US 12,408,259 B2
Device for emitting light
Johann Kübel, Kasten (AT); and Gerald Zinner, Kasten (AT)
Appl. No. 17/295,246
Filed by Johann Kübel, Kasten (AT); and Gerald Zinner, Kasten (AT)
PCT Filed Dec. 10, 2019, PCT No. PCT/AT2019/060432
§ 371(c)(1), (2) Date May 19, 2021,
PCT Pub. No. WO2020/118339, PCT Pub. Date Jun. 18, 2020.
Claims priority of application No. A51104/2018 (AT), filed on Dec. 13, 2018.
Prior Publication US 2021/0400799 A1, Dec. 23, 2021
Int. Cl. H05K 1/02 (2006.01); B05D 3/06 (2006.01); B29C 35/08 (2006.01)
CPC H05K 1/0204 (2013.01) [B05D 3/067 (2013.01); B29C 35/0805 (2013.01); B29C 2035/0827 (2013.01); H05K 2201/10106 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A light-emitting device for the hardening of substances which harden under the irradiation of light, comprising:
an electrical light fixture with at least one heat contact surface and at least two electrical connections, whereby heat energy generated during the light emission can be dissipated over the heat contact surface, wherein:
the electrical light fixture is mounted on a support element, and
the support element has at least one recess in the area of the heat contact surface of the electrical light fixture,
a heat sink which is heat conductively connected to the heat contact surface of the electrical light fixture in the area of the recess in the support element, and
a thermistor which is electrically conductively connected to the electrical connections of the electrical light fixture, the thermistor being heat conductively connected to the heat sink and at the same time being electrically insulated from the heat sink,
wherein the support element has at least two passages and wherein contact pins of the thermistor are guided through the passages to the electrical connections of the electrical light fixture, and
wherein the electrical light fixture comprises a light emitting diode which is designed to emit UV-A light in a wavelength range of 315 to 380 nm.
 
18. A light-emitting device for the hardening of substances which harden under the irradiation of light, comprising:
a light-emitting diode with at least one heat contact surface and at least two electrical connections, whereby heat energy generated during light emission can be dissipated over the heat contact surface, wherein: the light-emitting diode is mounted on a first side of a support element, and the support element has at least one recess in an area of the heat contact surface of the light-emitting diode,
a heat sink primarily positioned on a second side of the support element opposite the first side, wherein the heat sink is heat conductively connected to the heat contact surface of the light-emitting diode through the recess in the support element, and
a thermistor positioned on the second side of the support element and which is electrically conductively connected to the electrical connections of the light-emitting diode, the thermistor being heat conductively connected to the heat sink and electrically insulated from the heat sink,
wherein the support element has at least two passages and wherein contact pins of the thermistor are guided through the passages to the electrical connections of the electrical light fixture, and
wherein the light-emitting diode is designed to emit UV-A light in a wavelength range of 315 to 380 nm.