Patent ID: 9662191
Date: 2017-05-30
CPC Classifications: A61C

Claim:
1. A dental light curing device, comprising: a first shell segment and a second shell segment that jointly define an installation space and an assembly opening communicating with the installation space, the first shell segment including a first support rib facing the second shell segment and a first confining rib spaced from the first support rib and located between the first support rib and the assembly opening, the second shell segment including a second support rib facing the first shell segment to join the first support rib to form a support ring which divides the installation space into a first zone and a second zone that communicate with each other, and a second confining rib spaced from the second support rib and located in the second zone to join the first confining rib to form a confining ring, at least one of the first shell segment and the second shell segment including at least one air inlet corresponding to the first zone and at least one air outlet corresponding to the second zone; a duty module which is located in the first zone and includes a control board, a power storage element to save electric power and supply the electric power to the control board for operation thereof, and an operation element jutting from the first shell segment and the second shell segment that is operable to activate the control board to perform duty; and a light emitting module which is located in the second zone and electrically connected to the duty module to be controlled thereof to generate a curing light and includes a primary heat sink, a secondary heat sink located on the primary heat sink corresponding to the assembly opening and at least one light emitting chip electrically laid on the secondary heat sink, the primary heat sink including a cooling dock located between the support ring and the confining ring, a cooling passage running through the cooling dock, a plurality of cooling pillars located in a spaced manner on the cooling dock toward the assembly opening, a plurality of cooling vents located respectively between any two neighboring cooling pillars to communicate with the cooling passage, a cooling deck connected to each of the cooling pillars and located in the assembly opening of the cooling passage, a wiring trough located at one end of the cooling dock and a cooling fan located on the cooling dock in the cooling passage and electrically connected to the duty module; the secondary heat sink including a heat transfer plane mounted onto the cooling deck and in surface contact with the cooling deck, a duty plane opposing the heat transfer plane and having an electric circuit laid thereon to hold the light emitting chip, and the secondary heat sink including a power cord electrically connected to the duty module and passed through the wiring trough to form electric connection with the duty module to get duty power to supply the electric circuit; wherein the operation element is operable to trigger the control board to control the power storage element to supply electric power to the power cord and the cooling fan such that the light emitting chip gets the electric power and operates to generate the curing light, the cooling fan receiving the electric power and being activated to generate airflow in the installation space and draw cooling airflow through the air inlet into the installation space and to pass through the cooling passage to perform heat exchange with the heat transfer plane on the cooling deck, and to be discharged through the cooling vents and the air outlet.