EP2902702A1 - Dispositif d'éclairage - Google Patents

Dispositif d'éclairage Download PDF

Info

Publication number
EP2902702A1
EP2902702A1 EP14182986.1A EP14182986A EP2902702A1 EP 2902702 A1 EP2902702 A1 EP 2902702A1 EP 14182986 A EP14182986 A EP 14182986A EP 2902702 A1 EP2902702 A1 EP 2902702A1
Authority
EP
European Patent Office
Prior art keywords
light
light source
section
common
mounting section
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP14182986.1A
Other languages
German (de)
English (en)
Inventor
Ryotaro Matsuda
Yoshiro Oka
Katsuya Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Lighting and Technology Corp
Original Assignee
Toshiba Lighting and Technology Corp
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 Toshiba Lighting and Technology Corp filed Critical Toshiba Lighting and Technology Corp
Publication of EP2902702A1 publication Critical patent/EP2902702A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/0083—Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane
    • 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
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/002—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for interchangeability, i.e. component parts being especially adapted to be replaced by another part with the same or a different function
    • 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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/02—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using parallel laminae or strips, e.g. of Venetian-blind type
    • 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
    • F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
    • F21V23/023—Power supplies in a casing
    • 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
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • F21V29/763—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
    • 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
    • F21W2131/107—Outdoor lighting of the exterior of buildings
    • 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

