TWI547669B - Light emitting diode device - Google Patents

Description

Light-emitting diode lighting device

The invention relates to a lighting device, in particular to a lighting diode device with adjustable brightness.

A conventional light-emitting diode lamp includes a light board and a light-emitting diode fixed to the light board. Since the brightness of the light-emitting diode on the lamp board is fixed, one cannot adjust the brightness of the light-emitting diode lamp according to actual needs, thereby failing to meet the requirement of adjusting the brightness of the lamp with different lighting requirements.

In view of this, it is necessary to provide a light-emitting diode lighting device with adjustable brightness.

A light-emitting diode lighting device includes a first light-emitting diode module and a second light-emitting diode module, wherein the first light-emitting diode module has a first light-emitting brightness, and the second light-emitting The diode module has a second light-emitting brightness, and the second light-emitting diode module is detachably fixed and electrically connected to the first light-emitting diode module to adjust the brightness of the light-emitting diode device. .

Compared with the conventional light-emitting diode lamp, in the light-emitting diode lighting device of the present invention, the second light-emitting diode module having the second light-emitting brightness is detachably fixed and electrically connected to have The first illuminating brightness of the first illuminating diode module, so that the brightness of the entire illuminating diode illuminating device can be changed, thereby enabling one to adjust the brightness of the luminaire with different lighting requirements.

10‧‧‧First LED Module

11‧‧‧First substrate

13‧‧‧First Light Emitting Diode

15‧‧‧First electrical contact

20‧‧‧Second light-emitting diode module

21‧‧‧second substrate

23‧‧‧Second light-emitting diode

25‧‧‧Second electrical contacts

30‧‧‧ gap

40‧‧‧Brightness adjustment device

100,100'‧‧‧Lighting diode lighting device

1 is a plan view of a light-emitting diode lighting device according to a first embodiment of the present invention.

2 is a cross-sectional view of the light-emitting diode lighting device of FIG. 1 taken along line II-II.

Fig. 3 is a cross-sectional view showing a light-emitting diode lighting device according to a second embodiment of the present invention.

Referring to FIG. 1 and FIG. 2 , the LED device 100 of the first embodiment of the present invention includes a first LED module 10 and a second LED module 20 . The first LED module 10 has a first illumination brightness. The second LED module 20 has a second illumination brightness. The second LED module 20 is detachably fixed and electrically connected to the first LED module 10 to adjust the brightness of the LED illumination device 100.

The first LED module 10 includes a first substrate 11 and a plurality of first LEDs 13 disposed on the first substrate 11 .

The first substrate 11 has a disk shape, and an upper surface thereof is provided with a circuit (not shown). The first LEDs 13 are electrically connected to the circuits on the first substrate 11 respectively. Preferably, the first substrate 11 is a metal-based printed circuit board (Metal Core PCB, MCPCB).

The first light emitting diodes 13 are located on the outer periphery of the upper surface of the first substrate 11 and are spaced apart from each other. Preferably, the first light emitting diode 13 is located on a circumference centered on the center of the upper surface of the first substrate 11. In this embodiment, the number of the first light-emitting diodes 13 is four, and the lines between the first light-emitting diodes 13 form a square. The second LED module 20 is detachably fixed to a middle portion of the square. Of course, the number of the first light-emitting diodes 13 is not limited to four, which can be Make the appropriate adjustments according to actual needs. The first light emitting diode 13 may be one or more of a red light emitting diode, a blue light emitting diode, and a green light emitting diode.

A plurality of first electrical contacts 15 are disposed in a middle portion of the upper surface of the first substrate 11. The first electrical contact 15 is used for fixing and electrically connecting the second LED module 20 to the upper surface of the first substrate 11, and then the second LED module. The group 20 is fixed and electrically connected to the first LED module 10. In this embodiment, the first LED module 10 is connected in parallel with the second LED module 20 .

Preferably, the number of the first electrical contacts 15 is three, and the connection between the first electrical contacts 15 constitutes an equilateral triangle. In this way, the second LED module 20 is more stably fixed and electrically connected to the upper surface of the first substrate 11 . In this embodiment, the first electrical contact 15 is in the form of a sheet, which is made of a conductive magnetic material, such as an alnico magnet.

The second LED module 20 is detachably fixed to the middle of the upper surface of the first LED module 10 and disposed coaxially with the first LED module 10 .

The second LED module 20 includes a second substrate 21 and a plurality of second LEDs 23 disposed on the upper surface of the second substrate 21 .

