WO2011055659A1 - 大型led照明装置 - Google Patents
大型led照明装置 Download PDFInfo
- Publication number
- WO2011055659A1 WO2011055659A1 PCT/JP2010/068994 JP2010068994W WO2011055659A1 WO 2011055659 A1 WO2011055659 A1 WO 2011055659A1 JP 2010068994 W JP2010068994 W JP 2010068994W WO 2011055659 A1 WO2011055659 A1 WO 2011055659A1
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- WIPO (PCT)
- Prior art keywords
- led
- cooling liquid
- light emitting
- emitting element
- mounting base
- Prior art date
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Classifications
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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
- 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
- F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
- F21V29/773—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-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
- 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
-
- 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
-
- 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
- F21V29/51—Cooling arrangements using condensation or evaporation of a fluid, e.g. heat pipes
-
- 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
- F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
- F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
- F21S8/061—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension with a non-rigid pendant, i.e. a cable, wire or chain
-
- 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
- F21S8/08—Lighting devices intended for fixed installation with a standard
- F21S8/085—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light
- F21S8/086—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light with lighting device attached sideways of the standard, e.g. for roads and highways
-
- 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
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
-
- 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
- F21V29/505—Cooling arrangements characterised by the adaptation for cooling of specific components of reflectors
-
- 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
- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
- F21V3/06—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material
- F21V3/061—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material being glass
-
- 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
- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
- F21V3/06—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material
- F21V3/062—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material being plastics
-
- 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
- F21W2131/103—Outdoor lighting of streets or roads
-
- 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 an LED bulb that has been rapidly spreading in recent years for the purpose of replacing incandescent bulbs and mercury lamps with low energy efficiency.
- LED bulbs and halogen bulbs among conventional lighting devices with low energy efficiency
- a wide variety of alternative LED bulbs are manufactured and sold, but many are used in factories, large stores, warehouses, gymnasiums, etc.
- LED lamps that hang from the ceiling or are embedded in ceilings or walls it is difficult to dissipate a large amount of heat generated from LEDs.
- mercury lamps have an efficiency of 50 lumens / W, and it takes several minutes to reach practical illuminance after being turned on, and it is also necessary to wait a considerable amount of time until they are turned on again after being turned off. Since it is difficult to save energy even when it cannot be frequently turned ON / OFF, the market wants to provide a large LED lighting device with high energy saving performance instead of a mercury lamp.
- Patent Document 1 describes an LED lighting device in which a heat sink is attached to an LED lamp.
- the heat sink is air-cooled by a fan.
- the efficiency of LED light emitting elements that are readily available is approximately 80 lumens / W. Therefore, in order to make the illuminance of the LED lighting device equal to 20,000 lumens, which is the average illuminance of an existing 400 W mercury lamp, calculation is required. In addition, it is necessary to apply approximately 250 W of power to the LED. Actually, the mercury lamp radiates light around 360 degrees, whereas the emission of the LED light emitting element is confined in the hemisphere, so that the illumination efficiency is high correspondingly, and the actually required power may be 200 W or less.
- LED light-emitting elements are generally said to have a long life, but they are vulnerable to heat and depend on the manufacturing method and materials, etc. If the temperature of the LED light-emitting elements during lighting is kept at about 100 ° C., they will last for 40,000 hours or more. Although it can be expected, the temperature is said to be about 1 ⁇ 2 every 10 degrees. Therefore, the life of the LED lighting is affected by efficiently radiating the heat corresponding to the 140 W heater as described above and lowering the temperature of the LED light emitting element.
- the problem to be solved by the present invention is to replace the large-sized mercury lamp illuminating device that is frequently used in society.
- the shape is almost the same, and the heat generation from the LED light emitting element is efficiently performed while minimizing the increase in weight. It is providing the LED illuminating device which can thermally radiate well.
- the LED lighting device made to solve the above problems is an LED lighting device comprising an LED mounting base on which an LED light emitting element is mounted on the surface, and a heat radiating portion,
- the heat dissipating part is a) a cooling liquid enclosure part fixed to the back side of the LED mounting base and having a sealed space in which the cooling liquid is enclosed; b) A heat dissipating fin provided around the coolant enclosing portion.
- the heat generated from the LED light emitting element is guided to the heat radiating fin through the LED mounting base and the cooling liquid in contact with the back surface thereof, so that it can be efficiently dissipated.
- the heat of the LED light emitting element is more efficiently transmitted to the heat radiating fins.