  • Embodiments described herein relate generally to a lighting device of which a light source is a light emitting element.
  • a lighting device that is used as a projector for lighting, for example, a building and the like.
  • an LED is used as a light source instead of an HID lamp before now due to improvement of performance of the LED as a light emitting element.
  • a structure in which heat generated by the LED is radiated with a radiator is employed, but since an amount of generated heat is different depending on a light output of the LED, a radiator having radiation performance depending on the amount of heat is used. Furthermore, in order to control light distribution of the light emitted from the LED, a reflector that is necessary for the light distribution is used. Thus, a plurality of types of lighting devices are prepared depending on a combination of the different light outputs and the different light distributions.
  • a lighting device includes: a common body, a light source unit, and a light control unit.
  • the common body is open on front and rear sides and has a front-side common mounting section on a front side and a rear-side common mounting section on a rear side.
  • the light source unit has a plurality of light source sections using a light emitting element and a radiator in which the light source sections are disposed, and is mounted on the rear-side common mounting section of the common body.
  • the light control unit has a plurality of reflectors respectively facing the light source sections and controlling light distribution, and is mounted on the front-side common mounting section of the common body.
  • the lighting device it is possible to respectively combine the light source unit having different light outputs and the light control unit having different light distributions with respect to the rear-side common mounting section and the front-side common mounting section of the common body, and it is possible to expect to use the common body as a common structure.
  • FIGS. 1 to 3 illustrate a projector as a lighting device 10.
  • the lighting device 10 includes a common body 11, a light source unit 12 that is disposed on a rear portion side of the common body 11, a light control unit 13 that is disposed on a front portion side of the com mon body 11, a fixing stand 14 that supports the common body 11, and a power supply unit 15 that is disposed in the fixing stand 14.
  • a lamp body 16 that is a projector body is configured of the common body 11, the light source unit 12, and the light control unit 13.
  • the common body 11 is, for example, formed by aluminum die-casting.
  • the common body 11 has a cylindrical frame section 20 and an opening section 21 that is open on front and rear sides is formed inside the frame section 20.
  • a rear-side common mounting section 22 on which the light source unit 12 is mounted is formed on the rear side of the frame section 20.
  • the rear-side common mounting section 22 has an octagonal recessed section 23 that is formed on a rear surface of the frame section 20 and a plurality of mounting holes are formed in the recessed section 23.
  • a front-side common mounting section 24 on which the light control unit 13 is mounted is formed on a front side of the frame section 20.
  • the front-side common mounting section 24 has an annular recessed section 25 that is formed on the front surface of the frame section 20 and a plurality of mounting holes 26 are formed in the recessed section 25. Furthermore, the front-side common mounting section 24 has a plurality of bosses 28 having mounting holes 27 inside the frame section 20, respectively.
  • a support section 29 for reinforcing the frame section 20 is integrally formed on the rear portion side on the inside of the frame section 20.
  • the support section 29 includes a ring section 30 in the center and a plurality of connection sections 31 that connect the ring section 30 and the frame section 20. Then, the opening section 21 is open between the ring section 30, the connection sections 31, and the frame section 20 on the inside of the ring section 30.
  • Cylindrical shaft sections 32 that are connected to the fixing stand 14 protrude on both sides of the frame section 20 in a left-right direction (width direction).
  • the light source unit 12 includes a plurality of light source sections 35 and a radiator 36 on which the light source sections 35 are mounted.
  • the light source section 35 includes a substrate 37 and a light emitting section 39 on which LEDs 38 as a plurality of light emitting elements are mounted on a front surface of the substrate 37.
  • the light source section 35 is configured of a Chip On Board (COB) module.
  • COB Chip On Board
  • the substrate 37 is fixed and thermally connected to the front surface of the radiator 36 by screws.
  • one light source section 35 is disposed in the center portion of a front surface of the radiator 36 and six light source sections 35 are disposed in a peripheral portion of the front surface of the radiator 36 so as to surround the light source section 35 at the center thereof, but the embodiment is not limited to such a disposition form.
  • the radiator 36 is formed of a metal material such as aluminum or magnesium having thermal conductivity of 50 W/m ⁇ K to 250 W/m ⁇ K.
  • the radiator 36 includes a base 40 and a plurality of radiation fins 41 that protrude from a rear surface of the base 40.
  • the base 40 is formed in an octagonal flat shape.
  • a thickness of the base 40 is 8 m m to 15 m m and preferably 9 m m to 11 mm.
  • a wiring hole 40a passing through the front and rear of the base 40 is formed in the base 40.
  • the plurality of light source sections 35 are mounted on the front surface of the base 40.
  • a plurality of grooves are formed on the rear surface of the base 40 along an up-down direction (vertical direction) and front ends of the radiation fins 41 are press-fitted and fixed into the grooves.
