WO2015122340A1 - Led lamp and illumination apparatus using same - Google Patents

Led lamp and illumination apparatus using same Download PDF

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Publication number
WO2015122340A1
WO2015122340A1 PCT/JP2015/053196 JP2015053196W WO2015122340A1 WO 2015122340 A1 WO2015122340 A1 WO 2015122340A1 JP 2015053196 W JP2015053196 W JP 2015053196W WO 2015122340 A1 WO2015122340 A1 WO 2015122340A1
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WO
WIPO (PCT)
Prior art keywords
led
led lamp
cooling
cooling fan
hole
Prior art date
Application number
PCT/JP2015/053196
Other languages
French (fr)
Japanese (ja)
Inventor
匠史郎 杉尾
晃三 丸田
Original Assignee
岩崎電気株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2014027154A external-priority patent/JP5794440B2/en
Priority claimed from JP2014038253A external-priority patent/JP5910893B2/en
Application filed by 岩崎電気株式会社 filed Critical 岩崎電気株式会社
Publication of WO2015122340A1 publication Critical patent/WO2015122340A1/en

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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
    • F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
    • F21V29/67—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans
    • F21V29/673—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans the fans being used for intake
    • 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

Definitions

  • the present invention relates to a lighting fixture using an LED lamp, and more particularly, to an LED lamp equipped with a cooling fan and a lighting fixture using the same.
  • LED lamps using light emitting diodes are widely used.
  • the LED lamp has an advantage of having a high luminous efficiency as compared with the discharge lamp, but has a disadvantage that the luminous efficiency is lowered when the LED is heated to a high temperature. Therefore, various measures have been taken to prevent the LED from becoming hot. For example, a cooling fan for cooling the LED is provided.
  • Patent Document 1 discloses an LED lamp in which an LED element and a gas flow acceleration fan are provided in a sealed outer sphere.
  • Patent Document 2 describes an LED lighting device provided with an air control unit as means for improving the reliability of a cooling fan.
  • relatively high-temperature air may be supplied to the cooling fan due to the structure around the LED lamp.
  • An object of the present invention is to provide an LED lamp capable of high power and high output and a lighting fixture using the same by preventing the performance of the cooling fan from being lowered and at the same time enhancing the cooling effect of the cooling fan.
  • an LED lamp includes a columnar LED support having a through-hole formed along an axial direction, an LED mounted on a side surface of the LED support, and a first LED support.
  • a cooling fan provided on one end side, a base provided on a second end side of the LED support, and a second end of the LED support formed between the base and the base
  • a cooled air outlet chamber Cooling air from the cooling fan enters the through hole from the first opening of the through hole, exits from the second opening of the through hole, and is guided to the outside through the cooling air outlet chamber. It is configured as follows.
  • a heat dissipation fin may be provided in the through hole of the LED support.
  • the cooling air outlet chamber is provided with an air flow dispersion member that disperses the cooling air exiting from the second opening of the through hole outward in the radial direction. It's okay.
  • the second end portion of the LED support body is a flange portion that guides cooling air from the second opening of the through hole outward in the radial direction. May be provided.
  • a partition member formed of a heat insulating material may be provided between the cooling fan and the first end of the LED support.
  • the cooling fan in the LED lamp, may be supported by a housing, and the housing may be attached to the partition member.
  • a support may be provided between the second end of the LED support and the base, and the cooling air outlet chamber may be formed by the support.
  • the LED lighting fixture is: An LED lamp having an LED, a cooling fan and a base; A reflector that forms a reflective space; A socket provided with a socket to which the base of the LED lamp is mounted, and a socket housing portion for housing the socket; Have The reflecting mirror has a hole for connecting the reflecting space and the socket housing portion; The LED lamp is disposed through the hole of the reflecting mirror so that the LED and the cooling fan are disposed in the reflection space, and the base is disposed in the socket housing portion. The cooling air generated by the cooling fan in the LED lamp flows toward the base, and the air discharged from the LED lamp is guided to the socket housing portion.
  • the socket may function as a heat sink, and air discharged from the LED lamp may be configured to contact the socket.
  • an air passage is formed between the housing and the reflecting mirror, one end of the air passage is connected to the socket housing portion, and the other end of the air passage is provided.
  • the end portion is connected to the reflection space, and a closed loop air circulation path may be constituted by the air passage and the reflection space.
  • the lower surface of the housing has an opening
  • the lower surface of the reflecting mirror has an opening
  • the reflecting mirror is located inside the housing and is more predetermined than the housing. They are arranged at intervals and may be configured to be used as road lights.
  • the reflecting mirror is formed in a parabolic shape, and is arranged so that the center axis of the LED lamp is aligned with the center axis of the reflecting mirror, and is used as a projector. It may be constituted as follows.
  • the LED lamp has a columnar LED support body having a through hole formed along an axial direction,
  • the LED is mounted on a side surface of the LED support,
  • the cooling fan is provided on the first end side of the LED support;
  • the base is provided on the second end side of the LED support,
  • a cooling air outlet chamber formed between the second end of the LED support and the base; Cooling air from the cooling fan enters the through-hole from the first opening of the through-hole, and is guided to the cooling air outlet chamber via the second opening of the through-hole. It is configured to be discharged from the chamber.
  • the cooling air outlet chamber may be provided with an air flow dispersion member that disperses the cooling air that has exited from the second opening of the through hole outward in the radial direction.
  • the end of the LED support may be provided with a flange for guiding the cooling air coming out from the second opening of the through hole in the direction of the base.
  • the LED support may be disposed in the reflection space, and the cooling air outlet chamber may be disposed in the socket housing portion.
  • the present invention it is possible to provide an LED lamp capable of high power and high output, and a lighting fixture using the same, by preventing the performance of the cooling fan from decreasing and at the same time enhancing the cooling effect of the cooling fan.
  • FIG. 1 is a diagram illustrating a configuration example of an LED lamp according to the present embodiment.
  • FIG. 2A is an explanatory diagram illustrating a cooling air flow in the LED lamp according to the present embodiment.
  • FIG. 2B is an explanatory diagram illustrating a cooling air flow in another example of the LED lamp according to the present embodiment.
  • FIG. 2C is an explanatory diagram illustrating a cooling air flow in still another example of the LED lamp according to the present embodiment.
  • FIG. 2D is an explanatory diagram illustrating a cooling air flow in still another example of the LED lamp according to the present embodiment.
  • FIG. 3 is a diagram showing an example of the appearance of a road lamp using the LED lamp according to the present embodiment.
  • FIG. 3 is a diagram showing an example of the appearance of a road lamp using the LED lamp according to the present embodiment.
  • FIG. 4 is a diagram illustrating an example of the appearance of a projector using the LED lamp according to the present embodiment.
  • FIG. 5A is a diagram illustrating an example of a structure of a road light using the LED lamp according to the present embodiment.
  • FIG. 5B is a diagram showing another example of the structure of a road light using the LED lamp according to the present embodiment.
  • FIG. 6A is an explanatory diagram illustrating an example of a structure of a projector using the LED lamp according to the present embodiment.
  • FIG. 6B is an explanatory diagram illustrating another example of the structure of the projector using the LED lamp according to the present embodiment.
  • FIG. 6C is an explanatory diagram illustrating another example of the structure of the projector using the LED lamp according to the present embodiment.
  • FIG. 6A is an explanatory diagram illustrating an example of a structure of a projector using the LED lamp according to the present embodiment.
  • FIG. 6B is an explanatory diagram illustrating another example of the structure of the projector using the
  • FIG. 6D is an explanatory diagram illustrating another example of the structure of the projector using the LED lamp according to the present embodiment.
  • FIG. 6E is an explanatory diagram illustrating another example of the structure of the projector using the LED lamp according to the present embodiment.
  • FIG. 6F is an explanatory diagram illustrating another example of the structure of the projector using the LED lamp according to the present embodiment.
  • the LED lamp 10 includes an LED support 11, a base 13 provided on one side thereof, and a cooling fan 15 provided on the side opposite to the base 13.
  • the cooling fan 15 may be driven by a direct current brushless motor.
  • the center axis of the LED support 11 and the center axis (rotation axis) of the cooling fan 15 are aligned with the center axis of the LED lamp.
  • the LED lamp according to this embodiment is an open type in which no outer sphere is provided.
  • the LED lamp 10 further includes flange plates 19 ⁇ / b> A and 19 ⁇ / b> B provided on both sides of the LED support 11, a support plate 21 disposed at a predetermined interval from the base-side flange plate 19 ⁇ / b> B, and the base 13 and the support plate 21.
  • An insulator 23 mounted between them and a support column 25 provided between the base flange plate 19B and the support plate 21 are provided.
  • a cooling air outlet chamber 26 formed by a space corresponding to the dimension of the support column 25 is formed.
  • the cooling air outlet chamber 26 is directly connected to the external space around the LED lamp 10.
  • the LED support 11 has a columnar shape, and a plurality of LEDs 30 serving as light sources are mounted on the side surfaces thereof.
  • the LED support 11 has a quadrangular prism shape, but may have a polygonal column shape such as a hexagonal column shape.
  • Two LEDs 30 are mounted on each side surface, but three or more LEDs may be mounted.
  • the LED 30 includes a square substrate 30B and a circular LED element 30A mounted thereon.
  • the LED element 30A includes a plurality of LEDs (light emitting diodes). The LED elements are connected in series by lead wires (not shown).
  • the LED support 11 is made of a metal having high thermal conductivity, such as stainless steel or aluminum alloy, and has a heat sink function.
  • a through hole 111 (FIG. 2A) is formed in the LED support 11 along the axial direction.
  • a large number of thin plate-like heat radiation fins 113 (FIG. 2A) are provided on the inner surface of the through hole.
  • the fin 113 extends over the entire length along the axial direction of the through hole.
  • the shape of the fin is not particularly limited.
  • FIG. 2A shows a cross-sectional configuration of the main part of the LED lamp according to the present embodiment, in particular, the LED support 11, the cooling fan 15, and the cooling air outlet chamber 26.
  • the LED support 11 has a through hole 111 in the axial direction, and a large number of heat radiation fins 113 are formed therein.
  • the cross section of the through hole 111 may be circular, but may be square.
  • the central axis of the cooling fan 15 and the central axis of the through hole 111 of the LED support 11 are aligned.
  • a cooling fan 15 is provided in the first opening of the through hole 111, and a cooling air outlet chamber 26 is formed in the second opening on the opposite side.
  • a sealed space is formed between the two openings of the through hole 111.
  • the air cooling system of the LED lamp of this embodiment will be described.
  • a cooling air flow is formed along the axial direction of the cooling fan 15. Arrows indicate the path of the cooling air flow.
  • the cooling air passes through the cooling fan 15 and is guided to the through hole 111 of the LED support 11.
  • the cooling air enters the through-hole 111 from the first opening and exits from the second opening.
  • the cooling air flows from the cooling fan 15 toward the base 13 along the central axis of the LED lamp.
  • the temperature of the cooled air coming out of the second opening is relatively high.
  • the cooled air is discharged to the outside of the LED lamp 10 via the cooling air outlet chamber 26.
  • the cooling air comes into contact with the through holes 111 and the fins 113 of the LED support 11, heat exchange is performed, and the cooling air takes heat away from the LED support 11.
  • the through hole 111 of the LED support 11 has a sealed space except for the openings at both ends, all the cooling air from the cooling fan 15 passes through the through hole 111 of the LED support 11. , Used to cool the LED support 11. Therefore, the LED support 11 can be efficiently cooled. Thus, the LED 30 does not reach a high temperature.
  • the cooling fan 15 is sufficiently separated from the cooling air outlet chamber 26. Accordingly, the relatively hot air discharged from the cooling air outlet chamber 26 does not reach the cooling fan 15 directly. That is, relatively low temperature air can be supplied to the cooling fan 15. Therefore, the cooling effect by the cooling fan can be enhanced. Furthermore, the high temperature of the cooling fan 15 and the motor can be avoided. Accordingly, it is possible to avoid a decrease in performance of the cooling fan due to deterioration of the lubricating oil of the motor of the cooling fan.
  • an air flow dispersion member 27 is provided in the cooling air outlet chamber 26.
  • the air flow dispersion member 27 may be formed in a conical shape.
  • the structure of the LED lamp according to the present embodiment may be the same as the structure of the LED lamp shown in FIG. 2A except for the air flow dispersion member 27.
  • the cooled air that has exited from the second opening of the through hole 111 of the LED support 11 is discharged to the cooling air outlet chamber 26.
  • the cooled air collides with the air flow dispersion member 27, changes the course, and is discharged outside the LED lamp. That is, the cooled air is guided to the base 13 side by the air flow dispersion member 27.
  • the relatively high temperature air discharged from the cooling air outlet chamber 26 does not reach the cooling fan 15 directly. That is, relatively low temperature air can be supplied to the cooling fan 15.
  • a flange 29 is provided at the end of the cooling air outlet chamber 26 on the cooling fan side.
  • the collar portion 29 is attached to the end portion of the LED support 11 on the base side.
  • the structure of the LED lamp according to the present embodiment may be the same as the structure of the LED lamp shown in FIG.
  • the cooled air that has exited from the second opening of the through hole 111 of the LED support 11 is discharged to the cooling air outlet chamber 26.
  • the cooled air collides with the flange 29, changes the course, and is discharged outside the LED lamp. That is, the cooled air is guided to the base 13 side by the flange portion 29.
  • the relatively high temperature air discharged from the cooling air outlet chamber 26 does not reach the cooling fan 15 directly. That is, relatively low temperature air can be supplied to the cooling fan 15.
  • a flange 29 is provided at the end of the cooling air outlet chamber 26 on the cooling fan side, and an air flow dispersion member 27 is provided in the cooling air outlet chamber 26.
  • the structure of the LED lamp according to this embodiment may be the same as the structure of the LED lamp shown in FIG. 2C except for the air flow dispersion member 27.
  • the cooled air that has exited from the second opening of the through hole 111 of the LED support 11 is discharged to the cooling air outlet chamber 26.
  • the cooled air collides with the air flow dispersion member 27 and the collar portion 29A, changes the course, and is discharged outside the LED lamp. That is, the cooled air is guided to the base 13 side by the air flow dispersion member 27 and the flange 29.
  • the relatively high temperature air discharged from the cooling air outlet chamber 26 does not reach the cooling fan 15 directly. That is, relatively low temperature air can be supplied to the cooling fan 15.
  • the LED road light has a housing 51 that surrounds the LED lamp 10 (not shown).
  • a protective glass plate 55 is attached to the lower surface of the casing 51.
  • the internal structure of the housing 51 will be described in detail later.
  • the LED road light is attached to the tip of a pole 57 standing on the ground.
  • the LED projector includes a substantially cylindrical casing 61, an LED lamp 10 supported by the casing 61, and a reflecting mirror 63 surrounding the LED lamp 10.
  • the LED projector is attached to a predetermined structure by an arm 67.
  • the reflecting mirror 63 may be made of aluminum whose inner surface is finished to a mirror surface.
  • the LED road light includes a housing 51, a reflecting mirror 53, and an LED lamp 10.
  • the casing 51 is attached to the tip of a pole 57 standing on the ground.
  • the housing 51 has a socket housing portion 52 in which the socket 50 is mounted.
