TWI362465B - Illumination device - Google Patents

Description

1362465. -* [0001] [0002] [0003] [0004] 098107344 100. December 15th according to the replacement page invention: [Technical Field] The present invention relates to a lighting device, and more particularly to a Lighting devices of different color lights. [Prior Art] Light Emitting Diode (LED) has the advantages of high brightness, low operating voltage, low power consumption, easy matching with integrated circuits, simple driving, long life, etc., so it is widely used as an ideal light source. For the previous illumination venues, see, for example, Joseph Bielecki et al., Literature 2007 IEEE, 23rd IEEE SEMI-THERM Symposium, Thermal Considerations for LED Components in an Automotive Lamp. In previous illumination devices, a rich illumination effect can be obtained by combining a plurality of light-emitting diodes to emit different color lights. Such illumination devices generally achieve the purpose of emitting different colors of light by controlling the energization time of the plurality of light-emitting diodes that emit a single color of light to cause the plurality of light-emitting diodes to alternately emit light. However, in order to control the energization time of the plurality of light-emitting diodes, a relatively complicated driving circuit needs to be correspondingly designed, which increases the difficulty of designing the lighting device and is not conducive to the use of the lighting device. [Invention] It is necessary to provide a lighting device that is simple and practical and can emit different colors of light. A lighting device includes a light source module and a light transmissive optical component. The light source module includes at least one light emitting diode, the light source module is formed with a form number A0101, page 3, total 21 pages, 1003463191-0 [0005] 1362465 [0006] [0007] [0008] 098107344 December 15, 100 The shuttle is replacing the mu in a single color. The optical component has a plurality of light transmissive regions, and at least one of the plurality of light transmissive regions includes at least one phosphor powder, and the at least one phosphor powder emits other color lights different from the single color light under excitation of the single color light. The learning element rotates around the light source module to selectively illuminate a single color light emitted by the light source module to at least one of the plurality of light transmissive regions, the optical element further having a first hollow cylindrical wheel gallery. The plurality of transparent regions are a plurality of curved regions arranged along a circumferential direction of the first hollow cylindrical profile, and the illumination device further comprises a transparent carrier disposed inside the optical component to carry the light source module.

Compared with the prior art, the optical component of the illumination device includes at least one phosphor powder, and the optical component is rotatable around the light source module, so that the single color light emitted by the light source module is transparently transmitted by the optical component. The area is emitted; the phosphor in the plurality of transparent regions absorbs the single color light and converts the single color light, so that the optical element emits a plurality of different color lights when rotating, thereby achieving the purpose of enriching the illumination effect. The illumination device has a simple structure and is convenient for application and promotion. [Embodiment] Hereinafter, embodiments of the present invention will be further described in detail in conjunction with the drawings. Referring to FIG. 1 , a lighting device according to a first embodiment of the present invention includes a light source module 11 , a light transmissive optical component 12 , and a driving optical component 12 for rotating around the light source module 11 . The light source module 11 includes a circuit board 111, a solid state light emitting component disposed on the circuit board 111, and a heat sink 113. Among them, the luminous form number A0101 page 4 / total 21 pages 1003463191-0 [0009] 1362465, -»

Correction replacement page on December 15, 100. The diode 112 and the heat sink 113 are respectively disposed on opposite sides of the circuit board 111. Specifically, the solid state light emitting element 11 2 may be a light emitting diode that emits a single color light. In this embodiment, the light emitting diode 112 is a blue light emitting diode that emits blue light having a wavelength of any wavelength from 410 nm to 490 nm. Preferably, the blue light is 465 nm, and the spectrum of the blue light is The full width at half maximum (FWHM) does not exceed 30 nm. The circuit board 111 can supply power to the LEDs 112 by an external power source. The heat dissipating device 113 can be specifically a heat dissipating fin and can be adhered to the circuit board 112 by a thermal conductive adhesive, such as silver glue, so that the circuit board in is thermally connected with the light emitting diode π to make the light emitting. The heat emitted by the diode 112 during light emission can be conducted to the heat dissipation fins 113 by the circuit board 112 for heat dissipation, whereby the light emitting diode 112 can be operated at a stable operating temperature to ensure its protection. Luminous properties. The illumination device 1 further includes a transparent carrier 14 for carrying the light source module 11. The transparent carrier 14 has a hollow body portion 144, and two latching portions 142 extending from the sides of the hollow body portion 140 into the cavity 14A of the hollow body portion 14A. Specifically, The hollow body portion 140 has a first hollow cylindrical profile, and the two fastening portions 142 respectively define a groove 142 适配 adapted to the two sides of the circuit board 111. Both sides of the circuit board 111 can be latched in the two latching portions 142. Referring to Figure 2 together, the optical element 12 has a second hollow cylindrical profile, and the second hollow cylindrical profile is composed of a plurality of arcuate transparent areas I, II, III of equal size and shape. The plurality of curved transparent regions 丨, u, and III are arranged along the circumferential direction of the cylindrical contour, and the arc angle 0 corresponding to each of the curved transparent regions I, π, and III and the 098107344 of the light emitting diode 112 Form No. A0101 1003463191-0 1362465 After the ninth to the 15th of the 100th, the illuminating angles are equal. In this embodiment, the light-emitting diode 112 has an illumination angle of 120 degrees, and correspondingly, the arc angle 0 is also 120 degrees. [0012] The optical element 12 may be made of a material such as a resin (Resin), a Silicone, a polymer, or a glass. The resin material is epoxy resin (Epoxy) or polycarbonate resin (Polyethylene terephthalate), and the polymer is polycarbonate (Poly Carbonate, PC) or polymethylmethacrylate (PMMA). . [0013] The arc-shaped transparent regions I, II, and III are respectively doped with a substance 丨21 of a switchable wavelength. As shown in FIG. 2, in the present embodiment, the material 121 of the switchable wavelength is a fluorescent powder, and the curved transparent regions I, π, and are respectively doped with red, yellow, and green fluorescent powders 121 ^ The material of the phosphor powder 121 is Sulfides, Aluminates, Oxides, Siliconates or Nitredes. Specifically, the material of the phosphor powder 121 may be Ca2A1i2°i9:Mn, (Ca, Sr> Ba)Al2〇4:Eu, Y3A15012Ce3+(YAG), Tb3Al5〇12: Ce3+(YAG),

