Lighting device and method for manufacturing same
AssigneeKoninklijke Philips Electronics N.V.
InventorsGunnar Luettgens, Benno Spinger, Egbert Lenderink, Daniël Anton Benoy
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Abstract
A lighting device (1) comprising an LED-unit (5), a collimator (2) and a housing (3), the LED-unit (5) is rigidly coupled to the collimator (2) only, so that no substantial forces can be applied to the LED-unit (5). A non-rigid heat transferring medium (10) is provided in a cavity (12) in the housing (3), to dissipate heat, generated by the LED-unit (5). The LED-unit (5) is therefore at least partly contained in the heat transferring medium (10).
Claims20
A lighting device comprising
- an LED-unit that includes an LED-die mounted on a heat spreader,
- a collimator, that is mounted at least partly in a housing, and
- a non-rigid heat transferring medium, contained in a cavity in the housing, wherein:
- the LED-unit is rigidly coupled to the collimator only and the heat spreader is at least partly contained in the heat transferring medium to dissipate heat generated by the LED-unit;
- the collimator has a lower surface for receiving light from the LED-unit and an upper surface from which collimated light is emitted;
- and
- the LED die has a light emitting surface that is in direct contact with the lower surface of the collimator.
A manufacturing method for a lighting device in which a surface of a collimator is rigidly coupled to a light-emitting surface of an LED-die that is mounted on a heat spreader, the collimator is mounted at least partly in a housing and a non-rigid heat transferring medium is fed into a cavity which is provided in the housing, so that the heat spreader is at least partly contained in the heat transferring medium.
A method comprising:
- providing a collimator having a lower surface and an upper surface;
- providing an LED-unit having a heat spreader upon which is mounted an LED-die with a light emitting surface;
- situating the light emitting surface to be in direct contact with the lower surface of the collimator;
- mounting the collimator with attached LED-unit in a housing;
- and
- feeding a non-rigid heat transferring medium into a cavity of the housing, so that the LED-unit is at least partly contained in the medium.
Dependencies are inferred from the claim text.