  • the socket 50 is made of a material having high thermal conductivity, such as a porcelain, and has a heat sink function.
  • the lower surface of the housing 51 has an opening, and a protective glass plate 55 is attached to the opening.
  • a substantially closed space is formed by the casing 51 and the glass plate 55.
  • the reflecting mirror 53 is disposed inside the casing 51 and at a predetermined interval from the casing 51.
  • the reflecting mirror 53 has a substantially box shape or a semi-oval shape with an open bottom. Accordingly, a substantially box-shaped reflection space 54 is formed below the reflecting mirror 53.
  • An air passage 56 and a socket housing portion 52 are formed between the housing 51 and the reflecting mirror 53. One end of the air passage 56 is connected to the socket housing portion 52, and the other end of the air passage 56 is connected to the reflection space 54.
  • the reflecting mirror 53 has a hole 53a.
  • the reflective space 54 and the socket storage portion 52 are connected through the hole 53a.
  • the LED lamp 10 is disposed through the hole 53a of the reflecting mirror 53.
  • the central axis of the LED lamp 10 may be horizontal, but may have a predetermined inclination angle with respect to the horizontal line.
  • the LED lamp 10 includes an LED support 11, a base 13, a cooling fan 15, and a cooling air outlet chamber 26, as shown in FIG. 2C. Further, a flange 29 is attached to the end of the cooling air outlet chamber 26.
  • the cooling fan 15 and the LED support 11 are disposed in the reflection space 54, and the cooling air outlet chamber 26 and the base 13 are disposed in the socket housing portion 52.
  • the flange portion 29 is disposed at the position of the hole 53 a of the reflecting mirror 53.
  • the base 13 of the LED lamp 10 is attached to the socket 50.
  • the cooling air outlet chamber 26 is directly and spatially connected to the socket housing portion 52. Accordingly, the air discharged from the cooling air outlet chamber 26 is discharged to the socket storage portion 52.
  • the air discharged from the cooling air outlet chamber 26 is guided to the socket housing portion 52 by the flange portion 29 changing the route.
  • the flow of air inside the LED road light of this embodiment will be described.
  • a cooling airflow is formed along the axial direction of the fan.
  • the cooling air passes through the through hole 111 (FIG. 2C) of the LED support 11 and is discharged to the outside of the LED lamp 10 through the cooling air outlet chamber 26.
  • the air after cooling discharged from the cooling air outlet chamber 26 has a relatively high temperature.
  • the cooling air outlet chamber 26 is connected to the socket housing portion 52.
  • the air discharged from the cooling air outlet chamber 26 is guided around the socket 50.
  • the socket 50 has a heat sink function. Accordingly, the air after cooling comes into contact with the socket 50 and is deprived of heat by the socket 50 to be cooled.
  • the cooled air further returns from the socket housing 52 to the reflection space 54 via the air passage 56.
  • the cooled air exchanges heat with the surroundings while flowing through the air passage 56 and is further cooled.
  • the air thus cooled returns to the reflection space 54 and is guided to the through hole 111 (FIG. 2C) of the LED support 11 by the cooling fan 15.
  • the cooling fan 15, the through hole 111 (FIG. 2C) of the LED support 11, the cooling air outlet chamber 26, the socket housing 52, the air passage 56 and the reflection space 54 constitute a closed loop air circulation path. Yes.
  • the relatively hot air discharged from the cooling air outlet chamber 26 does not reach the cooling fan 15 directly. That is, relatively low temperature air can be supplied to the cooling fan 15 via the air passage 56. Therefore, the cooling effect by the cooling fan 15 can be enhanced. Furthermore, the high temperature of the cooling fan 15 and the motor can be avoided. Accordingly, it is possible to avoid a decrease in performance of the cooling fan due to deterioration of the lubricating oil of the motor of the cooling fan.
  • the LED lamp 10 has the LED support body 11, the nozzle
  • This embodiment is different from the embodiment shown in FIG. 5B in that the cooling air outlet chamber 26 is not provided with the flange portion 29.
  • the LED lamp 10 is disposed through the hole 53a of the reflecting mirror 53.
  • the cooling fan 15 and the LED support 11 are disposed in the reflection space 54, and the cooling air outlet chamber 26 and the base 13 are disposed in the socket housing portion 52.
  • the boundary between the LED support 11 and the cooling air outlet chamber 26 is disposed at the position of the hole 53 a of the reflecting mirror 53.
  • the base 13 of the LED lamp 10 is attached to the socket 50.
  • the cooling air outlet chamber 26 is directly and spatially connected to the socket housing portion 52. Accordingly, the air discharged from the cooling air outlet chamber 26 is discharged to the socket storage portion 52.
  • the flow of air inside the LED road light of this embodiment is the same as the example of FIG. 5A.
  • the cooling fan 15, the through hole 111 (FIG. 2A) of the LED support 11, the cooling air outlet chamber 26, the socket housing portion 52, and the air passage 56 constitute a closed loop air circulation path.
  • the relatively high temperature air discharged from the cooling air outlet chamber 26 does not reach the cooling fan 15 directly like the LED road light of FIG. 5A. That is, relatively low temperature air can be supplied to the cooling fan 15 via the air passage 56. Therefore, the cooling effect by the cooling fan 15 can be enhanced. Furthermore, the high temperature of the cooling fan 15 and the motor can be avoided. Accordingly, it is possible to avoid a decrease in performance of the cooling fan due to deterioration of the lubricating oil of the motor of the cooling fan.
  • the LED projector includes a housing 61, a reflecting mirror 63, and an LED lamp 10.
  • the housing 61 has a socket housing portion 62 to which a socket 60 is attached.
  • the socket 60 is made of a material having high thermal conductivity, such as a porcelain, and has a heat sink function.
  • the housing 61 has a substantially cylindrical shape having an opening at one end.
  • a reflecting mirror 63 is attached to this opening.
  • the central axis of the casing 61 and the central axis of the reflecting mirror 63 are aligned.
  • a substantially closed space is formed by the casing 61 and the reflecting mirror 63. In the present embodiment, this space becomes the socket housing portion 62.
  • the reflecting mirror 63 may be a rotating paraboloid having a parabolic cross section.
  • the reflecting mirror 63 forms a substantially hemispherical reflecting space 64.
  • a protective glass plate 65 is attached to the end face of the reflecting mirror 63. Therefore, the reflection space 64 is a substantially hemispherical sealed space.
  • the reflecting mirror 63 has a hole 63a.
  • the reflective space 64 and the socket storage portion 62 are connected via the hole 63a.
  • the LED lamp 10 is disposed so as to penetrate the hole 63 a of the reflecting mirror 63.
  • the central axis of the LED lamp 10 and the central axis of the reflecting mirror 63 are aligned.
  • the LED lamp 10 includes an LED support 11, a base 13, a cooling fan 15, and a cooling air outlet chamber 26 as shown in FIG. 2A or 2B.
  • the cooling fan 15 and the LED support 11 are disposed in the reflection space 64, and the cooling air outlet chamber 26 and the base 13 are disposed in the socket housing portion 62.
  • the boundary between the LED support 11 and the cooling air outlet chamber 26 is disposed at the position of the hole 63 a of the reflecting mirror 63.
  • the base 13 of the LED lamp 10 is attached to the socket 60.
  • the cooling air outlet chamber 26 is spatially connected directly to the socket housing portion 62. Accordingly, the air discharged from the cooling air outlet chamber 26 is discharged to the socket housing portion 62.
  • the flow of air inside the LED projector of this embodiment will be described.
  • a cooling airflow is formed along the axial direction of the fan.
  • the cooling air passes through the through hole 111 (FIG. 2A) of the LED support 11 and is discharged to the outside of the LED lamp 10 through the cooling air outlet chamber 26.
  • the air after cooling discharged from the cooling air outlet chamber 26 has a relatively high temperature.
  • the cooling air outlet chamber 26 is connected to the socket housing portion 62.
  • the air discharged from the cooling air outlet chamber 26 is guided around the socket 60.
  • the socket 60 has a heat sink function. Accordingly, the air after cooling comes into contact with the socket 60 and is deprived of heat by the socket 60 to be cooled.
  • the reflection space 64, the cooling fan 15, the through hole 111 (FIG. 2A) of the LED support 11, the cooling air outlet chamber 26, and the socket housing portion 62 constitute an air circulation path.
  • the relatively high temperature air discharged from the cooling air outlet chamber 26 does not reach the cooling fan 15 directly. That is, relatively low temperature air can be supplied to the cooling fan 15. Therefore, the cooling effect by the cooling fan 15 can be enhanced. Furthermore, the high temperature of the cooling fan 15 and the motor can be avoided. Accordingly, it is possible to avoid a decrease in performance of the cooling fan due to deterioration of the lubricating oil of the motor of the cooling fan.
  • the LED lamp 10 has the LED support body 11, the nozzle
  • the LED lamp 10 is disposed through the hole 63a of the reflecting mirror 63.
  • the cooling fan 15 and the LED support 11 are disposed in the reflection space 64, and the cooling air outlet chamber 26 and the base 13 are disposed in the socket housing portion 62.
  • the flange portion 29 is disposed at the position of the hole 63 a of the reflecting mirror 63.
  • the base 13 of the LED lamp 10 is attached to the socket 60.
  • the cooling air outlet chamber 26 is spatially connected directly to the socket housing portion 62. Accordingly, the air discharged from the cooling air outlet chamber 26 is discharged to the socket housing portion 62.
  • the flow of air inside the LED projector of this embodiment will be described.
  • a cooling airflow is formed along the axial direction of the fan.
  • the cooling air passes through the through hole 111 (FIG. 2C) of the LED support 11 and is discharged to the outside of the LED lamp 10 through the cooling air outlet chamber 26.
  • the air after cooling discharged from the cooling air outlet chamber 26 has a relatively high temperature.
  • the cooling air outlet chamber 26 is connected to the socket housing portion 62.
  • the air discharged from the cooling air outlet chamber 26 is guided around the socket 60.
  • the socket 60 has a heat sink function. Accordingly, the air after cooling comes into contact with the socket 60 and is deprived of heat by the socket 60 to be cooled.
  • the external space, the reflection space 64, the cooling fan 15, the through hole 111 (FIG. 2C) of the LED support 11, the cooling air outlet chamber 26, and the socket housing portion 62 constitute an air circulation path. .
  • the relatively high temperature air discharged from the cooling air outlet chamber 26 does not reach the cooling fan 15 directly.
  • relatively low temperature air can be supplied to the cooling fan 15 from the external space. Therefore, the cooling effect by the cooling fan 15 can be enhanced.
  • the high temperature of the cooling fan 15 and the motor can be avoided. Accordingly, it is possible to avoid a decrease in performance of the cooling fan due to deterioration of the lubricating oil of the motor of the cooling fan.
  • the structure of an example of the LED projector according to the present embodiment will be described in detail with reference to FIG. 6C.
  • the LED projector of the present embodiment is different from the example shown in FIG. 6A in that an air hole 61a is provided in the casing 61 and an air hole 63b is provided in the reflecting mirror 63.
  • Other configurations may be the same as the example shown in FIG. 6A.
  • the air cooled by contacting the socket 60 in the socket housing portion 62 is discharged to the outside through the air hole 61 b of the housing 61. Further, relatively low temperature air is introduced into the reflecting space 64 from the external space through the air holes 63 a of the reflecting mirror 63.
  • the external space, the reflective space 64, the cooling fan 15, the through hole 111 (FIG. 2A) of the LED support 11, the cooling air outlet chamber 26, the socket housing portion 62, and the external space constitute an air circulation path. is doing.
  • the relatively high temperature air discharged from the cooling air outlet chamber 26 does not reach the cooling fan 15 directly.
  • relatively low temperature air from the external space can be supplied to the cooling fan 15. Therefore, the cooling effect by the cooling fan 15 can be enhanced.
  • the high temperature of the cooling fan 15 and the motor can be avoided. Accordingly, it is possible to avoid a decrease in performance of the cooling fan due to deterioration of the lubricating oil of the motor of the cooling fan.
  • the structure of an example of the LED projector according to the present embodiment will be described in detail with reference to FIG. 6D.
  • the LED projector according to the present embodiment is different from the example shown in FIG. 6B in that an air hole 61a is provided in the housing 61.
  • the other configuration may be the same as the example shown in FIG. 6B.
  • the air cooled by contacting the socket 60 in the socket housing portion 62 is discharged to the external space through the air hole 61 a of the housing 61. Further, relatively low temperature air is directly introduced into the reflection space 64 from the external space.
  • the external space, the reflective space 64, the cooling fan 15, the through hole 111 (FIG. 2C) of the LED support 11, the cooling air outlet chamber 26, the socket housing portion 62, and the external space constitute an air circulation path. is doing.
  • the relatively high temperature air discharged from the cooling air outlet chamber 26 does not reach the cooling fan 15 directly.
  • relatively low temperature air from the external space can be supplied to the cooling fan 15. Therefore, the cooling effect by the cooling fan 15 can be enhanced.
  • the high temperature of the cooling fan 15 and the motor can be avoided. Accordingly, it is possible to avoid a decrease in performance of the cooling fan due to deterioration of the lubricating oil of the motor of the cooling fan.
  • the LED projector includes a housing 61, a reflecting mirror 63, and an LED lamp 10.
  • the housing 61 has a socket housing portion 62 to which a socket 60 is attached.
  • the socket 60 is made of a material having high thermal conductivity, such as a porcelain, and has a heat sink function.
  • the housing 61 has a substantially cylindrical part 61A having an opening at one end, and a substantially hemispherical hemisphere part 61B connected to the opening.
  • a protective glass plate 65 is attached to the opening of the hemispherical portion 61B.
  • the reflecting mirror 63 is arranged inside the hemispherical part 61B of the casing 61 and at a predetermined interval from the hemispherical part 61B of the casing 61.
  • the central axis of the casing 61 and the central axis of the reflecting mirror 63 are aligned.
  • the reflecting mirror 63 may be a rotating paraboloid having a parabolic cross section.
  • the reflecting mirror 63 forms a substantially hemispherical reflecting space 64.
  • An air passage 66 and a socket housing portion 62 are formed between the housing 61 and the reflecting mirror 63.
  • An air hole 63 b that connects the air passage 66 and the reflection space 64 is provided at the edge of the reflecting mirror 63.
  • One end of the air passage 66 is connected to the socket housing portion 62, and the other end of the air passage 66 is connected to the reflection space 64.
  • the LED lamp 10 includes an LED support 11, a base 13, a cooling fan 15, and a cooling air outlet chamber 26 as shown in FIG. 2A or 2B.
  • the cooling fan 15 and the LED support 11 are disposed in the reflection space 64, and the cooling air outlet chamber 26 and the base 13 are disposed in the socket housing portion 62.
  • the boundary between the LED support 11 and the cooling air outlet chamber 26 is disposed at the position of the hole 63 a of the reflecting mirror 63.
  • the base 13 of the LED lamp 10 is attached to the socket 60.
  • the cooling air outlet chamber 26 is spatially connected directly to the socket housing portion 62. Accordingly, the air discharged from the cooling air outlet chamber 26 is discharged to the socket housing portion 62.
  • the flow of air inside the LED projector of this embodiment will be described.
  • a cooling airflow is formed along the axial direction of the fan.