BaMgAl1〇〇17: Eu2+(Mn2+), Ca2Si5N8:Eu2+, (Ca,

Sr, Ba)S: Eu2+, (Mg, Ca, Sr, Ba) SiO : 2 4

Eu2'(Mg, Ca, Sr, Ba)3Si2〇7: Eu2 +,

Ca8Mg(Si〇4)4Cl2:Eu2+, Y2〇2S:Eu3+, (Sr, Ca,

Ba)Si 0 N :Eu2+, (Ca, Mg, Y)SiwAl 0 N :Eu2+ y Λ x y z 9

CdS, CdTe or CdSe, etc. [0014] 098107344 The two ends of the hollow cylindrical profile are respectively an open end 12 〇 and a closed end 122 ′, wherein the closed end 122 and an excitation unit 15 such as a motor or steam 1003463191-0 Form No. A0101 Page 6 / Total 21 pages 1362465 100 years. On December 15th, the replacement page is replaced by a mechanical lighter' and the open end 120 is provided with a cavity ha. Further, the illumination device 100 further includes two bearings 16, such as ball bearings, to connect the optical component 12 to the transparent carrier 14. [0015] Referring to FIG. 3, in assembly, the light source mold is first placed into the cavity 14A of the transparent carrier 14 from the open end 120, wherein the two ends of the circuit board U1 are inserted in the same manner. The transparent carrier 14 is integrated with the light source module 11 and carries the light source module ,j. Preferably, the light emitting diode 112 is located on the axis of the optical component 12. [(8)16] Further, two bearings 16 are sleeved on the two ends 120, 122 of the diarrhea, and the transparent carrier 14 and the two bearing cymbals are integrally sleeved into the optical component 12 The two bearings 16 are engaged with the open end 120 and the closed end 122 of the optical element 12. Thus, the two sleeves 16 connect the transparent carrier 14 to the optical component 12, and the transparent carrier 14 is coaxial with the optical member 12. When the transparent carrier 14 is fixed and the excitation unit 15 is energized, the excitation unit 15 can drive the optical component 12 U transparent carrier 14 and the light source module “rotates” and its rotation axis is the central axis of the optical component 12 . The light emitted by the LED 112 can be further transmitted to the optical component 12 through the transparent carrier 14. Referring to and referring to Figures 4-6, the illumination device provided by the present invention works as follows: [0018] The chromaticity diagram shown in Figure 5 ((5) 嶋... Caution (4), m 'fluorescent powder 121 (such as red, yellow 'green fluorescent powder) all absorbs the wavelength of A early color light, it is excited and Other color lights of wavelength β are emitted. If the wavelength is A, part of the light is absorbed by the filament 121, 098107344 Form bat number A0101 Page 7 / 21 pages 1003463191-0 1362465 The wavelength value of the light corresponds to the I-point (excluding the defect and the defect) on the ab connection. In the embodiment, the LED 112 emits blue light A having a wavelength of 465 nm, which is driven by the excitation unit 15. The optical element 12 is rotated in the direction indicated by the arrow S in FIG. 4, so that the blue light A When the light-transmitting region II is used, the light-transmitting region Π is doped with yellow phosphor powder. When the yellow phosphor powder 121 completely absorbs the blue light A, it converts and emits a yellow light B having a wavelength of 575 nm. When the yellow phosphor powder When only partially absorbing the blue light A, the multi-wavelength of the light emitted after the conversion corresponds to a point on the AB line. It can be understood that when the yellow phosphor powder 121 has a different absorption ratio to the blue light A, the optical element 12 is used. The wavelength of the emitted light is also different. In addition, when the yellow fluorescent powder 121 absorbs only part of the blue light A and converts and emits another color light different from the blue light A, the other color light may be completely unabsorbed - the blue light A Mixing light to form another color light. [0019] Of course, the curved transparent regions I, II, III can also be doped with a plurality of phosphor powders 121. As shown in FIG. 6, when the curved transparent region II is doped green And yellow phosphor powder 121, and the blue light A (wavelength of 465 nm) is completely absorbed by the yellow and green phosphor powders 121, respectively, and the light emitted after the conversion is φ yellow light B and green light respectively. C (wavelengths are 575 nm and 540 nm, respectively). If the blue light A is only partially yellow, green When the light powder 121 is absorbed, the wavelength of the light converted by the yellow and green phosphor powder 121 corresponds to one of the points enclosed by the three points A, B, and C (excluding the points A, B, and C) [0020] Further, the ability of the curved transparent regions I, Π, III to absorb and convert the single color light A depends on the distribution density of the transparent particles I, II, and the fluorescent powder 121 in the sputum. When the distribution density of the light powder 121 is large, the ability to absorb and convert is strong. In the present embodiment, 'for the illumination device 100, 098107344 Form No. A0101 Page 8/Total 21 Page 1003463191-0 1362465 100 December 15 The day correction produces a richer and gradual color light. Preferably, the phosphor powder 121 doped by