LIGHTING APPARATUS

Abstract

A lighting apparatus includes a light source plate, multiple light modules and a driver. Multiple light modules are placed on the light source plate. Each light module includes a LED package and a lens. The LED package includes multiple sections. At least a LED unit is placed in each section. Each section has a pair of corresponding LED electrodes. The driver is electrically connected to the LED electrodes for supplying an adjustable ratio of separate driving currents to the LED electrodes to generate a required light parameter by mixing multiple lights emitted by the LED units disposed in the sections of the light modules. The lens has multiple lens areas for guiding lights of different sections in each light module to generate a mixed light via the lens.

Claims

1. A lighting apparatus, comprising: a light source plate; multiple light modules placed on the light source plate, wherein each light module comprises a LED package and a lens, wherein the LED package comprises multiple sections, wherein at least a LED unit is placed in each section, wherein each section has a pair of corresponding LED electrodes; and a driver electrically connected to the LED electrodes for supplying an adjustable ratio of separate driving currents to the LED electrodes to generate a required light parameter by mixing multiple lights emitted by the LED units disposed in the sections of the light modules, wherein the lens has multiple lens areas for guiding lights of different sections in each light module to generate a mixed light via the lens.

2. The lighting apparatus of claim 1, wherein the LED package has a first section and a second section, wherein a first LED unit is placed in the first section covered with a first fluorescent layer, a second LED unit is place in the second section covered with a second fluorescent layer, wherein the first fluorescent layer and the second fluorescent layer have different compositions.

3. The lighting apparatus of claim 2, wherein the LED package has a package housing and a spacer wall, wherein the spacer wall separates the first section and the second section.

4. The lighting apparatus of claim 2, wherein the packaging housing has tilt bases for respectively placing the first LED unit and the second LED unit so that lights of the first LED unit and the second LED unit overlaps more than 50 percent in the lens.

5. The lighting apparatus of claim 2, wherein the first LED unit has at least one first type LED chip and one second type LED chip, wherein the second LED unit has at least one first type LED chip and one second type LED chip, wherein the driver adjusts the adjustable ratio of separate driving currents to generate the required light parameter.

6. The lighting apparatus of claim 2, wherein the LED package has a circular external shape.

7. The lighting apparatus of claim 6, wherein the first section is semi-circular shape and the second section is semi-circular shape.

8. The lighting apparatus of claim 2, wherein the light module has an aligning structure for aligning the lens with the LED package.

9. The lighting apparatus of claim 2, wherein the lens has a convex external curve surface.

10. The lighting apparatus of claim 9, wherein the lens has a concave curve inner dome facing to the LED package.

11. The lighting apparatus of claim 2, wherein the lens has multiple micro lenses for guiding lights of different sections to generate the mixed light via the lens.

12. The lighting apparatus of claim 1, wherein the lens has a package connector for aligning and coupling the LED package.

13. The lighting apparatus of claim 1, wherein the light source plate has multiple grooves for placing multiple light strips, the multiple light modules are placed on the light strips.

14. The lighting apparatus of claim 13, further comprising a light passing cover connected to the light source plate forming a container for enclosing the multiple light modules.

15. The lighting apparatus of claim 14, wherein the light passing cover has multiple cover lenses corresponding to the multiple light strips.

16. The lighting apparatus of claim 13, wherein the light strips are detachable to be replaced from the light source plate.

17. The lighting apparatus of claim 13, wherein the lens has a plugging structure for plugging on the light strip.

18. The lighting apparatus of claim 17, wherein the LED package is electrically connected to the driver when the lense is plugged on the light strip.

19. The lighting apparatus of claim 1, wherein the sections of the light modules are divided into a first group and a second group, wherein the LED electrodes of the sections of the first group and the LED electrodes of the sections of the second group are separately electrically connected to the driver.

20. The lighting apparatus of claim 19, wherein the first group is connected to a first connector and the second group is connected to a second connector, the driver determines types of the first connector and the second connector to supply corresponding driving currents to the first group and the second group separately.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0048] FIG. 1 illustrates a LED package example.

[0049] FIG. 2 illustrates a package housing example in FIG. 1.

