WO2009154100A1 - 連結体及び当該連結体を備える照明装置 - Google Patents
連結体及び当該連結体を備える照明装置 Download PDFInfo
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- WO2009154100A1 WO2009154100A1 PCT/JP2009/060505 JP2009060505W WO2009154100A1 WO 2009154100 A1 WO2009154100 A1 WO 2009154100A1 JP 2009060505 W JP2009060505 W JP 2009060505W WO 2009154100 A1 WO2009154100 A1 WO 2009154100A1
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- WIPO (PCT)
- Prior art keywords
- heat
- heat radiating
- light source
- light
- screwing
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
- H01R33/945—Holders with built-in electrical component
- H01R33/9453—Holders with built-in electrical component for screw type coupling devices
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- 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
- F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
- F21K9/232—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
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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
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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
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Definitions
- the present invention relates to a coupling body that couples a conductive member such as a heat radiating portion and a power source connection section such as a base, and a lighting device including the coupling body.
- FIG. 20 is a longitudinal sectional view of a conventional LED bulb 201 described in Patent Document 1.
- an LED 202 that is a point light source is attached to a light source attachment portion 203, and heat generated from the LED 202 is transmitted to a metal outer member 204 that is a heat dissipation portion via the light source attachment portion 203. Then, heat is radiated from the outer member 204 to the outside air.
- the LED bulb 201 has a base 206 on the opening end side of the outer member 204 to which a wiring for electrically connecting the lighting circuit 205 housed in the outer member 204 and an external power source is attached.
- the outer member 204 and the base 206 are connected by a connecting member 207 made of a synthetic resin that electrically insulates the outer member 204 and the base 206. JP 2006-313717 A
- the connecting member 207 used in the conventional LED bulb 201 is made of synthetic resin
- the outer member 204 and the base 206 are electrically insulated, but the lighting circuit 205 in the outer member 204 is ignited. Then, there is a problem that the connecting member 207 is melted and deformed by the heat, and in some cases, the connecting member 207 itself is ignited.
- the connecting member 207 depending on the type of synthetic resin used for the connecting member 207, there is a problem that even the heat transmitted to the LED 202 and / or the lighting circuit 205 through the outer member 204 may be deformed. It was.
- the connecting member 207 needs to be connected while securing the electrical insulation between the outer member 204 and the base 206 and to be prevented from being deformed by heat.
- the coupling body of the present invention is a coupling that couples a conductive member such as a heat radiating part that radiates heat generated from a heat source that functions by receiving power supply, and a power connection part that connects to an external power source that supplies power to the heat source.
- the coupling body is electrically insulative in order to electrically insulate the conductive member and the power source connection part, and further has heat resistance in order to prevent deformation due to heat from a heat source. It is characterized by that.
- the coupling body includes a conductive member such as a heat radiating part that radiates heat generated from a heat source that functions by receiving power supply, and a power connection part that is connected to an external power source that supplies power to the heat source. While connecting, ensuring electrical insulation, it can prevent that a connection body deform
- the coupling body of the present invention is a coupling body that couples a conductive member such as a heat radiating section that radiates heat from the light source and / or the drive circuit section and a base for connecting to an external power source that supplies power to the light source.
- the connecting body is electrically insulative to electrically insulate the conductive member from the base, and further has heat resistance to prevent deformation due to heat.
- the connecting body can be connected while ensuring electrical insulation between the conductive member such as the heat radiating portion and the base, and can be prevented from being deformed by heat.
- the connected body of the present invention is further characterized by having nonflammability.
- the connected body itself it is possible to prevent the connected body itself from being ignited by the heat transmitted from the light source module and / or the drive circuit unit which is a heat source.
- the connected body of the present invention is further characterized by comprising porcelain.
- the porcelain has electrical insulation and has a high melting point, so that deformation due to heat can be prevented. Moreover, since the porcelain has high hardness, it is possible to prevent the connected body from being deformed by an external impact.
- the connecting body of the present invention further includes a first screwing structure in which the connecting body and the conductive member are screwed together, and / or a second screwing in which the connecting body and the power supply connection portion or the base are screwed together.
- a structure is provided.
- the present invention has a first screwing structure for screwing the connecting body and the conductive member and / or a second screwing structure for screwing the connecting body and the power supply connection portion or the base. Thereby, each member can be connected easily.
- the connecting body of the present invention is further characterized in that the first screwing structure and / or the second screwing structure is formed by forming a male screw in the connecting body.
- the manufacturability of the coupling body can be improved by forming the male screw in the coupling body with low molding accuracy, the yield can be improved.
- the connected body of the present invention is further characterized in that the convex portion of the male screw has an R shape.
- the convex portion of the male screw provided in the coupling body into an R shape, it can be made difficult to break compared with a square shape.
- the first screw structure and / or the second screw structure may be provided with a seal member in the first screw structure and / or the second screw structure. And screwed together.
- the coupling body and the conductive member such as the heat radiating section and / or the coupling body and the power source connection section such as the base can be sealed and coupled. Further, the locking can be made stronger.
- the connected body of the present invention is further characterized in that a glaze is applied to the connected body.
- unevenness on the surface of the porcelain constituting the coupling body can be smoothed.
- the illuminating device of the present invention is characterized by comprising the above-mentioned connecting body.
- an illumination device that can be connected while ensuring electrical insulation between a conductive member such as a heat radiating portion and a base and that the connected body can be prevented from being deformed by heat. Can do.
- the illumination device of the present invention is further characterized in that the light source is a light emitting diode.
- the light source is a light emitting diode having a large calorific value
- the light source is connected while ensuring electrical insulation between the conductive member such as the heat radiating portion and the base, and the connection body is deformed by heat. It is possible to provide a lighting device that can prevent this.
- Embodiment 1 of the illuminating device of this invention It is a principal part perspective view of Embodiment 1 of the illuminating device of this invention. It is a principal part disassembled perspective view of the illuminating device of FIG. It is a principal part longitudinal half sectional view of the illuminating device of FIG. It is a principal part longitudinal cross-sectional view of the illuminating device of FIG. It is a schematic diagram of the light source module used for the illuminating device of FIG. It is a figure explaining the attachment state of the light source module and reflection part in the light source attachment surface of the illuminating device of FIG. It is a figure explaining the attachment state of the light source module and reflection part in the light source attachment surface of the illuminating device of FIG.
- FIG. 9 is a circuit diagram of the drive circuit unit in FIG. 8. It is a principal part front view of Embodiment 3 of the illuminating device of this invention. It is a figure explaining the thermal radiation part used for the illuminating device of FIG. It is a figure explaining the thermal radiation part used for the illuminating device of FIG. It is a figure explaining the thermal radiation part used for the illuminating device of FIG. It is a figure explaining the thermal radiation part used for the illuminating device of FIG. It is a principal part perspective view which shows the structure of the illuminating device which concerns on Embodiment 4 of this invention.
- a connecting body for connecting a heat radiation portion and a base of the present invention and a lighting device including the connecting body will be described with reference to the drawings.
- an illumination device using an LED as a light source is illustrated, but the light source is not limited to an LED, and may be another semiconductor light emitting element, EL (Electroluminescence), or the like.
- FIG. 1 is a perspective view of a main part of Embodiment 1 of the illumination device of the present invention.
- FIG. 2 is an exploded perspective view of a main part of the illumination device of FIG.
- FIG. 3 is a longitudinal half sectional view of an essential part of the illumination device of FIG.
- FIG. 4 is a longitudinal sectional view of an essential part of the illumination device of FIG.
- the illumination device 1 is an LED bulb using a light source module 2 having a plurality of LEDs (not shown) as a light source, and the light source module 2 has a heat conductive sheet 5 interposed on a light source mounting surface 4 of a heat radiating unit 3. Attached.
- the heat radiating portion 3 is made of a light metal having high thermal conductivity, such as aluminum, and has a substantially cylindrical shape.
