CN102022628B - LED lighting device - Google Patents

Abstract

The invention relates to a light emitting diode lighting device, which comprises a plurality of first light emitting areas, at least one second light emitting area, a plurality of first light emitting units and at least one second light emitting unit, wherein the first light emitting units and the second light emitting units are respectively arranged on the first light emitting areas and the at least one second light emitting area. Therefore, the light-emitting units with different light intensities are used for mixing the light intensities, so that the whole light-emitting diode lighting device can provide a stable and uniform light-emitting source.

Description

LED lighting device

technical field

The invention relates to a lighting device, in particular to providing a stable light source by jointly driving at least two light-emitting diode light-emitting units with special arrangement and different power.

Background technique

In the prior art, bulbs or fluorescent tubes are used for lighting. Although it is very convenient to use light bulbs or fluorescent tubes at present, the high heat energy and high energy loss caused by the lighting are the disadvantages of using light bulbs or fluorescent tubes as lighting.

With the increasing awareness of environmental protection and energy saving, it is necessary to find devices and equipment that can replace the above-mentioned traditional lighting. Today's white light-emitting diodes solve the above-mentioned shortcomings, but using light-emitting diodes as lighting has produced other new shortcomings. The uneven brightness generated by the lighting (i.e. showing a periodic arrangement of bright-dark), or the phenomenon of overlapping images (also known as ghosting), which is easy to cause fatigue and discomfort to the user's eyes. comfortable phenomenon.

Contents of the invention

The object of the present invention is to provide an LED lighting device for mixing the light emitted by the LEDs to reduce the phenomenon of ghosting.

To achieve the above purpose, the LED lighting device provided by the present invention includes: a substrate with a plurality of first light emitting regions and at least one second light emitting region, each second light emitting region is pinched by two adjacent first light emitting regions In the center, the first light-emitting regions and the at least one second light-emitting region are arranged in strips; a plurality of first light-emitting units are arranged on the first light-emitting regions, so that each first light-emitting region has a A first light-emitting unit; at least one second light-emitting unit, arranged on the at least one second light-emitting area, so that each second light-emitting area has a second light-emitting unit; and a driving module, used to drive the first light-emitting units unit and the at least one second light-emitting unit; wherein, each first light-emitting unit includes a plurality of light-emitting diodes, each second light-emitting unit includes one light-emitting diode, and the drive module provides the first light-emitting unit and the Different driving currents for the second light emitting unit.

Therefore, light mixing by light-emitting units with different light intensities and/or different arrangements can make the light emitted by the LED lighting device as a whole uniform, thereby reducing the phenomenon of ghost images and making the user's eyes less prone to fatigue .

Description of drawings

FIG. 1 is a schematic diagram of an LED lighting device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the LED lighting device according to the first embodiment of the present invention.

FIG. 3 is a schematic diagram of an LED lighting device according to a second embodiment of the present invention.

FIG. 4 is a schematic diagram of an LED lighting device according to a third embodiment of the present invention.

FIG. 5 is a schematic diagram of an LED lighting device according to a fourth embodiment of the present invention.

FIG. 6 is a schematic diagram of an LED lighting device according to a fifth embodiment of the present invention.

FIG. 7 is a schematic diagram of an LED lighting device according to a sixth embodiment of the present invention.

[Description of main component symbols]

1 LED lighting device

10 Substrate

12 The first light-emitting module

14 Second light-emitting module

16 drive module

102 The first luminous area

104 Second luminous area

122 The first light-emitting unit

142 Second light emitting unit

Idf the first drive current

d length

w width

Ids Second drive current

α the first luminous angle

Lf the first light source

β second light emitting angle

Ls Second light source

2 Lumens

Detailed ways

In order to fully understand the purpose, characteristics and effects of the present invention, now through the following specific embodiments, and cooperate with the accompanying drawings, the present invention is described in detail, as follows:

