WO2010095701A1 - ランプ装置および照明器具 - Google Patents
ランプ装置および照明器具 Download PDFInfo
- Publication number
- WO2010095701A1 WO2010095701A1 PCT/JP2010/052489 JP2010052489W WO2010095701A1 WO 2010095701 A1 WO2010095701 A1 WO 2010095701A1 JP 2010052489 W JP2010052489 W JP 2010052489W WO 2010095701 A1 WO2010095701 A1 WO 2010095701A1
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- WO
- WIPO (PCT)
- Prior art keywords
- metal cover
- lamp device
- led
- lamp
- substrate
- 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
-
- 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
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/0005—Fastening of light sources or lamp holders of sources having contact pins, wires or blades, e.g. pinch sealed lamp
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
-
- 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
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
- F21V17/12—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by screwing
-
- 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
- F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
- F21V17/14—Bayonet-type fastening
-
- 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
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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
-
- 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
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- 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
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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
- F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
- F21V11/06—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using crossed laminae or strips, e.g. grid-shaped louvers; using lattices or honeycombs
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- 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
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
- F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
- F21Y2103/33—Elongate light sources, e.g. fluorescent tubes curved annular
-
- 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 lamp device using an LED as a light source, and a lighting fixture using the lamp device.
- a lamp device using a GX53 type base is generally made of a metal having a flat shape, a GX53-type base provided on the upper surface side, and a flat fluorescent lamp disposed as a light source separately from the base on the lower surface side.
- a cover is disposed and a lighting circuit for lighting the fluorescent lamp is accommodated inside the base.
- the heat which arises by lighting of a fluorescent lamp is thermally radiated outside from a metal cover, and the thermal influence on a lighting circuit etc. is controlled (for example, refer to patent documents 1).
- the light source Since the light source generates heat when the lamp device is lit, heat dissipation is required. In particular, when an LED that generates a larger amount of heat than the discharge lamp is used as the light source, if the heat is not sufficiently dissipated, the temperature of the LED itself increases, causing the LED to thermally deteriorate and cause a short life. Sufficient heat dissipation is required.
- This invention is made in view of such a point, and when using LED as a light source, the lamp apparatus which can prescribe
- the lamp device is a substrate on which chip-shaped LEDs are mounted; a lighting device for lighting the LEDs; and a substantially cylindrical shape having an outermost diameter D of 80 to 150 mm and a height H of 5 to 25 mm. 2 ⁇ (D / 2) H / W, which is the area of the outer peripheral surface per total input power W, is in the range of 200 to 800 mm 2 / W, and the metal cover provided in thermal contact with the substrate And;
- the substrate may be, for example, a flat plate having one surface on which chip-shaped LEDs are mounted and another surface that can be in thermal contact with the metal cover.
- the lighting device may be placed anywhere.
- the metal cover is made of a metal having excellent heat conductivity such as aluminum and is formed in a substantially cylindrical shape, and even if a substrate mounting portion is formed in which the other surface side of the substrate comes into surface contact and is in thermal contact. I do not care.
- the outer peripheral surface portion of the metal cover may have a diametrical cross-sectional shape inclined or a curved surface shape.
- a plurality of fins may be provided on the outer peripheral surface portion of the metal cover to improve heat dissipation, or a communication hole communicating with the inside and the outside of the metal cover may be formed.
- the outermost diameter D of the metal cover is 80 to 150 mm, preferably 85 to 100 mm. If it is smaller than these ranges, a sufficient heat radiation area is not secured, and if it is larger than these ranges, the lamp device and the lamp device are provided. The lighting fixtures that use will become larger.
- the height H of the metal cover is 5 to 25 mm, preferably 10 to 20 mm. If it is thinner than these ranges, a sufficient heat radiation area is not secured and it is difficult to attach and detach, and if it is thicker than these ranges, it is thin. Cannot be realized.
- 2 ⁇ (D / 2) H / W which is the area of the outer peripheral surface per total input power W, is in a range of 200 to 800 mm 2 / W.
- the area of the outer peripheral surface may be an apparent surface area, and even if the actual surface area is increased due to the tapered shape of the outer peripheral surface being inclined or the formation of radiating fins, it is apparent. Is defined by the surface area. If it is smaller than 200 mm 2 / W, sufficient heat dissipation performance cannot be obtained, and if it is larger than 800 mm 2 / W, the apparatus becomes large.