The second substrate 21 has a disk shape. The thickness of the second substrate 21 is greater than the thickness of the first LED 13 and the second LED 23 . The diameter of the second substrate 21 is smaller than the diameter of the first substrate 11. The plurality of first light emitting diodes 13 surround the periphery of the second substrate 21. Preferably, the second substrate 21 is a metal-based printed circuit board (Metal Core PCB, MCPCB).

The second LEDs 23 are located on the outer periphery of the upper surface of the second substrate 21 and are electrically connected to the circuits on the second substrate 21 respectively. In this embodiment, the second LEDs 23 are spaced apart on a circumference centered on the center of the second substrate 21.

The number of the second light-emitting diodes 23 is four, and the lines between the second light-emitting diodes 23 constitute a square. An angle between a diagonal line of the square surrounded by the second light-emitting diode 23 and a square diagonal line surrounded by the first light-emitting diode 13 is 450.

A plurality of second electrical contacts 25 are disposed on a lower surface of the second substrate 21. The second electrical contacts 25 are disposed in one-to-one correspondence with the first electrical contacts 15 on the upper surface of the first substrate 11 . In this embodiment, the number of the second electrical contacts 25 is three. The second electrical contact 25 is made of a conductive magnetic material, such as an alnico magnet.

The first light-emitting diode module 10 and the second light-emitting diode module 20 are fixed and electrically connected by magnetic attraction between the first electrical contact 15 and the second electrical contact 25 . . In this embodiment, a gap 30 is formed between the lower surface of the second LED module 20 and the upper surface of the first LED module 10 to strengthen the second LED. The air circulation on the surface of the body module 20 and the first LED module 10 enhances the heat dissipation effect.

Of course, the first LED module 10 and the second LED module 20 can also be fixedly and electrically connected by plugging.

For example, the first LED module 10 and the second LED module 20 are hot-swappable through the first electrical contact 15 and the second electrical contact 25 . Connect and separate.

The hot swapping or hot plugging, that is, "hot plugging", refers to plugging or unplugging the second LED module 20 when the first LED module 10 is in operation. . That is, the second light emitting diode module 20 can be inserted or removed without turning off the power supply without turning off the first light emitting diode module 10 without affecting the normal operation of the first light emitting diode module 10. . In this embodiment, the first electrical contact 15 includes a latch, and the second electrical contact 25 corresponding to the first electrical contact 15 has a hole corresponding to the latch. A latch of an electrical contact 15 is inserted into the hole of the second electrical contact 25 to detachably and electrically connect the first LED and the second LED 20 to the second LED 20 together.

Referring to Fig. 3, a light-emitting diode illuminating device 100' in the second embodiment of the present invention further includes a brightness adjusting device 40.

The brightness adjusting device 40 is disposed on the first LED module 10 . The brightness adjusting device 40 can simultaneously adjust the current flowing through the first LED module 10 and the second LED module 20 to adjust the brightness of the two. For example, the brightness adjusting device 40 can simultaneously reduce the current flowing through the first LED module 10 and the second LED module 20, thereby weakening the first LED module. 10 and the brightness of the second LED module 20; the brightness adjusting device 40 can simultaneously increase the current flowing through the first LED module 10 and the second LED module 20 , so that the luminous intensity of both increases. In this embodiment, the brightness adjusting device 40 is a knob switch. When the knob switch is rotated clockwise, the driving currents of the first LED module 10 and the second LED module 20 are driven. When the knob is rotated counterclockwise, the driving current of the first LED module 10 and the second LED module 20 is reduced. The brightness of the light is weakened.

In other embodiments, the brightness adjustment device 40 can also adjust the brightness of the first LED module 10 and the second LED module 20 in opposite directions, such as in enhancing the first illumination. The brightness of the diode module 10 is reduced, and the brightness of the second LED module 20 is weakened; while the brightness of the first LED module 10 is weakened, the second LED module 20 is enhanced. Brightness.

In the light-emitting diode lighting device 100 (100') of the present invention, the second light-emitting diode module 20 having the second light-emitting brightness can be assembled on the first light-emitting diode module 10, and The first LED module 10 having the first illuminating brightness is electrically connected, so that the brightness of the entire illuminating device 100 is adjustable.

In addition, since the first LED module 10 and the second LED module 20 are detachably fixed and electrically connected by magnetic attraction and plugging, the user does not need other assistance. The tool can easily install and separate the two, which improves the convenience of disassembly and maintenance.