- the present invention since an electric circuit for driving the LED light emitting element such as a power supply circuit and a control circuit of the LED lighting device can be accommodated inside the cooling liquid enclosure (in a state immersed in the cooling liquid), the present invention
- the LED lighting device according to the invention is space efficient.
- the electric circuit itself is immersed in the coolant, heat generated from the entire electric circuit is efficiently released. Therefore, a heat radiating body necessary for a general power supply circuit and an electronic circuit and a structure connected thereto are unnecessary, and the size of the electric circuit can be minimized, and a stable operation of the LED lighting device is ensured.
- all the electric circuits for driving the LED light emitting elements may be accommodated in the coolant enclosing part, or only a part may be accommodated.
- the air pressure in the space not filled with the cooling liquid in the cooling liquid enclosure is a negative pressure at room temperature (preferably close to a vacuum).
- the unevenness may be any shape such as a concentric ring shape or a number of standing pins. Further, in order to further improve the heat transfer between them, it is desirable to provide a heat pipe so as to protrude from the back surface of the LED mounting base separately from or in addition to the unevenness.
- the LED lighting device according to the present invention is provided with a sensor for detecting the temperature rise of the LED light emitting element, and the LED light emission detected thereby.
- a sensor for detecting the temperature rise of the LED light emitting element and the LED light emission detected thereby.
- This sensor may be provided on the LED light emitting element itself, or may be provided on the LED mounting base or in the vicinity thereof.
- FIG. 1 is a longitudinal sectional view (A) of a hanging type LED lighting device according to an embodiment of the present invention and a transverse sectional view (B) taken along the line XX 'in the same drawing.
- the cross-sectional view which shows the other example of a thermal radiation and electrical equipment part.
- the cross-sectional view which shows the further another example of a thermal radiation and electrical equipment part.
- the perspective view which shows an example of the protrusion part of a LED mounting board.
- the longitudinal cross-sectional view of the embedded type LED lighting apparatus which is another Example of this invention.
- mold LED illuminating device which are another Example of this invention.
- the longitudinal cross-sectional view which shows another structural example of the said hanging type LED lighting apparatus.
- FIG. 1 shows a hanging type LED lighting device which is a typical embodiment of the present invention.
- FIG. 1 (A) is a longitudinal sectional view of the lighting device (YY ′ line in FIG. 1 (B)).
- FIG. 1B is a cross-sectional view taken along the line XX ′ of FIG.
- a light emitting unit 10 is provided at the center of the LED lighting device.
- the light emitting unit 10 includes an LED mounting base 11 made of a material having high thermal conductivity such as aluminum and copper, and the LED mounting.
- the LED mounting board 12 is thermally fixed to the base 11 and a number of LED light emitting elements 13 mounted on the LED mounting board 12.
- a barrier 14 made of transparent or translucent resin or glass surrounds the LED mounting substrate 12. Thus, it is better to add it on the LED mounting base 11.
- the LED light emitting element 13 side when viewed from the LED mounting base 11 is hereinafter referred to as “front”, and the opposite direction is referred to as “rear”.
- a frustoconical reflecting mirror 19 that opens forward is attached to the outer peripheral side of the LED mounting base 11, and reflects light emitted from the light emitting unit 10 in a necessary direction.
- the reflecting mirror 19 can also serve as a heat dissipation mechanism that releases the heat of the LED light emitting element 13 forward.
- the heat radiation and electrical equipment part 20 has a thin cylindrical core part (coolant encapsulating part) 23 in the center part and a large number of radiating parts around the core part to enlarge the surface area. It comprises heat radiation fins 21 for efficiently performing radiation and heat transfer to air and heat radiation by air convection.
- the space inside the core portion 23 is an electronic circuit storage portion 22 that stores an electronic circuit that converts an alternating current of a commercial power source into a direct current for lighting the LED light emitting element 13.
- the electronic circuit storage unit 22 has a lower end sealed by the LED mounting base 11 described above, and an upper end closed by an upper sealing body 30 to form a sealed space.
- This space is filled with a coolant that is highly insulating and chemically stable and does not burn, such as silicon oil.
- a coolant that is highly insulating and chemically stable and does not burn, such as silicon oil.
- a low boiling point liquid having a boiling point of about 50 to 80 ° C. as the cooling liquid. This makes it possible to repeat the heat transfer cycle of absorbing and vaporizing the heat of the LED light-emitting element 13 and transferring the heat to the radiating fins 21 to liquefy it, thereby further efficiently releasing the heat of the LED light-emitting element 13. Will be able to.