- the heat radiating section 3 has a plurality of heat radiating grooves 6 on the outer peripheral surface of the cylinder, and heat transmitted from the light source module 2 to the heat radiating section 3 is transferred from the outer peripheral surface to the outside air using the heat radiating grooves 6. Heat is dissipated.
- the heat radiating part 3 has a cavity 8 formed therein, and has a housing part 8 for housing the drive circuit part 7 for driving the light source module 2.
- the heat radiating part 3 includes a base 10 as a power source connecting part that is fitted in an external socket and electrically connected to a commercial power source on the opening end 9 side of the housing part. A base 10 is connected.
- the drive circuit unit 7 includes a plurality of electronic circuit components 21 such as a protection circuit, a rectifier circuit, and a constant current circuit, and alternating current provided from a commercial power source is converted into a constant current by the drive circuit unit 7.
- the light source module 2 is supplied.
- the heat radiating unit 3 has, on the light source mounting surface 4 side, a light transmissive portion 12 that is a light control member that controls light emitted from the light source module 2 and controls light distribution on the irradiated surface as a cover.
- the light transmitting portion 12 is screwed and locked to the end portion on the light source mounting surface 4 side of the outer peripheral surface 15 of the heat radiating portion 3.
- the translucent part 12 is made of milky white polycarbonate resin.
- the heat radiating section 3 has a plurality of heat radiating grooves 6 parallel to the axial direction of the cylinder (the arrow direction in FIGS. 3 and 4), and forms a linear groove in one direction extending from one end of the cylinder to the other end. is doing. Since the convex portion 13 formed between the plurality of heat radiating grooves 6 is formed into a smooth R shape with the edges removed, the user may be injured by touching the heat radiating portion when replacing the bulb. It is preventing.
- the depth of the heat radiating groove 6 is a surface area (hereinafter referred to as “surface area”) required for ensuring heat radiation for sufficiently radiating heat generated from the light source module 2 and / or the drive circuit unit 7 in which the heat radiating unit 3 is a heat source. It is calculated
- the outer diameter of the cylinder is approximately 68 mm
- the length of the cylinder is approximately 109 mm
- the width of the heat dissipating grooves 6 is approximately 1. 0.5 mm and a depth of about 1.5 mm.
- the size of the light bulb is equivalent to 20 types.
- the heat dissipating area necessary to sufficiently dissipate the heat generated from the light source module 2 will be described later with experimental results.
- the heat radiation groove 6 has a depth of about 1.5 mm, which is very shallow compared to the depth between the heat radiation fins provided in the conventional LED bulb, so that it is difficult for dust to collect in the heat radiation groove 6 and the heat radiation groove 6. Even if dust accumulates, cleaning can be performed easily. Therefore, since the heat radiation part 3 can always be kept clean, it is possible to prevent ignition due to dust and improve the safety of the lighting device. In addition, it has been confirmed by the inventors' experiments that if the depth of the heat radiating groove 6 is approximately 2 mm or less, the cleaning property is good.
- the heat radiating groove 6 is formed so that the bottom portion 14 of the heat radiating groove 6 gradually becomes shallower with respect to the outer peripheral surface 15 of the heat radiating portion, for example, with a corner 28 having an R shape at least at one end. Is preferred. Therefore, even if the dust is very small, it is possible to easily sweep out the dust with a cleaning tool such as a brush using the structure in which the heat radiating groove 6 is gradually shallow.
- the direction in which the heat radiating groove 6 is provided is not limited to the axial direction, but may be a direction along the circumference of the cylinder. Moreover, if the heat radiating groove 6 is provided in one direction, dust can be swept away by moving a cleaning tool such as a brush in one direction, so that the cleaning property is improved.
- the heat radiating portion 3 has a slightly reduced outer diameter with an inclination angle of about 1 ° from the base 10 side toward the light source mounting surface 4 side.
- the light source mounting surface 4, the outer peripheral surface 15, and the heat radiation groove 6 which are the surfaces of the heat radiation portion 3 are painted.
- the paint By applying the paint, the progress of oxidation and corrosion such as rust can be delayed, so that the durability of the lighting device can be enhanced.
- white coating is more preferable. Compared with other colors, the heat dissipation of the heat dissipation part 3 can be enhanced.
- a hollow housing portion 8 having a volume necessary for housing the drive circuit portion 7 is formed inside the heat radiating portion 3.
- the drive circuit unit 7 is held by two columnar spacers 16 so as to maintain a predetermined distance from the bottom surface 17 of the housing unit 8.
- One end of each spacer 16 is connected and fixed to a first locking portion 18 such as a screw provided through the bottom surface 17 of the housing portion 8 and the light source mounting surface 4, and the other end of each spacer 16.
- a first locking portion 18 such as a screw provided through the bottom surface 17 of the housing portion 8 and the light source mounting surface 4, and the other end of each spacer 16.
- a second locking unit 20 such as a screw.
- the drive circuit unit 7 is mechanically fixed to the bottom surface 17 of the housing unit 8 via the spacer 16, and the drive circuit unit 7 even when the lighting device receives an impact from the outside. 7 can be stably held in the accommodating portion 8.
- the drive circuit unit 7 is preferably held in the housing unit 8 so that the electronic circuit component 21 constituting the drive circuit unit 7 is disposed on the base 10 side.
- the spacer 16 has an electrical insulation property such as a synthetic resin such as PBT (polybutylene terephthalate) because it is necessary to ensure electrical insulation between the bottom surface 14 of the heat radiating portion 3 and the drive circuit portion 7.
- a member is used.
- the drive circuit unit 7 is held with the insulating sheet 19 interposed therebetween while maintaining a predetermined distance with respect to the bottom surface 17 of the housing unit 8 of the heat radiation unit 3, the heat radiation unit 3 and the drive circuit unit It is possible to ensure electrical insulation between 7. Furthermore, by providing the insulating sheet 19 on the inner peripheral surface of the accommodating portion 8 so as to surround the drive circuit portion 7, electrical insulation between the heat radiating portion 3 and the drive circuit portion 7 is more reliably performed. .
- FIG. 5 is a schematic diagram of the light source module 2.
- 6A and 6B are diagrams for explaining the mounting state of the light source module 2 and the reflecting portion 23 on the light source mounting surface 4, and FIG. 6A is the light source mounting surface in a state where the light source module 2 and the reflecting portion 23 are not mounted. 6B shows a state of the light source mounting surface 4 in a state where the light source module 2 and the reflection portion 23 are attached (however, the heat radiating portion is omitted).
- the light source module 2 is a pseudo-white light source module in which a plurality of LED chips (not shown) are densely mounted on a substantially rectangular module substrate 24 made of ceramic, and the plurality of LED chips include a phosphor. It is sealed with a sealing resin. Since the phosphor is excited by the blue light emitted from the LED chip and emits yellow light, the light emitted from the light source module 2 is generated by the blue light from the LED chip and the yellow light from the phosphor. It is visually recognized as white.
- two light source module locking holes 26 are provided at the diagonal ends of the rectangular module substrate 24, and the light source module locking holes are formed in the positioning projections 27 provided on the light source mounting surface 4.
- the light source module 2 is positioned on the light source mounting surface 4.
- the heat conductive sheet 5 is arranged between the light source module 2 and the light source mounting surface 4 as described above, the heat from the light source module 2 can be efficiently transmitted to the heat radiating unit 3.
- a pair of electrodes for inputting a constant current supplied from the drive circuit unit 7 is provided at the opposite end of the rectangular module substrate 24 on the side where the light source module locking holes 26 are not provided. Is formed.
- One of the electrodes is a positive electrode 29 and the other is a negative electrode 30.
- a wiring 31 for supplying a current to the light source module 2 is connected to the positive electrode 29 and the negative electrode 30, and the wiring 31 passes through notches 32 on two opposite sides of the rectangular module substrate 24.
