Abstract: A lighting device control circuit includes an input voltage generating circuit and color temperature adjusting circuit. The color temperature adjusting circuit includes an encoder switch and first voltage adjusting element. The encoder switch includes a first main pin, first auxiliary pin, second main pin, second auxiliary pin, main common pin, auxiliary common pin and switch element. The main common pin and the auxiliary common pin are connected to a grounding point. The switch element selectively connects two of the above pins to each other. The positive electrode of a first light source is connected to the grounding point and the negative electrode thereof is connected to the first main pin, first auxiliary pin and second auxiliary pin. The positive electrode of a second light source is connected to the grounding point and the negative electrode thereof is connected to the second main pin via the first voltage adjusting element.

Abstract: A plant growth lighting device having multi-function heat dissipation structure includes a heat dissipation base and a light source board. The heat dissipation base includes a substrate, two structure supporting fins disposed on the first surface of the substrate, two assistant fins, a plurality of heat dissipation fins and two fixation portions disposed on the second surface of the substrate. The installation space is formed between the two fixation portions and the substrate. The light source board is disposed in the installation space. The two assistant fins are disposed between the two structure supporting fins and the heat dissipation fins are disposed between the two assistant fins. The two structure supporting fins, the two assistant fins and the heat dissipation fins extend from one end of the substrate to the other end of the substrate.

Abstract: An ultra-thin downlight with enhanced thermal dissipation performance includes a housing, a light source board and a light cover. The housing includes a first ring portion, a cylindrical portion and a second ring portion connected to each other. The cylindrical portion is disposed between the first ring portion and the second ring portion, such that an accommodating space is formed between the first ring portion, the cylindrical portion and the second ring portion. The light source board is fixed on the inner surface of the second ring portion and disposed in the accommodating space. A portion of the light source board is covered by the second ring portion and the other portion of the light source board is exposed from the second ring portion. The light cover is disposed on the inner surface of the first ring portion.

Abstract: A light-emitting diode (LED) lamp having high color-rendering property includes a lamp housing, a light source board, a plurality of white LEDs and a plurality of purple LEDs. The light source board is disposed in the lamp housing. The white LEDs are disposed on the light source board. The purple LEDs are disposed on the light source board. The wavelength range of the lights emitted by the purple LEDs is within the ultraviolet A (UVA) band.

Abstract: An emergency lighting device with high safety includes a fixture base, two holders and a light tube. The holders are disposed on the fixture base. Each of the holder includes a holder body, two conductive plates and a rotational fixture. The conductive plates are disposed in the holder body and the rotational fixture is disposed in the central recess of the holder body. The light tube has two end caps and a tube body. The end caps are installed on the holders respectively. Each of the end caps has a non-conductive pin and two conductive pins inserted into the rotational fixture of one of the holders, such that the conductive pins of the end cap contact the conductive plates of the holder respectively.

Abstract: An industrial emergency lighting device includes a driving module, a light-emitting module, a charging module, a rechargeable power source module, a power supply detecting module and a control module. The driving module, charging module and power supply detecting module are connected to an external power source. The light-emitting module is connected to the driving module. The rechargeable power source module is connected to the charging module and light-emitting module. The control module is connected to the driving module, power supply detecting module and rechargeable power source module. The power supply detecting module detects the input voltage of the external power source. When determining that the input voltage is low-level, the control module triggers a storage mode counting process. When determining that the number of the voltage changes of the input voltage reaches a predetermined number of times during a predetermined time period, the control module enters a sleep mode.

Abstract: An ultra-thin narrow-bezel panel light includes a base plate and a bezel surrounding the base plate. The base plate includes a plurality of side walls and an accommodating portion between the side walls, and the height of the base plate is 18 mm˜26 mm. Each of the side walls has a connecting side and the side walls are installed and fixed on the bezel via the connecting sides thereof, such that the overall height of the panel light can be reduced to 20 mm˜28 mm. Thus, the panel light can be ultra-thin, low-cost and of narrow bezel.

Abstract: A method for increasing the protection range of a thermal fuse, which includes the following steps: disposing the thermal fuse on a circuit board including a circuit loop, a first heat generating element and a second heat generating element; the second heat generating element is electrically connected to the circuit loop; electrically connecting the first heat generating element to the circuit loop; and disposing the heat conducting material on the circuit loop and making the heat conducting material cover the thermal fuse, the first heat generating element and the second heat generating element.

Abstract: A tri-proof lamp with replaceable sensor end cap includes a lamp body, an end cap, a light source board and a sensing module. The end cap is disposed at one end of the lamp body and includes a first portion and a second portion connected to each other. One end of the first portion has a cable outlet. The second portion has a connecting portion and a sensing portion connected to each other and the connecting portion is connected to the other end of the first portion. The light source board is disposed in the lamp body and includes a sensing module connecting port. The sensing module is disposed in the sensing portion and includes a sensing module plug connected to the sensing module connecting port.