[0050] FIG. 3 illustrates a top view of a LED package example.

[0051] FIG. 4 illustrates a light module example.

[0052] FIG. 5 illustrates a top view of the example in FIG. 4.

[0053] FIG. 6 illustrates a panel light device example.

[0054] FIG. 7 illustrates a lighting apparatus embodiment.

[0055] FIG. 8 illustrates a light mixing scheme.

[0056] FIG. 9 illustrates a driver connection example.

[0057] FIG. 10 illustrates a structure of another embodiment.

DETAILED DESCRIPTION

[0058] In FIG. 7, a lighting apparatus includes a light source plate 621, multiple light modules 631 and a driver 622. In FIG. 7, the light source plate 621 is illustrated with a minimized form for explaining the relation among components, not the actual ratio among components.

[0059] Multiple light modules 631 are placed on the light source plate 621. In some embodiments, the light modules 631 are integrated on light strips placed on a plate as shown in FIG. 6.

[0060] Each light module 631 includes a LED package 603 and a lens 606.

[0061] The LED package 603 includes multiple sections, e.g. a first section 601 and a second section 602.

[0062] At least a LED unit is placed in each section. The LED unit may have one or more LED chips. For example, the LED unit in the first section 601 has a first type LED chip 608 and a second type LED chip 609. The LED unit in the second section 602 has a first type LED chip 611 and a second LED type chip 610. The first type LED chip may have a different color temperature as the second type LED chip. But, the first type LED chip in the first section 601 may have a smaller size than the second type LED chip in the second section 602.

[0063] By changing a relative ratio of driving currents supplied to the first section and the second section, a different color temperature is obtained.

[0064] Each section 601, 602 has a pair of corresponding LED electrodes 623, 624 so that the two sections are controlled separately by the driver 622. For example, the driver 622 may supply different driving currents volumes to the two sections 601, 602 to mix a required light parameter.

[0065] The driver is electrically connected to the LED electrodes for supplying an adjustable ratio of separate driving currents to the LED electrodes to generate a required light parameter by mixing multiple lights emitted by the LED units disposed in the sections of the light modules 631.

[0066] The lens has multiple lens areas for guiding lights of different sections in each light module to generate a mixed light via the lens.

[0067] FIG. 8 shows an example of mixing lights by a lens. In FIG. 8, two LED units 701, 702 emit lights 703, 704 with an overlapping angles. The lens 705 further guides direction of the light 703, 704 to lights 706, 707, 708, 709 to diffuse and mix the lights 703, 704 evenly.

[0068] In some embodiments, the LED package has a first section and a second section.

[0069] In FIG. 7, a first LED unit is placed in the first section covered with a first fluorescent layer 651. A second LED unit is place in the second section 602 covered with a second fluorescent layer 652.

[0070] The first fluorescent layer 651 and the second fluorescent layer 652 have different compositions. For example, different chemical fluorescent material are filled in the first section 601 and the second section 602 to get required output light parameters.

[0071] In some embodiments, the LED package 603 has a package housing 6031 and a spacer wall 6032.

[0072] The spacer wall 6032 separates the first section 601 and the second section 602.

[0073] In some embodiments, the packaging housing has tilt bases 635 for respectively placing the first LED unit and the second LED unit so that lights of the first LED unit and the second LED unit overlaps more than 50 percent in the lens. In other words, most of lights are overlapped in the lens 606.

[0074] In some embodiments, the first LED unit has at least one first type LED chip and one second type LED chip.

[0075] The second LED unit has at least one first type LED chip and one second type LED chip.

[0076] The driver adjusts the adjustable ratio of separate driving currents to generate the required light parameter.

[0077] In some embodiments, the LED package has a circular external shape, as shown in FIG. 4 and FIG. 5.

[0078] In some embodiments, the first section is semi-circular shape and the second section is semi-circular shape, as shown in FIG. 5.

[0079] In some embodiments, the light module has an aligning structure 605 for aligning the lens with the LED package. For example, the LED package has a structure protruding pin and the lens has a socket corresponding to the protruding pin to align the lens and the LED package so as to diffuse light as planned.

[0080] In some embodiments, the lens has a convex external curve surface 607, e.g. the top exterior surface of the lens 606.