- a base such as the GX53 type, a reflector for controlling the light of the LED, a light-transmitting cover for covering the LED, and the like may be provided, but this is not an essential configuration of the present invention.
- the lamp device is provided with a substantially cylindrical metal cover having an outermost diameter D of 80 to 150 mm; provided in thermal contact with the metal cover, and a chip-shaped LED is made of the metal
- a plurality of LEDs are mounted in the circumferential direction around the center point of the cover, and the center of the LED is separated from the outermost edge of the metal cover to the center side by (D / 2) / 3 or more, and the metal cover A substrate mounted within a range of (D / 2) / 4 or more from the center to the outer edge side; a lighting device for lighting the LEDs mounted on the substrate in a range of total input power W of 5 to 20 W; Is provided.
- the metal cover is made of a metal having excellent heat conductivity such as aluminum and is formed in a substantially cylindrical shape, and even if a substrate mounting portion is formed in which the other surface side of the substrate comes into surface contact and is in thermal contact. I do not care.
- substantially cylindrical means that it includes a polygonal column shape such as a quadrangular column or a pentagonal column, or a truncated cone shape, but is preferably a polygonal column shape or a cylindrical shape greater than an octagonal column.
- the outer peripheral surface portion of the metal cover may have an inclined cross-sectional shape in the diameter direction.
- a plurality of fins may be provided on the outer peripheral surface portion of the metal cover to improve heat dissipation, or a communication hole that can communicate with the inside thereof may be formed.
- the outermost diameter D of the metal cover is 80 to 150 mm, preferably 85 to 100 mm. If it is smaller than these ranges, a sufficient heat radiation area cannot be secured, and if it is larger than these ranges, the metal cover becomes large.
- the substrate may be, for example, a flat plate having one surface on which chip-shaped LEDs are mounted and another surface that can be in thermal contact with the metal cover.
- the number of LEDs mounted in the circumferential direction around the center point of the metal cover may be any number as long as it is two or more. However, in the present invention, more than five LEDs are mounted. Preferred.
- the center of the LED is mounted within the range of (D / 2) / 3 or more from the outermost edge of the metal cover to the center side and (D / 2) / 4 or more from the center of the metal cover to the outer edge side. If it is closer to the center of the metal cover than this range, the distance between the LEDs will be shorter, so the temperature of the LED tends to rise due to the heat effect of each other, and the distance from the outer edge of the metal cover will be longer. As a result, sufficient heat dissipation performance cannot be obtained. Further, if it is on the outer edge side of the metal cover from this range, it is advantageous in terms of heat dissipation, but brightness unevenness as a lamp device is likely to occur due to a decrease in brightness at the center of the metal cover.
- the lighting device may be located anywhere, but is preferably housed in the lamp device.
- a base such as the GX53 type, a reflector for controlling the light of the LED, a light-transmitting cover for covering the LED, and the like may be provided, but this is not an essential configuration of the present invention.
- the lamp device according to the first aspect, further comprising a temperature-sensitive element that senses an internal temperature, and the lighting device is configured so as to correspond to the internal temperature sensed by the temperature-sensitive element. It controls the output to the LED.
- the lamp device further comprising: a temperature-sensitive element that senses an internal temperature, and the lighting device is configured to perform the operation according to the internal temperature sensed by the temperature-sensitive element. It controls the output to the LED.
- the thermal element may be arranged at any position such as the substrate side or the vicinity of the lighting device.
- the lighting device for example, lights the LED with a predetermined output if the internal temperature sensed by the temperature sensing element is lower than a preset reference temperature, and lights the LED with an output lower than the predetermined output if it is higher than the reference temperature.
- a lighting fixture according to a fifth aspect includes the lamp device according to the first aspect.
- a lighting fixture according to a sixth aspect includes the lamp device according to the second aspect.
- the lighting fixture may include a fixture main body, a socket device for mounting the lamp device, and the like.
- the metal cover that is in thermal contact with the substrate on which the chip-like LED is mounted is used.
- the metal cover has an outermost diameter D of 80 to 150 mm and a height.
- An LED is used as a light source in order to make H approximately 5 to 25 mm in a cylindrical shape and 2 ⁇ (D / 2) H / W, which is the area of the outer peripheral surface per total input power W, to be in the range of 200 to 800 mm 2 / W.
- the relationship between an appropriate LED and a metal cover can be defined without increasing the size.