  • the cooling air passes through the through hole 111 (FIG. 2A) of the LED support 11 and is discharged to the outside of the LED lamp 10 through the cooling air outlet chamber 26.
  • the air after cooling discharged from the cooling air outlet chamber 26 has a relatively high temperature.
  • the cooling air outlet chamber 26 is connected to the socket housing portion 62.
  • the air discharged from the cooling air outlet chamber 26 is guided around the socket 60.
  • the socket 60 has a heat sink function. Accordingly, the air after cooling comes into contact with the socket 60 and is deprived of heat by the socket 60 to be cooled.
  • the cooled air further returns from the socket housing 62 to the reflection space 64 via the air passage 66.
  • the cooled air exchanges heat with the surroundings while flowing through the air passage 66 and is further cooled.
  • the air thus cooled returns to the reflection space 64 and is guided to the through-hole 111 of the LED support 11 by the cooling fan 15.
  • the cooling fan 15, the through hole 111 (FIG. 2A) of the LED support 11, the cooling air outlet chamber 26, the socket housing portion 62, the air passage 66 and the reflection space 64 constitute a closed loop air circulation path. Yes.
  • the relatively high temperature air discharged from the cooling air outlet chamber 26 does not reach the cooling fan 15 directly. That is, relatively low temperature air can be supplied to the cooling fan 15 via the air passage 66. Therefore, the cooling effect by the cooling fan 15 can be enhanced. Furthermore, the high temperature of the cooling fan 15 and the motor can be avoided. Accordingly, it is possible to avoid a decrease in performance of the cooling fan due to deterioration of the lubricating oil of the motor of the cooling fan.
  • the LED lamp 10 has the LED support body 11, the nozzle
  • the LED lamp 10 is disposed through the hole 63a of the reflecting mirror 63.
  • the cooling fan 15 and the LED support 11 are disposed in the reflection space 64, and the cooling air outlet chamber 26 and the base 13 are disposed in the socket housing portion 62.
  • the flange portion 29 is disposed at the position of the hole 63 a of the reflecting mirror 63.
  • the base 13 of the LED lamp 10 is attached to the socket 60.
  • the cooling air outlet chamber 26 is spatially connected directly to the socket housing portion 62. Accordingly, the air discharged from the cooling air outlet chamber 26 is discharged to the socket housing portion 62.
  • the air cooled by contacting the socket 60 in the socket housing portion 62 is discharged to the external space via the air passage 66. Further, relatively low temperature air is directly introduced into the reflection space 64 from the external space.
  • the external space, the reflective space 64, the cooling fan 15, the through hole 111 (FIG. 2C) of the LED support 11, the cooling air outlet chamber 26, the socket housing portion 62, the air passage 66, and the external space are air. It constitutes a circulation path.
  • the relatively high temperature air discharged from the cooling air outlet chamber 26 does not reach the cooling fan 15 directly. That is, relatively low temperature air can be supplied to the cooling fan 15 from the external space. Therefore, the cooling effect by the cooling fan 15 can be enhanced. Furthermore, the high temperature of the cooling fan 15 and the motor can be avoided. Accordingly, it is possible to avoid a decrease in performance of the cooling fan due to deterioration of the lubricating oil of the motor of the cooling fan.

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  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
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Abstract

Provided is an illumination apparatus using an LED lamp capable of high power and high output, as a result of preventing the reduction of cooling fan performance and, simultaneously, increasing the cooling effect of the cooling fan. The LED illumination apparatus has: an LED lamp having an LED, a cooling fan, and a cap; a reflective mirror forming a reflective space; and a case comprising a socket having the LED lamp cap attached thereto and a socket housing section housing said socket. The reflective mirror has a hole connecting the reflective space and the socket housing section. The LED lamp is arranged penetrating the reflective mirror hole, such that the LED and the cooling fan area arranged inside the reflective space and the cap is arranged in the socket housing section. Cooling air generated by the cooling fan in the LED lamp flows towards the cap and air discharged from the LED lamp is guided to the socket housing section.

Description

ＬＥＤランプ及びそれを用いた照明器具LED lamp and lighting apparatus using the same
　本発明は、ＬＥＤランプを用いた照明器具に関し、特に、冷却ファンを備えたＬＥＤランプ及びそれを用いた照明器具に関する。 The present invention relates to a lighting fixture using an LED lamp, and more particularly, to an LED lamp equipped with a cooling fan and a lighting fixture using the same.
　発光ダイオード（以下、ＬＥＤ：Light Emitting Diode）を光源とするＬＥＤランプが広く普及している。近年、ＬＥＤランプの用途の拡大に伴って、ＬＥＤランプの高出力化及び高電力化が求められている。ＬＥＤランプは、放電ランプと比較して高い発光効率を有する利点があるが、ＬＥＤが高温化すると、発光効率が低下する欠点がある。そこで、ＬＥＤの高温化を防止するために様々な手段が講じられている。例えば、ＬＥＤを冷却するための冷却ファンを設ける。特許文献１には、密閉された外球内にＬＥＤ素子とガス流加速用ファンを設けたＬＥＤランプが開示されている。 LED lamps using light emitting diodes (hereinafter referred to as LEDs) as light sources are widely used. In recent years, with the expansion of the use of LED lamps, there is a demand for higher output and higher power of LED lamps. The LED lamp has an advantage of having a high luminous efficiency as compared with the discharge lamp, but has a disadvantage that the luminous efficiency is lowered when the LED is heated to a high temperature. Therefore, various measures have been taken to prevent the LED from becoming hot. For example, a cooling fan for cooling the LED is provided. Patent Document 1 discloses an LED lamp in which an LED element and a gas flow acceleration fan are provided in a sealed outer sphere.
　冷却ファンの性能が低下すると、ＬＥＤが高温化し発光効率が低下する。冷却ファンの性能低下は、モータの潤滑油の劣化に起因する場合が多い。潤滑油の劣化は高温では加速される。特許文献２には、冷却ファンの信頼性を向上させるための手段として空気制御部を設けたＬＥＤ照明装置が記載されている。 ¡If the performance of the cooling fan decreases, the LED becomes hot and the luminous efficiency decreases. In many cases, the performance deterioration of the cooling fan is caused by the deterioration of the lubricating oil of the motor. The deterioration of the lubricating oil is accelerated at high temperatures. Patent Document 2 describes an LED lighting device provided with an air control unit as means for improving the reliability of a cooling fan.
特開2012-156036号公報JP 2012-156036 特開2012-226960号公報JP 2012-226960 A
　ＬＥＤランプを用いた照明器具では、ＬＥＤランプの周囲の構造に起因して、冷却ファンに比較的高温の空気が供給される場合がある。冷却ファンによる冷却効果を高めるためには、冷却ファンに比較的低温の空気を供給する必要がある。 In a lighting fixture using an LED lamp, relatively high-temperature air may be supplied to the cooling fan due to the structure around the LED lamp. In order to enhance the cooling effect of the cooling fan, it is necessary to supply relatively low temperature air to the cooling fan.
　本発明の目的は、冷却ファンの性能低下を防止すると同時に、冷却ファンによる冷却効果を高めることによって、高電力且つ高出力が可能なＬＥＤランプ及びそれを用いた照明器具を提供することにある。 An object of the present invention is to provide an LED lamp capable of high power and high output and a lighting fixture using the same by preventing the performance of the cooling fan from being lowered and at the same time enhancing the cooling effect of the cooling fan.
　本発明の実施形態によると、ＬＥＤランプは、軸線方向に沿って形成された貫通孔を有する柱状のＬＥＤ支持体と、該ＬＥＤ支持体の側面に装着されたＬＥＤと、前記ＬＥＤ支持体の第１の端部の側に設けられた冷却ファンと、前記ＬＥＤ支持体の第２の端部の側に設けられた口金と、前記ＬＥＤ支持体の第２の端部と前記口金の間に形成された冷却空気出口室と、を有し、
　前記冷却ファンからの冷却用空気は、前記貫通孔の第１の開口から前記貫通孔に入り、前記貫通孔の第２の開口から出て、前記冷却空気出口室を経由して外部に導かれるように構成されている。 According to an embodiment of the present invention, an LED lamp includes a columnar LED support having a through-hole formed along an axial direction, an LED mounted on a side surface of the LED support, and a first LED support. A cooling fan provided on one end side, a base provided on a second end side of the LED support, and a second end of the LED support formed between the base and the base A cooled air outlet chamber,
Cooling air from the cooling fan enters the through hole from the first opening of the through hole, exits from the second opening of the through hole, and is guided to the outside through the cooling air outlet chamber. It is configured as follows.
　本発明の実施形態によると、前記ＬＥＤランプにおいて、前記ＬＥＤ支持体の貫通孔に放熱用のフィンが設けられている、としてよい。 According to an embodiment of the present invention, in the LED lamp, a heat dissipation fin may be provided in the through hole of the LED support.
　本発明の実施形態によると、前記ＬＥＤランプにおいて、前記冷却空気出口室には前記貫通孔の第２の開口から出た冷却用空気を半径方向外方に分散させる空気流分散部材が設けられている、としてよい。 According to an embodiment of the present invention, in the LED lamp, the cooling air outlet chamber is provided with an air flow dispersion member that disperses the cooling air exiting from the second opening of the through hole outward in the radial direction. It's okay.
　本発明の実施形態によると、前記ＬＥＤランプにおいて、前記ＬＥＤ支持体の第２の端部には前記貫通孔の第２の開口から出た冷却用空気を半径方向外方に導くための鍔部が設けられている、としてよい。 According to an embodiment of the present invention, in the LED lamp, the second end portion of the LED support body is a flange portion that guides cooling air from the second opening of the through hole outward in the radial direction. May be provided.
　本発明の実施形態によると、前記ＬＥＤランプにおいて、前記冷却ファンと前記ＬＥＤ支持体の第１の端部の間に断熱性材料によって形成された仕切り部材が設けられている、としてよい。 According to an embodiment of the present invention, in the LED lamp, a partition member formed of a heat insulating material may be provided between the cooling fan and the first end of the LED support.
　本発明の実施形態によると、前記ＬＥＤランプにおいて、前記冷却ファンは筐体に支持されており、該筐体は前記仕切り部材に装着されている、としてよい。 According to an embodiment of the present invention, in the LED lamp, the cooling fan may be supported by a housing, and the housing may be attached to the partition member.
　本発明の実施形態によると、前記ＬＥＤランプにおいて、
　前記ＬＥＤ支持体の第２の端部と前記口金の間に支柱が設けられており、該支柱によって前記冷却空気出口室が形成されている、としてよい。 According to an embodiment of the present invention, in the LED lamp,
A support may be provided between the second end of the LED support and the base, and the cooling air outlet chamber may be formed by the support.
　本発明の実施形態によると、ＬＥＤ照明器具は、
　ＬＥＤ、冷却ファン及び口金を有するＬＥＤランプと、
　反射空間を形成する反射鏡と、
　前記ＬＥＤランプの口金が装着されたソケットと該ソケットを収納するソケット収納部を備えた筐体と、
を有し、
　前記反射鏡は前記反射空間と前記ソケット収納部とを接続する孔を有し、
　前記ＬＥＤランプは、前記ＬＥＤ及び冷却ファンが前記反射空間内に配置され、前記口金が前記ソケット収納部に配置されるように、前記反射鏡の孔を貫通して配置され、
　前記ＬＥＤランプにて前記冷却ファンによって生成された冷却用空気は前記口金に向けて流れ、前記ＬＥＤランプから排出された空気は前記ソケット収納部に導かれる。 According to an embodiment of the present invention, the LED lighting fixture is:
An LED lamp having an LED, a cooling fan and a base;
A reflector that forms a reflective space;
A socket provided with a socket to which the base of the LED lamp is mounted, and a socket housing portion for housing the socket;
Have
The reflecting mirror has a hole for connecting the reflecting space and the socket housing portion;
The LED lamp is disposed through the hole of the reflecting mirror so that the LED and the cooling fan are disposed in the reflection space, and the base is disposed in the socket housing portion.
The cooling air generated by the cooling fan in the LED lamp flows toward the base, and the air discharged from the LED lamp is guided to the socket housing portion.
　本実施形態によると前記ＬＥＤ照明器具において、前記ソケットはヒートシンクの機能を有し、前記ＬＥＤランプから排出された空気は前記ソケットに接触するように構成されてよい。 According to the present embodiment, in the LED lighting apparatus, the socket may function as a heat sink, and air discharged from the LED lamp may be configured to contact the socket.
　本実施形態によると前記ＬＥＤ照明器具において、前記筐体と前記反射鏡の間に空気通路が形成され、前記空気通路の一方の端部は前記ソケット収納部に接続され、前記空気通路の他方の端部は前記反射空間に接続されており、前記空気通路と前記反射空間により閉ループの空気循環経路が構成されてよい。 According to this embodiment, in the LED lighting apparatus, an air passage is formed between the housing and the reflecting mirror, one end of the air passage is connected to the socket housing portion, and the other end of the air passage is provided. The end portion is connected to the reflection space, and a closed loop air circulation path may be constituted by the air passage and the reflection space.
　本実施形態によると前記ＬＥＤ照明器具において、前記筐体の下面は開口を有し、前記反射鏡の下面は開口を有し、前記反射鏡は前記筐体の内側に且つ前記筐体より所定の間隔にて配置されており、道路灯として使用されるように構成されてよい。 According to this embodiment, in the LED lighting apparatus, the lower surface of the housing has an opening, the lower surface of the reflecting mirror has an opening, and the reflecting mirror is located inside the housing and is more predetermined than the housing. They are arranged at intervals and may be configured to be used as road lights.
　本実施形態によると前記ＬＥＤ照明器具において、前記反射鏡は回転放物線状に形成され、前記ＬＥＤランプの中心軸線が前記反射鏡の中心軸線に整合するように配置されており、投光器として使用されるように構成されてよい。 According to this embodiment, in the LED lighting apparatus, the reflecting mirror is formed in a parabolic shape, and is arranged so that the center axis of the LED lamp is aligned with the center axis of the reflecting mirror, and is used as a projector. It may be constituted as follows.
　本実施形態によると前記ＬＥＤ照明器具において、前記ＬＥＤランプは、軸線方向に沿って形成された貫通孔を有する柱状のＬＥＤ支持体を有し、
前記ＬＥＤは前記ＬＥＤ支持体の側面に装着され、
前記冷却ファンは前記ＬＥＤ支持体の第１の端部の側に設けられ、
前記口金は前記ＬＥＤ支持体の第２の端部の側に設けられ、
前記ＬＥＤ支持体の第２の端部と前記口金の間に形成された冷却空気出口室とを有し、
前記冷却ファンからの冷却用空気は、前記貫通孔の第１の開口から前記貫通孔に入り、前記貫通孔の第２の開口を経由して前記冷却空気出口室に導かれ、前記冷却空気出口室より排出されるように構成されている。 According to this embodiment, in the LED lighting apparatus, the LED lamp has a columnar LED support body having a through hole formed along an axial direction,
The LED is mounted on a side surface of the LED support,
The cooling fan is provided on the first end side of the LED support;
The base is provided on the second end side of the LED support,
A cooling air outlet chamber formed between the second end of the LED support and the base;
Cooling air from the cooling fan enters the through-hole from the first opening of the through-hole, and is guided to the cooling air outlet chamber via the second opening of the through-hole. It is configured to be discharged from the chamber.
