EP 2236917 A4 20131204 - RADIATOR, AND LIGHTING DEVICE
Title (en)
RADIATOR, AND LIGHTING DEVICE
Title (de)
STRAHLER UND BELEUCHTUNGSVORRICHTUNG
Title (fr)
RADIATEUR ET DISPOSITIF D'ÉCLAIRAGE
Publication
Application
Priority
- JP 2008072147 W 20081205
- JP 2007341210 A 20071228
Abstract (en)
[origin: EP2236917A1] The present invention provides a heat dissipation device capable of improving heat dissipation performance by spreading a heat exchanging medium, such as air, without increasing its external dimensions, and provides a lighting device having the heat dissipation device. By configuring a heat dissipation device 1 with an inner tube 12 to which heat from LED modules 2, 2 ... is to be transferred, first fins 13, 13 ... protruding from an outer surface 12a of the inner tube 12 in a direction crossing the outer surface 12a, and an outer tube 14 covering the inner tube 12, the heat dissipation surface area is increased and heat dissipation performance is improved without increasing the external dimensions of the heat dissipation device 1. Moreover, heat is efficiently transferred from the surfaces of the inner tube 12, outer tube 14 and first fins 13, 13 ... which form ventilation paths (medium paths) to the air flowing at an increased flow rate by a stack effect, and the air is spread to between adjacent first fins 13, 13 ... and to the bases of the first fins 13, 13 ...., and thus heat dissipation performance is improved without increasing the external dimensions of the heat dissipation device 1.
IPC 8 full level
F21V 29/00 (2006.01); F21S 8/02 (2006.01); F21S 8/04 (2006.01); F21Y 101/02 (2006.01)
CPC (source: EP US)
F21S 8/02 (2013.01 - EP US); F21S 8/026 (2013.01 - EP US); F21V 29/74 (2015.01 - EP US); F21V 29/75 (2015.01 - EP US); F21V 29/763 (2015.01 - EP US); F21V 29/773 (2015.01 - EP US); F21V 29/78 (2015.01 - EP US); F21V 29/83 (2015.01 - EP US); F21Y 2115/10 (2016.07 - EP US)
Citation (search report)
- [XYI] US 2006193139 A1 20060831 - SUN TSUNG-TING [TW], et al
- [XYI] JP 3125101 U 20060907
- [XI] JP 2003178602 A 20030627 - KOITO MFG CO LTD
- [XI] JP 2006310057 A 20061109 - ARUMO TECHNOS KK
- [XI] US 2007279862 A1 20071206 - LI JIA-HAO [TW]
- [XI] WO 2006102785 A1 20061005 - NEOBULB TECHNOLOGIES INC [BN], et al
- See references of WO 2009084372A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 2236917 A1 20101006; EP 2236917 A4 20131204; CN 101910722 A 20101208; JP 2009163955 A 20090723; JP 4945433 B2 20120606; US 2010282446 A1 20101111; WO 2009084372 A1 20090709
DOCDB simple family (application)
EP 08867446 A 20081205; CN 200880122717 A 20081205; JP 2007341210 A 20071228; JP 2008072147 W 20081205; US 81066408 A 20081205