair of arm pieces 53 is rotatably provided on a pivot shaft 51 provided on the side of the upper end surface 5A on each of both side surfaces of the power supply case 5.
  • the power supply case 5 is disposed on the side where the arm piece 53 of the mounting arm 7 extends from the radiator 9 (that is, the side of the fixing portion 70 to which the mounting arm 7 is fixed as viewed from the radiator 9).
  • the mounted piece 55 is integrally provided so as to be supported by the pair of arm pieces 53, and as shown in FIG. 2C, a groove 55A and a hole 55B used for mounting on the fixing portion 70 are formed. They are fixed to the fixing portion 70 by appropriately using them.
  • FIG. 7 is a schematic view for explaining the rotation range of the light projector main body 3 and the power supply case 5.
  • the light projector main body 3 and the power supply case 5 rotate within an angle ⁇ with respect to a parallel position in which the optical axis K is parallel to the surface of the fixing portion 70 to which the mounting arm 7 is attached. It is possible to move. That is, the direction of the optical axis K of the light emitted from the light projector main body 3 can be varied within the range of the angle ⁇ .
  • the mounting arm 7 is attached to the plane of the fixing portion 70 extending horizontally.
  • the projector main body 3 and the power supply case 5 rotate between the parallel position where the optical axis K is parallel to the horizontal direction and the inclined position where the optical axis K inclines obliquely upward with respect to the horizontal direction by the angle ⁇ . It becomes movable.
  • the light projector main body 3 is rotated about the rotation axis 51 in accordance with the target irradiation direction. It is held unrotatably by the holding mechanism provided at 51.
  • the pivot shaft 51 is provided on the side of the upper end surface 5A of the power supply case 5, that is, in the middle before and after viewed from the light projector main body 3, so that the weight balance between the front and back of the light projector 1 is well maintained.
  • the weight on the rear side of the pivot shaft 51 is mainly due to the weight of the heat sink 9, the weight from the base end of the reflecting mirror 26 to the middle point, and the weight of the power supply case 5
  • the weight of the tip is mainly contributed by the tip opening 33 from the midpoint of the reflecting mirror 26. Then, these front and rear weight moments are configured to be balanced around the rotation shaft 51.
  • the power supply case 5 extends obliquely from the middle of the bottom surface 13 of the light projector main body 3 to the rear, and is received by the front surface 48 of the power supply case 5 as shown by arrow C in FIG. Since the air is smoothly flowed back, the wind pressure load is suppressed.
  • the wind pressure load is reduced as the power supply case 5 becomes closer to horizontal.
  • the power supply case 5 extends from the middle of the light projector main body 3, that is, from the open end 9B of the heat radiating body 9, the LED housed inside the heat radiating body 9 is directly above this as shown in FIG.
  • the package 29 and the vertical radiation fin 21 are located. For this reason, if the power supply case 5 is too close to horizontal, the LED package 29 and the vertical radiation fins 21 and the power supply case 5 are thermally coupled to affect each other.
  • the vertical heat radiation extended to the bottom surface 13 of the heat radiating body 9 of the light projector main body 3 as shown in FIG. 4 and FIG. 5 by extending the power supply case 5 obliquely to the light projector main body 3.
  • a space S is provided between the fins 21 and the power supply case 5.
  • the projector main body 3 has a heat source HA indicated by a dot-and-dash circle at a position corresponding to the position of the LED package 29, and the power supply case 5 has an ellipse having a dashed line at a position corresponding to the arrangement position of the power supply substrate 49.
  • a heat source HB shown by.
  • the heat of the heat source HA is conducted to the vertical heat dissipating fins 21.
  • the thermal coupling between the vertical heat dissipating fins 21 of the bottom surface 13 of the heat sink 9 and the power supply case 5 is divided by the space S The thermal effect between them is suppressed.
  • the power supply case 5 extends at an angle ⁇ 2 of about 45 degrees with respect to the bottom surface 13 of the heat sink 9.
  • ⁇ 2 of about 45 degrees with respect to the bottom surface 13 of the heat sink 9.
  • the heat radiation fins 61 of the power supply case 5 are such that the height T from the upper back surface 47 is large toward the lower end surface 5B and toward the upper end surface 5A.
  • the height T of the heat radiating fin 61 becomes smaller, and the heat radiation from the heat radiating fin 61 can be suppressed. As a result, a good balance between the heat radiation performance of the power supply case 5 and the thermal coupling between the power supply case 5 and the heat radiating body 9 is achieved.