　本実施形態によると前記ＬＥＤ照明器具において、前記冷却空気出口室には前記貫通孔の第２の開口から出た冷却用空気を半径方向外方に分散させる空気流分散部材が設けられてよい。 According to this embodiment, in the LED lighting apparatus, the cooling air outlet chamber may be provided with an air flow dispersion member that disperses the cooling air that has exited from the second opening of the through hole outward in the radial direction.
　本実施形態によると前記ＬＥＤ照明器具において、前記ＬＥＤ支持体の端部には前記貫通孔の第２の開口から出た冷却用空気を前記口金の方向に導くための鍔部が設けられてよい。 According to this embodiment, in the LED lighting apparatus, the end of the LED support may be provided with a flange for guiding the cooling air coming out from the second opening of the through hole in the direction of the base. .
　本実施形態によると前記ＬＥＤ照明器具において、前記ＬＥＤ支持体は前記反射空間に配置され、前記冷却空気出口室は前記ソケット収納部に配置されてよい。 According to the present embodiment, in the LED lighting apparatus, the LED support may be disposed in the reflection space, and the cooling air outlet chamber may be disposed in the socket housing portion.
　本発明によれば、冷却ファンの性能低下を防止すると同時に、冷却ファンによる冷却効果を高めることによって、高電力且つ高出力が可能なＬＥＤランプ及びそれを用いた照明器具を提供することができる。 According to the present invention, it is possible to provide an LED lamp capable of high power and high output, and a lighting fixture using the same, by preventing the performance of the cooling fan from decreasing and at the same time enhancing the cooling effect of the cooling fan.
図１は、本実施形態に係るＬＥＤランプの構成例を説明する図である。FIG. 1 is a diagram illustrating a configuration example of an LED lamp according to the present embodiment. 図２Ａは、本実施形態に係るＬＥＤランプにおける冷却用空気流を説明する説明図である。FIG. 2A is an explanatory diagram illustrating a cooling air flow in the LED lamp according to the present embodiment. 図２Ｂは、本実施形態に係るＬＥＤランプの他の例における冷却用空気流を説明する説明図である。FIG. 2B is an explanatory diagram illustrating a cooling air flow in another example of the LED lamp according to the present embodiment. 図２Ｃは、本実施形態に係るＬＥＤランプの更に他の例における冷却用空気流を説明する説明図である。FIG. 2C is an explanatory diagram illustrating a cooling air flow in still another example of the LED lamp according to the present embodiment. 図２Ｄは、本実施形態に係るＬＥＤランプの更に他の例における冷却用空気流を説明する説明図である。FIG. 2D is an explanatory diagram illustrating a cooling air flow in still another example of the LED lamp according to the present embodiment. 図３は、本実施形態に係るＬＥＤランプを用いた道路灯の外観の例を示す図である。FIG. 3 is a diagram showing an example of the appearance of a road lamp using the LED lamp according to the present embodiment. 図４は、本実施形態に係るＬＥＤランプを用いた投光器の外観の例を示す図である。FIG. 4 is a diagram illustrating an example of the appearance of a projector using the LED lamp according to the present embodiment. 図５Ａは、本実施形態に係るＬＥＤランプを用いた道路灯の構造の例を示す図である。FIG. 5A is a diagram illustrating an example of a structure of a road light using the LED lamp according to the present embodiment. 図５Ｂは、本実施形態に係るＬＥＤランプを用いた道路灯の構造の他の例を示す図である。FIG. 5B is a diagram showing another example of the structure of a road light using the LED lamp according to the present embodiment. 図６Ａは、本実施形態に係るＬＥＤランプを用いた投光器の構造の例を説明する説明図である。FIG. 6A is an explanatory diagram illustrating an example of a structure of a projector using the LED lamp according to the present embodiment. 図６Ｂは、本実施形態に係るＬＥＤランプを用いた投光器の構造の他の例を説明する説明図である。FIG. 6B is an explanatory diagram illustrating another example of the structure of the projector using the LED lamp according to the present embodiment. 図６Ｃは、本実施形態に係るＬＥＤランプを用いた投光器の構造の他の例を説明する説明図である。FIG. 6C is an explanatory diagram illustrating another example of the structure of the projector using the LED lamp according to the present embodiment. 図６Ｄは、本実施形態に係るＬＥＤランプを用いた投光器の構造の他の例を説明する説明図である。FIG. 6D is an explanatory diagram illustrating another example of the structure of the projector using the LED lamp according to the present embodiment. 図６Ｅは、本実施形態に係るＬＥＤランプを用いた投光器の構造の他の例を説明する説明図である。FIG. 6E is an explanatory diagram illustrating another example of the structure of the projector using the LED lamp according to the present embodiment. 図６Ｆは、本実施形態に係るＬＥＤランプを用いた投光器の構造の他の例を説明する説明図である。FIG. 6F is an explanatory diagram illustrating another example of the structure of the projector using the LED lamp according to the present embodiment.
　以下、本発明に係るＬＥＤランプ及びそれを用いた照明器具の実施形態に関して、添付の図面を参照しながら詳細に説明する。なお、図中、同一の要素に対しては同一の参照符号を付して、重複した説明を省略する。 Hereinafter, embodiments of an LED lamp and a lighting apparatus using the LED lamp according to the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.
　図１を参照して本実施形態に係るＬＥＤランプの例を説明する。ＬＥＤランプ１０は、ＬＥＤ支持体１１と、その一方の側に設けられた口金１３と、口金１３とは反対側に設けられた冷却ファン１５とを有する。冷却ファン１５は、直流ブラシレスモータによって駆動されてよい。ＬＥＤ支持体１１の中心軸線と冷却ファン１５の中心軸線（回転軸線）は、ＬＥＤランプの中心軸線に整合している。本実施形態に係るＬＥＤランプは、外球を設けない開放型である。 An example of an LED lamp according to the present embodiment will be described with reference to FIG. The LED lamp 10 includes an LED support 11, a base 13 provided on one side thereof, and a cooling fan 15 provided on the side opposite to the base 13. The cooling fan 15 may be driven by a direct current brushless motor. The center axis of the LED support 11 and the center axis (rotation axis) of the cooling fan 15 are aligned with the center axis of the LED lamp. The LED lamp according to this embodiment is an open type in which no outer sphere is provided.
　ＬＥＤランプ１０は、更に、ＬＥＤ支持体１１の両側に設けられたフランジ板１９Ａ、１９Ｂと、口金側フランジ板１９Ｂより所定の間隔にて配置された支持板２１と、口金１３と支持板２１の間に装着された絶縁体２３と、口金側フランジ板１９Ｂと支持板２１の間に設けられた支柱２５を有する。口金側フランジ板１９Ｂと支持板２１の間には、支柱２５の寸法に対応する空間によって構成された冷却空気出口室２６が形成されている。冷却空気出口室２６はＬＥＤランプ１０の周囲の外部空間に直接接続されている。 The LED lamp 10 further includes flange plates 19 </ b> A and 19 </ b> B provided on both sides of the LED support 11, a support plate 21 disposed at a predetermined interval from the base-side flange plate 19 </ b> B, and the base 13 and the support plate 21. An insulator 23 mounted between them and a support column 25 provided between the base flange plate 19B and the support plate 21 are provided. Between the base side flange plate 19B and the support plate 21, a cooling air outlet chamber 26 formed by a space corresponding to the dimension of the support column 25 is formed. The cooling air outlet chamber 26 is directly connected to the external space around the LED lamp 10.
　ＬＥＤ支持体１１は柱状であり、その側面に光源となる複数のＬＥＤ３０が装着されている。図示の例では、ＬＥＤ支持体１１は４角柱状であるが、６角柱状等の多角柱状であってもよい。各側面に２つのＬＥＤ３０が装着されているが、３つ以上のＬＥＤを装着してもよい。ＬＥＤ３０は、正方形の基板３０Ｂとその上に装着された円形のＬＥＤ素子３０Ａを有する。ＬＥＤ素子３０Ａは、複数のＬＥＤ（発光ダイオード）を含む。ＬＥＤ素子は図示しないリード線によって直列に接続されている。 The LED support 11 has a columnar shape, and a plurality of LEDs 30 serving as light sources are mounted on the side surfaces thereof. In the illustrated example, the LED support 11 has a quadrangular prism shape, but may have a polygonal column shape such as a hexagonal column shape. Two LEDs 30 are mounted on each side surface, but three or more LEDs may be mounted. The LED 30 includes a square substrate 30B and a circular LED element 30A mounted thereon. The LED element 30A includes a plurality of LEDs (light emitting diodes). The LED elements are connected in series by lead wires (not shown).
　ＬＥＤ支持体１１は、熱伝導性が高い金属、例えば、ステンレス鋼、アルミニウム合金、等によって構成され、ヒートシンクの機能を有する。ＬＥＤ支持体１１の内部には軸線方向に沿って貫通孔１１１（図２Ａ）が形成されている。この貫通孔の内面には、薄い板状の多数の放熱用のフィン１１３（図２Ａ）が設けられている。フィン１１３は、貫通孔の軸線方向に沿って全長に渡って延びている。フィンの形状は特に限定されない。 The LED support 11 is made of a metal having high thermal conductivity, such as stainless steel or aluminum alloy, and has a heat sink function. A through hole 111 (FIG. 2A) is formed in the LED support 11 along the axial direction. A large number of thin plate-like heat radiation fins 113 (FIG. 2A) are provided on the inner surface of the through hole. The fin 113 extends over the entire length along the axial direction of the through hole. The shape of the fin is not particularly limited.
　図２Ａは、本実施形態に係るＬＥＤランプの主要部、特に、ＬＥＤ支持体１１と冷却ファン１５と冷却空気出口室２６の断面構成を示す。ＬＥＤ支持体１１は軸線方向の貫通孔１１１を有し、そこに多数の放熱用のフィン１１３が形成されている。貫通孔１１１の断面は、円形であってよいが、方形であってもよい。冷却ファン１５の中心軸線とＬＥＤ支持体１１の貫通孔１１１の中心軸線は整合している。貫通孔１１１の第１の開口には冷却ファン１５が設けられ、反対側の第２の開口には冷却空気出口室２６が形成されている。貫通孔１１１の２つの開口の間は密閉空間を形成している。 FIG. 2A shows a cross-sectional configuration of the main part of the LED lamp according to the present embodiment, in particular, the LED support 11, the cooling fan 15, and the cooling air outlet chamber 26. The LED support 11 has a through hole 111 in the axial direction, and a large number of heat radiation fins 113 are formed therein. The cross section of the through hole 111 may be circular, but may be square. The central axis of the cooling fan 15 and the central axis of the through hole 111 of the LED support 11 are aligned. A cooling fan 15 is provided in the first opening of the through hole 111, and a cooling air outlet chamber 26 is formed in the second opening on the opposite side. A sealed space is formed between the two openings of the through hole 111.
　ここで本実施形態のＬＥＤランプの空冷システムを説明する。冷却ファン１５を回転させると、冷却ファン１５の軸線方向に沿って冷却用空気流が形成される。矢印は、冷却用空気流の経路を示す。冷却用空気は、冷却ファン１５を貫通し、ＬＥＤ支持体１１の貫通孔１１１に導かれる。冷却用空気は、第１の開口から貫通孔１１１に入り、第２の開口から出る。本実施形態のＬＥＤランプでは、冷却用空気は、ＬＥＤランプの中心軸線に沿って、冷却ファン１５から口金１３に向けて流れる。第２の開口から出た冷却後の空気の温度は比較的高い。冷却後の空気は、冷却空気出口室２６を経由してＬＥＤランプ１０の外部に排出される。 Here, the air cooling system of the LED lamp of this embodiment will be described. When the cooling fan 15 is rotated, a cooling air flow is formed along the axial direction of the cooling fan 15. Arrows indicate the path of the cooling air flow. The cooling air passes through the cooling fan 15 and is guided to the through hole 111 of the LED support 11. The cooling air enters the through-hole 111 from the first opening and exits from the second opening. In the LED lamp of this embodiment, the cooling air flows from the cooling fan 15 toward the base 13 along the central axis of the LED lamp. The temperature of the cooled air coming out of the second opening is relatively high. The cooled air is discharged to the outside of the LED lamp 10 via the cooling air outlet chamber 26.
　冷却用空気がＬＥＤ支持体１１の貫通孔１１１及びフィン１１３に接触すると熱交換が行われ、冷却用空気はＬＥＤ支持体１１より熱を奪う。本実施形態では、ＬＥＤ支持体１１の貫通孔１１１は、両端の開口を除いて、密閉空間を有するから、冷却ファン１５からの冷却用空気は全てＬＥＤ支持体１１の貫通孔１１１内を通過し、ＬＥＤ支持体１１の冷却に使用される。従って、ＬＥＤ支持体１１を効率的に冷却することができる。こうして、ＬＥＤ３０が高温となることはない。 When the cooling air comes into contact with the through holes 111 and the fins 113 of the LED support 11, heat exchange is performed, and the cooling air takes heat away from the LED support 11. In the present embodiment, since the through hole 111 of the LED support 11 has a sealed space except for the openings at both ends, all the cooling air from the cooling fan 15 passes through the through hole 111 of the LED support 11. , Used to cool the LED support 11. Therefore, the LED support 11 can be efficiently cooled. Thus, the LED 30 does not reach a high temperature.
　本実施形態のＬＥＤランプ１０では、冷却ファン１５は冷却空気出口室２６から十分に離れている。従って、冷却空気出口室２６から排出された比較的高温の空気が直接冷却ファン１５に到達することはない。即ち、冷却ファン１５に比較的低温の空気を供給することができる。従って、冷却ファンによる冷却効果を高めることができる。更に、冷却ファン１５及びモータの高温化を回避することができる。従って、冷却ファンのモータの潤滑油の劣化に起因する冷却ファンの性能低下を回避することができる。 In the LED lamp 10 of the present embodiment, the cooling fan 15 is sufficiently separated from the cooling air outlet chamber 26. Accordingly, the relatively hot air discharged from the cooling air outlet chamber 26 does not reach the cooling fan 15 directly. That is, relatively low temperature air can be supplied to the cooling fan 15. Therefore, the cooling effect by the cooling fan can be enhanced. Furthermore, the high temperature of the cooling fan 15 and the motor can be avoided. Accordingly, it is possible to avoid a decrease in performance of the cooling fan due to deterioration of the lubricating oil of the motor of the cooling fan.
　図２Ｂを参照して本実施形態に係るＬＥＤランプの他の例を説明する。本実施形態では、冷却空気出口室２６に空気流分散部材２７が設けられている。空気流分散部材２７は円錐状に形成されてよい。本実施形態に係るＬＥＤランプの構造は、空気流分散部材２７以外は、図２Ａに示したＬＥＤランプの構造と同一であってよい。 Another example of the LED lamp according to the present embodiment will be described with reference to FIG. 2B. In the present embodiment, an air flow dispersion member 27 is provided in the cooling air outlet chamber 26. The air flow dispersion member 27 may be formed in a conical shape. The structure of the LED lamp according to the present embodiment may be the same as the structure of the LED lamp shown in FIG. 2A except for the air flow dispersion member 27.