- the wiring insertion hole 33 formed in the light source mounting surface 4 of the heat radiating unit 3 is inserted into the driving circuit unit 7.
- a plate-like reflecting portion 23 that holds the light source module 2 pressed from the irradiated side and reflects the light emitted from the light source module 2 and the light irregularly reflected by the light transmitting portion 12 is attached. It is done.
- the reflecting portion 23 has four reflecting portion locking holes 34, and in the two reflecting portion locking holes 34, the light source mounting surface 4 is formed by the first locking portion 18 from the irradiated side.
- the spacer 16, the light source module 2, and the reflecting unit 23 that hold the drive circuit unit 7 can be fixed integrally. Since the reflecting portion 23 also serves to fix the spacer 16 and the light source module 2, a locking member for each individual component such as a screw for fixing the light source module 2 is not required, and the number of components can be reduced.
- a rectangular light extraction window 35 for extracting light from the light source module 2 is provided at a position corresponding to the light source module 2 in the center of the reflection portion 23.
- the light extraction window 35 has a shape corresponding to the light emitting unit 25 of the light source module 2, and a slope is formed around the light extraction window 35, so that light can be effectively reflected.
- the strength of the reflecting portion 23 is ensured by forming a rib shape around the outer periphery of the reflecting portion 23 and the positions corresponding to the reflecting portion locking holes 34 and the positioning convex portions 27 of the light source mounting surface 4.
- the reflection part 23 is a high reflectance (about 95%), and the reflectance is improved by making it white. Moreover, since the light source module 2 which is a heat source is pressed and hold
- the translucent part 12 is a cylindrical cover made of polycarbonate resin.
- the axial length of the cylinder is approximately 30 mm, the thickness is approximately 3 mm, the total light transmittance is approximately 55%, and the dispersion ratio is approximately 60 °. is there.
- the center of the top surface and the inner top surface of the cylinder are slightly inflated by about 0.5 mm and about 1 mm, respectively, and the outer peripheral surface of the light transmitting portion 12 is also about 1 ° in accordance with the reduced diameter of the heat radiating portion 3. The diameter is reduced at an inclination angle of.
- the translucent part 12 is screwed and locked to the end of the heat radiating part 3 on the light source mounting surface 4 side, but a female screw (concave part) is formed on the translucent part 12 side, and on the heat radiating part 3 side.
- a third screwing structure 36 is formed by forming a screw (convex portion).
- the translucent part 12 can be replaced with a plurality of types of translucent parts having different optical characteristics and colors such as light distribution characteristics, so that the user can change the light transmitting part 12 according to the place where the lighting device is attached.
- the versatility as an illuminating device can also be improved by selecting a translucent part.
- the connecting body 11 has an insertion passage (not shown) through which a wiring for electrically connecting the drive circuit section 7 and the base 10 is inserted, and both ends of the connecting body 11 are connected to the housing section 8 of the heat radiating section 3 and the base.
- This is a cylindrical shape consistent with the shape of 10.
- the heat radiating part 3 since the metal is used for the heat radiating part 3 for the purpose of radiating the heat from the heat source, the heat radiating part 3 has conductivity, and the coupling body 11 is electrically connected to a commercial power source.
- connection body 11 of this Embodiment is comprised with the porcelain.
- a synthetic resin for example, plastic has a melting point of about 100 ° C. to 200 ° C.
- the porcelain has a higher thermal conductivity than that of the synthetic resin (for example, about 10 times that of plastic), the connected body can act as a radiator.
- connection body 11 In addition, if it has nonflammability as the connection body 11 without considering heat resistance, even if the drive circuit part 7 in the accommodating part 8 ignites, it can prevent that the connection body 11 itself ignites. Therefore, other materials such as glass other than porcelain and PBT (polybutylene terephthalate) may be used.
- the connecting body 11 has a first screwing structure 37 for screwing and locking with the heat radiating part 3 between the heat radiating part 3 and the base 10, in order to connect the heat radiating part 3 and the base 10.
- a second screwing structure 38 for screwing and locking with the base 10 is provided.
- the first screwing structure 37 is formed at the end of the inner peripheral surface of the housing portion 8 on the opening end side, and is therefore a first connecting body mounting recess 39 that is a screw (recess), and the outer peripheral surface of the connecting body 11. It is comprised from the heat radiating part attachment convex part 40 which is the external thread (convex part) formed in the edge part by the side of the heat radiating part 3.
- FIG. The heat radiation part 3 and the coupling body 11 are screwed and locked by screwing the heat radiation part mounting convex part 40 into the first connection body mounting concave part 39.
- the second screwing structure 38 includes a base attachment convex portion 41 that is a male screw (convex portion) formed at an end portion of the outer peripheral surface of the connection body 11 on the base 10 side, and a connection body on the inner peripheral surface of the base 10. It is comprised from the 2nd coupling body attachment recessed part 42 which is a female screw (concave part) screwed together to the nozzle
- the molding of the heat radiating portion mounting convex portion 40 and the base mounting convex portion 41 on the connecting body 11 has the following characteristics. Preferably it is.
- FIG. 7 is an enlarged front view of a main part of the connection body 11 according to the first embodiment.
- molded in the coupling body 11 is demonstrated.
- heat dissipation corresponding to the screw is made on the connecting body 11 side.
- the part attaching convex part 40 and the base attaching convex part 41 are formed.
- the convex shape of the heat radiating portion mounting convex portion 40 and the base mounting convex portion 41 into an R shape, it is difficult to break compared with a square shape.
- rock of screwing locking can be strengthened by making the height of the convex part of the thermal radiation part attachment convex part 40 and the nozzle
- the thickness of the coupling body 11 is set to about 3 mm or more, and the heat dissipating part mounting convex part 40 and the base mounting convex part 41 are approximately 0.0 mm from the end part of the coupling body 11. It is preferable that it is formed at a distance of 5 mm or more. Furthermore, it is preferable that the heat dissipating part attaching convex part 40 and the base attaching convex part 41 are formed so as to be not more than one round on the outer peripheral surface of the connector 11.
- die 10 has airtightness. It is preferable. Therefore, between the first connecting body mounting concave portion 39 and the heat dissipating portion mounting convex portion 40 constituting the first screwing structure 37 and the second connecting body mounting concave portion 42 and the base constituting the second screwing structure 38. It is preferable that a sealing agent as a sealing member is interposed between the mounting convex portions 41. Therefore, it can be screwed and locked with airtightness.
- a sealing agent it is preferable to use a sealing agent that does not completely adhere, but has a property to adhere and adhere while having elasticity. For example, even if a failure occurs in the drive circuit unit 7 in the housing unit 8 and illumination becomes impossible, the respective components can be disassembled.
- a protective agent such as glaze is applied on the outer peripheral surface of the connecting body 11, particularly in the vicinity of the center of the outer peripheral surface exposed when the heat dissipating part 3, the connecting body 11 and the base 10 are connected.
- a protective agent such as glaze is applied on the outer peripheral surface of the connecting body 11, particularly in the vicinity of the center of the outer peripheral surface exposed when the heat dissipating part 3, the connecting body 11 and the base 10 are connected.
- the heat dissipating part 3, the connecting body 11, the base 10, and the light transmitting part 12 are each screwed and locked, so that they can be easily disassembled. Therefore, even if any of the above-mentioned parts breaks down, the parts can be easily replaced, so that maintainability is improved.
- a light source module having a thickness of 1 mm, on which a plurality of LED chips are mounted and a calorific value is 8.65 ⁇ 10 6 W / m 3 is a heat conduction sheet having a thickness of 1 mm (thermal conductivity 5.0 W / m ⁇ The condition is that the rectangular aluminum substrate is fixed on the front side with K) in between.