- the metal cover that is in thermal contact with the substrate on which the chip-like LED is mounted is used, and the metal cover is formed into a substantially cylindrical shape having an outermost diameter D of 80 to 150 mm.
- a plurality of LEDs are mounted in the circumferential direction around the center point of the metal cover, and the center of the LED is separated from the outermost edge of the metal cover to the center side by (D / 2) / 3 or more and made of metal
- the LED is mounted as a light source in order to light up the LED mounted on the substrate in the range of (D / 2) / 4 or more away from the center of the cover and within the range of (D / 2) / 4 or more, and the total input power W is in the range of 5-20W
- the size is not increased, and the occurrence of uneven brightness can be suppressed, and an appropriate relationship between the LED and the metal cover can be defined.
- the output to the LED is controlled according to the internal temperature sensed by the temperature sensing element. Can be prevented, and the lifetime of the LED can be extended.
- the output to the LED is controlled according to the internal temperature sensed by the temperature sensing element. Can be prevented, and the lifetime of the LED can be extended.
- FIGS. 5A and 5B show a fifth embodiment, in which FIG. 5A is a cross-sectional view of a process of attaching a lamp device to an instrument body, and FIG.
- 1 to 5 show a first embodiment.
- the lighting fixture includes a fixture main body (not shown) such as a downlight, a socket device 11 attached to the fixture main body, and a flat lamp device 12 attached to the socket device 11. .
- the directional relationship such as the vertical direction is based on the state in which the lamp device 12 is mounted horizontally, with the base side that is one side of the lamp device 12 being the upper side and the light source side that is the other side being the lower side. explain.
- the socket device 11 corresponds to the GX53 type base, and has a cylindrical socket device body 21 made of an insulating synthetic resin, and an insertion hole 22 is formed in the center of the socket device body 21 in the vertical direction. Is formed through.
- a pair of socket portions 24 are formed on the lower surface of the socket device body 21 at symmetrical positions with respect to the center of the socket device body 21. These socket portions 24 are formed with connection holes 25, and a receiving member (not shown) for supplying power to the inside of the connection holes 25 is disposed.
- the connection hole 25 is an arc-shaped long hole that is concentric with the center of the socket device main body 21, and a diameter-expanded portion 26 is formed at one end of the long hole.
- the lamp device 12 includes a base 31 disposed on the upper surface side, a metal cover 32 with the base 31 attached to the upper surface side, and heat on the lower surface side of the metal cover 32.
- Board 33 which is an LED module board that is attached in contact with each other, reflector 34 that is attached to metal cover 32 through board 33, and a translucent cover that is a glove that is attached to cover the lower surface of metal cover 32 35 and a lighting device 36 disposed in the base 31, each of which is formed in a thin shape having a small size in the height direction.
- the base 31 has, for example, a base structure of GX53 type, and includes a base case 38 made of an insulating synthetic resin and a pair of lamp pins 39 protruding from the upper surface of the base case 38.
- the outer diameter of the base 31 is about 70 to 75 mm.
- the base case 38 is a flat disk-shaped (annular) substrate portion 40, a cylindrical protrusion 41 protruding upward from the center of the upper surface of the substrate portion 40, and protruding downward from the periphery of the substrate portion 40.
- the annular fitting portion 42 is integrally formed.
- a pair of attachment bosses 43 for attaching a pair of lamp pins 39 and a plurality of insertion holes 44 are formed in the substrate portion 40.
- the fitting part 42 is fitted into the metal cover 32, and a plurality of screws (not shown) are screwed into the metal cover 32 from the outside of the board part 40 through the insertion holes 44, whereby the base case 38 is made of metal.
- the cover 32 is fixed.
- the pair of lamp pins 39 protrudes from the upper surface of the substrate portion 40 of the base case 38 at a symmetrical position with respect to the center of the lamp device 12.
- a large diameter portion 45 is formed at the tip of the lamp pin 39.
- the large-diameter portion 45 of each lamp pin 39 is inserted from the enlarged-diameter portion 26 of each connection hole 25 of the socket device 11, and the lamp device 12 is rotated at a predetermined angle, for example, about 10 °, whereby the lamp pin 39 is
- the lamp pin 39 moves from the enlarged diameter portion 26 to the connection hole 25, and is electrically connected to a receiver disposed inside the connection hole 25, and the large diameter portion 45 is caught on the edge of the connection hole 25, so that the lamp The device 12 is held by the socket device 11.