Referring to FIG. 1 , it is a schematic diagram of an LED lighting device according to a first embodiment of the present invention. In this embodiment, the LED lighting device 1 includes a substrate 10 and a driving module 16 . The substrate 10 has a plurality of light-emitting regions, such as the first light-emitting region 102 and the second light-emitting region 104 shown in FIG. There is a second light emitting unit 142 . Wherein, the first light emitting unit 122 includes a plurality of light emitting diodes, and the second light emitting unit includes one light emitting diode. For the purpose of light mixing, as shown in FIG. 1 , the second light emitting region 104 is squeezed in the center by two adjacent first light emitting regions 102, so that the two first light emitting regions 102 and the second light emitting region 104 are arranged In addition, each light-emitting diode in the first light-emitting unit 122 and the light-emitting diode in the second light-emitting unit 142 have different light-emitting power values. Preferably, each light-emitting diode in the second light-emitting unit 142 emits light The driving current of the diodes is at least 10 times the driving current of each light emitting diode in the first light emitting unit 122 , such as 10, 11, 12, 13, 14, 15 times, etc., preferably 14 times. For example, the driving current of the light emitting diodes in the second light emitting unit 142 is 350mA (milliamperes), and the driving current of the light emitting diodes in the first light emitting unit 122 is 25mA (milliamperes). In the above, the difference between the low-power light-emitting unit and the high-power light-emitting unit can be achieved by using light-emitting diode components with different characteristics and/or applying different driving currents to the above-mentioned light-emitting diodes to generate low-power and high-power light-emitting sources. Wherein, the first light emitting unit 122 and the second light emitting unit 142 may be white light emitting diodes. The driving module 16 is used to drive the first light emitting unit 122 and the second light emitting unit 142 . In addition, in a preferred embodiment, the distance between the first light emitting unit 122 and the second light emitting unit 142 may be 2 cm.

For example, the driving module 16 can provide the first driving current Idf for driving the first light emitting unit 122 , and provide the second driving current Ids for driving the second light emitting unit 142 . For example, when the driving module 16 drives the first light emitting unit 122 , the range of the driving current generated by it is about 16-30mA (milliampere). In addition, in a preferred embodiment, the first light-emitting unit 122 with about 30-60 light-emitting diodes in the first light-emitting region 102 can be driven separately by using the driving current generated above, and each light-emitting diode is about It can produce a luminous intensity value (Luminous intensity) of 1000-2400mcd (millicandlepower, which means that the luminous intensity originates from a unit area), and 1000-2400mcd is about a luminous flux value (Luminous Flux) of 4.7-5.7Lm. Preferably, the first light emitting units 122 are collectively arranged in the first light emitting region 102 whose length d is 10-20 cm and width w is 2 cm. Moreover, the driving module 16 also provides the second driving current Ids to drive the second light-emitting unit 142, and the range of the driving current generated by it is about 160mA (milliampere), and uses the above-mentioned driving current to drive the second light-emitting unit 142. The second light-emitting unit 142 is such that the light-emitting diodes therein produce a luminous flux value of about 40-80Lm. In the above, it can be clearly understood that the present invention utilizes different light-emitting units and/or the light-emitting diode lighting device shared by the high/low-power light-emitting units produced by their drive currents to perform light mixing, and the present invention is useful for light-emitting The arrangement of the number and distance of the units enables the light emitted by the high and low power light-emitting units to be mixed into uniform light to reduce the ghost phenomenon.

Referring to FIG. 2 , it is a cross-sectional view of the LED lighting device according to the first embodiment of the present invention. In this embodiment, the first light-emitting module 12 is disposed on the substrate 10, and is used to generate the first light-emitting source Lf having a first light-emitting angle α; and the second light-emitting module 14 is disposed on the substrate 10, and is used to generate A second light source Ls with a second light angle β. Preferably, the range of the first light-emitting angle α may be selected from one of 60 degrees to 140 degrees, and the range of the second light-emitting angle β may be selected from one of 60 degrees to 180 degrees. Here, the lumen 2 of the LED lighting device is the total lumen value of combining the lumen of the first light source Lf with the first light angle α and the light lumen of the second light source Ls with the second light angle β. Wherein, each light emitting diode in each first light emitting unit is used to generate a light intensity value of 1300mcd to 2200mcd, and each light emitting diode in each second light emitting unit is used to generate a luminous flux value of 40 to 58Lm.

Referring to FIG. 3 to FIG. 7 , they are schematic diagrams of LED lighting devices according to various embodiments of the present invention. In these embodiments, the LED lighting device respectively includes a plurality of light emitting regions, which can distinguish the plurality of first light emitting regions 102 and the plurality of second light emitting regions 104 . Wherein, the first light emitting unit 122 is disposed in the first light emitting region 102 , and the second light emitting unit 142 is disposed in the second light emitting region 104 .