  • the plurality of radiation fins 41 are disposed in the base 40 along the up-down direction and a gap 41 a in which air circulates is provided between radiation fins 41 adjacent to each other in the left-right direction.
  • the gap 41 a between the radiation fins 41 is 6 mm to 10 mm and preferably 7 mm to 9 mm.
  • a light source unit-side common mounting section 42 as a radiator common mounting section that is mounted on the rear-side common mounting section 22 of the common body 11 is formed in a peripheral portion of the radiator 36, that is, a peripheral portion of the base 40. Then, the light source unit-side common mounting section 42 is fitted into the recessed section 23 and a plurality of screws 43 passing through the light source unit-side common mounting section 42 are screwed into mounting holes of the common body 11, and the radiator 36 is fixed to the common body 11.
  • FIGS. 1 to 4 illustrate the light control unit 13 for narrow-angle light distribution.
  • the light control unit 13 includes a reflector unit 46, a case 47 accommodating the reflector unit 46, and a light-transmitting 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 integrally holds the reflectors 49.
  • Each reflector 49 has a cylindrical shape that is open on front and rear sides and is formed in a parabolic shape of which an opening widens from the rear side to the front side.
  • a mirror surface-form reflection surface is formed on the inner surface of each reflector 49.
  • a flange 51 protrudes on a periphery of a front end of each reflector 49.
  • the holder 50 is formed having a flat disk shape and a plurality of through holes 52 passing through the plurality of reflectors 49 are formed in the holder 50.
  • the flange 51 of the reflector passing through the through holes 52 is fixed to the holder 50 by screws.
  • one reflector is fixed to the center portion of the holder 50 and six reflectors are fixed to the peripheral portion corresponding to the disposition of the light source sections 35.
  • a plurality of mounting holes 53 are formed in the holder 50 corresponding to the mounting holes 27 of the bosses 28 of the common body 11.
  • the mounting member 54 has a cylindrical shape and is formed having a length of a dedicated narrow-angle light distribution.
  • the mounting member 54 functions as a spacer that is interposed between the holder 50 and the boss 28 of the common body 11.
  • the screw 55 is screwed into the mounting hole 27 of the boss 28 through the mounting hole 53 of the holder 50 and the mounting member 54, and fixes the reflector unit 46 to the common body 11.
  • a rear end opening of each reflector 49 is arranged facing the light emitting section 39 of each light source section 35 and light emitted from the light emitting section 39 is made to be incident on the reflector 49 by fixing the reflector unit 46 to the common body 11.
  • the case 47 is formed of a metal material such as aluminum.
  • the case 47 has a cylindrical shape that is open on front and rear sides, and is formed so that the opening widens from the rear side to the front side.
  • a flange 56 is bent on an inner diameter side in a rear end of the case 47. The flange 56 is fitted into the recessed section 25 of the com mon body 11 and screws 57 passing through the flange 56 are screwed into the mounting holes 26 thereby being fixing to the common body 11.
  • the holder 50 and the mounting member 54 of the reflector unit 46, the flange 56 of the case 47, and the like are configured as a light control unit-side common mounting section 58 for mounting the light control unit 13 on the front-side common mounting section 24 of the common body 11.
  • the light-transmitting cover 48 is a transparent glass and is formed in a disk shape. Then, a peripheral portion of the light-transmitting cover 48 is disposed in a front end of the case 47 through a seal material 59 and the front end of the case 47 is caulked whereby the light-transmitting cover 48 is fixed to the front surface of the case 47.
  • the fixing stand 14 includes a mounting section 61 and a pair of arms 62 that are bent from both sides of the mounting section 61.
  • the mounting section 61 is fixed to a building by a bolt 63.
  • the arm 62 rises inclined forward from the mounting section 61.
  • a shaft member 64 that rotatably supports the common body 11 by insertion into the shaft section 32 of the common body 11 is mounted on the front end of the arm 62.
  • a disk 65 is screwed to a side surface of the common body 11 and a clamping member 66 capable of clamping the disk 65 between the arm 62 and the common body 11 is disposed on the inside of the arms 62, and a handle 67 that is rotatably mounted on the arm 62 is screwed to the clamping member 66. Then, when the handle 67 is operated to be fastened, the disk 65 is clamped between the arm 62 and the clamping member 66 and the common body 11 is fixed to the arms 62, and when the handle 67 is loosened, the common body 11 is capable of rotating with respect to the arms 62 and it is possible to change a light irradiation direction of the lighting device 10.
  • the power supply unit 15 includes a power supply circuit 70 and a power supply case 71 accommodating the power supply circuit 70.
  • the power supply circuit 70 supplies DC power supply to the LED 38 of the light source section 35 by converting AC power supply to a predetermined DC power supply.
  • the power supply case 71 is mounted by a mounting bracket 72 that is connected between the pair of arms 62.
  • a power supply cable 73 that supplies the AC power supply to the power supply circuit 70 and a power feeding cable 74 that supplies the DC power supply that is converted by the power supply circuit 70 to the LED 38 of the light source section 35 are connected to the power supply case 71.
  • a front end of the power feeding cable 74 is connected to a wiring box 75 mounted on a rear portion of the common body 11.
