TW201500683A - Light emitting diode light bar - Google Patents

Abstract

A light emitting diode light bar includes a heat dissipating base, a printed circuit board arranged on the heat dissipating base, a driving module, a cover and two lamp holders formed at two opposite ends of the light bar. A plurality of light emitting diodes are formed on the printed circuit board and electrically connected with the driving module. The lamp holders are electrically connected with external power. The driving module includes a recovery battery and a control module. The recovery battery and the control module are arranged on the heat dissipating base. When the external power works properly, the external power charges the recovery battery in addition to provide power for the light emitting diodes. When the external power is in failure and missing power, the recovery battery provides power for the light emitting diodes.

Description

Light-emitting diode tube

The invention relates to a light-emitting element, in particular to a light-emitting diode lamp with high reliability.

A Light Emitting Diode (LED) is a semiconductor component that converts current into light of a specific wavelength range. The light-emitting diode is widely used in the field of illumination because of its high brightness, low operating voltage, low power consumption, easy matching with integrated circuits, simple driving, and long life. For example, a light-emitting diode is arranged in a strip shape to form a light-emitting diode lamp for replacing a conventional fluorescent tube.

Existing light-emitting diode lamps usually include a light board, a casing and a driving power source. A light emitting diode is disposed on the light board. The driving power source is connected to an external power source to supply power to the light emitting diode. However, in the above-described light-emitting diode lamp, the power-off of the external power source directly extinguishes the light-emitting diode, so that the light cannot be normally emitted.

In view of this, it is necessary to provide a light-emitting diode lamp that can normally emit light even after the external power source is powered off.

A light-emitting diode lamp comprises a heat-dissipating base, a circuit board disposed on the heat-dissipating base, a driving power source and a lamp cover, and a lamp cap disposed at two ends of the lamp tube. The circuit board is provided with a plurality of light emitting diodes electrically connected to the driving power source. The lamp cap electrically connects the driving power source to the external power source. The driving power source includes a rechargeable battery and a monitoring controller. The rechargeable battery and the monitoring controller are disposed on the heat dissipation base. When the external power source is working normally, the monitoring controller controls the external power source to charge the rechargeable battery while charging the rechargeable battery. When the external power source is powered off and fails, the monitoring controller controls the rechargeable battery to supply power to the LED.

In the above-mentioned light-emitting diode lamp tube, by providing a rechargeable battery and a monitoring controller inside the lamp tube, when the external power source works normally, the monitoring controller controls the external power source to supply the light-emitting diode while charging the rechargeable battery. . When the external power source is powered off and fails, the monitoring controller controls the rechargeable battery to supply power to the LED. At this time, the above-mentioned light-emitting diode lamp will not be directly extinguished due to the power failure of the external power source, thereby achieving continuous illumination.

100‧‧‧Lighting diode lamp

10‧‧‧ Thermal base

11‧‧‧ cavity

12‧‧‧Chute

13‧‧‧heat sink

14‧‧‧K hook section

20‧‧‧ boards

21‧‧‧Lighting diode

30‧‧‧Drive power supply

31‧‧‧AC-DC converter

32‧‧‧Rechargeable battery

33‧‧‧Monitoring controller

40‧‧‧shade

41‧‧‧ curved body

42‧‧‧rails

50‧‧‧ lamp holder

51‧‧‧Connectors

52‧‧‧electrode pins

60‧‧‧External power supply

70‧‧‧External switch

FIG. 1 is a schematic structural view of a light-emitting diode lamp according to an embodiment of the present invention.

2 is a schematic view showing the power supply of the light-emitting diode lamp of FIG. 1.

Hereinafter, the light-emitting diode lamp of the present invention will be further described with reference to the drawings.

Referring to FIG. 1 , a light-emitting diode lamp 100 according to an embodiment of the invention includes a heat dissipation base 10 , a circuit board 20 disposed on the heat dissipation base 10 , a driving power source 30 and a lamp cover 40 , and two ends disposed at the lamp tube A lamp cap 50 for electrically connecting the driving power source 30 to an external power source.

The heat dissipation base 10 is made of a material having good thermal conductivity. In the embodiment, the heat dissipation base 10 is made of metal, and the manufacturing materials thereof include copper, aluminum, nickel, iron, and alloys thereof. The heat dissipation base 10 has a hollow tubular structure, and a cavity 11 is formed therein for receiving the driving power source 30. The two sides of the heat dissipation base 10 are provided with a sliding slot 12 extending in the radial direction of the lamp tube, and the sliding slot 12 is used for fixing the lamp cover 40. A plurality of heat dissipation slots 13 are disposed at the bottom of the heat dissipation base 10. The heat dissipation groove 13 extends radially along the longitudinal direction of the lamp tube, and is used to increase the surface area of the heat dissipation base 10 to improve the heat dissipation effect of the heat dissipation base 10.

The circuit board 20 is disposed outside the heat dissipation base 10. The circuit board 20 is provided with a plurality of light-emitting diodes 21 arranged in a row along the longitudinal direction of the lamp tube and electrically connected to the driving power source 30. A hook portion 14 extending toward the opposite side may be disposed on both sides of the surface of the heat dissipation base 10 as needed. When the circuit board 20 is slidably assembled from one end of the lamp tube to the surface of the heat dissipation base 10, the hook portion 14 can effectively fix the circuit board 20 in the heat dissipation base 10, thereby making the circuit board 20 difficult to The heat sink base 10 is detached.