Referring to the second embodiment of the light-emitting diode lighting device in FIG. 3 , the first light-emitting unit 122 includes 120 light-emitting diodes, and is evenly arranged in the first light-emitting regions 102 on the substrate 10, that is, in each first light-emitting region 102 respectively Thirty first light-emitting units 122 are arranged in a grounded manner, and are concentrated in the first light-emitting region 102 with a length d of 14 cm and a width w of 2 cm. In addition, the second light emitting units 142 include three light emitting diodes, and are evenly arranged between the first light emitting regions 102 formed by the first light emitting units 122 . In this embodiment, each LED in the first light emitting unit 122 of the first light emitting region 102 generates 1800 mcd, and each second light emitting unit 142 in the second light emitting region 104 generates 47 Lm. In addition, the first light-emitting angle α and the second light-emitting angle β are respectively 120 degrees.

Referring to the third embodiment of the light-emitting diode lighting device in FIG. Each of the first light-emitting units 122 is provided with 33 light-emitting diodes, and they are concentrated in the first light-emitting region 102 whose length d is 12 cm and width w is 2 cm. In addition, the second light emitting units 142 include three light emitting diodes, and are evenly arranged between the first light emitting regions 102 formed by the first light emitting units 122 . In this embodiment, each LED in the first light emitting unit 122 of the first light emitting region 102 generates 1500 mcd, and each LED in the second light emitting unit 142 of the second light emitting region 104 generates 45 Lm. In addition, the first light-emitting angle α and the second light-emitting angle β are respectively 120 degrees.

Referring to the fourth embodiment of the light-emitting diode lighting device in FIG. Each of the first light-emitting units 122 is provided with 55 light-emitting diodes, and they are concentrated in the first light-emitting area 102 whose length d is 18 cm and width w is 2 cm. In addition, the second light emitting units 142 include four light emitting diodes, and are evenly arranged between the first light emitting regions 102 formed by the first light emitting units 122 . In this embodiment, each LED in the first light emitting unit 122 of the first light emitting region 102 generates 1900mcd, and each LED in the second light emitting unit 142 of the second light emitting region 104 generates 47Lm. In addition, the first light-emitting angle α and the second light-emitting angle β are respectively 120 degrees.

Referring to the fifth embodiment of the light-emitting diode lighting device in FIG. 6 , the first light-emitting unit 122 includes 220 light-emitting diodes, and is evenly arranged in the first light-emitting regions 102 on the substrate 10, that is, in each first light-emitting region 102 Each of the first light-emitting units 122 is provided with 44 light-emitting diodes, and they are concentrated in the first light-emitting region 102 whose length d is 20 cm and width w is 2 cm. In addition, the second light emitting units 142 include four light emitting diodes, and are evenly arranged between the first light emitting regions 102 formed by the first light emitting units 122 . In this embodiment, each LED in the first light emitting unit 122 of the first light emitting region 102 generates 2200mcd, and each LED in the second light emitting unit 142 of the second light emitting region 104 generates 58Lm. In addition, the first light-emitting angle α and the second light-emitting angle β are respectively 120 degrees.

Referring to the sixth embodiment of the light-emitting diode lighting device shown in FIG. 7, the first light-emitting unit 122 includes 148 light-emitting diodes, and is unevenly arranged on the first light-emitting region 102 on the substrate 10, that is, the first light-emitting There are five units 122, which include: three first light-emitting units 122 each composed of 28 light-emitting diodes, and two first light-emitting units 122 each composed of 32 light-emitting diodes, wherein 32 light-emitting diodes The composed first light-emitting unit is arranged outside the first light-emitting unit composed of 28 light-emitting diodes, and each of the above-mentioned first light-emitting units 122 is concentrated in each corresponding first light-emitting unit with a length d of 10 cm and a width w of 2 cm. In a light-emitting area 102 . In addition, the substrate 10 has four second light-emitting regions 104 and corresponding four second light-emitting units 142, each second light-emitting unit 142 includes one light-emitting diode, and each second light-emitting unit 142 is evenly arranged between the first light emitting regions 102 . In this embodiment, each LED in each first light emitting unit 122 of the first light emitting region 102 generates 1300mcd, and each LED in the second light emitting unit 142 of the second light emitting region 104 generates 40Lm. In addition, the first light-emitting angle α and the second light-emitting angle β are respectively 60 degrees.