- the aluminum substrate has a thermal conductivity of 237 W / m ⁇ K, has a thickness of 1 mm and an area of 112 mm ⁇ 112 mm, and is only air-cooled by the outside air (thermal conductivity 5.8 W / m 2 ⁇ K). It was decided to be done. The air cooling is performed only from the back side of the aluminum substrate.
- a heat dissipation area of 12500 mm 2 for the 20 type illumination device, 25000 mm 2 for the 40 type, and 37500 mm 2 for the 60 type, that is, the back side area of the aluminum substrate is required.
- the area where the heat dissipating part and the housing part perform air cooling in contact with the outside air is 12500 mm 2 in the case of the 20 type, for 40 form in the case of 25000 mm 2, 60 form should be 37500mm 2.
- the housing portion is sealed, for example, in the case of type 20, it is preferred radiating area 60% wider 20000mm about 2 than 12500Mm 2.
- FIG. 8 is a block diagram of the drive circuit unit 52 used in the lighting device of the second embodiment.
- FIG. 9 is a circuit diagram of the drive circuit unit 52 of FIG.
- the illumination device of the second embodiment is different from the illumination device of the first embodiment in that the LED (light source module 2) and the drive circuit unit 52 that are light sources when an overcurrent or the like occurs in the drive circuit unit 52 are provided.
- the protection circuit unit for protection and the dimming circuit unit for dimming the light source module 2 are provided. Since the other configuration of the lighting device is the same as that of the first embodiment, the same reference numerals are given and detailed description thereof is omitted.
- the configuration of the drive circuit unit 52 will be described with reference to FIG.
- the drive circuit unit 52 is electrically connected to a commercial power source through a base 10 and wiring disposed from the base 10, and the commercial power source is first connected to the protection circuit unit 53.
- the protection circuit 53 unit is cut when an overcurrent exceeding the rating flows, and protects the drive circuit unit 52 (particularly the control IC 64) and the light source module 2 (the first power fuse 60 and the second power fuse 61).
- a temperature fuse 62 that protects the drive circuit unit 52 (especially the control IC 64) and the light source module 2 by cutting when the temperature of the atmosphere around the drive circuit unit 52 exceeds a predetermined temperature, and the drive circuit unit 52 ( In particular, it comprises a control IC 64) and a varistor 59 for protecting the light source module 2.
- the output terminal of the protection circuit unit 53 is connected to the filter circuit unit 54.
- the filter circuit unit 54 includes a capacitor C1, a resistor R2, and a choke coil L1.
- the filter circuit unit 54 removes noise included in the alternating current supplied from the commercial power source.
- the output terminal of the filter circuit unit 54 is connected to the rectifier circuit unit 55.
- the rectifier circuit unit 55 is a diode bridge 63 composed of four diodes, and the supplied alternating current is full-wave rectified and output.
- the output terminal of the rectifier circuit unit 55 is connected to the smoothing circuit unit 56.
- the smoothing circuit unit 56 is a smoothing capacitor, and smoothes the current that has been full-wave rectified by the rectifying circuit unit 55 into a direct current.
- a large capacity electrolytic capacitor is used as the smoothing capacitor C2.
- the output terminal of the smoothing circuit unit 56 is connected to the constant current control unit 57.
- the constant current control unit 57 is a control IC, and controls the direct current input from the smoothing circuit unit 56 to supply a constant current to the light source module 2 composed of a plurality of LEDs.
- the constant current control unit 57 includes a transformer as a step-down circuit inside, and steps down to the magnitude of the drive voltage of the light source module 2.
- one output terminal of the constant current control unit 57 is connected to the input terminal of the light source module 2, and the other output terminal of the constant current control unit 57 is connected to the dimming circuit unit 58.
- the dimming circuit unit 58 is a photocoupler and transmits a dimming signal.
- a varistor 59 is connected in parallel to an AC commercial power supply, a first power fuse 60 is connected to one end of the commercial power supply, and a second power fuse 61 and a thermal fuse 62 are connected to the other end.
- a resistor R2 and a capacitor connected in series are connected in parallel to the output end of the protection circuit unit 53, and a choke coil L1 is connected to the output end of the first power fuse 60.
- the diode bridge 63 and the smoothing capacitor C2 are connected in parallel in order, and one end of the smoothing capacitor C2 is connected to a control IC 64 which is a constant current control unit 57.
- One of the output terminals of the control IC 64 is connected to the light source module 2 composed of a plurality of LEDs, and one of the output terminals is connected to the first photocoupler 65 and the second photocoupler 66 that are the dimming circuit unit 58. ing.
- the dimming signal output from the first photocoupler 65 is input to the control IC 64, and the control IC 64 supplies the dimming current to the light source module 2 in accordance with the dimming signal. This is done by supplying. More specifically, a phase control unit (not shown) is provided on the power input side of the drive circuit unit 52, and a power waveform for dimming by performing phase control of AC from a commercial power source by the phase controller unit is shown. Output. Next, the first photocoupler 65 transmits a dimming signal to the control IC 64 in response to the power waveform, and the control IC 64 performs output control (PWM control) according to the dimming signal, The light source module 2 is dimmed.
- PWM control output control
- the light source module 2 since the alternating current supplied from the commercial power source is converted into a constant current and input to the light source module 2, the light source module 2 emits light with a predetermined luminance. Further, by controlling the dimming circuit unit 58, it is possible to switch to a different luminance and emit light. The luminance of the light source module 2 can be changed by inputting a signal for switching light control from the outside to the constant current control unit 57.
- the lighting device has a dimming function, so that the user can freely dimm and control the luminance of the light source according to the place, time and application where the lighting device is installed. It becomes possible.
- the circuit configuration of the drive circuit unit 52 is an example, and the configuration of each circuit unit is not limited.
- the drive circuit unit includes a protection circuit including a power fuse, a thermal fuse, and a varistor.
- the protection circuit including a power fuse, a thermal fuse, and a varistor.
- the lighting device may have only one of the protection circuit unit and the light control circuit unit.
- the lighting device since the lighting device has a dimming function, the lighting device can perform dimming control according to the place and use of the lighting device. An example of dimming control in the case where the livestock is installed indoors will be described.
- the dimming function For example, if the chicken is surprised by the light of the indoor lighting, the number of eggs is reduced. Therefore, by using the dimming function, the light intensity (luminance) of the indoor lighting where the chicken is raised is initially made stronger and brighter so that the chicken gets used to the light. can do. After that, gradually decreasing the intensity (brightness) of the light makes the chicken less accustomed to the light of the light because the chicken is accustomed to the light of the light. Therefore, it is possible to avoid being surprised by the illumination light and reducing the number of eggs, and to realize power saving.
- the lighting intensity can be reduced to save power, and when used by older users, the lighting intensity (luminance) can be increased. It is also possible to make the characters easier to see.
- FIG. 10 is a main part front view of the lighting device 71.
- 11A to 11C are views for explaining the heat radiating portion 72 used in the illumination device 71 of FIG. 10, wherein FIG. 11A is a cross-sectional view of the main part of the heat radiating portion 72, and FIG. FIG. 11C is a perspective view of main parts of the heat dissipating part 72.
- the lighting device 71 of the third embodiment has a heat radiating portion and a light transmitting portion that are different from those of the lighting device of the first embodiment or the second embodiment, and other configurations of the lighting device are the first embodiment or the embodiment. Therefore, the same reference numerals are given and detailed description thereof is omitted.
- the heat radiating portion 72 of the present embodiment has a cylindrical shape including a housing portion 8 that houses the drive circuit portion 7 in the same manner as the heat radiating portion described in the first embodiment, and has a substantially cylindrical outer diameter and length. It is the same size. Further, the number of the heat radiating grooves 73 formed on the outer peripheral surface 75 of the heat radiating portion 72 is 18, and the width and depth of the heat radiating grooves 73 are about 5 mm and about 8 mm, respectively. Therefore, compared with the heat radiating portion described in the first embodiment, the heat radiating groove 73 is deeper but wider.