In addition, since the first light emitting diode 13 is located at an outer periphery of the light emitting diode illumination device 100 (100'), and because the height of the second substrate 21 is greater than the first light emitting diode 13 The light emitted from the first light-emitting diode 13 toward the second substrate 21 is reflected by the peripheral side surface of the second substrate 21 to the peripheral edge of the light-emitting diode illumination device 100, thereby increasing the peripheral side thereof. The light-emitting intensity of the light-emitting diodes is located in the middle of the light-emitting diode lighting device 100 (100'), and the light emitted by the second light-emitting diodes is mainly concentrated on the light-emitting diode lighting device 100 (100' The middle portion of the light exits, so that the intensity of the light-emitting diode lighting device 100 (100') is uniform in all directions.

In addition, when the brightness adjustment device 40 can adjust the brightness of the first LED module 10 and the second LED module 20 in opposite directions, the LED illumination device When the occasion or environment used by 100 (100') requires a high light intensity in the lateral direction of the circumference, the luminous intensity of the first light-emitting diode 13 can be enhanced and the light emission of the second light-emitting diode 23 can be weakened. Intensity; conversely, when the light-emitting diode illuminating device 100 (100') is used in a situation or environment where the light intensity in the middle portion is high, the illuminating intensity of the second illuminating diode 23 can be enhanced at this time, and The luminous intensity of the first light-emitting diode 13 is weakened. In this way, the illuminating intensity of the first illuminating diode 13 and the second illuminating diode 23 can be adjusted according to the demand for light in different environments, without operating both at a higher illuminating intensity. Therefore, the service life can be extended to a certain extent.

It is to be understood that those skilled in the art can make various other changes and modifications in accordance with the technical concept of the present invention, and all such changes and modifications should fall within the scope of the claims of the present invention.

11‧‧‧First substrate

13‧‧‧First Light Emitting Diode

15‧‧‧First electrical contact

21‧‧‧second substrate

23‧‧‧Second light-emitting diode

25‧‧‧Second electrical contacts

30‧‧‧ gap

Claims (9)

A light-emitting diode lighting device includes a first light-emitting diode module and a second light-emitting diode module, wherein the first light-emitting diode module has a first light-emitting brightness, and the second light-emitting The first LED module includes a first substrate, a plurality of first LEDs disposed on an outer periphery of the upper surface of the first substrate, and the second illumination The diode module includes a second substrate and a plurality of second light emitting diodes disposed in a middle portion of the upper surface of the second substrate, wherein the second light emitting diode module is surrounded by the first light emitting diode. The second substrate has a height greater than a thickness of the first LED and reflects light, and the second LED module is detachably fixed to the first LED module, and The first light emitting diode module is electrically connected to adjust the brightness of the light emitting diode illumination device. The illuminating diode device of claim 1, wherein the second illuminating diode module is fixedly and electrically connected to the first illuminating diode module by magnetic attraction. The illuminating diode illuminating device of claim 2, wherein the first illuminating diode module has a plurality of first electrical contacts, and the second illuminating diode module has a plurality of a first electrical contact corresponding to the second electrical contact, the first electrical contact and the second electrical contact are each composed of a conductive magnetic material, the first LED module and The second LED module is fixed and electrically connected by a magnetic attraction between the first electrical contact and the second electrical contact. The illuminating diode lighting device of claim 3, wherein the first electrical contact and the second electrical contact are each composed of an alnico magnet. The illuminating diode lighting device of claim 4, wherein: the number of the first electrical contact and the second electrical contact is three, and the first electrical contact is between Connection and said The lines between the second electrical contacts respectively form a triangle. The illuminating diode illuminating device of claim 1, wherein the second illuminating diode module is plugged into the first illuminating diode module. The illuminating diode illuminating device of claim 6, wherein the second illuminating diode module and the first illuminating diode module are connected by hot plugging Separation. The illuminating diode illuminating device of claim 7, wherein the first illuminating diode module comprises a plurality of first electrical contacts, and the second illuminating diode module comprises a plurality of a second electrical contact, the first electrical contact includes a latch, the second electrical contact includes a hole, and the latch of the first electrical contact is inserted into the second electrical connection The hole is in the hole, so that the first LED module and the second LED module are fixedly and electrically connected. The illuminating diode illuminating device of claim 1, wherein the second illuminating diode module is connected in parallel with the first illuminating diode module.