- the upper sealing body 30 includes a sealing body 32 made of a resin having a seal 31 such as an O-ring, and the upper sealing body 30 that holds the sealing body 32 and dissipates the upper sealing body 30. It is comprised by the metal member 33 attached to 20.
- a hanging metal fitting 35 is fixed to the metal member 33 by a screw and a nut via a welded or screwed metal fitting 34, and the LED lighting device is suspended from the ceiling of the building by the hanging metal fitting 35.
- the cooling liquid When the cooling liquid is sealed in the electronic circuit housing portion 22, if the space is completely filled with the cooling liquid, a large pressure is generated due to the difference in the thermal expansion coefficient between the metal and the like constituting the space and the cooling liquid leaks. It is better to provide a slight space because problems such as soot are likely to occur.
- the recess 36 provided on the lower surface of the sealing body 32 in FIG. 1A provides this space. If this space is filled with normal pressure air, the pressure will change due to the thermal expansion of the air, so it should be negative (normally reduced from normal pressure) at normal temperature (5 to 35 ° C). A vacuum is recommended.
- a low table shape having an outer diameter slightly smaller than the inner diameter of the electronic circuit housing portion 22.
- the protrusion 15 is provided, and a sealing material 15a such as an O-ring is provided around it.
- the sealing material 15 a seals the lower end of the electronic circuit housing portion 22 by sealing between the protrusion 15 of the LED mounting base 11 and the inner wall of the electronic circuit housing portion 22.
- a ring-shaped fin 16 shown in FIG. 5 or a pin-shaped protrusion 17 shown in FIG. 6 is provided in the portion where the protrusion 15 of the LED mounting base 11 comes into contact with the coolant. The heat generated by the LED light emitting element 13 is efficiently transmitted to the coolant via the LED mounting base 11.
- the heat generated by the LED light emitting element 13 is efficiently transmitted to the coolant above the LED mounting base 11.
- convection is generated inside the cooling liquid, thereby quickly carrying the heat upward and dissipating it to the atmosphere through the large-area heat radiation fins 21 at the periphery and upper part.
- a low boiling point liquid having a boiling point of about 50 ° C. to 80 ° C. for this cooling liquid, heat transfer due to the vaporization-liquefaction cycle of this liquid is added thereto, and heat can be radiated more efficiently. At this time, as shown in FIG.
- the thickness of the core portion 23 of the heat dissipation and electrical equipment portion 20 is increased, heat is transferred directly from the LED mounting base 11 to the heat dissipation and electrical equipment portion 20, and the core portion 23 having the same thickness is used.
- heat can be transferred to the upper and surrounding radiating fins 21, but solid heat transfer has a larger thermal resistance than heat transfer by convection of the coolant, and a temperature difference is likely to occur between the upper part and the lower part.
- the temperature difference can be reduced by further increasing the thickness of the core portion 23 (particularly toward the outside), the weight increases, the cost increases, and the outer diameter of the core portion 23 increases. Therefore, if the surface area of the heat dissipating fins 21 per unit length is kept as it is, the heat dissipating and electrical component 20 will be further increased in size.
- the core portion 23 solid as shown in FIG. 3, it is possible to increase the cooling capacity without increasing the size, but the weight and cost increase, and it is necessary to mount the electronic circuit outside. Furthermore, the weight, size, and cost will increase.
- the core part 23 of the heat dissipation and electrical component part 20 has an opening, and the opening is sealed by the LED mounting base 11 to form a sealed space inside the core 23.
- the present invention is not limited to this.
- the core portion 23 containing the coolant may be sealed in advance, and the LED mounting base 11 may be fixed to the outer wall surface of the core portion 23.
- the unevenness for increasing the contact area with the coolant such as the ring-shaped fins 16 or the pin-shaped protrusions 17 described above, is on the back side of the surface on which the mounting base 11 of the core portion 23 is fixed. (That is, provided on the inner wall surface of the core portion 23).
- the first method for solving this problem is that the temperature rise caused by the difference in the installation direction is caused by the LED of the electronic circuit provided in the vicinity of the LED light emitting element 13 or on the LED mounting base 11 or in the electronic circuit housing portion 22. It is detected by a sensor provided at a location close to the light emitting element side, and the current flowing through the LED light emitting element 13 is reduced. Thereby, the temperature of the LED light emitting element 13 can be suppressed within a specified value.
- the second method is to reduce the substantial power by blinking the LED light emitting element 13 in a short cycle instead of reducing the current flowing through the LED light emitting element 13.
- this method it is possible to notify the user that an abnormal increase in temperature has occurred due to the flashing of light emission.