- the metal cover 32 is integrally formed in a flat and substantially cylindrical shape with a metal material having excellent thermal conductivity such as aluminum, and an outer peripheral portion 47 having a substantially cylindrical shape is formed.
- a plurality of radiating fins 48 are formed in the upper half of the upper side of the base 47.
- a disc-shaped substrate mounting portion 49 is formed in the middle of the outer peripheral portion 47 in the middle in the vertical direction, and is partitioned by the substrate mounting portion 49 so that the fitting portion 42 of the base case 38 is formed on the upper surface side of the metal cover 32. Is formed, and a light source side space 51 in which the substrate 33 and the reflector 34 are disposed is formed on the lower surface side.
- An attachment hole 49a for screwing the reflector 34 is formed at the center of the substrate attachment portion 49.
- a mounting screw 52 is inserted into the mounting hole 49a from the base case 38 side of the board mounting portion 49, and the mounting screw 52 is screwed to the center of the reflector 34 so that the reflector 34 is fixed to the metal cover 32.
- the substrate 33 positioned by fitting with the inner shape of the reflector 34 is fixed so as to be sandwiched by the reflector 34 and is brought into contact with the substrate attachment portion 49.
- a wiring hole 49b for connecting the substrate 33 and the lighting device 36 with a lead wire is formed in the substrate attaching portion 49.
- the outermost diameter D of the outer peripheral portion 47 of the metal cover 32 is 80 to 150 mm, preferably 85 to 100 mm, and a specific example is about 90 mm.
- the height H of the outer peripheral portion 47 of the metal cover 32 is 5 to 25 mm, preferably 10 to 20 mm, and a specific example is about 17 mm.
- 2 ⁇ (D / 2) H / W which is the area of the outer peripheral surface of the outer peripheral portion 47 per total input power W to the lamp device 12, is in the range of 200 to 800 mm 2 / W.
- the substrate 33 has a substrate body 55 that is flat and made of a metal material having excellent thermal conductivity, such as aluminum, and an insulating layer is formed on the lower surface of the substrate body 55.
- a wiring pattern is formed, and a plurality of chip-like LED elements 56 are electrically and mechanically connected and arranged on the wiring pattern.
- the board body 55 is brought into surface contact with the lower surface of the board mounting portion 49 of the metal cover 32 by being sandwiched between the metal cover 32 and the reflector 34 screwed to the metal cover 32. It is attached so that heat conduction is possible.
- a plurality of LEDs 56 are mounted on the substrate body 55 along the circumferential direction centering on the center point O of the metal cover 32 (FIG. 2 shows six cases, and FIG. 3 shows seven cases, respectively).
- the center of the LED 56 is away from the outermost edge of the metal cover 32 by (D / 2) / 3 or more from the outermost edge and away from the center of the metal cover by (D / 2) / 4 or more by the outer edge.
- the reflector 34 is formed of, for example, a synthetic resin material, and is formed on a reflective surface having a high reflection efficiency such as a mirror surface having a white surface.
- a cylindrical frame portion 58 is formed in the peripheral portion of the reflector 34, and a partition portion 59 for partitioning each LED 56 is formed radially inside the frame portion 58.
- an opening 60 through which the LED 56 is inserted and the light from the LED 56 facing the LED 56 is reflected in a desired direction according to the light distribution.
- a reflecting surface 61 is formed on the inner side of each LED 56 divided by the frame portion 58 and the partition portion 59.
- the reflector 34 is disposed on the lower surface of the metal cover 32 with the substrate 33 interposed therebetween, and the mounting screw 52 is screwed from the upper surface side of the metal cover 32 to the center of the reflector 34 through the mounting hole 49a.
- the metal cover 32 is fastened and fixed. By tightening and fixing the reflector 34 to the metal cover 32, the substrate 33 is sandwiched between the reflector 34 and the metal cover 32, and the substrate 33 is brought into close contact with the substrate mounting portion 49 of the metal cover 32. Yes.
- the translucent cover 35 is made of a transparent resin having translucency or a synthetic resin material having light diffusibility.
- the translucent cover 35 has a disk-shaped front surface portion 63 and a cylindrical side surface portion 64 provided around the front surface portion 63.
- the side surface portion 64 has an outer peripheral portion 47 of the metal cover 32.
- a fitting portion 65 is formed which is fitted inside and fixedly bonded using an adhesive.
