US3784808A - Heat radiating device for illuminating apparatus - Google Patents

Heat radiating device for illuminating apparatus Download PDF

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Publication number
US3784808A
US3784808A US00282011A US3784808DA US3784808A US 3784808 A US3784808 A US 3784808A US 00282011 A US00282011 A US 00282011A US 3784808D A US3784808D A US 3784808DA US 3784808 A US3784808 A US 3784808A
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US
United States
Prior art keywords
heat radiating
radiating member
ground
illuminating apparatus
improvement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00282011A
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English (en)
Inventor
S Mori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikokuya Holdings Co Ltd
Original Assignee
Mori Denki Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mori Denki Manufacturing Co Ltd filed Critical Mori Denki Manufacturing Co Ltd
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Publication of US3784808A publication Critical patent/US3784808A/en
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Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S13/00—Non-electric lighting devices or systems employing a point-like light source; Non-electric lighting devices or systems employing a light source of unspecified shape
    • F21S13/02—Devices intended to be fixed, e.g. ceiling lamp, wall lamp
    • F21S13/10—Devices intended to be fixed, e.g. ceiling lamp, wall lamp with a standard, e.g. street lamp
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/08—Lighting devices intended for fixed installation with a standard
    • F21S8/085—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/08—Lighting devices intended for fixed installation with a standard
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • F21W2131/103—Outdoor lighting of streets or roads

