Classifications

• • 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
  • F21V29/71—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
  • F21V29/713—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements in direct thermal and mechanical contact of each other to form a single system
• • 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
  • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
  • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
  • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
  • F21V29/50—Cooling arrangements
  • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
  • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
  • F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
  • F21V29/773—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
  • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
  • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
  • F21V29/87—Organic material, e.g. filled polymer composites; Thermo-conductive additives or coatings therefor
• • 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
  • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
  • F21V29/89—Metals

Definitions

• one object of the present invention lies in pro ⁇ viding a heat dissipating device for illuminating device.
• the heat dissipating device has a simple structure, good heat dissipating performance and at least partially has electri- cally insulating property.
• the concept of the present invention lies in manufacturing the heat dissipating device utilizing materials having a high thermal conductivity, as much as is possible, as main body, while assuring electrical insulation with part of electronic components provided in the heat dissipating device or elec ⁇ tronic components provided near to the heat dissipating de ⁇ vice in the illuminating device, so as to realize good heat dissipating effect.
• the heat dissipating device in accordance with the present invention is made from first and second thermal conductive materials, wherein the first thermal conductive material has a better thermal conductivity than the second thermal conductive material, while the second thermal conductive material has characteristics of electrical insulation.
• the first cup and the second cup superpose on each other such that the first heat sink having a cross section with an H-shaped profile is formed.
• the first cup and the second cup abut against each other through respective end surfaces thereof so as to form the first heat sink, moreover, open ends of the first and second cups face opposite direc- tions to form, for instance, an upper open end and a low open end of the first heat sink.
• the first heat sink formed in such a manner can accommodate two components to dissipate heat in the first and the second cups, respectively, so as to dissipate heat therefrom.
• the second heat sink has a body, and the first cup and the second cup are at least partially covered by the body, respectively.
• the body for instance, can cover inner circumferential walls and/or outer circumferential walls and/or inner surfaces of respective bases of the first cup and the second cup, so as to form a profile matching the shape of the first heat sink and to be in good thermal con ⁇ tact with the first heat sink.
• the first cup and the second cup are made in one piece.
• the first cup and the second cup are of a metal material, they can be made in one piece to be- come the first heat sink utilizing various suitable proc ⁇ esses, which simplifies the manufacturing process and reduces the cost.
• the superposing regions of the since the superposing regions of the ,
• the plurality of fins and the body are made in one piece.
• the fins and the second heat sink can be directly made in one piece, the manufacturing process is simplified.
• the fins are configured as insert-type fins or other parts having suitable structures for arrangement on the outer circumferential wall of the body.
• the second heat sink is made from a thermal conduc- tive plastic.
• the second heat sink can have dual properties of thermal conduction and insulation.
• the present invention further relates to an illuminating device comprising a driver, a light engine, and the heat dissipating device above.
• the driver is arranged in the first cup and the light engine is arranged in the second cup.
• the driver and the light engine are accommodated by the first and the second cups so as to save the structure space inside the il- luminating device.
• the heat dissipating device also can advantageously transmit outwardly heat generated by the driver and the light engine.
• Fig. 1 is a 3D exploded diagram of a first embodiment of a heat dissipating device in accordance with the present inven ⁇ tion;
• Fig. 1 shows a first embodiment of a heat dissipating device 100 in accordance with the present invention.
• the heat dissi- pating device 100 for an illuminating device (not shown) comprises a first heat sink 1 and a second heat sink 4.
• the first heat sink 1 and the second heat sink 4 are made from two materials having different thermal conductivities, respectively.
• Fig. 3 is a cross-section diagram of a third embodiment of a heat dissipating device 100 in accordance with the present invention.
• the third embodiment is different from the embodi ⁇ ment shown in Fig. 2 in that circumferential walls of the first cup 2 and the second 3 are completely imbedded into the body 5 made from a thermal conductive plastic, i.e. the ther- mal conductive plastic completely covers the inner circumfer ⁇ ential walls 6 and the outer circumferential walls 7 of the first heat sink 1.
• Fig. 4 is a cross-section diagram of a fourth embodiment of a heat dissipating device in accordance with the present inven ⁇ tion.
• the fourth embodiment is different from the embodiment shown in Fig. 3 in that apart from the inner circumferential walls 6 and the outer circumferential walls 7 of the first heat sink 1 being completely imbedded into the body 5, a bot ⁇ tom surface of the base of the first cup 2, i.e. an inner surface 8 facing the open end, is also imbedded into the body 5, and an inner surface 9 of the base of the second cup 3 is not covered by the body 5.
• the electrically insulating first cup 2 is particularly suitable to accommodate components such as driver or the like, and therefore, there is no need to provide an additional prior insulating housing for the driver accommodated therein.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=48095883

Family Applications (1)

Country Status (3)

Cited By (3)

Citations (3)

Family Cites Families (1)

• 2012
  • 2012-04-17 CN CN201210113354.8A patent/CN103375786B/zh active Active
• 2013
  • 2013-04-17 EP EP13716315.0A patent/EP2839210B1/fr active Active
  • 2013-04-17 WO PCT/EP2013/057971 patent/WO2013156511A1/fr not_active Ceased

Patent Citations (3)

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