- the lighting device 36 includes a circuit board and a plurality of lighting circuit components mounted on the circuit board (not shown), and is disposed inside the protrusion 41 of the base case 38.
- the power input portion of the lighting device 36 and the pair of lamp pins 39 are electrically connected by lead wires (not shown), and the output portion of the lighting device 36 and the substrate 33 are connected by lead wires (not shown) through the wiring holes 49b of the metal cover 32. Electrically connected.
- each lamp pin 39 of the lamp device 12 is inserted into the enlarged diameter portion 26 of each connection hole 25 of the socket device 11 from below. Then, by rotating the lamp device 12 in the mounting direction and moving each lamp pin 39 from each enlarged diameter portion 26 to each connection hole 25, each lamp pin 39 is brought into electrical contact with the receptacle of the socket device 11. At the same time, the large-diameter portion 45 of each lamp pin 39 is hooked on the edge of each connection hole 25, and the lamp device 12 can be attached to the socket device 11.
- the protruding portion 41 of the lamp device 12 is inserted into the insertion hole 22 of the socket device 11. At this time, if the end face of the projecting portion 41 and the metal cover 32 are in close contact with a tool body (not shown) so as to conduct heat, the heat of the lamp device 12 can be released to the tool body.
- the heat generated by the LED 56 is conducted from the substrate 33 to the substrate mounting portion 49 of the metal cover 32 and from the substrate mounting portion 49 to the outer peripheral portion 47.
- the heat conducted to the outer peripheral portion 47 of the metal cover 32 is efficiently radiated from the outer peripheral surface of the outer peripheral portion 47 to the atmosphere.
- the heat dissipating fins 48 are provided in the outer peripheral portion 47, the surface area of the outer peripheral portion is increased as compared with a flat surface, and the heat dissipation efficiency can be improved. If the heat dissipation performance is satisfactory, the outer peripheral portion 47 may be provided with a flat side surface without providing the heat dissipation fins 48.
- a metal cover 32 that is in thermal contact with the substrate 33 on which the LED 56 is mounted is used.
- the metal cover 32 has an outermost diameter D of 80 to 150 mm, and preferably 85 to 100 mm, a height H of 5 to 25 mm, preferably 10 to 20 mm, and a substantially cylindrical shape.
- the area of the outer peripheral surface per total input power W is 2 ⁇ (D / 2) H / W is 200.
- the range is ⁇ 800 mm 2 / W.
- the height H of the metal cover 32 is thinner than 5 mm, a sufficient heat radiation area is not secured on the outer peripheral surface 47 of the metal cover 32, and it becomes difficult to attach and detach, and if it is thicker than 25 mm, the lamp device 12 is thin. It cannot be realized.
- 2 ⁇ (D / 2) H / W which is the area of the outer peripheral surface of the outer peripheral portion 47 of the metal cover 32 per total input power W to the lamp device 12, is 200 mm 2 / W. If smaller, sufficient heat dissipation performance of the metal cover 32 could not be obtained, and the allowable temperature T 0 of the LED 56 was exceeded. On the other hand, if it is larger than 800 mm 2 / W, the outer diameter or height of the lamp device 12 is increased, the lamp device 12 is enlarged, and the appearance evaluation test of the lamp device 12 (in FIG. 5 (a), “Yes” indicates “No” and “No” indicates “No”.
- the lamp device 12 uses a metal cover 32 that is in thermal contact with the substrate 33 on which the LED 56 is mounted.
- the metal cover 32 has an outermost diameter D of 80 to 150 mm, preferably 85 to 100 mm, a height H of 5 to 25 mm, preferably 10 to 20 mm, and a substantially cylindrical shape.
- the area of the outer peripheral surface per total input power W is 2 ⁇ (D / 2) H / W is 200.
- the lamp device 12 uses a metal cover 32 that is in thermal contact with the substrate 33 on which the LED 56 is mounted.
- the metal cover 32 has a substantially cylindrical shape with an outermost diameter D of 80 to 150 mm, and the LED 56 is made of a metal cover.
- a plurality of LEDs are mounted in the circumferential direction around the center point O of 32, and the center of the LED 56 is at least (D / 2) / 3 away from the outermost edge of the metal cover 32 toward the center and from the center of the metal cover 32
- the LED 56 mounted on the substrate 33 is turned on in the range S separated by (D / 2) / 4 or more on the outer edge side and the total input power W is in the range of 5 to 20 W.
- the lamp device 12 is large. It will be shaped.