The present invention has been described above with preferred embodiments, but those skilled in the art should understand that the embodiments are only used to describe the present invention, and should not be construed as limiting the scope of the present invention. It should be noted that all changes and substitutions equivalent to this embodiment should be included in the scope of the present invention. Therefore, the protection scope of the present invention should be defined by the claims.

Claims (36)

1. a light emitting diode illuminating apparatus is characterized in that, comprises:

One substrate has a plurality of first light-emitting zones and at least one second light-emitting zone, and each second light-emitting zone in central authorities, is arranged in strip and make those first light-emitting zones reach this at least one second light-emitting zone by 2 first adjacent light-emitting zone pinchings;

A plurality of first luminescence units are located on those first light-emitting zones, make each first light-emitting zone have one first luminescence unit;

At least one second luminescence unit is located on this at least one second light-emitting zone, makes each second light-emitting zone have one second luminescence unit; And

One driver module is in order to drive those first luminescence units and this at least one second luminescence unit;

Wherein, each first luminescence unit comprises a plural number light emitting diode, and each second luminescence unit comprises a light emitting diode, and this driver module provides this first luminescence unit and the different drive current of this second luminescence unit respectively.

2. lighting device as claimed in claim 1 is characterized in that, the drive current of each light emitting diode in this second luminescence unit is at least ten times of drive current of each light emitting diode in first luminescence unit.

3. light emitting diode illuminating apparatus as claimed in claim 2 is characterized in that, the luminous angle of each light emitting diode in this first luminescence unit is selected from the one of which angle in 60 degree to 140 degree.

4. light emitting diode illuminating apparatus as claimed in claim 3 is characterized in that, the luminous angle of the light emitting diode in this second luminescence unit is selected from the one of which angle in 60 degree to 180 degree.

5. light emitting diode illuminating apparatus as claimed in claim 4; It is characterized in that; Each light emitting diode in each first luminescence unit is in order to producing the light intensity value of 1300mcd to 2200mcd, and the light emitting diode in each second luminescence unit is in order to produce 40 to 58Lm light flux values.

6. light emitting diode illuminating apparatus as claimed in claim 5 is characterized in that, those first luminescence units comprise 120 light emitting diodes altogether, and on average is arranged on those first light-emitting zones.

7. light emitting diode illuminating apparatus as claimed in claim 6 is characterized in that, each first luminescence unit comprises 30 light emitting diodes.

8. light emitting diode illuminating apparatus as claimed in claim 7 is characterized in that, this substrate has three second light-emitting zones and three second corresponding luminescence units thereof, and each second luminescence unit respectively comprises 1 light emitting diode.

9. light emitting diode illuminating apparatus as claimed in claim 8 is characterized in that, the luminous angle of the light emitting diode in this first and second luminescence unit is 120 degree.

10. light emitting diode illuminating apparatus as claimed in claim 9; It is characterized in that; Each light emitting diode in each first luminescence unit is in order to the light intensity value of generation 1800mcd, and the light emitting diode in each second luminescence unit is in order to produce the light flux values of 47Lm.

11. light emitting diode illuminating apparatus as claimed in claim 10 is characterized in that, the length of each first light-emitting zone is 14 centimeters, and width is 2 centimeters.

12. light emitting diode illuminating apparatus as claimed in claim 5 is characterized in that, those first luminescence units comprise 132 light emitting diodes altogether, and on average are arranged on those first light-emitting zones.

13. light emitting diode illuminating apparatus as claimed in claim 12 is characterized in that, each first luminescence unit comprises 33 light emitting diodes.

14. light emitting diode illuminating apparatus as claimed in claim 13 is characterized in that, this substrate has three second light-emitting zones and three second corresponding luminescence units thereof, and each second luminescence unit respectively comprises 1 light emitting diode.

15. light emitting diode illuminating apparatus as claimed in claim 14 is characterized in that, the luminous angle of the light emitting diode in this first and second luminescence unit is 120 degree.

