AboutLEDswitching power supplycooling problemhas been donemany timesin the previousdiscussion.
But in theheattechnicallythere is a gap, there aresome customersask usbusinessmensaidLEDswitching powerdissipationproblem can not besolved,not achieve the desiredresults.Todayfor theusersto solve such problemson the LEDheat dissipationdesign, the mostlikely to beoverlooked is thelight-emittingsurface heatingproblems, such asCREESMD10WLED,light-emitting surfacetemperature of100degrees or more, in addition,the absence ofa certainspace forthe lensglowsurfaceheatbuffer, will causethermalfailure, the light fadesin advance.
LED coolingreasons for failureare the followingaspects:
1. LEDlightresistancelarge, lightheat dissipationnotuse anythermal pastewill causethermalmotionfailed. 2 Use thealuminum plateasPCB connectorsource,becausealuminum platewith multipleresistance, lightnotheat transfer,thermal pastewill makeuse of anythermalmovement failed 3 Uselightaluminum plateasPCB connectors,andacts as a heatsinkplatebecomea part ofthe radiatorwithhollowengagement.Becausealuminum plateand heat sinkthermal contact resistanceis too large,the use of anythermal pastewill causethermalmotionfailed.