　ＬＥＤ支持体１１の貫通孔１１１の第２の開口から出た冷却後の空気は、冷却空気出口室２６に排出される。冷却後の空気は、空気流分散部材２７に衝突し、進路を変更して、ＬＥＤランプの外部に排出される。即ち、冷却後の空気は、空気流分散部材２７によって口金１３側に導かれる。本実施形態では、冷却空気出口室２６から排出された比較的高温の空気が直接冷却ファン１５に到達することはない。即ち、冷却ファン１５に比較的低温の空気を供給することができる。 The cooled air that has exited from the second opening of the through hole 111 of the LED support 11 is discharged to the cooling air outlet chamber 26. The cooled air collides with the air flow dispersion member 27, changes the course, and is discharged outside the LED lamp. That is, the cooled air is guided to the base 13 side by the air flow dispersion member 27. In the present embodiment, the relatively high temperature air discharged from the cooling air outlet chamber 26 does not reach the cooling fan 15 directly. That is, relatively low temperature air can be supplied to the cooling fan 15.
　図２Ｃを参照して本実施形態に係るＬＥＤランプの他の例を説明する。本実施形態では、冷却空気出口室２６の冷却ファン側の端部に鍔部２９が設けられている。本例では、鍔部２９は、ＬＥＤ支持体１１の口金側の端部に装着されている。本実施形態に係るＬＥＤランプの構造は、鍔部２９以外は、図２Ａに示したＬＥＤランプの構造と同一であってよい。 Another example of the LED lamp according to this embodiment will be described with reference to FIG. 2C. In the present embodiment, a flange 29 is provided at the end of the cooling air outlet chamber 26 on the cooling fan side. In this example, the collar portion 29 is attached to the end portion of the LED support 11 on the base side. The structure of the LED lamp according to the present embodiment may be the same as the structure of the LED lamp shown in FIG.
　ＬＥＤ支持体１１の貫通孔１１１の第２の開口から出た冷却後の空気は、冷却空気出口室２６に排出される。冷却後の空気は、鍔部２９に衝突し、進路を変更して、ＬＥＤランプの外部に排出される。即ち、冷却後の空気は、鍔部２９によって口金１３側に導かれる。本実施形態では、冷却空気出口室２６から排出された比較的高温の空気が直接冷却ファン１５に到達することはない。即ち、冷却ファン１５に比較的低温の空気を供給することができる。 The cooled air that has exited from the second opening of the through hole 111 of the LED support 11 is discharged to the cooling air outlet chamber 26. The cooled air collides with the flange 29, changes the course, and is discharged outside the LED lamp. That is, the cooled air is guided to the base 13 side by the flange portion 29. In the present embodiment, the relatively high temperature air discharged from the cooling air outlet chamber 26 does not reach the cooling fan 15 directly. That is, relatively low temperature air can be supplied to the cooling fan 15.
　図２Ｄを参照して本実施形態に係るＬＥＤランプの他の例を説明する。本実施形態では、冷却空気出口室２６の冷却ファン側の端部に鍔部２９が設けられ、更に、冷却空気出口室２６に空気流分散部材２７を設けられている。本実施形態に係るＬＥＤランプの構造は、空気流分散部材２７以外は、図２Ｃに示したＬＥＤランプの構造と同一であってよい。 Another example of the LED lamp according to this embodiment will be described with reference to FIG. 2D. In the present embodiment, a flange 29 is provided at the end of the cooling air outlet chamber 26 on the cooling fan side, and an air flow dispersion member 27 is provided in the cooling air outlet chamber 26. The structure of the LED lamp according to this embodiment may be the same as the structure of the LED lamp shown in FIG. 2C except for the air flow dispersion member 27.
　ＬＥＤ支持体１１の貫通孔１１１の第２の開口から出た冷却後の空気は、冷却空気出口室２６に排出される。冷却後の空気は、空気流分散部材２７及び鍔部２９Ａに衝突し、進路を変更して、ＬＥＤランプの外部に排出される。即ち、冷却後の空気は、空気流分散部材２７及び鍔部２９によって口金１３側に導かれる。本実施形態では、冷却空気出口室２６から排出された比較的高温の空気が直接冷却ファン１５に到達することはない。即ち、冷却ファン１５に比較的低温の空気を供給することができる。以下に、本実施形態によるＬＥＤランプを使用する照明器具の例を説明する。 The cooled air that has exited from the second opening of the through hole 111 of the LED support 11 is discharged to the cooling air outlet chamber 26. The cooled air collides with the air flow dispersion member 27 and the collar portion 29A, changes the course, and is discharged outside the LED lamp. That is, the cooled air is guided to the base 13 side by the air flow dispersion member 27 and the flange 29. In the present embodiment, the relatively high temperature air discharged from the cooling air outlet chamber 26 does not reach the cooling fan 15 directly. That is, relatively low temperature air can be supplied to the cooling fan 15. Below, the example of the lighting fixture which uses the LED lamp by this embodiment is demonstrated.
　図３を参照して、本実施形態によるＬＥＤランプを使用するＬＥＤ道路灯の例を説明する。ＬＥＤ道路灯は、ＬＥＤランプ１０（図示なし）を囲む筐体５１を有する。筐体５１の下面には、保護用のガラス板５５が装着されている。筐体５１の内部構造は後に詳細に説明する。ＬＥＤ道路灯は、地上に立てられたポール５７の先端に装着される。 Referring to FIG. 3, an example of an LED road light using the LED lamp according to the present embodiment will be described. The LED road light has a housing 51 that surrounds the LED lamp 10 (not shown). A protective glass plate 55 is attached to the lower surface of the casing 51. The internal structure of the housing 51 will be described in detail later. The LED road light is attached to the tip of a pole 57 standing on the ground.
　図４を参照して、本実施形態によるＬＥＤランプを使用するＬＥＤ投光器の例を説明する。ＬＥＤ投光器は、略円筒状の筐体６１と、筐体６１に支持されたＬＥＤランプ１０と、ＬＥＤランプ１０を囲む反射鏡６３と、を有する。ＬＥＤ投光器は、アーム６７によって所定の構造物に装着される。反射鏡６３は、内面が鏡面に仕上げられたアルミ製であってよい。 With reference to FIG. 4, an example of an LED projector using the LED lamp according to the present embodiment will be described. The LED projector includes a substantially cylindrical casing 61, an LED lamp 10 supported by the casing 61, and a reflecting mirror 63 surrounding the LED lamp 10. The LED projector is attached to a predetermined structure by an arm 67. The reflecting mirror 63 may be made of aluminum whose inner surface is finished to a mirror surface.
　図５Ａを参照して、本実施形態によるＬＥＤ道路灯の例の構造を詳細に説明する。ＬＥＤ道路灯は、筐体５１と、反射鏡５３と、ＬＥＤランプ１０とを有する。筐体５１は地上に立てられたポール５７の先端に装着される。筐体５１はソケット収納部５２を有し、そこにソケット５０が装着されている。本実施形態では、ソケット５０は、熱伝導性が高い材料、例えば、磁器、等によって構成され、ヒートシンクの機能を有する。 With reference to FIG. 5A, the structure of the example of the LED road light by this embodiment is demonstrated in detail. The LED road light includes a housing 51, a reflecting mirror 53, and an LED lamp 10. The casing 51 is attached to the tip of a pole 57 standing on the ground. The housing 51 has a socket housing portion 52 in which the socket 50 is mounted. In the present embodiment, the socket 50 is made of a material having high thermal conductivity, such as a porcelain, and has a heat sink function.
　筐体５１の下面は開口を有し、この開口に保護用のガラス板５５が装着されている。筐体５１とガラス板５５によって略閉鎖された空間が形成される。反射鏡５３は、筐体５１の内側に且つ筐体５１より所定の間隔にて配置される。反射鏡５３は、下側が開口された略箱形又は半卵形を有する。従って、反射鏡５３の下側に略箱形の反射空間５４が形成される。筐体５１と反射鏡５３の間に空気通路５６とソケット収納部５２が形成される。空気通路５６の一方の端部は、ソケット収納部５２に接続され、空気通路５６の他方の端部は、反射空間５４に接続されている。 The lower surface of the housing 51 has an opening, and a protective glass plate 55 is attached to the opening. A substantially closed space is formed by the casing 51 and the glass plate 55. The reflecting mirror 53 is disposed inside the casing 51 and at a predetermined interval from the casing 51. The reflecting mirror 53 has a substantially box shape or a semi-oval shape with an open bottom. Accordingly, a substantially box-shaped reflection space 54 is formed below the reflecting mirror 53. An air passage 56 and a socket housing portion 52 are formed between the housing 51 and the reflecting mirror 53. One end of the air passage 56 is connected to the socket housing portion 52, and the other end of the air passage 56 is connected to the reflection space 54.
　反射鏡５３は孔５３ａを有する。この孔５３ａを介して、反射空間５４とソケット収納部５２が接続される。ＬＥＤランプ１０は、反射鏡５３の孔５３ａに貫通して配置されている。ＬＥＤランプ１０の中心軸線は、水平であってもよいが、水平線に対して所定の傾斜角を有してもよい。 The reflecting mirror 53 has a hole 53a. The reflective space 54 and the socket storage portion 52 are connected through the hole 53a. The LED lamp 10 is disposed through the hole 53a of the reflecting mirror 53. The central axis of the LED lamp 10 may be horizontal, but may have a predetermined inclination angle with respect to the horizontal line.
　ＬＥＤランプ１０は、図２Ｃに示すように、ＬＥＤ支持体１１、口金１３、冷却ファン１５及び冷却空気出口室２６を有する。更に、冷却空気出口室２６の端部に鍔部２９が装着されている。冷却ファン１５及びＬＥＤ支持体１１は、反射空間５４に配置され、冷却空気出口室２６と口金１３はソケット収納部５２に配置されている。本実施形態では、鍔部２９は反射鏡５３の孔５３ａの位置に配置されている。ＬＥＤランプ１０の口金１３はソケット５０に装着されている。冷却空気出口室２６はソケット収納部５２に直接空間的に接続されている。従って、冷却空気出口室２６から排出された空気は、ソケット収納部５２に排出される。特に、本実施形態では、冷却空気出口室２６から排出された空気は、鍔部２９によって、進路を変更し、ソケット収納部５２に導かれる。 The LED lamp 10 includes an LED support 11, a base 13, a cooling fan 15, and a cooling air outlet chamber 26, as shown in FIG. 2C. Further, a flange 29 is attached to the end of the cooling air outlet chamber 26. The cooling fan 15 and the LED support 11 are disposed in the reflection space 54, and the cooling air outlet chamber 26 and the base 13 are disposed in the socket housing portion 52. In the present embodiment, the flange portion 29 is disposed at the position of the hole 53 a of the reflecting mirror 53. The base 13 of the LED lamp 10 is attached to the socket 50. The cooling air outlet chamber 26 is directly and spatially connected to the socket housing portion 52. Accordingly, the air discharged from the cooling air outlet chamber 26 is discharged to the socket storage portion 52. In particular, in the present embodiment, the air discharged from the cooling air outlet chamber 26 is guided to the socket housing portion 52 by the flange portion 29 changing the route.
　本実施形態のＬＥＤ道路灯の内部の空気の流れを説明する。冷却ファン１５を回転させると、ファンの軸線方向に沿って冷却用空気流が形成される。冷却用空気は、ＬＥＤ支持体１１の貫通孔１１１（図２Ｃ）を通り、冷却空気出口室２６を経由し、ＬＥＤランプ１０の外部に排出される。冷却空気出口室２６から排出された冷却後の空気は、比較的温度が高い。しかしながら、本実施形態では、冷却空気出口室２６はソケット収納部５２に接続されている。冷却空気出口室２６から排出された空気は、ソケット５０の周囲に導かれる。ソケット５０はヒートシンクの機能を有する。従って、冷却後の空気は、ソケット５０に接触することによって、ソケット５０に熱を奪われ、冷却される。 The flow of air inside the LED road light of this embodiment will be described. When the cooling fan 15 is rotated, a cooling airflow is formed along the axial direction of the fan. The cooling air passes through the through hole 111 (FIG. 2C) of the LED support 11 and is discharged to the outside of the LED lamp 10 through the cooling air outlet chamber 26. The air after cooling discharged from the cooling air outlet chamber 26 has a relatively high temperature. However, in this embodiment, the cooling air outlet chamber 26 is connected to the socket housing portion 52. The air discharged from the cooling air outlet chamber 26 is guided around the socket 50. The socket 50 has a heat sink function. Accordingly, the air after cooling comes into contact with the socket 50 and is deprived of heat by the socket 50 to be cooled.
　冷却後の空気は、更に、ソケット収納部５２から空気通路５６を経由して、反射空間５４に戻る。冷却後の空気は、空気通路５６を流れる間に周囲と熱交換し、更に冷却される。こうして冷却された空気は、反射空間５４に戻り、冷却ファン１５によってＬＥＤ支持体１１の貫通孔１１１（図２Ｃ）に導かれる。本実施形態では、冷却ファン１５、ＬＥＤ支持体１１の貫通孔１１１（図２Ｃ）、冷却空気出口室２６、ソケット収納部５２、空気通路５６及び反射空間５４は閉ループの空気循環経路を構成している。 The cooled air further returns from the socket housing 52 to the reflection space 54 via the air passage 56. The cooled air exchanges heat with the surroundings while flowing through the air passage 56 and is further cooled. The air thus cooled returns to the reflection space 54 and is guided to the through hole 111 (FIG. 2C) of the LED support 11 by the cooling fan 15. In the present embodiment, the cooling fan 15, the through hole 111 (FIG. 2C) of the LED support 11, the cooling air outlet chamber 26, the socket housing 52, the air passage 56 and the reflection space 54 constitute a closed loop air circulation path. Yes.
　本実施形態のＬＥＤ道路灯では、冷却空気出口室２６から排出された比較的高温の空気が直接冷却ファン１５に到達することはない。即ち、冷却ファン１５に空気通路５６を介して比較的低温の空気を供給することができる。従って、冷却ファン１５による冷却効果を高めることができる。更に、冷却ファン１５及びモータの高温化を回避することができる。従って、冷却ファンのモータの潤滑油の劣化に起因する冷却ファンの性能低下を回避することができる。 In the LED road light of the present embodiment, the relatively hot air discharged from the cooling air outlet chamber 26 does not reach the cooling fan 15 directly. That is, relatively low temperature air can be supplied to the cooling fan 15 via the air passage 56. Therefore, the cooling effect by the cooling fan 15 can be enhanced. Furthermore, the high temperature of the cooling fan 15 and the motor can be avoided. Accordingly, it is possible to avoid a decrease in performance of the cooling fan due to deterioration of the lubricating oil of the motor of the cooling fan.
　図５Ｂを参照して、本実施形態によるＬＥＤ道路灯の他の例の構造を詳細に説明する。本実施形態では、ＬＥＤランプ１０は、図２Ａ、及び、図２Ｂに示すように、ＬＥＤ支持体１１、口金１３、冷却ファン１５及び冷却空気出口室２６を有する。本実施形態では、図５Ｂに示した実施形態と比較して、冷却空気出口室２６に鍔部２９が設けられていない点が異なる。 With reference to FIG. 5B, the structure of another example of the LED road light according to the present embodiment will be described in detail. In this embodiment, the LED lamp 10 has the LED support body 11, the nozzle | cap | die 13, the cooling fan 15, and the cooling air exit chamber 26, as shown to FIG. 2A and FIG. 2B. This embodiment is different from the embodiment shown in FIG. 5B in that the cooling air outlet chamber 26 is not provided with the flange portion 29.