  • the heat of the power supply substrate 49 rises on the upper back surface 47 of the power supply case 5 and escapes from the space S to the outside. That is, the hot air of the power supply substrate 49 discharged from the portion of the upper and back surface 47 located below the horizontal heat dissipating fins 23 rises and reaches the bottom surface 13 of the heat dissipating member 9 as shown by the arrow D in FIG. Also, from the bottom surface 13 to the upper side along the back surface 12, escape from the space S to the outside.
  • the heat emitted from the portion of the upper and back surface 47 located below the vertical heat dissipating fins 21 is the vertical heat dissipating fins 21 provided on the back surface 12 of the heat dissipator 9, as shown by the arrow E in FIGS.
  • the vertical heat dissipating fins 21 provided on the back surface 12 of the heat dissipator 9, as shown by the arrow E in FIGS.
  • the thermal influence on the heat radiating body 9 can be suppressed. Further, as shown by the arrow F in FIG.
  • power supply case 5 is formed to have a length that does not protrude from back surface 12 of light projector main body 3 in plan view. This function is prevented, and dust, dust and the like to the radiation fins 63 are prevented from entering the power supply case 5.
  • the following effects can be obtained. That is, according to the light projector 1 of the present embodiment, since the power supply case 5 is provided with the space S between the vertical heat dissipating fins 21 of the heat dissipator 9, the space between the power supply case 5 and the heat dissipator 9 is Thermal bonding is suppressed, and the influence between the two is prevented.
  • the power supply case 5 is attached obliquely to the mounting arm 7 side of the heat radiating body 9, the heat radiation from the power supply case 5 and the heat radiation is reduced while the wind pressure load from the front side is reduced.
  • a space S between the vertical radiation fins 21 of the body 9 can be secured.
  • the reflecting mirror 26 having the paraboloid reflecting surface 32 forming the narrow-angle light distribution is provided to the heat radiating body 9 so as to surround the light emitting portion 30 of the LED package 29.
  • the tip of the power supply case 5 is configured to be attached obliquely to the opening end 9B of the heat dissipation body 9 with the tip thereof protruding from the heat dissipation body 9.
  • the heat dissipating member 9 is provided with the vertical heat dissipating fins 21 and the horizontal heat dissipating fins 23 extending in the opposite direction, the heat can be dissipated even when the projector 1 is installed vertically or horizontally. Performance degradation is prevented.
  • the front cover 11 is provided at the opening end 9B of the heat radiating body 9 as a glove.
  • the LED module 25 and the reflecting mirror 26 are not exposed to the outside, so that foreign materials can be prevented from being damaged by contact with these members.
  • FIG. 8 is a cross-sectional view of a projector 100 according to a second embodiment of the present invention.
  • the light projector 100 is configured in the same manner as the light projector 1 of the first embodiment, except that it has an optical lens 65 (optical member) instead of the reflecting mirror 26.
  • the optical lens 65 is provided to cover the light emitting unit 30 and has a control surface 30 A directed to the opening 10 side of the heat radiating body 9.
  • the optical lens 65 controls the light of the light emitting unit 30 to be collimated light and directed to the aperture 10, for example.
  • the same effect as that of the first embodiment can be obtained.
  • the light of the LED package 29 can be made as compared with the long reflecting mirror. The miniaturization of the optical member to be controlled can be expected.
  • the LED package 29 was illustrated as an example of a light emitting element, not only this but other light emitting elements, such as organic EL, may be sufficient.
  • the COB type module in which the LEDs 27 are densely arranged is illustrated as the LED package 29, the present invention is not limited to this, and the present invention is not limited to the one in which the LEDs 27 are densely arranged.
  • the power supply case 5 has the power supply substrate 49 placed close to the upper back surface 47 and housed therein, and the radiation fins 61 are provided on the upper back surface 47, but the present invention is not limited thereto. That is, as indicated by a broken line in FIG. 6 described above, the radiation fins 61 may be provided on the front surface 48 of the power supply case 5 and the power supply substrate 49 may be accommodated closer to the front surface 48 side.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
PCT/JP2013/083762 2013-03-01 2013-12-17 照明器具 WO2014132530A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013-040922 2013-03-01
JP2013040922A JP5758424B2 (ja) 2013-03-01 2013-03-01 照明器具

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WO2014132530A1 true WO2014132530A1 (ja) 2014-09-04

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JP (1) JP5758424B2 (enrdf_load_stackoverflow)
WO (1) WO2014132530A1 (enrdf_load_stackoverflow)

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JP6544513B2 (ja) * 2014-11-19 2019-07-17 三菱ケミカル株式会社 スポット照明装置
WO2016080004A1 (ja) * 2014-11-19 2016-05-26 三菱化学株式会社 スポット照明装置
KR101756187B1 (ko) * 2015-03-10 2017-07-26 대우조선해양 주식회사 Cob led 어레이를 사용한 소형 투광등
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