Abstract: A linear lamp having splicing member includes a lamp body, an extension module and a splicing member. The splicing member has two fixing portions disposed at the two ends thereof respectively. The two fixing portions of the extension module are engaged with the first combining member of the lamp body and the second combining member respectively in order to splice the extension module and the lamp body with each other. Via the above structure, the functional extension of the linear lamp can be realized by linear splicing mechanism, such that various extension functions can be conveniently and efficiently added to the linear lamp regardless of the environment.

Abstract: A tri-proof lamp with replaceable sensor end cap includes a lamp body, an end cap, a light source board and a sensing module. The end cap is disposed at one end of the lamp body and includes a first portion and a second portion connected to each other. One end of the first portion has a cable outlet. The second portion has a connecting portion and a sensing portion connected to each other and the connecting portion is connected to the other end of the first portion. The light source board is disposed in the lamp body and includes a sensing module connecting port. The sensing module is disposed in the sensing portion and includes a sensing module plug connected to the sensing module connecting port.

Abstract: An ultra-thin downlight with enhanced thermal dissipation performance includes a housing, a light source board and a light cover. The housing includes a first ring portion, a cylindrical portion and a second ring portion connected to each other. The cylindrical portion is disposed between the first ring portion and the second ring portion, such that an accommodating space is formed between the first ring portion, the cylindrical portion and the second ring portion. The light source board is fixed on the inner surface of the second ring portion and disposed in the accommodating space. A portion of the light source board is covered by the second ring portion and the other portion of the light source board is exposed from the second ring portion. The light cover is disposed on the inner surface of the first ring portion.

Abstract: A hanging plant growth lighting device with spectrum adjustment function includes a frame, a power source module, a plurality of light source modules, a dimming module and a hanging structure. The frame includes a first frame bar, a second frame bar and a connecting portion. The power source module is disposed in the connecting portion. The light source modules are electrically connected to the power source module. The two ends of each of the light source modules are fixed at the first frame bar and second frame bar respectively. The dimming module is electrically connected to the power source module. The hanging structure includes a retractable structure, two first hanging rings fixed on the first frame bar and two second hanging rings fixed on the second frame bar. The retractable structure is connected to the two first hanging rings and the two second hanging rings.

Abstract: A modularized lighting device includes a lighting module and a frame. The lighting module includes a housing and two end caps disposed at the two ends of the housing respectively. Each of the end caps includes a base having an accommodating space and two connecting sheets fixed at the bottom of the accommodating space. The frame includes two electrical connecting modules. Each of the electrical connecting modules includes an installation base having an installation space and two clamping structures disposed at the bottom of the installation space. The two end caps are detachably installed at the two electrical connecting modules respectively, such that the two connecting sheets of each of the end caps are inserted into the two clamping structures of the electrical connecting module corresponding thereto.

Abstract: A hanging plant growth lighting device with spectrum adjustment function includes a frame, a power source module, a plurality of light source modules, a dimming module and a hanging structure. The frame includes a first frame bar, a second frame bar and a connecting portion. The power source module is disposed in the connecting portion. The light source modules are electrically connected to the power source module. The two ends of each of the light source modules are fixed at the first frame bar and second frame bar respectively. The dimming module is electrically connected to the power source module. The hanging structure includes a retractable structure, two first hanging rings fixed on the first frame bar and two second hanging rings fixed on the second frame bar. The retractable structure is connected to the two first hanging rings and the two second hanging rings.

Abstract: A lighting device includes an end cap, a circuit board, a plurality of first and second connection pins and a tubular housing. The end cap includes a hollow cylindrical portion and a connection portion. The hollow cylindrical portion has an opening and an installation bottom surface, and an accommodating space is formed therebetween. The connection portion includes a plurality of first and second hollow connection tubes connected to the accommodating space. The circuit board is disposed on the installation bottom surface, and includes a plurality of first connection points and a plurality of second connection points. The first connection pins penetrate through the first hollow connection tubes respectively in order to connect to the first connection points. The second connection pins penetrate through the second hollow connection tubes respectively in order to connect to the second connection points. The tubular housing is connected to the end cap.

Abstract: A high-efficiency LED driving circuit includes a rectifying module, a power converting module and a power supply module. The power converting module is connected to the rectifying module and a load, and includes a controller. The load includes a plurality of LEDs. The power input pin of the controller is connected to a connecting point and the connecting point is disposed between two of the LEDs. The quantity of the LEDs can be 2 or more than 2. The circuit design of the driving circuit can effectively reduce the power consumption and heat generation thereof, such that the reliability of the driving circuit can be effectively enhanced.

Abstract: A multi-function lighting device includes a controller, a first switch, a second switch, a third switch, a fourth switch and a light source group including a first light source and a second light source. The three ends of the first switch are connected to the controller, a driving power source and a first node respectively. The three ends of the second switch are connected to the controller, the first node and a grounding point respectively. The three ends of the third switch are connected to the controller, the driving power source and a second node respectively. The three ends of the fourth switch are connected to the controller, the second node and the grounding point respectively. The light source group is connected to the first node and the second node.