[0081] In some embodiments, the lens has a concave curve inner dome 608 facing to the LED package.

[0082] In some embodiments, the lens has multiple micro lenses 661 for guiding lights of different sections to generate the mixed light via the lens. Specifically, the lens may have a different way of design, by placing multiple micro lenses to guide lights in various directions.

[0083] In some embodiments, the lens has a package connector for aligning and coupling the LED package, like the aligning structure 605, but may have an attaching structure to combine the two components.

[0084] In some embodiments, the light source plate has multiple grooves for placing multiple light strips, the multiple light modules are placed on the light strips, as shown in FIG. 6. There is a light source plate 201 with grooves as an array for placing light strips 202 mounted with light modules 100.

[0085] In FIG. 10, the lighting apparatus may also include a light passing cover 781 connected to the light source plate 782 forming a container for enclosing the multiple light modules.

[0086] In some embodiments, the light passing cover has multiple cover lenses 784 corresponding to the multiple light strips 783.

[0087] In some embodiments, the light strips are detachable to be replaced from the light source plate. For example, the light strip may have a plug structure like a traditional light tube.

[0088] In some embodiments, the lens has a plugging structure for plugging on the light strip.

[0089] In some embodiments, the LED package is electrically connected to the driver when the lense is plugged on the light strip.

[0090] In some embodiments, the sections of the light modules are divided into a first group and a second group.

[0091] The LED electrodes of the sections of the first group and the LED electrodes of the sections of the second group are separately electrically connected to the driver.

[0092] In FIG. 9, the LED units in the first group are integrated to the first connector 804. The LED units in the second group are integrated to the second connector 805.

[0093] In some embodiments, the first group is connected to a first connector and the second group is connected to a second connector.

[0094] The driver determines types of the first connector and the second connector to supply corresponding driving currents to the first group and the second group separately. The driver 801 is connected to the first connector 804 with a first terminal 802. The drive 801 is connected to the second connector 805 with the second terminal 803.

[0095] The driver 801 checks the type of the first connector 804 and the second connector 805 so as to determine a corresponding driving scheme to generate corresponding driving currents to the first group and the second group of LED units to mix a required light parameter.

[0096] The foregoing description, for purpose of explanation, has been described with reference to specific embodiments. However, the illustrative discussions above are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in view of the above teachings.

[0097] Please refer to FIG. 1. In FIG. 1, a LED package 10 has a space wall 30 to divide the LED package into a first section 41 and a second section 42. A first fluorescent layer and a second fluorescent layer are filled in the concave containers of the first section 41 and the second section 42. There are LED units 20 placed in the first section 41 and the second section 42. The LED units in the two sections respectively have two LED chips 21.

[0098] FIG. 2 show a different view of the example in FIG. 1. The same reference numerals in following drawings refer to the same components and may not be repeated for brevity.

[0099] In FIG. 2, the first section has a concave area 111 and the second section has a concave area 112 to be filled with fluorescent layers.

[0100] FIG. 3 shows a top view of the example in FIG. 1 and FIG. 2.

[0101] The two sections respectively have a positive electrode 901 and a negative electrode 902 so as to receive driving currents separately to change a relative ratio for getting a required mixed light parameter.

[0102] FIG. 4 shows a lens 50 with a dorm area 53 for placing the LED package 10. The lens has a concave curve surface 52 for diffusing and mixing lights of different sections of the LED package 10. The lens has a top exterior curve surface 51 for further diffusing the mixed lights.

[0103] FIG. 5 shows a top view of the lens 50.

[0104] FIG. 6 shows a light source plate with multiple grooves 961 for placing multiple light strips 202. Each light strip has light modules 100.

[0105] The embodiments were chosen and described in order to best explain the principles of the techniques and their practical applications. Others skilled in the art are thereby enabled to best utilize the techniques and various embodiments with various modifications as are suited to the particular use contemplated.

[0106] Although the disclosure and examples have been fully described with reference to the accompanying drawings, it is to be noted that various changes and modifications will become apparent to those skilled in the art. Such changes and modifications are to be understood as being included within the scope of the disclosure and examples as defined by the claims.