- the heat radiating groove 73 By widening the width of the heat radiating groove 73, it becomes easy for a cleaning tool such as a brush to reach every corner of the bottom 74 of the heat radiating groove 73, and the effect of the deterioration of the cleaning property due to the depth of the heat radiating groove 73 being increased. Reduced to ensure sufficient cleanability. Therefore, since the heat radiation part 72 can be easily cleaned, the heat radiation part 72 can be kept clean and the safety of the lighting device 71 can be improved.
- a cleaning tool such as a brush
- the number of the heat radiating grooves is reduced as compared with the heat radiating portion of the first embodiment, but the heat radiating grooves are formed inside the heat radiating grooves 73 by increasing the depth and widening the heat radiating grooves. Since the heat dissipating area is widened, the heat dissipating part as a whole can secure a sufficient heat dissipating area to dissipate heat from the light source module 2 and / or the drive circuit part 7.
- the translucent part 76 is different from the translucent part of the first embodiment and is a thin dome-shaped cover, but is not limited to this shape, and is a cylindrical translucent part as in the first embodiment. There may be.
- the user selects the translucent part according to the place where the lighting device is installed.
- versatility as a lighting device can be improved.
- the coupling body is connected to an external power source that supplies power to the heat source, and a conductive member such as a heat radiating unit that radiates heat generated from a heat source that functions as a light source, for example, which functions upon receiving power supply. It is possible to connect the power supply connection portion, which is a base, while being electrically insulated, and to prevent deformation due to heat from the heat source.
- connection body of the light bulb type lighting device has been illustrated and described.
- the present invention is not limited to this, and general light bulbs, spotlights, downlights, and the like used for outdoor illumination are not limited thereto.
- the present invention can also be applied to a lighting device.
- the present invention is not limited to the lighting device, and any electrical device that is connected to an external power source and driven may be used.
- FIG. 12 is a principal part perspective view of this Embodiment 4 which concerns on the illuminating device provided with the heat radiating member of this invention.
- FIG. 13 is a principal part disassembled perspective view of this Embodiment 4 which concerns on the illuminating device provided with the heat radiating member of this invention.
- FIG. 14 is principal part sectional drawing of this Embodiment 4 which concerns on the illuminating device provided with the heat radiating member of this invention.
- FIG. 12 is a principal part perspective view of this Embodiment 4 which concerns on the illuminating device provided with the heat radiating member of this invention.
- FIG. 13 is a principal part disassembled perspective view of this Embodiment 4 which concerns on the illuminating device provided with the heat radiating member of this invention.
- FIG. 14 is principal part sectional drawing of this Embodiment 4 which concerns on the illuminating device provided with the heat radiating member of this invention.
- FIG. 15 is a half cross-sectional view of a main part of the fourth embodiment according to the lighting device including the heat dissipation member of the present invention.
- FIG. 16A is a top view of the main part of the heat dissipation member of the present invention
- FIG. 16B is an enlarged view of the main part of the groove provided in the heat dissipation member of the present invention.
- FIG. 17 is a top view of the main part of the reflector.
- the lighting device will be described using a heat radiating unit in which a heat radiating member and a heat source are combined.
- the illuminating device includes a heat radiating member 103 having a groove 103a and a mounting surface 103d for radiating heat from the LED module 101 as a heat source, the circuit board 104, and the like, and a heat radiating sheet 110 on the mounting surface 103d of the heat radiating member 103.
- the LED module 101 sandwiched via the reflector, the reflector 102 that sandwiches the LED module 101 on the mounting surface 103d, the cover 106 that diffuses the light reflected by the reflector 102, and the heat dissipation member 103.
- the circuit board 104 including the power supply circuit 104 a and the drive circuit 104 b provided as described above, the connecting body 107 screwed to the one end portion 103 A of the heat radiating member 103, and the base 108 screwed to the connecting body 107. .
- the heat dissipating member 103 includes, for example, a disk-shaped mounting surface 103d made of a light metal having high thermal conductivity such as aluminum,
- the outer surface (or outer peripheral surface) of the main body 103g of the heat radiating member has a cylindrical shape (hereinafter referred to as a cylindrical body) 103g extending in the circumferential direction on the edge of the mounting surface 103d.
- a groove 103a for ensuring a heat radiation area is provided in a straight line.
- channel 103a is provided with two or more (many) in parallel with the linear form, ie, the cleaning direction of the thermal radiation member 103.
- the said cleaning direction is a direction which can clean the said groove
- the direction perpendicular to the horizontal plane is the cleaning direction.
- the present invention is not limited to this, and any direction that can be cleaned by moving an existing cleaning tool in a certain direction is acceptable.
- the groove 103a is parallel from one end 103A of the heat radiating member 103 described later to the other end 103B. Alternatively, it may be provided in a vertical direction.
- the groove 103a is provided in a straight line, but may be provided in a certain direction such as a spiral shape, a zigzag shape, a curved shape, or a matrix shape that can improve the cleaning property.
- the area (hereinafter, referred to as a heat dissipation area) required for the heat dissipation member 103 to ensure heat dissipation characteristics for sufficiently dissipating heat generated from the heat source is, for example, power consumption of the lighting device including the heat dissipation member 103 or Depending on the brightness, the amount of heat generation increases as the power consumption or brightness increases, so the required heat dissipation area also increases.
- the heat radiation area is obtained in relation to the number and depth of the grooves 103a according to the heat generation amount.
- the number of grooves 103 a is 90
- the depth is approximately 1.5 mm
- the groove width is approximately. It is 1.5 mm, and it is possible to secure a heat dissipation area of 200000 mm 2 or more.
- the groove 103a provided on the outer surface of the heat radiating member 103 is provided as shallow as 1.5 mm as described above, if the groove 103a is clogged with dust or dirt, it can be easily and reliably used with an existing cleaning tool. , And can also be cleaned in a short time.
- the depth of the groove 103a is not limited to about 1.5 mm, and that the cleaning property can be improved if the depth is 2 mm or less.
- the said existing cleaning tool points out the cleaning tool generally used.
- channel 103a has the smooth R shape from which the edge was removed, as shown to FIG. 16B.
- the present invention is not limited to this, and the convex portion 103h formed between the plurality of grooves 103a may have a shape that is not sharp. Therefore, a shape that does not injure carelessly even if the user touches the heat radiating member 103 by replacing the lighting device or the like is provided.
- the corner portion 103b of the groove 103a provided on the outer surface of the heat radiating member 103 is provided so that the depth of the corner portion 103b gradually decreases from the bottom surface 103c toward the base 108 as shown in FIG. ing. That is, by forming the corner portion 103b to have, for example, a taper shape or an R shape, it becomes easy to apply an existing cleaning tool to the groove 103a having the corner portion 103b at the beginning of sweeping, so that no sweep residue is created. It is possible to remove dust and dust. Therefore, as described above, the cleaning performance can be improved by providing the corner portion 103b having the R shape.
- the corner 103b is provided at one end 103A of the heat radiating member 103, but is preferably provided also at the other end 103B having the placement surface 103d in order to further improve the cleanability. . Therefore, when the other end 103B is provided, the corner 103b is provided so that the shape of the corner 103b gradually becomes shallower from the bottom surface 103c toward the cover 106, which will be described later. It is possible to remove dust and dirt without making a sweep residue at the corner 103b, which is the end of the sweep when the device is mounted.
- the grooves 103a provided on the outer surface of the heat radiation member 103 are shallow and a plurality of grooves 103a are provided in the cleaning direction, so that they can be easily cleaned and are optimal for maintenance.
- the corner 103b of the groove 103a is provided so as to have an R shape from the bottom surface 103c toward the base 108, so that an existing cleaning portion can be applied to the groove 103a. Furthermore, if it has an R shape from the bottom surface 103 c toward the cover 106, it is possible to improve the cleaning performance without making the corner 103 b uncleaned.