　ＬＥＤランプ１０は、反射鏡５３の孔５３ａに貫通して配置されている。冷却ファン１５及びＬＥＤ支持体１１は、反射空間５４に配置され、冷却空気出口室２６と口金１３はソケット収納部５２に配置されている。本実施形態では、ＬＥＤ支持体１１と冷却空気出口室２６の境界は反射鏡５３の孔５３ａの位置に配置されている。ＬＥＤランプ１０の口金１３はソケット５０に装着されている。冷却空気出口室２６はソケット収納部５２に直接空間的に接続されている。従って、冷却空気出口室２６から排出された空気は、ソケット収納部５２に排出される。 The LED lamp 10 is disposed through the hole 53a of the reflecting mirror 53. The cooling fan 15 and the LED support 11 are disposed in the reflection space 54, and the cooling air outlet chamber 26 and the base 13 are disposed in the socket housing portion 52. In the present embodiment, the boundary between the LED support 11 and the cooling air outlet chamber 26 is disposed at the position of the hole 53 a of the reflecting mirror 53. The base 13 of the LED lamp 10 is attached to the socket 50. The cooling air outlet chamber 26 is directly and spatially connected to the socket housing portion 52. Accordingly, the air discharged from the cooling air outlet chamber 26 is discharged to the socket storage portion 52.
　本実施形態のＬＥＤ道路灯の内部の空気の流れは、図５Ａの例と同様である。本実施形態では、冷却ファン１５、ＬＥＤ支持体１１の貫通孔１１１（図２Ａ）、冷却空気出口室２６、ソケット収納部５２及び空気通路５６は閉ループの空気循環経路を構成している。 The flow of air inside the LED road light of this embodiment is the same as the example of FIG. 5A. In the present embodiment, the cooling fan 15, the through hole 111 (FIG. 2A) of the LED support 11, the cooling air outlet chamber 26, the socket housing portion 52, and the air passage 56 constitute a closed loop air circulation path.
　本実施形態のＬＥＤ道路灯では、図５ＡのＬＥＤ道路灯と同様に、冷却空気出口室２６から排出された比較的高温の空気が直接冷却ファン１５に到達することはない。即ち、冷却ファン１５に空気通路５６を介して比較的低温の空気を供給することができる。従って、冷却ファン１５による冷却効果を高めることができる。更に、冷却ファン１５及びモータの高温化を回避することができる。従って、冷却ファンのモータの潤滑油の劣化に起因する冷却ファンの性能低下を回避することができる。 In the LED road light of this embodiment, the relatively high temperature air discharged from the cooling air outlet chamber 26 does not reach the cooling fan 15 directly like the LED road light of FIG. 5A. That is, relatively low temperature air can be supplied to the cooling fan 15 via the air passage 56. Therefore, the cooling effect by the cooling fan 15 can be enhanced. Furthermore, the high temperature of the cooling fan 15 and the motor can be avoided. Accordingly, it is possible to avoid a decrease in performance of the cooling fan due to deterioration of the lubricating oil of the motor of the cooling fan.
　図６Ａを参照して、本実施形態によるＬＥＤ投光器の例の構造を詳細に説明する。ＬＥＤ投光器は、筐体６１と、反射鏡６３と、ＬＥＤランプ１０とを有する。筐体６１はソケット収納部６２を有し、そこにソケット６０が装着されている。本実施形態では、ソケット６０は、熱伝導性が高い材料、例えば、磁器、等によって構成され、ヒートシンクの機能を有する。 With reference to FIG. 6A, the structure of the example of the LED projector by this embodiment is demonstrated in detail. The LED projector includes a housing 61, a reflecting mirror 63, and an LED lamp 10. The housing 61 has a socket housing portion 62 to which a socket 60 is attached. In the present embodiment, the socket 60 is made of a material having high thermal conductivity, such as a porcelain, and has a heat sink function.
　筐体６１は、一端に開口を有する略円筒形状を有する。この開口に反射鏡６３が装着されている。筐体６１の中心軸線と反射鏡６３の中心軸線は整合している。筐体６１と反射鏡６３によって略閉鎖された空間が形成される。本実施形態では、この空間がソケット収納部６２となる。反射鏡６３は、断面が放物線状の回転放物面状等であってよい。反射鏡６３によって略半球状の反射空間６４が形成される。更に、反射鏡６３の端面に保護用のガラス板６５が装着されている。従って、反射空間６４は略半球状の密閉空間となる。 The housing 61 has a substantially cylindrical shape having an opening at one end. A reflecting mirror 63 is attached to this opening. The central axis of the casing 61 and the central axis of the reflecting mirror 63 are aligned. A substantially closed space is formed by the casing 61 and the reflecting mirror 63. In the present embodiment, this space becomes the socket housing portion 62. The reflecting mirror 63 may be a rotating paraboloid having a parabolic cross section. The reflecting mirror 63 forms a substantially hemispherical reflecting space 64. Further, a protective glass plate 65 is attached to the end face of the reflecting mirror 63. Therefore, the reflection space 64 is a substantially hemispherical sealed space.
　反射鏡６３は孔６３ａを有する。この孔６３ａを介して、反射空間６４とソケット収納部６２が接続される。ＬＥＤランプ１０は、反射鏡６３の孔６３ａに貫通して配置されている。ＬＥＤランプ１０の中心軸線と反射鏡６３の中心軸線は整合している。 The reflecting mirror 63 has a hole 63a. The reflective space 64 and the socket storage portion 62 are connected via the hole 63a. The LED lamp 10 is disposed so as to penetrate the hole 63 a of the reflecting mirror 63. The central axis of the LED lamp 10 and the central axis of the reflecting mirror 63 are aligned.
　ＬＥＤランプ１０は、図２Ａ又は図２Ｂに示すように、ＬＥＤ支持体１１、口金１３、冷却ファン１５及び冷却空気出口室２６を有する。冷却ファン１５及びＬＥＤ支持体１１は、反射空間６４に配置され、冷却空気出口室２６と口金１３はソケット収納部６２に配置されている。本実施形態では、ＬＥＤ支持体１１と冷却空気出口室２６の境界は反射鏡６３の孔６３ａの位置に配置されている。ＬＥＤランプ１０の口金１３はソケット６０に装着されている。冷却空気出口室２６はソケット収納部６２に直接空間的に接続されている。従って、冷却空気出口室２６から排出された空気は、ソケット収納部６２に排出される。 The LED lamp 10 includes an LED support 11, a base 13, a cooling fan 15, and a cooling air outlet chamber 26 as shown in FIG. 2A or 2B. The cooling fan 15 and the LED support 11 are disposed in the reflection space 64, and the cooling air outlet chamber 26 and the base 13 are disposed in the socket housing portion 62. In the present embodiment, the boundary between the LED support 11 and the cooling air outlet chamber 26 is disposed at the position of the hole 63 a of the reflecting mirror 63. The base 13 of the LED lamp 10 is attached to the socket 60. The cooling air outlet chamber 26 is spatially connected directly to the socket housing portion 62. Accordingly, the air discharged from the cooling air outlet chamber 26 is discharged to the socket housing portion 62.
　本実施形態のＬＥＤ投光器の内部の空気の流れを説明する。冷却ファン１５を回転させると、ファンの軸線方向に沿って冷却用空気流が形成される。冷却用空気は、ＬＥＤ支持体１１の貫通孔１１１（図２Ａ）を通り、冷却空気出口室２６を経由し、ＬＥＤランプ１０の外部に排出される。冷却空気出口室２６から排出された冷却後の空気は、比較的温度が高い。しかしながら、本実施形態では、冷却空気出口室２６はソケット収納部６２に接続されている。冷却空気出口室２６から排出された空気は、ソケット６０の周囲に導かれる。ソケット６０はヒートシンクの機能を有する。従って、冷却後の空気は、ソケット６０に接触することによって、ソケット６０に熱を奪われ、冷却される。本実施形態では、反射空間６４、冷却ファン１５、ＬＥＤ支持体１１の貫通孔１１１（図２Ａ）、冷却空気出口室２６、及び、ソケット収納部６２は空気循環経路を構成している。 The flow of air inside the LED projector of this embodiment will be described. When the cooling fan 15 is rotated, a cooling airflow is formed along the axial direction of the fan. The cooling air passes through the through hole 111 (FIG. 2A) of the LED support 11 and is discharged to the outside of the LED lamp 10 through the cooling air outlet chamber 26. The air after cooling discharged from the cooling air outlet chamber 26 has a relatively high temperature. However, in the present embodiment, the cooling air outlet chamber 26 is connected to the socket housing portion 62. The air discharged from the cooling air outlet chamber 26 is guided around the socket 60. The socket 60 has a heat sink function. Accordingly, the air after cooling comes into contact with the socket 60 and is deprived of heat by the socket 60 to be cooled. In the present embodiment, the reflection space 64, the cooling fan 15, the through hole 111 (FIG. 2A) of the LED support 11, the cooling air outlet chamber 26, and the socket housing portion 62 constitute an air circulation path.
　本実施形態のＬＥＤ投光器では、冷却空気出口室２６から排出された比較的高温の空気が直接冷却ファン１５に到達することはない。即ち、冷却ファン１５に比較的低温の空気を供給することができる。従って、冷却ファン１５による冷却効果を高めることができる。更に、冷却ファン１５及びモータの高温化を回避することができる。従って、冷却ファンのモータの潤滑油の劣化に起因する冷却ファンの性能低下を回避することができる。 In the LED projector of this embodiment, the relatively high temperature air discharged from the cooling air outlet chamber 26 does not reach the cooling fan 15 directly. That is, relatively low temperature air can be supplied to the cooling fan 15. Therefore, the cooling effect by the cooling fan 15 can be enhanced. Furthermore, the high temperature of the cooling fan 15 and the motor can be avoided. Accordingly, it is possible to avoid a decrease in performance of the cooling fan due to deterioration of the lubricating oil of the motor of the cooling fan.
　図６Ｂを参照して、本実施形態によるＬＥＤ投光器の他の例の構造を詳細に説明する。本実施形態では、ＬＥＤランプ１０は、図２Ｃに示すように、ＬＥＤ支持体１１、口金１３、冷却ファン１５及び冷却空気出口室２６を有する。更に、冷却空気出口室２６の端部に鍔部２９が装着されている。本実施形態では、反射鏡６３の端面に保護用のガラス板が装着されていない。従って、反射空間６４は外部空間に直接空間的に接続されており、略半球状の開放空間となる。 The structure of another example of the LED projector according to the present embodiment will be described in detail with reference to FIG. 6B. In this embodiment, the LED lamp 10 has the LED support body 11, the nozzle | cap | die 13, the cooling fan 15, and the cooling air exit chamber 26, as shown to FIG. 2C. Further, a flange 29 is attached to the end of the cooling air outlet chamber 26. In this embodiment, a protective glass plate is not attached to the end face of the reflecting mirror 63. Therefore, the reflection space 64 is directly connected to the external space and becomes a substantially hemispherical open space.
　ＬＥＤランプ１０は、反射鏡６３の孔６３ａに貫通して配置されている。冷却ファン１５及びＬＥＤ支持体１１は、反射空間６４に配置され、冷却空気出口室２６と口金１３はソケット収納部６２に配置されている。本実施形態では、鍔部２９は反射鏡６３の孔６３ａの位置に配置されている。ＬＥＤランプ１０の口金１３はソケット６０に装着されている。冷却空気出口室２６はソケット収納部６２に直接空間的に接続されている。従って、冷却空気出口室２６から排出された空気は、ソケット収納部６２に排出される。 The LED lamp 10 is disposed through the hole 63a of the reflecting mirror 63. The cooling fan 15 and the LED support 11 are disposed in the reflection space 64, and the cooling air outlet chamber 26 and the base 13 are disposed in the socket housing portion 62. In the present embodiment, the flange portion 29 is disposed at the position of the hole 63 a of the reflecting mirror 63. The base 13 of the LED lamp 10 is attached to the socket 60. The cooling air outlet chamber 26 is spatially connected directly to the socket housing portion 62. Accordingly, the air discharged from the cooling air outlet chamber 26 is discharged to the socket housing portion 62.
　本実施形態のＬＥＤ投光器の内部の空気の流れを説明する。冷却ファン１５を回転させると、ファンの軸線方向に沿って冷却用空気流が形成される。冷却用空気は、ＬＥＤ支持体１１の貫通孔１１１（図２Ｃ）を通り、冷却空気出口室２６を経由し、ＬＥＤランプ１０の外部に排出される。冷却空気出口室２６から排出された冷却後の空気は、比較的温度が高い。しかしながら、本実施形態では、冷却空気出口室２６はソケット収納部６２に接続されている。冷却空気出口室２６から排出された空気は、ソケット６０の周囲に導かれる。ソケット６０はヒートシンクの機能を有する。従って、冷却後の空気は、ソケット６０に接触することによって、ソケット６０に熱を奪われ、冷却される。本実施形態では、外部空間、反射空間６４、冷却ファン１５、ＬＥＤ支持体１１の貫通孔１１１（図２Ｃ）、冷却空気出口室２６、及び、ソケット収納部６２は空気循環経路を構成している。 The flow of air inside the LED projector of this embodiment will be described. When the cooling fan 15 is rotated, a cooling airflow is formed along the axial direction of the fan. The cooling air passes through the through hole 111 (FIG. 2C) of the LED support 11 and is discharged to the outside of the LED lamp 10 through the cooling air outlet chamber 26. The air after cooling discharged from the cooling air outlet chamber 26 has a relatively high temperature. However, in the present embodiment, the cooling air outlet chamber 26 is connected to the socket housing portion 62. The air discharged from the cooling air outlet chamber 26 is guided around the socket 60. The socket 60 has a heat sink function. Accordingly, the air after cooling comes into contact with the socket 60 and is deprived of heat by the socket 60 to be cooled. In the present embodiment, the external space, the reflection space 64, the cooling fan 15, the through hole 111 (FIG. 2C) of the LED support 11, the cooling air outlet chamber 26, and the socket housing portion 62 constitute an air circulation path. .
　本実施形態のＬＥＤ投光器では、冷却空気出口室２６から排出された比較的高温の空気が直接冷却ファン１５に到達することはない。一方、冷却ファン１５に外部空間から比較的低温の空気を供給することができる。従って、冷却ファン１５による冷却効果を高めることができる。更に、冷却ファン１５及びモータの高温化を回避することができる。従って、冷却ファンのモータの潤滑油の劣化に起因する冷却ファンの性能低下を回避することができる。 In the LED projector of this embodiment, the relatively high temperature air discharged from the cooling air outlet chamber 26 does not reach the cooling fan 15 directly. On the other hand, relatively low temperature air can be supplied to the cooling fan 15 from the external space. Therefore, the cooling effect by the cooling fan 15 can be enhanced. Furthermore, the high temperature of the cooling fan 15 and the motor can be avoided. Accordingly, it is possible to avoid a decrease in performance of the cooling fan due to deterioration of the lubricating oil of the motor of the cooling fan.