  • the wiring box 75 is electrically connected to the power feeding cable 74 and the light source section 35 through the wiring hole 40a of the base 40.
  • the power supply circuit 70 is capable of independently performing light dimming control of each light source section 35.
  • the light source unit-side common mounting section 42 of the light source unit 12 is mounted on the rear-side common mounting section 22 of the common body 11. That is, the base 40 of the radiator 36 is fitted into the recessed section 23 of the common body 11 and the base 40 is screwed from the rear side.
  • Each light source section 35 and the wiring box 75 are electrically wired.
  • the light control unit-side common mounting section 58 of the light control unit 13 is mounted on the front-side common mounting section 24 of the common body 11. That is, first, the flange 56 of the case 47 is fitted into the recessed section 25 of the common body 11 and the flange 56 is screwed from the front side. Subsequently, the reflector unit 46 is screwed to the common body 11 from the front side through the mounting member 54. Subsequently, the light-transmitting cover 48 is disposed in the front end of the case 47 and the front end of the case 47 is caulked, and then the light-transmitting cover 48 is fixed to the front end of the case 47.
  • the mounting order of the light source unit 12 and the light control unit 13 with respect to the common body 11 may be arbitrary.
  • the fixing stand 14 is mounted on the common body 11 and the power feeding cable 74 from the power supply unit 15 disposed in the fixing stand 14 is connected to the wiring box 75.
  • each light source section 35 emits light, the light from each light source section 35 is incident on each reflector 49, the light distribution is controlled, and the light in which the light distribution is controlled penetrates the light-transmitting cover 48 and is emitted, and then lights a light target by supplying the DC power supply from the power supply unit 15 to each light source section 35.
  • Heat that is generated when emitting the light from each light source section 35 is transmitted to the base 40 of the radiator 36 and is transmitted from the base 40 to the plurality of radiation fins 41, and is naturally radiated from the plurality of radiation fins 41 to the atmosphere.
  • the light dimming control of the light output of the light source section 35 by the power supply circuit 70.
  • lowering of light output efficiency of the light source section 35 is small when performing the light dimming from a light dimming ratio of 100% in which all lights are lighted to the light dimming ratio of approximately 50%, but when performing the light dimming further to the light dimming ratio of 0%, the light output efficiency of the light source section 35 is remarkably lowered.
  • the light dimming of all light source sections 35 is continuously performed from the light dimming ratio of 100% to the light dimming ratio of approximately 50% and the light dimming is performed stepwise in the light dimming of 50% or less so that the plurality of light source sections 35 are lighted off sequentially one by one. It is possible to perform the light dimming while suppressing the lowering of the light output efficiency of the light source section 35 by the light dimming control in which the continuous light dimming and the stepwise light dimming are combined.
  • FIGS. 1 to 5 illustrate the lighting device 10 that is configured of the narrow-angle light distribution. Since the lighting device 10 includes the light control unit 13 for the narrow-angle light distribution, the emitted light gains the narrow-angle light distribution.
  • FI GS. 6 and 7 illustrate the lighting device 10 that is configured of middle-angle light distribution. Since the lighting device 10 includes the light control unit 13 for the middle-angle light distribution, the emitted light gains the middle-angle light distribution.
  • the lighting device 10 has the same configuration as that of the lighting device 10 that is configured of the narrow-angle light distribution illustrated in FIGS. 1 to 5 except that the light control unit 13 for the middle-angle light distribution is different. That is, the common body 11, the light source unit 12, and the like are common to both lighting devices. Then, the light control unit 13 for the middle-angle light distribution has the case 47, the reflector 49, the mounting member 54, and the like which mainly have different dimensions in the front-rear direction from those of the light control unit 13 for the narrow-angle light distribution, and the mounting structures with respect to the common body 11 are common. That is, the light control unit 13 for the middle-angle light distribution also includes the light control unit-side common mounting section 58. Therefore, it is possible to mount the light control unit 13 for the middle-angle light distribution on the common body 11 instead of the light control unit 13 for the narrow-angle light distribution.
  • FIGS. 8 and 9 illustrate the lighting device 10 that is configured of wide-angle light distribution. Since the lighting device 10 includes the light control unit 13 for the wide-angle light distribution, the emitted light gains the wide-angle light distribution.
  • the lighting device 10 has the same configuration as that of the lighting device 10 that is configured of the narrow-angle light distribution illustrated in FIGS. 1 to 5 except that the light control unit 13 for the wide-angle light distribution is different. That is, the common body 11, the light source unit 12, and the like are common to both lighting devices. Then, the light control unit 13 for the wide-angle light distribution has the case 47, the reflector 49, the mounting member 54, and the like which mainly have different dimensions in the front-rear direction from those of the light control unit 13 for the narrow-angle light, and the mounting structures with respect to the common body 11 are common. That is, the light control unit 13 for the wide-angle light distribution also includes the light control unit-side common mounting section 58. Therefore, it is possible to mount the light control unit 13 for the wide-angle light distribution on the common body 11 instead of the light control unit 13 for the narrow-angle light distribution.