- the center of the LED 56 is not separated from the outermost edge (D / 2) of the metal cover 32 to the center side by (D / 2) / 3 or more, and is on the outer edge side of the metal cover 32. If it is positioned, it is advantageous in terms of heat dissipation, but the brightness of the central portion of the metal cover 32 is lowered, and uneven brightness as the lamp device 12 is likely to occur, and the uneven brightness evaluation test of the lamp device 12 (FIG. 5 ( In (b), “No” indicates “No” and “No” indicates “No”.
- the distance between the LEDs 56 is not more than (D / 2) / 4 or more from the center O of the metal cover 32 to the outer edge side and is located on the center side of the metal cover 32, the distance between the LEDs 56 is shortened, and the LED 56 is affected by the mutual heat effect. The temperature is likely to rise, and the distance from the outer edge of the metal cover 32 is long, so that the heat radiation performance is lowered and sufficient heat radiation performance cannot be obtained, and the allowable temperature T 0 of the LED 56 is exceeded.
- a metal cover 32 that is in thermal contact with the substrate 33 on which the LED 56 is mounted is used, and the metal cover 32 is formed into a substantially cylindrical shape having an outermost diameter D of 80 to 150 mm.
- a plurality of LEDs are mounted in the circumferential direction around the center point O of the cover 32, and the center of the LED 56 is more than (D / 2) / 3 or more away from the outermost edge of the metal cover 32 toward the center.
- FIG. 6 shows a second embodiment.
- the temperature sensing element 71 is disposed inside the lamp device 12.
- the position of the temperature sensing element 71 is the surface opposite to the surface to which the substrate 33 of the substrate mounting portion 49 of the metal cover 32 is attached.
- the lighting device 36 controls the output to the LED 56 according to the internal temperature sensed by the temperature sensing element 71. That is, if the internal temperature sensed by the temperature sensing element 71 is lower than a preset reference temperature, the LED 56 is turned on with a predetermined output, and if it is higher than the reference temperature, the LED 56 is turned on with an output lower than the predetermined output.
- the internal temperature of the lamp device 12 increases due to an increase in the ambient temperature of the lamp device 12, etc.
- the temperature of the LED 56 can be prevented from rising abnormally beyond the normal range, and the life of the LED 56 can be extended.
- FIG. 7 shows a third embodiment.
- the temperature sensing element 71 is used for control, but the position of the temperature sensing element 71 is within the base 31 where the lighting device 36 is disposed.
- FIG. 8 shows a fourth embodiment.
- the fan 73 is disposed in the base-side space 50 of the metal cover 32, and the metal cover 32 is provided with a plurality of slit-like vent holes 74 through which air is blown by the air blown by the fan 73.
- the fitting portion 42 of the base case 38 is configured to fit into the base-side space 50 of the metal cover 32, the fitting portion 42 also communicates with the vent hole 74 of the metal cover 32.
- a plurality of vent holes are provided.
- the fan 73 exhausts the hot air in the metal cover 32 to the outside from the vent hole 74, takes in the air having a low external temperature into the metal cover 32, and forcibly cools the metal cover 32.
- the heat dissipation performance from the cover 32 can be improved. For this reason, for example, when the lighting fixture is a downlight or the like and heat tends to be trapped in the fixture, if the heat dissipation is reduced from the metal cover 32 by natural convection, the heat dissipation can be ensured by this forced cooling.
- FIG. 9 shows a fifth embodiment.
- the lamp device 12 is a type in which the substrate 33 without the reflector 34 and the translucent cover 35 is exposed.
- Contact portions 81 that come into contact with the appliance side are provided on the upper surface periphery and the lower surface periphery of the metal cover 32.
- the lighting fixture is, for example, a downlight, and includes a fixture main body 82 and a cylindrical reflector (not shown) attached to the fixture main body 82.
- the appliance main body 82 includes a lamp attachment portion 83 to which the lamp device 12 is attached and a reflector plate attachment portion 84 to which the reflector plate is attached.
- the lamp device 12 is attached to the lamp attachment portion 83 so that the contact portion 81 around the upper surface of the metal cover 32 is in contact with the heat conducting portion.
