摘要:
The present invention relates to a heat transferring arrangement (100, 400) for cooling at least one light emitting diode (302), wherein the heat transferring arrangement (100, 400) comprises a centre portion (102, 402) configured for mounting the light emitting diode (302) and adapted to receive heat generated from the light emitting diode (302) when emitting light, and a plurality of elongated heat transferring elements (104), each having a first end portion (106) connected to the centre portion (102, 402) and a second end portion (108) which when inserted in a housing (200) is configured to be in abutment with an inner surface (202) of the housing (200), so that the generated heat is thermally transferred to the housing (200). Advantages with the invention includes, at least, that a passive heat transferring arrangement is provided which may reduce the need of an external fan or membranes to provide sufficient cooling.
摘要:
An LED based illumination module includes a thermal interface surface that is coupled to a thermal interface surface of a reflector using engaging members that generate a compressive force between the thermal interface surfaces. The engaging members may be, e.g., protrusions that interface with recesses, spring pins, formed sheet metal, magnets, mounting collar, etc. The reflector may include a vented portion that is not optically coupled to the LED based illumination module to allow air to pass through the reflector.
摘要:
An ink curing apparatus (11) comprising a UV light source (13); at least one moveable shutter means (17, 17a), which is moveable about the longitudinal axis of the UV light source (13); and at least one reflector (15); wherein at least one air passage (19a) is defined along substantially the entire surface area of the or each reflector (15).
摘要:
A light emitting diode (LED) lamp includes a base with one or more LED chips, an internal cover over the LED chips, where the cover is a translucent ceramic whose thermal conductivity is greater than glass, where the cover has an interior surface separated from the LED chips by a gap, and where an exterior surface of the cover is coated with a phosphor. The ceramic cover preferably has a bulk thermal conductivity of at least 5 W/(m·K), such as polycrystalline alumina. The LED chips preferably are blue LEDs and the phosphor is selected so that the lamp emits white light. In the method of making the lamp, the phosphor may be applied to the exterior surface of the cover as a preformed sheet or in a coating.
摘要:
The invention involves a lighting element of which it is possible to assemble various lighting arrangements. The lighting elements consist of one or more light sources (805a, 805b), a reflecting surface (802) and means for supplying power to the light source. The light source or light sources are kept substantially above the reflecting surface supported by a support element, whereby light emitted everywhere by the light source can be effectively utilised. The reflecting surface directs the light substantially in the lighting direction of the lighting element past the light source. Around the light source, there is a collar structure (804) manufactured of light-reflecting material which controls the light substantially in the lighting direction. Covers (806) and a stand (801) of the lighting elements are designed such that it is possible to join the lighting elements together to form a lighting arrangement In the reflecting surface, there can be a protrusion which reflects light fallen on it past the light source in the lighting direction. The light sources obtain their power via the support elements, The collar structures can be designed such that the light sources surrounded by the collar structures are locatable into connection with each other. The light sources surrounded by the collar structures can be located as a circle, whereby the reflecting surface reflects light emitted from the light sources via an opening in the middle of the circle. As the light source, electric light sources are usually utilised. The invention is especially suitable for LED lights.
摘要:
An illumination device which is capable of radially radiating light generated from a light emitting element (4) while the efficiency of dissipating heat from the light emitting element (4) is improved and in which the utilization efficiency of the light from the light emitting element (4) can be improved. The illumination device includes a light emitting element (4), and a plurality of radially disposed radiation fins (2b1-2b8) for dissipating heat generated by the light emitting element (4). An aperture (2b1c) for allowing light from the light emitting element (4) to pass therethrough is formed between adjacent ones of the radiation fins (2b1,2b2) and a reflection surface (2b1a) for reflecting light which is blocked by the radiation fins (2b1,2b2) when passing through the aperture (2b1c) is formed on a surface of each of the radiation fins (2b1,2b2).
摘要:
Beleuchtungseinheit mit einem flächenförmigen Trägerteil (3), auf dem beidseitig jeweils auf einer Hauptfläche (1,2) eine Mehrzahl von lichtemittierende Halbleiterbauelementen (6), insbesondere Hochleistungs-Leuchtdioden, angeordnet sind, und auf jeder Seite des Trägerteils (3) jeweils ein Kühlkörper (4,5) vorgesehen ist, dadurch gekennzeichnet, - dass jedes der Halbleiterbauelemente (6) mittels eines Wärmeleitmittels (16), das durch eine Durchbrechung (17) des Trägerteils (3) hindurchgeführt ist, gut wärmeleitend mit einem auf der gegenüberliegenden Seite des Trägerteils (3) vorgesehenen Kühlkörper (4,5) verbunden ist, und - dass an jedem Kühlkörper (4,5) zumindest ein Reflektor (18) ausgebildet ist, der eine reflektierende Oberfläche (7) aufweist, welche die Lichtemission eines Halbleiterbauelementes (6) bündelt, welches auf der diesem Kühlkörper zugewandten Seite des Trägerteils (3) angeordnet ist.
摘要:
An LED lamp (10) having a substantially concave heat sink (12) having a raised, frusto-conical center (14) surrounded by an outer rim (16). The heat sink (12) is preferably aluminum or other metal and at least the frusto-conical center preferably has a reflective coating. To further aid in heat removal the outer rim (16) can be provided with a plurality of apertures (16a). A side-emitting LED (18) is mounted on the frusto-conical center (14). A cover (26) is fixed to the outer surface (22) and defines a volume (28) between the frusto-conical center (14) and the cover (26). A circuit (30) is located within the volume (28) and an electrical connection (32) provides connection to the LED (18). In another embodiment a cover (26a) is provided with studs (54) and a reflector (42a) is provided with studs (56) that engage barbs (50) formed in a heat sink (12a).