  • the light control unit 13 for the wide-angle light distribution can have the case 47 and the light-transmitting cover 48 in common with the light control unit 13 for the middle-angle light distribution, but the reflector units 46 are different from each other.
  • the reflector unit 46 is close to the common body 11 side and a space between the front surface of the reflector unit 46 and the rear surface of the light-transmitting cover 48 is enlarged.
  • a louver 78 may be disposed inside the light control unit 13 by using the space.
  • the louver 78 is mounted on the front surface of the reflector unit 46. Then, it is possible to block the emission of the light by the louver 78 in an arbitrary direction. Furthermore, it is possible to miniaturize the lighting device 10 and to prevent the louver 78 from receiving influence of wind and the like when mounting outdoors by disposing the louver 78 inside the light control unit 13.
  • the light control unit 13 of different angle light distributions can be assembled in the common body 11, it is possible to commonly use the common body 11, the light source unit 12, the fixing stand 14, and the like if only the light control unit 13 that is assembled in the common body 11 is changed.
  • the light source unit 12 of different light outputs in the common body 11.
  • the light source unit 12 of different light outputs for example, brightness of the light source section 35, the number of the light source sections 35, or the like is different and thus radiation performance of the radiator 36 is also different. I n this case, when only changing the light source unit 12 that is assembled in the common body 11, it is possible to commonly use the common body 11, the light control unit 13, the fixing stand 14, and the like.
  • the lighting device 10 it is possible to respectively assemble the light source unit 12 of different light outputs and the light control unit 13 of different angle light distributions with respect to the rear-side common mounting section 22 and the front-side common mounting section 24 of the common body 11, and to use the common body 11 as the common structure.
  • FIGS. 10 to 12 illustrate a second embodiment. Moreover, the same reference numerals are given to the same configurations as those of the first embodiment and description of the configurations and the operational effects will be omitted.
  • a radiation fin 41 of a radiator 36 is configured such that a protrusion dimension from a base 40 increases from a lower portion side to an upper portion side thereof and a rear end of the radiation fin 41 is formed in an inclined shape.
  • FIG. 12 illustrates measured results of temperatures of the LED 38 of the light source section 35 disposed in the up-down direction in Comparison Example 1, Comparison Example 2, and the embodiment. Moreover, in the view, the LED 38 on the lower portion side is represented as A, the LED 38 of an intermediate portion is represented as B, and the LED 38 on the upper portion side is represented as C.
  • Comparison Example 1 the temperature of the light source section 35 of the lowermost portion is high and a temperature difference between the upper and lower light source sections 35 is great.
  • Comparison Example 2 it is possible to decrease the temperature of the light source section 35 of the lowermost portion further than that of Comparison Example 1, but the temperature difference between the upper and lower light source sections 35 is still great.
  • the embodiment it is possible to decrease the temperature of the light source section 35 of the lowermost portion further than that of Comparison Examples 1 and 2 and to reduce the temperature difference between the upper and lower light source sections 35. Since the heat is transmitted from the light source section 35 of each height position to the radiation fin 41, the temperature is likely to be increased on the upper portion side of the radiation fin 41, but since the protrusion dimension on the upper portion side of the radiation fin 41 is increased and the radiation performance is high, it is possible to average the temperature of the upper and lower light source sections 35. Furthermore, since the rear end of the radiation fin 41 has the inclined shape, air is likely to enter the gap 41 a between the radiation fins 41 from any height position on the rear end side of the radiation fin 41 and it is possible to improve the radiation performance.
  • the seal material may be interposed in a connection section of each member.
  • the seal material general silicone rubber may be used.
  • silicone rubber has a property of allowing gases to penetrate, there is a concern that chlorine gas, hydrogen sulfide, and the like that are active gases may intrude into the lighting device 10 and then influence the light source section 35 depending on usage conditions. In such a case, it is possible to reduce the penetration of gas by applying grease on the connection section of each member or the silicone rubber.
  • a material for the grease polytetrafluroethylene (PTFE), fluorine-based oil, and the like may be used.
  • a film thickness of the grease is preferably approximately 100 ⁇ m to 200 ⁇ m. Then, if gas permeability of the silicone rubber is 1, the gas permeability of grease is approximately 0.0025 and it is possible to reliably reduce entry of chlorine gas into the lighting device 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP14182986.1A 2014-01-31 2014-09-01 Dispositif d'éclairage Withdrawn EP2902702A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2014017809A JP6187764B2 (ja) 2014-01-31 2014-01-31 照明装置