- the reflector mounting portion 84 is divided into a plurality of circumferential directions, and each is provided so as to be openable and closable with respect to the lamp mounting portion 83 by a spring-like hinge 85. Then, as shown in FIG. 9 (a), the lamp device 12 can be attached to the lamp attachment portion 83 by opening the plurality of reflector mounting portions 84 outward, and after the lamp device 12 is attached, As shown in FIG. 9 (b), by closing the plurality of reflector mounting portions 84 to the center side, the plurality of reflector mounting portions 84 can conduct heat to the contact portion 81 on the periphery of the lower surface of the metal cover 32. Further, a metal reflector is attached to the plurality of reflector attachment portions 84.
- the metal cover 32, the metal fixture body 82, and the metal reflector plate of the lamp device 12 are in contact with each other so as to be able to conduct heat, and the heat generated by the lamp device 12 is transferred to the fixture body 82 and the reflector plate. Heat can be transmitted to
- the present invention is used for a lamp device using an LED as a light source and a lighting fixture using the lamp device.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
32 金属製カバー
33 基板
36 点灯装置
56 LED
71 感温素子
Claims (6)
- チップ状のLEDが実装された基板と;
前記LEDを点灯させる点灯装置と;
最外径Dが80~150mm、高さHが5~25mmの略円筒状で、総入力電力Wあたりの外周面の面積である2π(D/2)H/Wが200~800mm2/Wの範囲であり、前記基板が熱的に接触して設けられた金属製カバーと;
を具備していることを特徴とするランプ装置。 - 最外径Dが80~150mmの略円筒状の金属製カバーと;
この金属製カバーに熱的に接触して設けられ、チップ状のLEDが前記金属製カバーの中心点を中心として周方向に複数個実装されているとともに、前記LEDの中心が前記金属製カバーの最外縁から中心側に(D/2)/3以上離れ、かつ前記金属製カバーの中心から外縁側に(D/2)/4以上離れた範囲内に実装された基板と;
総入力電力Wが5~20Wの範囲で、前記基板に実装された前記LEDを点灯させる点灯装置と;
を具備していることを特徴とするランプ装置。 - 内部温度を感知する感温素子を具備し、
前記点灯装置は、前記感温素子が感知する内部温度に応じて前記LEDへの出力を制御する
ことを特徴とする請求項1に記載のランプ装置。 - 内部温度を感知する感温素子を具備し、
前記点灯装置は、前記感温素子が感知する内部温度に応じて前記LEDへの出力を制御する
ことを特徴とする請求項2に記載のランプ装置。 - 請求項1に記載のランプ装置を具備している
ことを特徴とする照明器具。 - 請求項2に記載のランプ装置を具備している
ことを特徴とする照明器具。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020117005579A KR101283776B1 (ko) | 2009-02-19 | 2010-02-19 | 램프 장치 및 조명기구 |
EP10743826.9A EP2325546A4 (en) | 2009-02-19 | 2010-02-19 | LIGHTING DEVICE AND LIGHTING ARMATURE |
US13/063,871 US8899795B2 (en) | 2009-02-19 | 2010-02-19 | Lamp device and lighting fixture including LED as light source and metallic cover |
CN2010800027606A CN102165249B (zh) | 2009-02-19 | 2010-02-19 | 灯装置及照明器具 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2009-037191 | 2009-02-19 | ||
JP2009037191A JP5637344B2 (ja) | 2009-02-19 | 2009-02-19 | ランプ装置および照明器具 |
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WO2010095701A1 true WO2010095701A1 (ja) | 2010-08-26 |
Family
ID=42633980
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2010/052489 WO2010095701A1 (ja) | 2009-02-19 | 2010-02-19 | ランプ装置および照明器具 |
Country Status (7)
Country | Link |
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US (1) | US8899795B2 (ja) |
EP (1) | EP2325546A4 (ja) |
JP (1) | JP5637344B2 (ja) |
KR (1) | KR101283776B1 (ja) |
CN (1) | CN102165249B (ja) |
TW (1) | TW201037223A (ja) |
WO (1) | WO2010095701A1 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
CN102165249B (zh) | 2013-11-06 |
TW201037223A (en) | 2010-10-16 |
US8899795B2 (en) | 2014-12-02 |
US20110291594A1 (en) | 2011-12-01 |
EP2325546A4 (en) | 2013-11-13 |
KR20110052703A (ko) | 2011-05-18 |
KR101283776B1 (ko) | 2013-07-08 |
JP5637344B2 (ja) | 2014-12-10 |
EP2325546A1 (en) | 2011-05-25 |
CN102165249A (zh) | 2011-08-24 |
JP2010192336A (ja) | 2010-09-02 |
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