16. light emitting diode illuminating apparatus as claimed in claim 15; It is characterized in that; Each light emitting diode in each first luminescence unit is in order to the light intensity value of generation 1500mcd, and the light emitting diode in each second luminescence unit is in order to produce the light flux values of 45Lm.

17. light emitting diode illuminating apparatus as claimed in claim 16 is characterized in that, the length of each first light-emitting zone is 12 centimeters, and width is 2 centimeters.

18. light emitting diode illuminating apparatus as claimed in claim 5 is characterized in that, those first luminescence units comprise 275 light emitting diodes altogether, and on average are arranged on those first light-emitting zones.

19. light emitting diode illuminating apparatus as claimed in claim 18 is characterized in that, each first luminescence unit comprises 55 light emitting diodes.

20. light emitting diode illuminating apparatus as claimed in claim 19 is characterized in that, this substrate has four second light-emitting zones and four second corresponding luminescence units thereof, and each second luminescence unit respectively comprises 1 light emitting diode.

21. light emitting diode illuminating apparatus as claimed in claim 20 is characterized in that, the luminous angle of the light emitting diode in this first and second luminescence unit is 120 degree.

22. light emitting diode illuminating apparatus as claimed in claim 21; It is characterized in that; Each light emitting diode in each first luminescence unit is in order to the light intensity value of generation 1900mcd, and the light emitting diode in each second luminescence unit is in order to produce the light flux values of 47Lm.

23. light emitting diode illuminating apparatus as claimed in claim 22 is characterized in that, the length of each first light-emitting zone is 18 centimeters, and width is 2 centimeters.

24. light emitting diode illuminating apparatus as claimed in claim 5 is characterized in that, those first luminescence units comprise 220 light emitting diodes altogether, and on average are arranged on those first light-emitting zones.

25. light emitting diode illuminating apparatus as claimed in claim 24 is characterized in that, each first luminescence unit comprises 44 light emitting diodes.

26. light emitting diode illuminating apparatus as claimed in claim 25 is characterized in that, this substrate has four second light-emitting zones and four second corresponding luminescence units thereof, and each second luminescence unit respectively comprises 1 light emitting diode.

27. light emitting diode illuminating apparatus as claimed in claim 26 is characterized in that, the luminous angle of the light emitting diode in this first and second luminescence unit is 120 degree.

28. light emitting diode illuminating apparatus as claimed in claim 27; It is characterized in that; Each light emitting diode in each first luminescence unit is in order to the light intensity value of generation 2200mcd, and the light emitting diode in each second luminescence unit is in order to produce the light flux values of 58Lm.

29. light emitting diode illuminating apparatus as claimed in claim 28 is characterized in that, the length of each first light-emitting zone is 20 centimeters, and width is 2 centimeters.

30. light emitting diode illuminating apparatus as claimed in claim 5 is characterized in that, those first luminescence units comprise 148 light emitting diodes altogether, and non-on average being arranged on those first light-emitting zones.

31. light emitting diode illuminating apparatus as claimed in claim 30; It is characterized in that; Those first luminescence units have five altogether, and it comprises: three each first luminescence units of being made up of 28 light emitting diodes, and two each first luminescence units of being made up of 32 light emitting diodes.

32. light emitting diode illuminating apparatus as claimed in claim 31 is characterized in that, first luminescence unit of being made up of 32 light emitting diodes is arranged in the outside of first luminescence unit of being made up of 28 light emitting diodes.

33. light emitting diode illuminating apparatus as claimed in claim 32 is characterized in that, this substrate has four second light-emitting zones and four second corresponding luminescence units thereof, and each second luminescence unit respectively comprises 1 light emitting diode.

34. light emitting diode illuminating apparatus as claimed in claim 33 is characterized in that, the luminous angle of the light emitting diode in this first and second luminescence unit is 60 degree.

35. light emitting diode illuminating apparatus as claimed in claim 34; It is characterized in that; Each light emitting diode in each first luminescence unit is in order to the light intensity value of generation 1300mcd, and the light emitting diode in each second luminescence unit is in order to produce the light flux values of 40Lm.

36. light emitting diode illuminating apparatus as claimed in claim 35 is characterized in that, the length of each first light-emitting zone is 10 centimeters, and width is 2 centimeters.

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