Definitions

  • ABSTRACT A heat radiating device for use in an illuminating apparatus comprising a heat radiating member secured to a wall of a body of said apparatus and formed with end openings at the oppositeends thereof.
  • Air vent means adapted to establish air communication be tween the inside of said body and the atmosphere pass through the inside of the heat radiating member.
  • the present invention relates to a heat radiating device for use in an illuminating apparatus, particularly in an apparatus such as a street lamp which has a high power electric bulb therein and which adapted to be installed in the open air.
  • a street lamp is normally installed at the tip of a supporting post and positioned at a distance of about 6 to 8 meters above the ground. Since a high power electric bulb of about 400 to 700 watt is turned on in a body of such apparatus a very high temperature is created around said bulb. For examplewhen a 700 watt bulb is used a temperature of 300C or more has been experienced.
  • the present invention provides a heat radiating device for an illuminating apparatus comprising a heat radiating member secured to a wall of a body of said apparatus and formed with openings at the opposite ends thereof, and an air vent means adapted to establish air communication between the inside of said body and the atmosphere passing through the inside of said heat radiating member.
  • the main object of the present invention is to provide a heat radiating device for use in an illuminating apparatus which is adapted to forcibly radiate into the open atmosphere heat generated in said apparatus so as to increase the life of the electric bulb inside said apparatus.
  • Another object of the present invention is to provide a heat radiating device which is adapted to prevent the temperature rise of said apparatus itself so that the safety of the lamp means disposed therein may be highly increased.
  • a further object of the present invention is to provide a heat radiating device for use in an illuminating apparatus which is adapted to make the life of the electric bulb longer by'virture of the heat radiation obtained by the device of the present invention so that the cost required for substituting an electric bulb may be effectively reduced.
  • a further object of the present invention is to reduce the frequency the dangeous work of changing an electric bulb in an apparatus such as a street lamp which is secured to the top of a supporting post at a large height above the ground by increasing the life of the electric bulb as a result of the heat radiating effect obtained by the present invention.
  • a still further object of the present invention is to provide a heat radiating device for use in an illuminating apparatus wherein a body of said apparatus can be made of stainless steel which has a relatively low heat conductivity as compared with other metals usually employed in the prior art for the reason that, by virtue of providing the heat radiating device of the present invention on the apparatus, the temperature of the body of the apparatus may 'be kept in a lower range than the conventional body of the apparatus made of other metal such as ordinary steel or an aluminum alloy plate.
  • FIG. 1 is a side elevational view showing an illuminating apparatus provided with a heat radiating device of the present inveniton and secured at a distance above the ground to the tip of a supporting post.
  • FIG. 2 is an enlarged sectional view of the illuminating apparatus shown in FIG. 1.
  • FIG. 3 is an enlarged perspective view of the illuminating apparatus shown in FIG. 1, and
  • FIG. 4 is a sectional view of an illuminating apparatus provided with another embodiment of a heat radiating device of the present invention.
  • FIG. 1 there is shown a street lamp comprising an illuminating apparatus of the present invention, wherein the reference numeral 1 indicates a body housing of the apparatus made of a metal material, and at the lower portion of the body there is provided a globe 2 made of a hardened glass material/At one end of the body 1 there is formed a fitting portion 1a to which the tip of a supporting post 3 is fitted.
  • the reference numeral 4 indicates a heat radiating member which will be described in detail hereinafter.
  • the inside the body 1 is provided with a socket 5 to which is connected an electric wire (not shown) leading through the inside of the post 3, and in the socket 5 is mounted an electric bulb 6 in engagement therewith.
  • the reference numoral 7 indicates a reflector arranged to surround the upper side of the bulb 6.
  • the heat radiating member 4 is secured to the upper wall lb of the body 1 such that the longitudinally extending opposite sides of the member 4 are adhesively fixed to the exterior surface of the upper wall of the body 1. This can be done by any conventional means such as by welding, soldering or the like. At the opposite ends of the member 4, are formed end openings 4a and 4b respectively.
  • This heat radiating member 4 may be provided with a suitable transverse section such as a rectangular shape, a semicircular shape, a tubular shape or the like and in any of such shapes the opposite ends thereof are open.
  • the body 1 is fixed to the supporting post 3 so as to be angularly positioned with respect thereto so that the tip of the body is higher than the fitting portion 1a.
  • the inside of the body I is gradually heated to a high temperature by the heat of the bulb.
  • the heated air inside the body goes out through the conduit pipes 8 into the inside of the heat radiating member 4 secured to the exterior surface lb ofthe body I. Since the heat radiating member 4 is also angularly positioned with the body 1, one end opening 4b of the member is higher than the other end opening 4a.
  • the heated air which has been introduced to the inside of the heat radiating member 4 may be discharged to the atmosphere through either one of the opposite openings 4a or 4b so that the induced flow of the cooling air may be produced in either direction through the member 4 thus effectively cooling the heated body 1.
  • conduit pipes 8 for establishing the air communication between the inside of the body 1 and the atmosphere passing through the inside of member 4 are arranged to protrude over the exterior surface of the upper wall lb of the body 1, the introduction of rainwater into the inside of the body is effectively prevented so that the various functional parts disposed within the body 1 are prevented from being damaged.
  • FIG. 4 Another embodiment of a heat radiating device of the present invention will be described hereinafter with reference to FIG. 4.
  • the general illuminating apparatus provided with this heat radiating device is also adapted to be similarly fixed to the tip of the supporting post 3 as previously shown in FIG. 1 and the same reference numerals as those in FIG. 1 indicate the equivalent parts of the apparatus, and, therefore, the description concerning such equivalent parts is omitted.
  • FIG. 4 differs from the previous one of FIG. 1 only in the arrangements of the end openings of the heat radiating member 40 and of the air vent means establishing the air communication between the inside of the body and the atmosphere.
  • openings for establishing air-communication between the inside of the body 1 and the atmosphere passing through the inside of the heat radiating member 40 there are provided openings for establishing air-communication between the inside of the body 1 and the atmosphere passing through the inside of the heat radiating member 40.
  • the opposite end openings of the member 40 are arranged at a certain distance above the exterior surface of the upper wall of the body 1, as indicated by the reference numerals 40a and 40b in FIG. 4.
  • the present invention is directed to a heat radiating device for use in an illuminating apparatus having a high power bulb therein, as in a street lamp, and is characterized in that, while the high power bulb is turned on, the temperature inside the body 1 of the apparatus is held below a certain value which greatly increases the life of the bulb. Therefore, if the present invention is applied to an illuminating apparatus, the temperature rise of the body of the apparatus can be limited within a desiable range even in the case that the electric bulb mounted therein is a high power bulb such as 700 watt or more. Furthermore the body of the apparatus is made of stainless steel which has not been used in the past due to its relatively low heat conductivity. In addition, by employing stainless steel as the material for the body of the apparatus this eliminates need for painting the body and as a result the manufacturing cost thereof is substantially reduced.
  • an illuminating apparatus comprising a housing having a plurality of walls surrounding a space adapted to contain a lighting means, the improvement comprising a heat radiating device for removing the heat from the interior of said space, said heat radiating device comprising a box shaped heat radiating member secured to the outside of one of said walls and substantially enclosing a volume of space between said heat radiating device and said wall, said heat radiating memher having openings at opposite ends thereof and an unobstructed direct passage provided within said member leading from one of said opposite ends to the other of said opposite ends, thereby allowing a free flow of air from one of said ends through the inside of said heat radiating member to the other of said ends; and air vent means in said wall providing communication between the interior of said housing and the space surrounded by said heat radiating member.
  • said air vent means comprises a plurality of spaced apart conduits, each of said conduits extending above the surface of said wall into the interior of said heat radiating member.
  • each of said openings at said opposite ends of said heat radiating means is positioned at a distance above the surface of said wall and wherein said air vent means comprises a plurality of spaced apart openings in said wall.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
US00282011A 1972-03-21 1972-08-21 Heat radiating device for illuminating apparatus Expired - Lifetime US3784808A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47027398A JPS4895092A (online.php) 1972-03-21 1972-03-21