- the blinking interval (rhythm) may be changed depending on the temperature.
- the third method is a method of using one or a plurality of heat pipes 18 for heat transfer between the LED mounting base 11 and the coolant as shown in FIG.
- FIG. 9A In this street lamp type LED lighting device, as shown in FIG. 9A, a cooling liquid enclosure 52 is fixed to the rear (upper part in the drawing) of the light emitting unit 40 that emits light downward, and the cooling liquid A heat radiating fin 51 is provided on the top of the enclosing portion 52.
- the electronic circuit electronic circuit mounting portion 53
- FIGS. 9B to 9D are a plan view, a front view, and a side view of this embodiment.
- symbol 44 is a transparent barrier
- 54 is a lower cover.
- the LED lighting device of the present invention can be configured to perform heat transfer by a vaporization-liquefaction cycle of the coolant.
- a configuration example in this case is shown in FIG.
- symbol is attached
- a small amount (a volume equal to or less than half the volume of the internal space 25 at room temperature) of the cooling liquid 24 is sealed in the internal space 25 of the core part (cooling liquid enclosing part) 23.
- the internal space 25 has a boiling point of the coolant 24 lower than the upper limit of the temperature reached by the LED mounting base 11 when the LED light emitting element 13 is lit at room temperature (less than 100 ° C., preferably 50 ° C.
- the vacuum is maintained at an appropriate degree of vacuum so that the temperature is about 80 ° C.
- the internal space 25 of the core portion 23 can accommodate a part or all of the electric circuit for driving the LED light emitting element 13.
- the type of the cooling liquid 24 is not particularly limited, but it is desirable to use a non-flammable liquid having high insulation resistance in consideration of housing an electric circuit in the internal space 25.
- a liquid for example, Fluorinert (manufactured by Sumitomo 3M Limited), which is a fluorine-based inert liquid, can be suitably used.
- the internal space 25 of the core portion 23 needs to have a relatively high degree of vacuum in order to lower the boiling point of the cooling liquid. Therefore, instead of using the sealing materials 15a and 31 as shown in FIGS. 1 and 4, the protruding portions 15 of the LED mounting base 11 and the sealing body 32 are press-fitted and bonded to both ends of the cylindrical core portion 23, respectively. Or it is desirable to make it the structure which ensures the sealing of the internal space 25 by welding. Thereby, it is possible to maintain a high degree of vacuum over a long period of time.
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- 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)
Abstract
Description
該放熱部が、
a)該LED実装ベースの裏面側に固定され、内部に冷却液を封入した密閉空間を有する冷却液封入部と、
b)該冷却液封入部の周囲に設けられた放熱フィンとを備えることを特徴とするものである。
図1は本発明の代表的な実施例である吊り下げ型LED照明装置を示したもので、図1(A)は同照明装置の縦断面図(図1(B)のY-Y’線断面図)であり、図1(B)は図1(A)のX-X’線断面図である。
この冷却液として、沸点が50℃から80℃程度の低沸点液を使用する方法もある。これにより、LED発光素子13の熱を吸収して気化し、放熱フィン21にその熱を伝達して液化するという熱伝達サイクルの繰り返しが可能となり、更に効率よくLED発光素子13の熱を逃がすことができるようになる。
この際、図2のように、放熱兼電装部20のコア部23の肉厚を厚くし、LED実装ベース11から直接放熱兼電装部20に熱を伝え、同肉厚のコア部23を利用して上方及び周囲の放熱フィン21に熱を伝えることもできるが、冷却液の対流による伝熱に比べ固体伝熱は熱抵抗が大きく、上部と下部で温度差が生じやすい。