The driving power source 30 is disposed in the cavity 11 inside the heat dissipation base 10. Referring to FIG. 2 together, the driving power source 30 is connected to the external power source 60 to provide a corresponding driving voltage or driving current for the LEDs 21. The driving power source 30 includes an AC/DC converter 31, a rechargeable battery 32, and a monitoring controller 33. The AC/DC converter 31 is configured to convert an external AC power source such as a commercial power source into a DC power source to supply power to the LEDs 21 . The rechargeable battery 32 and the monitoring controller 33 are also disposed in a cavity inside the heat dissipation base 10. When the external power source 60 is operating normally, the monitoring controller 33 controls the external power source to charge the rechargeable battery 32 while powering the light-emitting diode 21. When the external power source 60 is powered off and fails, the monitoring controller 33 controls the rechargeable battery to supply power to the LED 21 . That is, during the power-off process, the LED lamp 100 will not be directly extinguished due to the power-off of the external power source 60, so that illumination can be continued after the power is turned off.

The lamp cover 40 has an arcuate body 41 and a slide rail 42 extending inwardly from both sides of the arcuate body. The sliding rail 42 is slidably assembled into the sliding slots 12 on both sides of the heat dissipation base 10, so that the lamp cover 40 is fixed on the heat dissipation base 10. The lamp cover 40 is integrally formed of a transparent or translucent material such as polycarbonate (PC) or methyl acrylate. The lamp cover is disposed on the light exit surface of the light emitting diode 21 for adjusting the light emitted by the light emitting diode 21. If necessary, a scattering structure may be formed on the surface of the globe 40 or scattering particles may be incorporated in the globe 40 to improve the uniformity of the light exiting the bulb. Alternatively, the surface of the globe 40 is coated with phosphor powder or the phosphor particles are incorporated into the globe 40 to change the wavelength of the light emitted from the bulb.

The lamp cap 50 is disposed at one end of the lamp tube. The base 50 includes a substantially cylindrical joint 51 and electrode pins 52 projecting from the side of the joint 51. The joint 51 houses the lamp cover 40 and the heat dissipation base 10 together. The electrode pin 52 is electrically connected to the driving power source 30 for connecting the driving power source 30 with the external power source 60.

In the above-described light-emitting diode lamp 100, when the external power source 60 is powered off and fails, the monitoring controller 33 controls the rechargeable battery to supply power to the light-emitting diode 21. That is, the light-emitting diode lamp 100 will not be directly extinguished due to the power-off of the external power source 60, thereby achieving continuous illumination after power-off.

The LED lamp 100 may further include an external switch 70 as needed. The external switch 70 is disposed above the lamp tube and formed in a power supply line between the rechargeable battery 32 and the light emitting diode 21. When the external switch 70 is turned on, the LED device 100 activates the function of supplying power to the LED 21 by using the rechargeable battery 32 after the power is turned off. When the external switch 70 is turned off, the light-emitting diode lamp 100 does not enable the function of supplying power to the light-emitting diode 21 by the rechargeable battery 32 when the external power source 60 is powered off. At this time, when the light-emitting diode lamp 100 is detached from the external power source 60, it can be used as a palm-type light source. The user can turn on or off the external switch 70 to achieve illumination or no illumination of the handheld light source.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

no

21‧‧‧Lighting diode

30‧‧‧Drive power supply

31‧‧‧AC-DC converter

32‧‧‧Rechargeable battery

33‧‧‧Monitoring controller

60‧‧‧External power supply

70‧‧‧External switch

Claims (10)

A light-emitting diode lamp comprises a heat dissipation base, a circuit board disposed on the heat dissipation base, a driving power source and a lamp cover, and a lamp cap disposed at two ends of the lamp tube, wherein the circuit board is provided with a plurality of driving power sources The light-emitting diode of the connection, the lamp head electrically connecting the driving power source and the external power source, wherein the driving power source comprises a rechargeable battery and a monitoring controller, and the charging battery and the monitoring controller are disposed on the heat dissipation base When the external power source is working normally, the monitoring controller controls the external power source to supply the charging diode while charging the charging battery. When the external power source is powered off and fails, the monitoring controller controls the charging battery to emit light. Polar body power supply. The light-emitting diode lamp of claim 1, wherein the light-emitting diode lamp further comprises an external switch disposed on the lamp tube, the external switch being disposed on the rechargeable battery and the light-emitting device. In the power supply line between the diodes, the opening and closing of the external switch respectively represent whether or not the external power source is powered off, and then the rechargeable battery is used to supply the light emitting diode. The light-emitting diode lamp of claim 1, wherein the driving power source further comprises an AC-DC converter, wherein the AC-DC converter converts an external AC power source into a DC power source to be a light-emitting diode. powered by. The light-emitting diode lamp of claim 1, wherein the lamp cover has an arc-shaped body and a slide rail extending inwardly from both sides of the arc-shaped body, and the heat-dissipation base is provided with two sides The sliding slot of the lamp tube extends radially, and the sliding rail of the lamp cover is slidably disposed in the sliding slot of the heat dissipation base to fix the lamp cover on the heat dissipation base. The light-emitting diode lamp of claim 4, wherein the lamp cover is made of polycarbonate or a polyethylene methyl acrylate material. The light-emitting diode lamp of claim 1, wherein the bottom of the heat dissipation base is provided with an accommodation space for accommodating the rechargeable battery and the drive controller. The light-emitting diode lamp of claim 6, wherein the circuit board and the light-emitting diode are disposed at an opposite end of the heat-dissipating base from the rechargeable battery and the driving controller, and the light-emitting diode is The emitted light passes through the lampshade and is emitted to the outside environment. The light-emitting diode lamp of claim 1, wherein the heat dissipation base is made of metal. The light-emitting diode lamp of claim 8, wherein the heat-dissipating base is made of copper, aluminum, nickel, iron and alloys thereof. The light-emitting diode lamp of claim 8, wherein the bottom of the heat dissipation base is provided with a plurality of heat dissipation grooves extending in a radial direction of the lamp tube.