- channel 103a has over the whole outer surface of the thermal radiation member 103, you may have it partially. At least, if the groove 103a is provided around the heat source, a heat radiation area is secured in the vicinity of the heat source, so that heat can be efficiently radiated into the outside air.
- the groove 103a is partially provided in the vicinity of the heat source, since the heat dissipating member 103 has corner portions 103b that are both ends of the groove 103a, both the corner portions 103b are formed in an R shape or a tapered shape. Therefore, it is possible to improve the cleanability without leaving any unswept corner 103b.
- the heat radiating member 103 having the cylindrical body is formed such that the outer surface is slightly reduced in diameter (or inclined gradient) at an inclination angle of about 1 ° from the one end portion 103A to the other end portion 103B. Therefore, when manufactured by mold processing, the process of pulling out from the mold is facilitated, so that it is possible to manufacture a large amount of highly accurate heat radiating members 3 in a short time.
- the heat radiation member 103 has a hollow cylindrical body because the mounting surface 103d has a disk shape, but may have a hollow polygonal shape such as a hollow triangular shape or a hollow rectangular shape.
- the shape of the mounting surface 103d is not limited to a disk shape, and may include a mounting surface 103d having a shape different from the outer shape of the heat dissipation member 103, for example. That is, the mounting surface 103d provided on the heat radiating member 103 having a hollow polygonal shape may be disk-shaped.
- the one end portion 103A of the heat dissipating member 103 is provided with a screwed shape for screwing with a connecting body 107 described later.
- the other end 103B has a mounting surface 103d.
- the outer peripheral portion 103e of the mounting surface 103d is slightly smaller than the outer shape of the heat dissipation member 103.
- the outer peripheral portion 103e includes a cover 106 described later.
- a screwing shape for screwing is provided. Therefore, since it can screw together without using fasteners, such as a screw, the number of parts is reduced. In addition, cost can be reduced.
- the mounting surface 103d of the heat radiating member 103 has a through hole for fastening with screws or the like at least at two locations corresponding to the through hole 102b provided in the reflector 102 that sandwiches the LED module 101 on the mounting surface 103d.
- 103f is provided, and the reflector 102 and the mounting surface 103d can be coupled with the same screw 113a. Therefore, the number of parts can be reduced, and the cost can be reduced.
- the first insulating sheet 111 is attached to the inner surface or inner peripheral surface of the heat dissipation member 103.
- the LED module 101 is a pseudo white LED module 101 in which a plurality of LED chips 101c (small chips) are mounted on a rectangular ceramic substrate 101a as shown in FIGS.
- the plurality of LED chips 101c are sealed with a resin containing a phosphor.
- the phosphor is excited by the blue light emitted from the LED chip 101c and emits yellow light. Therefore, the light emitted from the LED module 101 includes the blue light from the LED chip 101c and the yellow light from the phosphor. It is visually recognized as white by light.
- the LED module 101 is sandwiched through the heat radiation sheet 110 at the center of the mounting surface 103 d of the heat radiation member 103.
- two LED module locking holes 101d are provided at the diagonal ends of the rectangular ceramic substrate 101a, and the LED module engagement is provided on the positioning projection 103i provided on the mounting surface 103d of the heat dissipation member 103.
- the LED module 101 is positioned on the placement surface 103d.
- the LED module 101 since the LED module 101 is sandwiched between the mounting surfaces 103d via the heat dissipation sheet 110, the heat generated from the LED module 101 can be transferred to the heat dissipation member 103, and the temperature of the LED module 101 increases. Can be suppressed. Therefore, the LED module 101 can prevent disconnection due to heat generation and provide the LED module 101 having a long life.
- the reflecting plate 102 reflects the diffused light emitted from the LED module 101, as shown in FIGS. 13, 14, and 17, and is a high plate formed of a polycarbonate resin, for example. It is formed using a reflective material.
- the reflector 102 holds the LED module 101, which is a heat source, sandwiched between the mounting surfaces 103d. Therefore, if a flame-retardant material is used, a safer lighting device can be provided. .
- the reflection plate 102 includes an extraction window 102a for extracting light from the LED module 101, and further includes protrusions 102c that sandwich the LED module 101 on the mounting surface 103d at two corners of the extraction window 102a. Therefore, when the LED module 101 is sandwiched and held on the placement surface 103d by the reflection plate 102, the LED module 101 and the reflection plate 102 can be attached to the placement surface 103d without having a thickness.
- the reflector 102 is tightened with screws or the like at least at two locations corresponding to the through holes 103f provided on the mounting surface 103d on the diagonal of the extraction window 102a (excluding the inside of the extraction window 102a).
- a wearing through hole 102b is provided. Therefore, when the LED module 101 is sandwiched and held on the mounting surface 103d by the reflecting plate 102, it can be attached with the same screw 113a as the through hole 103f provided on the mounting surface 103d. This leads to reduction, and cost reduction is possible.
- the cover 106 is made of milky white polycarbonate resin having excellent heat resistance, and has light transmittance and light diffusibility.
- the cover 106 has a cylindrical shape, and the axial length of the cylinder is approximately 30 mm, the thickness is approximately 3 mm, the total light transmittance is approximately 55%, and the dispersion rate is approximately 60 °. Further, since the heat dissipation member 103 is screwed, the outer surface of the cover 106 is also reduced in diameter by an inclination angle of about 1 ° in accordance with the reduced diameter of the heat dissipation member 103.
- one of the covers 106 has a top surface 106a, and the top surface 106a and the inner top surface 106b are formed by expanding the central portion. Therefore, it can be slightly rounded and has a shape along the heat radiating member 103, so that the appearance of the cover 106 and the lighting device can be improved. In addition, since the shape is greatly different from the conventional lighting device having a rounded shape, a novel image can be given to the user.
- the other side of the cover 106 has a shape for screwing with a screwing shape provided on the outer peripheral portion 103 e of the heat radiating member 103. Since the inner diameter of the cover 106 is slightly larger than the outer diameter of the outer peripheral portion 103e, the cover 106 is inserted outside the outer peripheral portion 103e and screwed through a sealing material. Therefore, it is possible to screw together without touching the heat radiating member 103.
- the said cover 106 has a cylindrical shape, it is not limited to this, For example, you may provide the shape which has a dome shape or a hemispherical shape.
- the circuit board 104 includes a power supply circuit 104a and a drive circuit 104b.
- the circuit board 104 is provided inside the cylindrical heat dissipation member 103. Therefore, since the circuit board 104 can be accommodated in the heat dissipation member 103, the lighting device can be reduced in size.
- the first insulating sheet 121 is provided on the inner surface of the heat radiating member 103, the heat generated from the circuit board 104 is directly transmitted to the heat radiating member 103 without giving an electric influence to the heat radiating member 103. Then, it is discharged into the outside air through the groove 103a provided on the outer surface. Therefore, the heat dissipation characteristics can be improved.
- the second insulating sheet 122 is attached to the circuit board 104.
- the circuit board 104 is inserted from the one end 103 ⁇ / b> A side of the heat radiating member 103 and is installed in the heat radiating member 103.
- the circuit board 104 includes a light control unit that changes the brightness of the lighting device, and includes a temperature fuse that protects the drive circuit 104b and a current fuse that detects and protects the current value of the power supply circuit 104a. Is preferred. Therefore, when a current exceeding the rated value flows due to abnormality, the current fuse detects the current, and the temperature fuse detects the temperature, so that the power supply circuit 104a and the drive circuit 104b are disconnected due to melting.
- the LED module 101 and the circuit board 104 can be prevented from deteriorating. In addition, energy can be saved because the amount of light can be adjusted according to the location and application.
- a safe lighting device can be provided by providing the temperature fuse and the current fuse.
