Abstract: A light curing device includes a housing module and a lighting module. The lighting module includes a light emitter, a driver and a switch module. The light emitter includes a plurality of light-emitting elements configured to emit curing light into an irradiation space in the housing module. The driver is for driving the light-emitting elements, and includes a plurality of user-operable setting buttons corresponding to at least one of the light-emitting elements. When triggered, the switch module is operable to activate the driver to drive at least one of the light-emitting elements that corresponds to a selected one of the user-operable setting buttons to emit the curing light.

Abstract: A light curing device includes a plurality of LEDs, a driver, a switch module and a timer. The timer includes a plurality of time-setting buttons corresponding to different timing configurations, respectively. When the timer is activated by the switch module and one of the time-setting buttons is operated, the timer outputs an activating signal, and outputs a deactivating signal when a time duration defined by the corresponding timing configuration has elapsed. The driver drives at least one of the LEDs to emit curing light into an irradiation space in a housing module when triggered by the activating signal, and stops driving the LEDs to emit the curing light when triggered by the deactivating signal.

Abstract: A direct-current (DC) motor control device includes first and second switches, a conducting element and a power storage element. The power storage element, the conducting element and the second switch are connected to each other and form a loop, and the first switch is connected to a common node between the power storage element and the conducting element. When the DC electric power source is normally connected to the DC motor control device, the first switch is turned on, and the conducting element establishes a unidirectional conduction from a DC motor to the power storage element while the second switch is turned off.

Abstract: An LED mounting seat includes a main body having a supporting surface that abuts against a light emitting portion of an LED, a connecting end that is connected to a circuit board, and a side surface that interconnects the supporting surface and the connecting end. The side surface is formed with a pair of lateral grooves. Each of the lateral grooves is defined by a groove-defining surface that has an abutting surface portion facing an opening of the corresponding one of the lateral grooves. The LED has two leads extending respectively through the lateral grooves and abutting respectively against the abutting surface portions of the groove-defining surfaces.

Abstract: An LED mounting seat includes a main body having a supporting surface that abuts against a light emitting portion of an LED, a connecting end that is connected to a circuit board, and a side surface that interconnects the supporting surface and the connecting end. The side surface is formed with a pair of lateral grooves. Each of the lateral grooves is defined by a groove-defining surface that has an abutting surface portion facing an opening of the corresponding one of the lateral grooves. The LED has two leads extending respectively through the lateral grooves and abutting respectively against the abutting surface portions of the groove-defining surfaces.

Abstract: An apparatus for detecting start-up of a vehicle and for controlling an external device includes a detecting unit and a control unit. The detecting unit is to be electrically connected to a battery of the vehicle for obtaining information associated with a voltage of the battery. The control unit is electrically connected between the detecting unit and the external device, and is configured to determine whether the vehicle has started up with reference to the information obtained by the detecting unit, and to generate a working signal for triggering the external device upon detecting that the vehicle has started up.

Abstract: A current-regulated light emitting device for vehicle use includes a light emitting unit and a current limiting unit. The current limiting unit includes first and second switches and first and second bias units. The first switch is for making and breaking an electrical circuit between the light emitting unit and an electric power source. The first bias unit is for causing the first switch to conduct so as to activate the light emitting unit when the first bias unit receives a drive voltage from the electric power source. The second bias unit is for causing the second switch to conduct when amount of current flowing through the first switch exceeds a predetermined threshold, thereby turning off the first switch to interrupt current flow through the light emitting unit.

Abstract: A current-regulated light emitting device for vehicle use includes a light emitting unit and a current limiting unit. The current limiting unit includes first and second switches and first and second bias units. The first switch is for making and breaking an electrical circuit between the light emitting unit and an electric power source. The first bias unit is for causing the first switch to conduct so as to activate the light emitting unit when the first bias unit receives a drive voltage from the electric power source. The second bias unit is for causing the second switch to conduct when amount of current flowing through the first switch exceeds a predetermined threshold, thereby turning off the first switch to interrupt current flow through the light emitting unit.