Publications (1)

Publication Number Publication Date
US3784808A true US3784808A (en) 1974-01-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00282011A Expired - Lifetime US3784808A (en) 1972-03-21 1972-08-21 Heat radiating device for illuminating apparatus

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Country Link
US (1) US3784808A (online.php)
JP (1) JPS4895092A (online.php)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4254454A (en) * 1979-12-21 1981-03-03 Pelton & Crane Company Self-ventilating dental lighting device
US4695930A (en) * 1985-10-03 1987-09-22 Gte Products Corporation Infrared floodlight assembly
US4755917A (en) * 1986-08-07 1988-07-05 Hella Kg Hueck & Co. Headlight for vehicles, in particular motor vehicles
US4905132A (en) * 1988-12-22 1990-02-27 Regent Lighting Corporation Lamp fixture with a modified enclosure plate
US5065294A (en) * 1988-01-22 1991-11-12 Poot Lichtenergie B.V. Fitting for horticultural lighting
EP1925879A1 (de) * 2006-11-27 2008-05-28 René Haschert Gehäuse für Beleuchtungskörper sowie Leuchte, umfassend dieses Gehäuse
US20090316395A1 (en) * 2008-06-18 2009-12-24 Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. Solar led lamp assembly
USD613894S1 (en) * 2009-03-09 2010-04-13 Kmw Inc. Street lamp
USD613893S1 (en) * 2009-03-04 2010-04-13 Kmw Inc. Street lamp
GB2469284A (en) * 2009-04-07 2010-10-13 Atkinson Design Ass Ltd Modular street light.
US20140104859A1 (en) * 2012-10-16 2014-04-17 Antoine ARAMAN Outdoor lighting device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2799773A (en) * 1953-01-27 1957-07-16 Naras Res Inc Reflector
US3377480A (en) * 1966-09-14 1968-04-09 Gen Electric Luminaire
US3521701A (en) * 1967-08-03 1970-07-28 Mori Denki Mfg Co Ltd Radiator unit for industrial safety illuminating apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2799773A (en) * 1953-01-27 1957-07-16 Naras Res Inc Reflector
US3377480A (en) * 1966-09-14 1968-04-09 Gen Electric Luminaire
US3521701A (en) * 1967-08-03 1970-07-28 Mori Denki Mfg Co Ltd Radiator unit for industrial safety illuminating apparatus

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4254454A (en) * 1979-12-21 1981-03-03 Pelton & Crane Company Self-ventilating dental lighting device
US4695930A (en) * 1985-10-03 1987-09-22 Gte Products Corporation Infrared floodlight assembly
US4755917A (en) * 1986-08-07 1988-07-05 Hella Kg Hueck & Co. Headlight for vehicles, in particular motor vehicles
US5065294A (en) * 1988-01-22 1991-11-12 Poot Lichtenergie B.V. Fitting for horticultural lighting
US4905132A (en) * 1988-12-22 1990-02-27 Regent Lighting Corporation Lamp fixture with a modified enclosure plate
EP1925879A1 (de) * 2006-11-27 2008-05-28 René Haschert Gehäuse für Beleuchtungskörper sowie Leuchte, umfassend dieses Gehäuse
US20090316395A1 (en) * 2008-06-18 2009-12-24 Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. Solar led lamp assembly
US7832892B2 (en) * 2008-06-18 2010-11-16 Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. Solar LED lamp assembly
USD613893S1 (en) * 2009-03-04 2010-04-13 Kmw Inc. Street lamp
USD613894S1 (en) * 2009-03-09 2010-04-13 Kmw Inc. Street lamp
GB2469284A (en) * 2009-04-07 2010-10-13 Atkinson Design Ass Ltd Modular street light.
GB2469284B (en) * 2009-04-07 2013-01-16 Primalux Ltd Lighting System
US20140104859A1 (en) * 2012-10-16 2014-04-17 Antoine ARAMAN Outdoor lighting device
US9482422B2 (en) * 2012-10-16 2016-11-01 Antoine ARAMAN Outdoor lighting device

Also Published As

Publication number Publication date
JPS4895092A (online.php) 1973-12-06

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