Signify Holding B.v.

Lumileds LLC

Philips Lighting Holding B.v.

Lumileds Holding B.v.

Mohammad Mirsadeghi

Lukas Kuepper

Gunnar Luettgens

Aldo Tralli

Nadin Roesler

Gordon Patrick Rudolf Elger

Simon Eme Kadijk

Vincent Stefan David Gielen

Dominique Maria Bruls

Georges Marie Calon

Leendert Van Der Tempel

Dirk Gehrels

An automotive LED lamp unit includes a plate-like mounting member, LED light sources arranged on two opposite sides of the plate-like mounting member, and a heat sink. The heat sink includes cooling fins and a tapered portion facing the LED light sources and being connected to one end of the plate-like mounting member.

LED lamp unit, in particular for automotive lamps

A light emitting device () comprising a first light source () and a second light source (), a luminescent element () comprising a first light input surface (), a second light input surface (), a light exit surface (), a first further surface () and a second further surface (), a first cooling assembly () and a second cooling assembly (), the first cooling assembly () comprising a first cooling element () and a first light source board () on which one of the light sources is mounted, and the second cooling assembly () comprising a second cooling element () and a second light source board (), on which the other one of the light sources is mounted, and the second cooling assembly () being arranged with a surface () in mechanical and thermal contact with the first further surface () of the luminescent element thereby forming a first interface and the first cooling assembly () being arranged with a surface () in mechanical and thermal contact with the second further surface () of the luminescent element thereby forming a second interface, the first interface and the second interface comprising a flatness of less than 10 &#x3bc;m, and the root mean squared surface roughness, R, of the first further surface () and the second further surface () of the luminescent element being comprised in the interval 1 &#x3bc;m&#x3c;R&#x3c;5 &#x3bc;m.

Light emitting device with cooling elements

The invention provides a lighting device comprising a light source and a heat sink (). The heat sink () is configured to dissipate thermal energy from the light source when in operation. The heat sink comprises a plurality of pin-shaped fins () and a support (), wherein each fin () has a fin height (h) relative to the support (), a bottom part () associated with the support () and a top part (), a cross-section having a first width (d) and a second width (d) having a ratio d/dselected from the range of 1.2-10, and a first width axis, wherein the first width axes of the pin-shaped fins () are arranged parallel, and wherein the pin-shaped fins () are hollow over at least part of their fin height (h).

Low weight tube fin heat sink

The present invention relates to a LED lamp unit () comprising at least two LED light sources () arranged between a heat sink () and an electrical connector base at two opposing sides of the lamp unit () to emit in opposed half spaces. The proposed LED lamp unit can be constructed in a very compact form in order to replace known halogen, xenon and incandescent bulbs without changing the construction of the reflector and mechanical parts in a head lamp or signaling lamp.

Growing community of inventors

Eindhoven, Netherlands

Mohammad Mirsadeghi