Publications (1)

Publication Number Publication Date
EP2902702A1 true EP2902702A1 (fr) 2015-08-05

Family

ID=51429122

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14182986.1A Withdrawn EP2902702A1 (fr) 2014-01-31 2014-09-01 Dispositif d'éclairage

Country Status (3)

Country Link
EP (1) EP2902702A1 (fr)
JP (1) JP6187764B2 (fr)
CN (1) CN204227117U (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7007643B2 (ja) * 2017-12-11 2022-02-10 東芝ライテック株式会社 照明器具
US11408592B2 (en) * 2018-08-10 2022-08-09 Signify Holding B.V. Integrated louvres for beam control in an LED lighting device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090043215A (ko) * 2007-10-29 2009-05-06 주식회사 웰라이트 가로등용 조명장치
EP2129963A1 (fr) * 2007-03-08 2009-12-09 Lyracom Dispositif d'eclairage a led
US20110075409A1 (en) * 2009-09-25 2011-03-31 Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. Led lamp
US8025422B1 (en) * 2010-05-28 2011-09-27 Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. Illumination device with reflectors
CN203036430U (zh) * 2012-10-19 2013-07-03 东芝照明技术株式会社 照明器具
KR101284156B1 (ko) * 2012-12-11 2013-07-10 고인홍 독자적으로 점소등되는 ｌｅｄ어레이들을 갖는 ｌｅｄ 조명장치

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5445846B2 (ja) * 2010-01-26 2014-03-19 東芝ライテック株式会社 照明装置
JP5612380B2 (ja) * 2010-06-24 2014-10-22 株式会社アイ・ライティング・システム Ｌｅｄ照明器具
JP5685723B2 (ja) * 2010-10-26 2015-03-18 パナソニックＩｐマネジメント株式会社 照明器具
JP3168299U (ja) * 2011-01-26 2011-06-09 日本発條株式会社 反射部材の取付構造
JP6179760B2 (ja) * 2013-04-01 2017-08-16 東芝ライテック株式会社 照明器具

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2129963A1 (fr) * 2007-03-08 2009-12-09 Lyracom Dispositif d'eclairage a led
KR20090043215A (ko) * 2007-10-29 2009-05-06 주식회사 웰라이트 가로등용 조명장치
US20110075409A1 (en) * 2009-09-25 2011-03-31 Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. Led lamp
US8025422B1 (en) * 2010-05-28 2011-09-27 Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. Illumination device with reflectors
CN203036430U (zh) * 2012-10-19 2013-07-03 东芝照明技术株式会社 照明器具
EP2722582A1 (fr) * 2012-10-19 2014-04-23 Toshiba Lighting & Technology Corporation Luminaire
KR101284156B1 (ko) * 2012-12-11 2013-07-10 고인홍 독자적으로 점소등되는 ｌｅｄ어레이들을 갖는 ｌｅｄ 조명장치
EP2743576A2 (fr) * 2012-12-11 2014-06-18 Vision X Asia Co., Ltd. Appareil d'éclairage à DEL possédant des ensembles de DEL allumés ou éteints indépendamment

Also Published As

Publication number Publication date
CN204227117U (zh) 2015-03-25
JP2015146233A (ja) 2015-08-13
JP6187764B2 (ja) 2017-08-30

Similar Documents

Publication Publication Date Title
JP5445846B2 (ja) 照明装置
JP2006294526A (ja) Ｌｅｄ素子を使用したスポットライト
US20120300480A1 (en) Lighting apparatus
KR20170021662A (ko) 엘이디 조명기구
JP2009032590A (ja) 多段層基板によって達成されかつ熱を即座に放散するｌｅｄランプ
JP2011154832A5 (fr)
JP5758424B2 (ja) 照明器具
EP2902702A1 (fr) Dispositif d'éclairage
EP2679892A1 (fr) Dispositif d'éclairage et système d'éclairage
JP6694604B2 (ja) 照明装置
JP5105452B2 (ja) 照射方向を変更可能とした自動車運搬船の倉内作業用ｌｅｄ照明装置
JP4944221B2 (ja) 多段層基板によって達成されかつ熱を即座に放散するｌｅｄランプ
JP2015212997A (ja) 照明装置
JP6628480B2 (ja) 照明器具
JP6264099B2 (ja) 照明器具
JP2016162597A (ja) 照明装置
JP2020167094A (ja) 照明器具
JP6433016B2 (ja) 大光量ｌｅｄ投光器
JP6432804B2 (ja) 照明装置
JP2019023979A (ja) 照明灯具
JP2012204200A (ja) 照明器具
JP2011210513A (ja) ミニクリプトンランプ型ｌｅｄ電球
JP6624546B2 (ja) 照明器具
JP2018113229A (ja) 照明装置
JP2019164971A (ja) 照明器具

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20140901

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20160206