- the circuit board 104 is held via two spacers 105 that hold a predetermined distance from the mounting surface 103d, so that heat can be radiated between the heat sources. It is possible to secure the optimum distance, prevent heat from being trapped inside the heat radiating member 103, and reduce the cause of failure due to heat.
- the spacer 105 is a rod-shaped member formed of a flame-retardant plastic such as polybutylene terephthalate (PBT) or an insulating material such as porcelain. Further, one end of each spacer 105 is held by the same screw 113a by the mounting surface 103d and through holes 103f and 102b provided in the reflection plate 102, and the other end of each spacer 105 is provided in the circuit board 104. It is connected and held in the through hole 104b. Therefore, the spacer 105 can be held in a state in which a predetermined interval is secured between the heat sources without being electrically influenced by the circuit board 104.
- PBT polybutylene terephthalate
- the predetermined interval is an internal space in which heat generated from the LED module 101 placed on the placement surface 103d of the heat radiating member 103 and heat generated from the circuit board 104 can be sufficiently convected.
- 111 is a distance at which 111 can be secured. Therefore, an internal space 111 secured by the drive circuit 104 b and the spacer 105 is formed inside the heat dissipation member 103.
- the mounting surface 103d and the circuit board 104 are held using at least two spacers 105.
- the mounting surface When the LED module 101 is attached to the mounting surface 103d, the mounting surface When the LED module 101 is mounted in the circumferential direction 103d, through holes 102b and 103f are provided in the center of the reflector 102 and the mounting surface 103d with the same screw 113a, and a single spacer 105 is used.
- the mounting surface 103d and the circuit board 104 may be held.
- the connecting body 107 connects the heat radiating member 103 and a base 108 to be described later, has a funnel shape, and is made of non-combustible material such as porcelain, glass, or PBT. Has been.
- the heat dissipating member 103 has conductivity because a metal is used for the purpose of dissipating heat from the heat source. Therefore, the coupling body 107 needs to have electrical insulation between the base 108 electrically connected to the commercial power source and the heat radiating member 103 which is a conductive member. Further, the connecting body 107 has heat resistance to prevent it from being deformed by melting or the like due to heat transferred from a heat source. Therefore, the coupling body 107 in this Embodiment is comprised with the porcelain. Also, porcelain is a non-combustible material compared to plastic, so it is less likely to catch fire, ensuring safety.
- the both ends of the funnel-shaped connecting body 107 have a screwed shape, one screwed with one end 103A of the heat radiating member 103 and the other screwed with a base 108 described later. Since the inner diameter of the side to be screwed with the heat radiating member 103 is slightly smaller than the outer diameter of the heat radiating member 103, the inner diameter is inserted into the heat radiating member 103 and screwed through a sealing material. Since the inner diameter of the side to be screwed with the base 108 described later is slightly smaller than the outer diameter of the base 108 described later, it is inserted inside the base 108 and screwed through a sealing material.
- the base 108 has a cavity inside, one is open and the other has a bottom.
- One of the caps 108 has a screwed shape for screwing with the connecting body 107.
- the other has a threaded shape for screwing with the light bulb socket.
- the other side of the base 108 serves as a single-pole terminal, and the other-pole terminal protrudes from the bottom surface so as to be insulated from the single-pole terminal.
- the other electrode terminal and the one electrode terminal are electrically connected to the circuit board 4 via lead wires.
- the lighting device according to the fourth embodiment When the lighting device according to the fourth embodiment is used by being screwed into an existing light bulb socket provided in a direction perpendicular to a horizontal surface such as a ceiling, the high temperature LED module 101 is positioned below the low temperature base 108. Therefore, it is possible to induce the convection of the outside air along the groove 103a provided perpendicular to the horizontal plane.
- the embodiment in which the LED is used as the light source has been described as an example.
- the present invention is not limited to this, and other semiconductor elements, EL (Electroluminescence), and the like.
- the light source may be used.
- the cover 106 and the outer peripheral portion 103e (the other end portion 103B) of the heat radiating member 103, the heat radiating member 103 and the connecting body 107, and the connecting body 107 and the base 108 are screwed through the sealing material, Even when the liquid is used for cleaning, waterproofness is ensured. Therefore, it is possible to prevent the liquid from entering the heat radiating member 103 and eliminate the cause of the failure.
- the shape is not limited to a screwed shape, and any shape that can be connected without using a fastener such as a screw may be used.
- a locking portion such as a convex portion or a concave portion may be provided.
- the LED module 101 having a thickness of 1 mm, on which a plurality of LED chips 101c are mounted and the calorific value is 8.65 ⁇ 10 6 W / m 3
- the heat dissipation sheet 10 having a thickness of 1 mm (thermal conductivity 5.0 W / m).
- m ⁇ K) is used as a condition when the rectangular aluminum substrate is fixed to the front side.
- the aluminum substrate has a thermal conductivity of 237 W / m ⁇ K, has a thickness of 1 mm and an area of 112 mm ⁇ 112 mm, and is only air-cooled by outside air (thermal conductivity 5.8 W / m 2 ⁇ K). It was decided to be done. The air cooling is performed only from the back side of the aluminum substrate.
- FIG. 18 is a principal part front view of Embodiment 5 which concerns on the illuminating device provided with the heat radiating member of this invention.
- 19A is a cross-sectional view of main parts taken along line XX ′ of the heat dissipating member in FIG. 18,
- FIG. 19B is a front view of main parts according to the fifth embodiment of the heat dissipating member of the present invention, and
- FIG. 10 is a perspective view of main parts according to the fifth embodiment of the heat dissipation member of the present invention.
- the illumination device of the fifth embodiment has a heat radiating member 153 that is different from that of the illumination device of the fourth embodiment, and the other components of the illumination device are the same as those of the fourth embodiment, so the same reference numerals are given. Detailed description thereof will be omitted.
- the heat dissipation member 153 of the present embodiment has a cylindrical body so that the circuit board 104 can be installed inside.
- the outer diameter and length are substantially the same.
- the number of grooves 153a provided on the outer surface of the heat dissipation member 153 is 18, the width of the grooves is approximately 5 mm, and the depth is approximately 8 mm. Therefore, the groove 153a is deeper and wider than the heat dissipation member 103 described in the fourth embodiment.
- the heat dissipation members 103 and 153 have a hollow shape, and the circuit board 104 and the internal space 111 are accommodated therein.
- the shape is not limited to the hollow shape, and the present invention can be applied to a wide variety of light sources and heat dissipation mechanisms.
- the illuminating device has been described using the heat radiating unit combining the heat radiating members 103 and 153 and the heat source as described above, it can be applied to a wide variety of other uses such as a drain pipe for flowing hot water or a combustion cylinder of a burner. .
- the groove is shallowly provided to improve the cleaning property, so that the existing cleaning is performed. It is possible to clean easily and in a short time using a tool.
- channel provided in the heat radiating member is provided in the outer surface of a heat radiating member in a fixed direction, By moving the existing cleaning tool in a fixed direction, it is in the outer surface of a heat radiating member. It is possible to easily remove the adhering dust and dust.
- the groove provided in the heat dissipation member is provided in a straight line on the outer surface of the heat dissipation member, so that accumulated dust and dust can be easily removed with an existing cleaning tool. It is possible and can be cleaned in a short time.
- the grooves provided in the heat radiating member are provided in parallel or perpendicular to the cleaning direction of the heat radiating member, so that accumulated dust and dust can be easily removed with an existing cleaning tool. It is possible to perform cleaning in a short time.
- the groove provided in the heat radiating member has at least one end on the outer surface of the heat radiating member, and the depth of the groove at one end is accumulated by gradually becoming shallower to sweep out dust.
- dust or dust is swept away with an existing cleaning tool, it is possible to apply the cleaning tool to the corner of the groove.
- the grooves provided in the heat radiating member are provided at least around the heat source, so that a heat radiating area can be secured around the heat source. It is possible to dissipate heat into the outside air.