　図６Ｃを参照して、本実施形態によるＬＥＤ投光器の例の構造を詳細に説明する。本実施形態のＬＥＤ投光器は、図６Ａに示した例と比較すると、筐体６１に空気孔６１ａが設けられ、反射鏡６３に空気孔６３ｂが設けられている点が異なる。それ以外の構成は、図６Ａに示した例と同様であってよい。 The structure of an example of the LED projector according to the present embodiment will be described in detail with reference to FIG. 6C. The LED projector of the present embodiment is different from the example shown in FIG. 6A in that an air hole 61a is provided in the casing 61 and an air hole 63b is provided in the reflecting mirror 63. Other configurations may be the same as the example shown in FIG. 6A.
　本実施形態のＬＥＤ投光器の内部の空気の流れを説明する。本実施形態では、ソケット収納部６２にて、ソケット６０に接触することによって冷却された空気は、筐体６１の空気孔６１ｂを介して外部に排出される。更に、反射空間６４には、反射鏡６３の空気孔６３ａを介して外部空間から比較的低温の空気が導入される。本実施形態では、外部空間、反射空間６４、冷却ファン１５、ＬＥＤ支持体１１の貫通孔１１１（図２Ａ）、冷却空気出口室２６、ソケット収納部６２、及び、外部空間は空気循環経路を構成している。 The flow of air inside the LED projector of this embodiment will be described. In the present embodiment, the air cooled by contacting the socket 60 in the socket housing portion 62 is discharged to the outside through the air hole 61 b of the housing 61. Further, relatively low temperature air is introduced into the reflecting space 64 from the external space through the air holes 63 a of the reflecting mirror 63. In the present embodiment, the external space, the reflective space 64, the cooling fan 15, the through hole 111 (FIG. 2A) of the LED support 11, the cooling air outlet chamber 26, the socket housing portion 62, and the external space constitute an air circulation path. is doing.
　本実施形態のＬＥＤ投光器では、冷却空気出口室２６から排出された比較的高温の空気が直接冷却ファン１５に到達することはない。一方、冷却ファン１５に外部空間からの比較的低温の空気を供給することができる。従って、冷却ファン１５による冷却効果を高めることができる。更に、冷却ファン１５及びモータの高温化を回避することができる。従って、冷却ファンのモータの潤滑油の劣化に起因する冷却ファンの性能低下を回避することができる。 In the LED projector of this embodiment, the relatively high temperature air discharged from the cooling air outlet chamber 26 does not reach the cooling fan 15 directly. On the other hand, relatively low temperature air from the external space can be supplied to the cooling fan 15. Therefore, the cooling effect by the cooling fan 15 can be enhanced. Furthermore, the high temperature of the cooling fan 15 and the motor can be avoided. Accordingly, it is possible to avoid a decrease in performance of the cooling fan due to deterioration of the lubricating oil of the motor of the cooling fan.
　図６Ｄを参照して、本実施形態によるＬＥＤ投光器の例の構造を詳細に説明する。本実施形態のＬＥＤ投光器は、図６Ｂに示した例と比較すると、筐体６１に空気孔６１ａが設けられている点が異なる。それ以外の構成は、図６Ｂに示した例と同様であってよい。 The structure of an example of the LED projector according to the present embodiment will be described in detail with reference to FIG. 6D. The LED projector according to the present embodiment is different from the example shown in FIG. 6B in that an air hole 61a is provided in the housing 61. The other configuration may be the same as the example shown in FIG. 6B.
　本実施形態のＬＥＤ投光器の内部の空気の流れを説明する。本実施形態では、ソケット収納部６２にて、ソケット６０に接触することによって冷却された空気は、筐体６１の空気孔６１ａを介して外部空間に排出される。更に、反射空間６４には、外部空間から直接比較的低温の空気が導入される。本実施形態では、外部空間、反射空間６４、冷却ファン１５、ＬＥＤ支持体１１の貫通孔１１１（図２Ｃ）、冷却空気出口室２６、ソケット収納部６２、及び、外部空間は空気循環経路を構成している。 The flow of air inside the LED projector of this embodiment will be described. In the present embodiment, the air cooled by contacting the socket 60 in the socket housing portion 62 is discharged to the external space through the air hole 61 a of the housing 61. Further, relatively low temperature air is directly introduced into the reflection space 64 from the external space. In the present embodiment, the external space, the reflective space 64, the cooling fan 15, the through hole 111 (FIG. 2C) of the LED support 11, the cooling air outlet chamber 26, the socket housing portion 62, and the external space constitute an air circulation path. is doing.
　本実施形態のＬＥＤ投光器では、冷却空気出口室２６から排出された比較的高温の空気が直接冷却ファン１５に到達することはない。一方、冷却ファン１５に外部空間からの比較的低温の空気を供給することができる。従って、冷却ファン１５による冷却効果を高めることができる。更に、冷却ファン１５及びモータの高温化を回避することができる。従って、冷却ファンのモータの潤滑油の劣化に起因する冷却ファンの性能低下を回避することができる。 In the LED projector of this embodiment, the relatively high temperature air discharged from the cooling air outlet chamber 26 does not reach the cooling fan 15 directly. On the other hand, relatively low temperature air from the external space can be supplied to the cooling fan 15. Therefore, the cooling effect by the cooling fan 15 can be enhanced. Furthermore, the high temperature of the cooling fan 15 and the motor can be avoided. Accordingly, it is possible to avoid a decrease in performance of the cooling fan due to deterioration of the lubricating oil of the motor of the cooling fan.
　図６Ｅを参照して、本実施形態によるＬＥＤ投光器の例の構造を詳細に説明する。ＬＥＤ投光器は、筐体６１と、反射鏡６３と、ＬＥＤランプ１０とを有する。筐体６１はソケット収納部６２を有し、そこにソケット６０が装着されている。本実施形態では、ソケット６０は、熱伝導性が高い材料、例えば、磁器、等によって構成され、ヒートシンクの機能を有する。 With reference to FIG. 6E, the structure of the example of the LED projector by this embodiment is demonstrated in detail. The LED projector includes a housing 61, a reflecting mirror 63, and an LED lamp 10. The housing 61 has a socket housing portion 62 to which a socket 60 is attached. In the present embodiment, the socket 60 is made of a material having high thermal conductivity, such as a porcelain, and has a heat sink function.
　筐体６１は、一端に開口を有する略円筒形状の円筒部６１Ａと、この開口に接続された略半球状の半球部６１Ｂを有する。半球部６１Ｂの開口に保護用のガラス板６５が装着されている。反射鏡６３は、筐体６１の半球部６１Ｂの内側に且つ筐体６１の半球部６１Ｂより所定の間隔にて配置される。筐体６１の中心軸線と反射鏡６３の中心軸線は整合している。反射鏡６３は、断面が放物線状の回転放物面状等であってよい。反射鏡６３によって略半球状の反射空間６４が形成される。筐体６１と反射鏡６３の間に空気通路６６とソケット収納部６２が形成される。反射鏡６３の縁に、空気通路６６と反射空間６４を接続する空気孔６３ｂが設けられている。空気通路６６の一方の端部は、ソケット収納部６２に接続され、空気通路６６の他方の端部は、反射空間６４に接続されている。 The housing 61 has a substantially cylindrical part 61A having an opening at one end, and a substantially hemispherical hemisphere part 61B connected to the opening. A protective glass plate 65 is attached to the opening of the hemispherical portion 61B. The reflecting mirror 63 is arranged inside the hemispherical part 61B of the casing 61 and at a predetermined interval from the hemispherical part 61B of the casing 61. The central axis of the casing 61 and the central axis of the reflecting mirror 63 are aligned. The reflecting mirror 63 may be a rotating paraboloid having a parabolic cross section. The reflecting mirror 63 forms a substantially hemispherical reflecting space 64. An air passage 66 and a socket housing portion 62 are formed between the housing 61 and the reflecting mirror 63. An air hole 63 b that connects the air passage 66 and the reflection space 64 is provided at the edge of the reflecting mirror 63. One end of the air passage 66 is connected to the socket housing portion 62, and the other end of the air passage 66 is connected to the reflection space 64.
　ＬＥＤランプ１０は、図２Ａ又は図２Ｂに示すように、ＬＥＤ支持体１１、口金１３、冷却ファン１５及び冷却空気出口室２６を有する。冷却ファン１５及びＬＥＤ支持体１１は、反射空間６４に配置され、冷却空気出口室２６と口金１３はソケット収納部６２に配置されている。本実施形態では、ＬＥＤ支持体１１と冷却空気出口室２６の境界は反射鏡６３の孔６３ａの位置に配置されている。ＬＥＤランプ１０の口金１３はソケット６０に装着されている。冷却空気出口室２６はソケット収納部６２に直接空間的に接続されている。従って、冷却空気出口室２６から排出された空気は、ソケット収納部６２に排出される。 The LED lamp 10 includes an LED support 11, a base 13, a cooling fan 15, and a cooling air outlet chamber 26 as shown in FIG. 2A or 2B. The cooling fan 15 and the LED support 11 are disposed in the reflection space 64, and the cooling air outlet chamber 26 and the base 13 are disposed in the socket housing portion 62. In the present embodiment, the boundary between the LED support 11 and the cooling air outlet chamber 26 is disposed at the position of the hole 63 a of the reflecting mirror 63. The base 13 of the LED lamp 10 is attached to the socket 60. The cooling air outlet chamber 26 is spatially connected directly to the socket housing portion 62. Accordingly, the air discharged from the cooling air outlet chamber 26 is discharged to the socket housing portion 62.
　本実施形態のＬＥＤ投光器の内部の空気の流れを説明する。冷却ファン１５を回転させると、ファンの軸線方向に沿って冷却用空気流が形成される。冷却用空気は、ＬＥＤ支持体１１の貫通孔１１１（図２Ａ）を通り、冷却空気出口室２６を経由し、ＬＥＤランプ１０の外部に排出される。冷却空気出口室２６から排出された冷却後の空気は、比較的温度が高い。しかしながら、本実施形態では、冷却空気出口室２６はソケット収納部６２に接続されている。冷却空気出口室２６から排出された空気は、ソケット６０の周囲に導かれる。ソケット６０はヒートシンクの機能を有する。従って、冷却後の空気は、ソケット６０に接触することによって、ソケット６０に熱を奪われ、冷却される。 The flow of air inside the LED projector of this embodiment will be described. When the cooling fan 15 is rotated, a cooling airflow is formed along the axial direction of the fan. The cooling air passes through the through hole 111 (FIG. 2A) of the LED support 11 and is discharged to the outside of the LED lamp 10 through the cooling air outlet chamber 26. The air after cooling discharged from the cooling air outlet chamber 26 has a relatively high temperature. However, in the present embodiment, the cooling air outlet chamber 26 is connected to the socket housing portion 62. The air discharged from the cooling air outlet chamber 26 is guided around the socket 60. The socket 60 has a heat sink function. Accordingly, the air after cooling comes into contact with the socket 60 and is deprived of heat by the socket 60 to be cooled.
　冷却後の空気は、更に、ソケット収納部６２から空気通路６６を経由して、反射空間６４に戻る。冷却後の空気は、空気通路６６を流れる間に周囲と熱交換し、更に冷却される。こうして冷却された空気は、反射空間６４に戻り、冷却ファン１５によってＬＥＤ支持体１１の貫通孔１１１に導かれる。本実施形態では、冷却ファン１５、ＬＥＤ支持体１１の貫通孔１１１（図２Ａ）、冷却空気出口室２６、ソケット収納部６２、空気通路６６及び反射空間６４は閉ループの空気循環経路を構成している。 The cooled air further returns from the socket housing 62 to the reflection space 64 via the air passage 66. The cooled air exchanges heat with the surroundings while flowing through the air passage 66 and is further cooled. The air thus cooled returns to the reflection space 64 and is guided to the through-hole 111 of the LED support 11 by the cooling fan 15. In the present embodiment, the cooling fan 15, the through hole 111 (FIG. 2A) of the LED support 11, the cooling air outlet chamber 26, the socket housing portion 62, the air passage 66 and the reflection space 64 constitute a closed loop air circulation path. Yes.
　本実施形態のＬＥＤ投光器では、冷却空気出口室２６から排出された比較的高温の空気が直接冷却ファン１５に到達することはない。即ち、冷却ファン１５に空気通路６６を介して比較的低温の空気を供給することができる。従って、冷却ファン１５による冷却効果を高めることができる。更に、冷却ファン１５及びモータの高温化を回避することができる。従って、冷却ファンのモータの潤滑油の劣化に起因する冷却ファンの性能低下を回避することができる。 In the LED projector of this embodiment, the relatively high temperature air discharged from the cooling air outlet chamber 26 does not reach the cooling fan 15 directly. That is, relatively low temperature air can be supplied to the cooling fan 15 via the air passage 66. Therefore, the cooling effect by the cooling fan 15 can be enhanced. Furthermore, the high temperature of the cooling fan 15 and the motor can be avoided. Accordingly, it is possible to avoid a decrease in performance of the cooling fan due to deterioration of the lubricating oil of the motor of the cooling fan.
　図６Ｆを参照して、本実施形態によるＬＥＤ投光器の他の例の構造を詳細に説明する。本実施形態では、ＬＥＤランプ１０は、図２Ｃに示すように、ＬＥＤ支持体１１、口金１３、冷却ファン１５及び冷却空気出口室２６を有する。更に、冷却空気出口室２６の端部に鍔部２９が装着されている。本実施形態では、筐体６１の端面に保護用のガラス板が装着されていない。従って、反射空間６４は外部空間に直接空間的に接続されており、略半球状の開放空間となる。また空気通路６６は外部空間に直接空間的に接続されている。 With reference to FIG. 6F, the structure of another example of the LED projector according to the present embodiment will be described in detail. In this embodiment, the LED lamp 10 has the LED support body 11, the nozzle | cap | die 13, the cooling fan 15, and the cooling air exit chamber 26, as shown to FIG. 2C. Further, a flange 29 is attached to the end of the cooling air outlet chamber 26. In this embodiment, a protective glass plate is not attached to the end surface of the housing 61. Therefore, the reflection space 64 is directly connected to the external space and becomes a substantially hemispherical open space. The air passage 66 is directly connected to the external space.
　ＬＥＤランプ１０は、反射鏡６３の孔６３ａに貫通して配置されている。冷却ファン１５及びＬＥＤ支持体１１は、反射空間６４に配置され、冷却空気出口室２６と口金１３はソケット収納部６２に配置されている。本実施形態では、鍔部２９は反射鏡６３の孔６３ａの位置に配置されている。ＬＥＤランプ１０の口金１３はソケット６０に装着されている。冷却空気出口室２６はソケット収納部６２に直接空間的に接続されている。従って、冷却空気出口室２６から排出された空気は、ソケット収納部６２に排出される。 The LED lamp 10 is disposed through the hole 63a of the reflecting mirror 63. The cooling fan 15 and the LED support 11 are disposed in the reflection space 64, and the cooling air outlet chamber 26 and the base 13 are disposed in the socket housing portion 62. In the present embodiment, the flange portion 29 is disposed at the position of the hole 63 a of the reflecting mirror 63. The base 13 of the LED lamp 10 is attached to the socket 60. The cooling air outlet chamber 26 is spatially connected directly to the socket housing portion 62. Accordingly, the air discharged from the cooling air outlet chamber 26 is discharged to the socket housing portion 62.