11…LED実装ベース
12…LED実装基板
13…LED発光素子
14…バリア
15…突起部
15a…シール材
16…フィン
17…ピン状突起物
18…ヒートパイプ
19…反射鏡
20…放熱兼電装部
21…放熱フィン
22…電子回路収納部
23…コア部
24…冷却液
25…内部空間
30…上部封止体
32…封止体
33…金属部材
34…金具
35…吊り下げ金具
36…冷却液膨張吸収用凹部
40…発光部
41…電子回路実装部
44…バリア
51…放熱フィン
52…冷却液封入部
53…電子回路実装部
54…下面カバー
Claims (9)
- 表面にLED発光素子を実装したLED実装ベースと、放熱部から成るLED照明装置であって、
該放熱部が、
a)前記LED実装ベースの裏面側に固定され、内部に冷却液を封入した密閉空間を有する冷却液封入部と、
b)該冷却液封入部の外面に設けられた放熱フィンと、
を備えることを特徴とするLED照明装置。 - 前記冷却液封入部の密閉空間内に前記冷却液が完全には満たされていないことを特徴とする請求項1に記載のLED照明装置。
- 前記冷却液封入部の密閉空間内の気圧が常温において負圧となっていることを特徴とする請求項2に記載のLED照明装置。
- 前記冷却液封入部に封入された状態における前記冷却液の沸点が、前記LED発光素子の点灯時におけるLED実装ベースの到達温度の上限値よりも低いことを特徴とする請求項2又は3に記載のLED照明装置。
- 前記LED実装ベースに固定されている箇所の冷却液封入部の内側に、前記冷却液との接触面積を増大させるための凹凸が設けられていることを特徴とする請求項1~4のいずれかに記載のLED照明装置。
- 前記LED実装ベースに固定されている箇所の冷却液封入部の内側に、前記冷却液側に突出するヒートパイプが設けられていることを特徴とする請求項1~5のいずれかに記載のLED照明装置。
- 更に、前記LED発光素子又はLED実装ベース又はそれらの近傍に設けられた温度センサと、該温度センサの検出値に基づき、前記LED発光素子に供給する電流を調節する電流調節手段と、を備えることを特徴とする請求項1~6のいずれかに記載のLED照明装置。
- 更に、前記LED発光素子又はLED実装ベース又はそれらの近傍に設けられた温度センサと、該温度センサの検出値に基づき、前記LED発光素子を点滅させる点滅制御手段と、を備えることを特徴とする請求項1~6のいずれかに記載のLED照明装置。
- 前記冷却液封入部の内部に、前記LED発光素子を駆動させるための電気回路の少なくとも一部が収納されていることを特徴とする請求項1~8のいずれかに記載のLED照明装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011539346A JPWO2011055659A1 (ja) | 2009-11-05 | 2010-10-26 | 大型led照明装置 |
US13/503,251 US20120206927A1 (en) | 2009-11-05 | 2010-10-26 | Large led lighting apparatus |
EP10828219A EP2498000A1 (en) | 2009-11-05 | 2010-10-26 | Large led lighting apparatus |
CN2010800498661A CN102597619A (zh) | 2009-11-05 | 2010-10-26 | 大型led照明装置 |
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JP2013191424A (ja) * | 2012-03-14 | 2013-09-26 | Formolight Technologies Inc | 反射型高天井灯 |
JP2015528191A (ja) * | 2012-07-23 | 2015-09-24 | グイジョウ ジーゼットジーピーエス カンパニー・リミテッド | 汎用型led電球の構成方法とクランプリング構造のled電球及びled灯具 |
JP2015526855A (ja) * | 2012-07-23 | 2015-09-10 | グイジョウ ジーゼットジーピーエス カンパニー・リミテッド | 汎用型led電球の構築方法及びフランジスナップリング式のled電球及びled灯具 |
JP2015529939A (ja) * | 2012-07-23 | 2015-10-08 | グイジョウ ジーゼットジーピーエス カンパニー・リミテッド | 汎用型led電球の構成方法およびフランジインナースナップリング式のled電球およびその灯具 |
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WO2014174389A1 (en) | 2013-04-23 | 2014-10-30 | Uab "Elmo Technologijos" | Controlled large area outdoor lighting system |
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US9627599B2 (en) * | 2013-07-08 | 2017-04-18 | Lg Electronics Inc. | LED lighting apparatus and heat dissipation module |
US9625104B2 (en) | 2013-07-10 | 2017-04-18 | Lg Electronics Inc. | LED light and method of manufacturing the same |
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USD733959S1 (en) * | 2014-08-05 | 2015-07-07 | General Luminaire Co., Ltd. | Spliceable lamp panel |
USD732730S1 (en) * | 2014-08-05 | 2015-06-23 | General Luminaire Co., Ltd. | Spliceable lamp panel |
JP2015008162A (ja) * | 2014-10-14 | 2015-01-15 | 株式会社フジタ | Led照明装置 |
JP2018206548A (ja) * | 2017-06-01 | 2018-12-27 | 株式会社アイ・ライティング・システム | 照明器具 |
Also Published As
Publication number | Publication date |
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CN102597619A (zh) | 2012-07-18 |
KR20120096500A (ko) | 2012-08-30 |
EP2498000A1 (en) | 2012-09-12 |
JPWO2011055659A1 (ja) | 2013-03-28 |
US20120206927A1 (en) | 2012-08-16 |
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