- the heat radiating member main body has a cylindrical shape
- a heat source or the like can be mounted inside the cylindrical shape.
- the entire apparatus can be downsized.
- the main body of the heat radiating member is reduced in diameter from one end portion of the cylindrical shape toward the other end portion. Therefore, die processing is possible and mass production can be easily performed.
- the heat dissipation member can be provided with durability by being coated on the outer surface. If the heat dissipation member is painted in white, the heat dissipation member is transferred to the outside air. It is possible to improve the heat dissipation characteristics.
- Embodiment 4 since a heat radiating unit and an illuminating device are equipped with the said heat radiating member, since the heat radiating member with a shallow groove
Abstract
Description
図20に示したのは、特許文献1に記載されている従来のLED電球201の縦断面図である。当該LED電球201は、点状光源であるLED202が光源取り付け部203に取り付けられており、LED202から発せられた熱は、光源取り付け部203を介して放熱部である金属製の外郭部材204に伝達され、当該外郭部材204から外気に放熱される。
また、連結部材207に用いられる合成樹脂の種類によっては、LED202および/または点灯回路205から外郭部材204を介して伝達される程度の大きさの熱であっても変形してしまうという問題があった。特にLED等の半導体発光素子は発熱が大きいので、外郭部材204に伝達される熱も大きくなり、外郭部材204に接している連結部材207が変形する可能性が高くなる。従って、連結部材207は、外郭部材204と口金206との電気的な絶縁性を確保しながら連結するとともに、熱によって変形することを防止する必要があった。
2 光源モジュール
3 放熱部
6 放熱溝
7 駆動回路部
8 収容部
10 口金
11 連結体
12 透光部
23 反射部
36 第3の螺合構造
37 第1の螺合構造
38 第2の螺合構造
39 第1の連結体取り付け凹部
40 放熱部取り付け凸部
41 口金取り付け凸部
42 第2の連結体取り付け凹部
図1は、本発明の照明装置の実施の形態1の要部斜視図である。図2は、図1の照明装置の要部分解斜視図である。図3は、図1の照明装置の要部縦半断面図である。図4は、図1の照明装置の要部縦断面図である。
放熱部3の内部は、図3及び図4に示すように、駆動回路部7を収容するのに必要な容積を有する空洞の収容部8が形成されている。駆動回路部7は、2本の柱状のスペーサー16によって、収容部8の底面17から所定の距離を保つように保持されている。各スペーサー16の一端は、収容部8の底面17と光源取り付け面4を貫通して設けられたネジ等の第1の係止部18に連結されて固定されており、各スペーサー16の他端は、駆動回路部7の基板に絶縁シート19を介装してネジ等の第2の係止部20に連結されて固定されている。
次に、本発明の実施の形態2の照明装置について説明する。図8は、実施の形態2の照明装置に用いられる駆動回路部52のブロック図である。図9は、図8の駆動回路部52の回路図である。実施の形態2の照明装置が、実施の形態1の照明装置と異なるのは、駆動回路部52内で過電流等が発生した場合に光源であるLED(光源モジュール2)と駆動回路部52を保護する保護回路部と、光源モジュール2を調光する調光回路部を備えることである。照明装置の他の構成については実施の形態1と同一であるので、同一の符号を付して詳細な説明は省略する。
次に、本発明の実施の形態3の照明装置71について説明する。図10は、照明装置71の要部正面図である。図11A~図11Cは、図10の照明装置71に用いられる放熱部72を説明するための図であって、図11Aは放熱部72の要部横断面図であり、図11Bは放熱部72の要部正面図であり、図11Cは放熱部72の要部斜視図である。実施の形態3の照明装置71は、実施の形態1または実施の形態2の照明装置と異なる放熱部及び透光部を有しており、照明装置の他の構成については実施の形態1または実施の形態2と同一であるので、同一の符号を付して詳細な説明は省略する。
熱源からの熱を放熱するための溝に塵や埃が付着した際に、容易かつ確実に清掃可能な放熱部材、放熱部材を備えた放熱ユニット及び放熱部材を備えた照明装置を提供することもできる。
以下、実施の形態5を図18、図19A~図19Cに基づいて説明する。図18は、本発明の放熱部材を備えた照明装置に係る実施の形態5の要部正面図である。図19Aは、図18における放熱部材のX-X’線での要部断面図であり、図19Bは、本発明の放熱部材の本実施の形態5係る要部正面図であり、図19Cは、本発明の放熱部材の本実施の形態5に係る要部斜視図である。
Claims (11)
- 電源の供給を受けて機能する熱源からの発熱を放熱する放熱部等の導電部材と、前記熱源に電源を供給する外部電源に接続する電源接続部とを連結する連結体であって、
当該連結体は、前記導電部材と前記電源接続部を電気的に絶縁するために電気的絶縁性を有し、さらに熱源からの熱による変形を防止するために耐熱性を有することを特徴とする連結体。 - 光源および/または駆動回路部からの発熱を放熱する放熱部等の導電部材と、前記光源に電源を供給する外部電源に接続するための口金を連結する連結体であって、
当該連結体は前記導電部材と前記口金を電気的に絶縁するために電気的絶縁性を有し、さらに熱による変形を防止するために耐熱性を有することを特徴とする連結体。 - 前記連結体は不燃性を有することを特徴とする請求項1または請求項2の何れかに記載の連結体。
- 前記連結体は磁器からなることを特徴とする請求項1から請求項3の何れか一つに記載の連結体。
- 前記連結体と前記導電部材を螺合する第1の螺合構造、および/または前記連結体と前記電源接続部または前記口金を螺合する第2の螺合構造を備えることを特徴とする請求項1から請求項4の何れか一つに記載の連結体。
- 前記第1の螺合構造および/または前記第2の螺合構造は、前記連結体においておねじが形成されてなることを特徴とする請求項5に記載の連結体。
- 前記おねじの凸部はR形状であることを特徴とする請求項6に記載の連結体。
- 前記第1の螺合構造および/または前記第2の螺合構造は、前記第1の螺合構造および/または前記第2の螺合構造にシール部材が設けられて螺合されてなることを特徴とする請求項5から請求項7の何れか一つに記載の連結体。
- 前記連結体に釉薬が塗布されてなることを特徴とする請求項1から請求項8の何れか一つに記載の連結体。
- 請求項1から請求項9の何れか一つに記載の連結体を備えることを特徴とする照明装置。
- 前記光源は発光ダイオードであることを特徴とする請求項10に記載の照明装置。
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KR1020117001360A KR101304749B1 (ko) | 2008-06-20 | 2009-06-09 | 연결체 및 당해 연결체를 구비하는 조명 장치 |
CN2009801229208A CN102066838A (zh) | 2008-06-20 | 2009-06-09 | 连接件和具有该连接件的照明装置 |
EP09766548A EP2309177A4 (en) | 2008-06-20 | 2009-06-09 | CONNECTOR AND LIGHTING DEVICE COMPRISING THE CONNECTOR |
US13/000,283 US20110104935A1 (en) | 2008-06-20 | 2009-06-09 | Connector and illuminating device equipped with the connector |
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JP2008162326A JP5451990B2 (ja) | 2008-06-20 | 2008-06-20 | 照明装置 |
JP2008-162326 | 2008-06-20 | ||
JP2008162325A JP2010003579A (ja) | 2008-06-20 | 2008-06-20 | 放熱部材、放熱ユニット及び照明装置 |
JP2008-162325 | 2008-06-20 |
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EP (1) | EP2309177A4 (ja) |
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US20110104935A1 (en) | 2011-05-05 |
KR20110031474A (ko) | 2011-03-28 |
CN102066838A (zh) | 2011-05-18 |
KR101304749B1 (ko) | 2013-09-05 |
EP2309177A4 (en) | 2012-07-25 |
EP2309177A1 (en) | 2011-04-13 |
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