　本実施形態のＬＥＤ投光器の内部の空気の流れを説明する。本実施形態では、ソケット収納部６２にて、ソケット６０に接触することによって冷却された空気は、空気通路６６を介して外部空間に排出される。更に、反射空間６４には、外部空間から直接比較的低温の空気が導入される。本実施形態では、外部空間、反射空間６４、冷却ファン１５、ＬＥＤ支持体１１の貫通孔１１１（図２Ｃ）、冷却空気出口室２６、ソケット収納部６２、空気通路６６、及び、外部空間は空気循環経路を構成している。 The flow of air inside the LED projector of this embodiment will be described. In the present embodiment, the air cooled by contacting the socket 60 in the socket housing portion 62 is discharged to the external space via the air passage 66. Further, relatively low temperature air is directly introduced into the reflection space 64 from the external space. In the present embodiment, the external space, the reflective space 64, the cooling fan 15, the through hole 111 (FIG. 2C) of the LED support 11, the cooling air outlet chamber 26, the socket housing portion 62, the air passage 66, and the external space are air. It constitutes a circulation path.
　本実施形態のＬＥＤ投光器では、冷却空気出口室２６から排出された比較的高温の空気が直接冷却ファン１５に到達することはない。即ち、冷却ファン１５に外部空間から比較的低温の空気を供給することができる。従って、冷却ファン１５による冷却効果を高めることができる。更に、冷却ファン１５及びモータの高温化を回避することができる。従って、冷却ファンのモータの潤滑油の劣化に起因する冷却ファンの性能低下を回避することができる。 In the LED projector of this embodiment, the relatively high temperature air discharged from the cooling air outlet chamber 26 does not reach the cooling fan 15 directly. That is, relatively low temperature air can be supplied to the cooling fan 15 from the external space. Therefore, the cooling effect by the cooling fan 15 can be enhanced. Furthermore, the high temperature of the cooling fan 15 and the motor can be avoided. Accordingly, it is possible to avoid a decrease in performance of the cooling fan due to deterioration of the lubricating oil of the motor of the cooling fan.
　以上、本実施形態に係るＬＥＤランプ及びそれを使用する照明器具について説明したが、これらは例示であって、本発明の範囲を制限するものではない。当業者が、本実施形態に対して容易になしえる追加・削除・変更・改良等は、本発明の範囲内である。本発明の技術的範囲は、添付の特許請求の記載によって定められる。 As mentioned above, although the LED lamp concerning this embodiment and the lighting fixture which uses it were demonstrated, these are illustrations and do not restrict | limit the scope of the present invention. Additions, deletions, changes, improvements, and the like that can be easily made by those skilled in the art with respect to the present embodiment are within the scope of the present invention. The technical scope of the present invention is defined by the appended claims.
１０…ＬＥＤランプ、１１…ＬＥＤ支持体、１３…口金、１５…冷却ファン、１９Ａ、１９Ｂ…フランジ板、２１…支持板、２３…絶縁体、２５…支柱、２６…冷却空気出口室、２７…空気流分散部材、２９…鍔部、３０…ＬＥＤ、３０Ａ…ＬＥＤ素子、３０Ｂ…基板、５０…ソケット、５１…筐体、５２…ソケット収納部、５３…反射鏡、５４…反射空間、５５…ガラス板、５６…空気通路、５７…ポール、６０…ソケット、６１…筐体、６１ａ…空気孔、６２…ソケット収納部、６３…反射鏡、６３ａ…孔、６３ｂ…空気孔、６４…反射空間、６５…ガラス板、６６…空気通路、６７…アーム、１１１…貫通孔、１１３…フィン DESCRIPTION OF SYMBOLS 10 ... LED lamp, 11 ... LED support body, 13 ... Base, 15 ... Cooling fan, 19A, 19B ... Flange plate, 21 ... Support plate, 23 ... Insulator, 25 ... Strut, 26 ... Cooling air outlet chamber, 27 ... Air flow dispersion member, 29 ... collar, 30 ... LED, 30A ... LED element, 30B ... substrate, 50 ... socket, 51 ... housing, 52 ... socket housing, 53 ... reflector, 54 ... reflection space, 55 ... Glass plate 56 ... Air passage 57 ... Pole 60 ... Socket 61 ... Case 61a ... Air hole 62 ... Socket housing part 63 ... Reflector 63a ... Hole 63b ... Air hole 64 ... Reflection space , 65 ... Glass plate, 66 ... Air passage, 67 ... Arm, 111 ... Through-hole, 113 ... Fin

Claims (16)

  1. 　軸線方向に沿って形成された貫通孔を有する柱状のＬＥＤ支持体と、該ＬＥＤ支持体の側面に装着されたＬＥＤと、前記ＬＥＤ支持体の第１の端部の側に設けられた冷却ファンと、前記ＬＥＤ支持体の第２の端部の側に設けられた口金と、前記ＬＥＤ支持体の第２の端部と前記口金の間に形成された冷却空気出口室と、を有し、
    　前記冷却ファンからの冷却用空気は、前記貫通孔の第１の開口から前記貫通孔に入り、前記貫通孔の第２の開口から出て、前記冷却空気出口室を経由して外部に導かれるように構成されていることを特徴とするＬＥＤランプ。     A columnar LED support having a through-hole formed along the axial direction, an LED mounted on a side surface of the LED support, and a cooling fan provided on the first end side of the LED support And a base provided on the second end side of the LED support, and a cooling air outlet chamber formed between the second end of the LED support and the base,
    Cooling air from the cooling fan enters the through hole from the first opening of the through hole, exits from the second opening of the through hole, and is guided to the outside through the cooling air outlet chamber. It is comprised so that the LED lamp characterized by the above-mentioned.
  2. 　請求項１記載のＬＥＤランプにおいて、
    　前記ＬＥＤ支持体の貫通孔に放熱用のフィンが設けられていることを特徴とするＬＥＤランプ。     The LED lamp according to claim 1, wherein
    An LED lamp, wherein a fin for heat dissipation is provided in a through hole of the LED support.
  3. 　請求項１又は２記載のＬＥＤランプにおいて、
    　前記冷却空気出口室には前記貫通孔の第２の開口から出た冷却用空気を半径方向外方に分散させる空気流分散部材が設けられていることを特徴とするＬＥＤランプ。     The LED lamp according to claim 1 or 2,
    The LED lamp, wherein the cooling air outlet chamber is provided with an air flow dispersion member that disperses the cooling air exiting from the second opening of the through hole radially outward.
  4. 　請求項１～３のいずれか１項記載のＬＥＤランプにおいて、
    　前記ＬＥＤ支持体の第２の端部には前記貫通孔の第２の開口から出た冷却用空気を半径方向外方に導くための鍔部が設けられていることを特徴とするＬＥＤランプ。     The LED lamp according to any one of claims 1 to 3,
    The LED lamp according to claim 1, wherein a second end portion of the LED support is provided with a flange portion for guiding the cooling air coming out from the second opening of the through hole outward in the radial direction.
  5. 　請求項１～４のいずれか１項記載のＬＥＤランプにおいて、
    　前記冷却ファンと前記ＬＥＤ支持体の第１の端部の間に断熱性材料によって形成された仕切り部材が設けられていることを特徴とするＬＥＤランプ。     The LED lamp according to any one of claims 1 to 4,
    A partition member formed of a heat insulating material is provided between the cooling fan and the first end of the LED support.
  6. 　請求項１～５のいずれか１項記載のＬＥＤランプにおいて、
    　前記冷却ファンは筐体に支持されており、該筐体は前記仕切り部材に装着されていることを特徴とするＬＥＤランプ。     The LED lamp according to any one of claims 1 to 5,
    The cooling fan is supported by a housing, and the housing is attached to the partition member.
  7. 　請求項１～６のいずれか１項記載のＬＥＤランプにおいて、
    　前記ＬＥＤ支持体の第２の端部と前記口金の間に支柱が設けられており、該支柱によって前記冷却空気出口室が形成されていることを特徴とするＬＥＤランプ。     The LED lamp according to any one of claims 1 to 6,
    The LED lamp is characterized in that a support column is provided between the second end of the LED support and the base, and the cooling air outlet chamber is formed by the support column.
  8. 　ＬＥＤ、冷却ファン及び口金を有するＬＥＤランプと、
    　反射空間を形成する反射鏡と、
    　前記ＬＥＤランプの口金が装着されたソケットと該ソケットを収納するソケット収納部を備えた筐体と、
    を有し、
    　前記反射鏡は前記反射空間と前記ソケット収納部とを接続する孔を有し、
    　前記ＬＥＤランプは、前記ＬＥＤ及び冷却ファンが前記反射空間内に配置され、前記口金が前記ソケット収納部に配置されるように、前記反射鏡の孔を貫通して配置され、
    　前記ＬＥＤランプにて前記冷却ファンによって生成された冷却用空気は前記口金に向けて流れ、前記ＬＥＤランプから排出された空気は前記ソケット収納部に導かれることを特徴とするＬＥＤ照明器具。     An LED lamp having an LED, a cooling fan and a base;
    A reflector that forms a reflective space;
    A socket provided with a socket to which the base of the LED lamp is mounted, and a socket housing portion for housing the socket;
    Have
    The reflecting mirror has a hole for connecting the reflecting space and the socket housing portion;
    The LED lamp is disposed through the hole of the reflecting mirror so that the LED and the cooling fan are disposed in the reflection space, and the base is disposed in the socket housing portion.
    Cooling air generated by the cooling fan in the LED lamp flows toward the base, and the air discharged from the LED lamp is guided to the socket housing portion.
  9. 　請求項８記載のＬＥＤ照明器具において、
    　前記ソケットはヒートシンクの機能を有し、前記ＬＥＤランプから排出された空気は前記ソケットに接触するように構成されていることを特徴とするＬＥＤ照明器具。     The LED lighting apparatus according to claim 8,
    The socket has a function of a heat sink, and the air exhausted from the LED lamp is configured to come into contact with the socket.
  10. 　請求項８又は９に記載のＬＥＤ照明器具において、
    　前記筐体と前記反射鏡の間に空気通路が形成され、前記空気通路の一方の端部は前記ソケット収納部に接続され、前記空気通路の他方の端部は前記反射空間に接続されており、前記空気通路と前記反射空間により閉ループの空気循環経路が構成されていることを特徴とするＬＥＤ照明器具。     The LED lighting apparatus according to claim 8 or 9,
    An air passage is formed between the casing and the reflecting mirror, one end of the air passage is connected to the socket housing portion, and the other end of the air passage is connected to the reflection space. The LED lighting apparatus is characterized in that a closed loop air circulation path is constituted by the air passage and the reflection space.
  11. 　請求項８から１０のいずれか１項に記載のＬＥＤ照明器具において、
    　前記筐体の下面は開口を有し、前記反射鏡の下面は開口を有し、前記反射鏡は前記筐体の内側に且つ前記筐体より所定の間隔にて配置されており、道路灯として使用されるように構成されていることを特徴とするＬＥＤ照明器具。     In the LED lighting fixture of any one of Claim 8 to 10,
    The lower surface of the housing has an opening, the lower surface of the reflecting mirror has an opening, and the reflecting mirror is arranged inside the housing and at a predetermined interval from the housing, and serves as a road lamp. An LED luminaire characterized by being configured to be used.
  12. 　請求項８から１０のいずれか１項に記載のＬＥＤ照明器具において、
    　前記反射鏡は回転放物線状に形成され、前記ＬＥＤランプの中心軸線が前記反射鏡の中心軸線に整合するように配置されており、投光器として使用されるように構成されていることを特徴とするＬＥＤ照明器具。     In the LED lighting fixture of any one of Claim 8 to 10,
    The reflecting mirror is formed in a parabolic shape, and is arranged so that a central axis of the LED lamp is aligned with a central axis of the reflecting mirror, and is configured to be used as a projector. LED lighting fixtures.
  13. 請求項８から１２のいずれか１項に記載のＬＥＤ照明器具において、
    前記ＬＥＤランプは、軸線方向に沿って形成された貫通孔を有する柱状のＬＥＤ支持体を有し、
    前記ＬＥＤは前記ＬＥＤ支持体の側面に装着され、
    前記冷却ファンは前記ＬＥＤ支持体の第１の端部の側に設けられ、
    前記口金は前記ＬＥＤ支持体の第２の端部の側に設けられ、
    前記ＬＥＤ支持体の第２の端部と前記口金の間に形成された冷却空気出口室とを有し、
    前記冷却ファンからの冷却用空気は、前記貫通孔の第１の開口から前記貫通孔に入り、前記貫通孔の第２の開口を経由して前記冷却空気出口室に導かれ、前記冷却空気出口室より排出されるように構成されていることを特徴とするＬＥＤ照明器具。     The LED lighting device according to any one of claims 8 to 12,
    The LED lamp has a columnar LED support having a through hole formed along an axial direction,
    The LED is mounted on a side surface of the LED support,
    The cooling fan is provided on the first end side of the LED support;
    The base is provided on the second end side of the LED support,
    A cooling air outlet chamber formed between the second end of the LED support and the base;
    Cooling air from the cooling fan enters the through-hole from the first opening of the through-hole, and is guided to the cooling air outlet chamber via the second opening of the through-hole. It is comprised so that it may discharge | emit from a room, The LED lighting fixture characterized by the above-mentioned.
  14. 　請求項１３に記載のＬＥＤ照明器具において、
    　前記冷却空気出口室には前記貫通孔の第２の開口から出た冷却用空気を半径方向外方に分散させる空気流分散部材が設けられていることを特徴とするＬＥＤ照明器具。     The LED lighting apparatus according to claim 13,
    The LED lighting apparatus according to claim 1, wherein the cooling air outlet chamber is provided with an air flow dispersion member that disperses the cooling air exiting from the second opening of the through hole radially outward.
  15. 　請求項１３に記載のＬＥＤ照明器具において、
    　前記ＬＥＤ支持体の端部には前記貫通孔の第２の開口から出た冷却用空気を前記口金の方向に導くための鍔部が設けられていることを特徴とするＬＥＤ照明器具。     The LED lighting apparatus according to claim 13,
    The LED lighting device according to claim 1, wherein an end portion of the LED support is provided with a flange portion for guiding cooling air from the second opening of the through hole toward the base.
  16. 　請求項１３に記載のＬＥＤ照明器具において、
    　前記ＬＥＤ支持体は前記反射空間に配置され、前記冷却空気出口室は前記ソケット収納部に配置されていることを特徴とするＬＥＤ照明器具。     The LED lighting apparatus according to claim 13,
    The LED lighting apparatus according to claim 1, wherein the LED support is disposed in the reflection space, and the cooling air outlet chamber is disposed in the socket housing portion.
PCT/JP2015/053196 2014-02-17 2015-02-05 Led lamp and illumination apparatus using same WO2015122340A1 (en)

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JP2014027154A JP5794440B2 (en) 2014-02-17 2014-02-17 Lighting fixture using LED lamp
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JP2014038253A JP5910893B2 (en) 2014-02-28 2014-02-28 LED lamp
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