each of the curved light-transmissive regions j, II, III is distributed differently along the circumferential direction of the optical element 12. For example, the density of the yellow phosphor powder 121 doped in the arc-shaped light-transmissive region 逐渐 gradually increases in the opposite direction of the arrow S in FIG. 4, and when the optical element 12 rotates in the direction indicated by the arrow S in FIG. When the blue light octaves the region where the concentration of the doped yellow phosphor powder 121 of the light-transmitting region II is small and the region where the concentration of the doped phosphor powder 121 is large, the proportion of the light that is emitted by the optical element a Will gradually become bigger. Thereby, the light emitted by the illumination device 1 exhibits a richer and varied ® color as the optical element 12 rotates. [0021] The optical element 12 may also include only one type of phosphor powder 121, and the phosphor powder 121 has a different distribution density along the circumferential direction of the optical element 12. The light-emitting diode 111 emits a single color light from the green region to the violet region to excite the phosphor powder 121. In addition, it can be understood that in order to enable the illumination device to emit a single blue light during the rotation of the optical element 12, the optical element 12 may further include a transparent region that is completely undoped with the phosphor powder 121, or may be stepped into a step. The transparent region is hollowed out, whereby the single element blue light can be completely transmitted out during the rotation of the optical element 12. [0022] In another embodiment, the red, yellow, and green phosphors 121 may not be doped in the optical component 12, but are applied to the optical component 12 corresponding to the curved transparent region I, The surface of II, III (such as the inner or outer surface) to form a thin film layer. In the driving mode, in the embodiment, the excitation unit 15 drives the optical component 12 to rotate, and the light source module and the transparent support frame 14 are fixed, so that the optical component 12 can rotate around the light source module 11. It can be understood that the excitation unit 098107344 form number A0101 page 9 / 21 pages 1003463191-0 1362465 _ 100 years. December 15th shuttle replacement 苜 15 can also mechanically connect the transparent support frame 14 to drive the transparent support The frame 14 drives the light source module 11 to rotate about its axis, and the optical components 12 are fixed differently, so that the illumination device 100 can emit different colors of light. Of course, the rotation of the optical element 12 can also be achieved manually. [0024] The phosphor powder 121 may also be disposed on the optical element 12 by other forms. Referring to FIG. 7 together, a plurality of dense grooves 124 are disposed on the surface of the optical element 12, and the phosphor powder (not shown in FIG. 7) is mixed with the liquid colloid and filled in the plurality of grooves 124, and further heated. The colloid is cured by irradiation with UV light. Since the phosphor powder is mixed in the liquid gel body, the fluorescent powder can be prevented from directly contacting the air to cause aging, and the light conversion property of the phosphor powder can be effectively ensured. [0025] Of course, the material of the switchable wavelength may also be doped into the optical element 12 by injection molding, and is not limited to the specific embodiment. The illumination device 100 according to the first and second embodiments of the present invention has the advantages of simple structure, and is advantageous for application and promotion. It will be understood that those skilled in the art may also make other changes within the spirit of the present invention. For example, the transparent support frame 14 in the first embodiment is omitted and the light source module is held by other support mechanisms as long as it does not deviate from the technology of the present invention. The effect can be. All changes made in accordance with the spirit of the invention are intended to be included within the scope of the invention. [0027] In summary, the present invention has indeed met the requirements of the invention patent, and the patent application is filed 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. Familiar with this 098107344 Form No. A0101 Page 10 / Total 21 Page 1003463191-0 1362465 . j On December 15, 100, the person who is correcting the page is assisted by the equivalent modification or change of the spirit of the present invention. It should be covered by the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic exploded view of a lighting device according to a first embodiment of the present invention. 2 is a schematic cross-sectional view of the optical component of the illumination device of FIG. 1 taken along line 11-11. 3 is a schematic structural view of the lighting device shown in FIG. 1. [0031] FIG. 4 is a cross-sectional view of the lighting device of FIG. 3 taken along line IV-IV. [0032] FIG. 5 is a chromaticity diagram of the optical component of FIG. 1 including a phosphor. [0033] FIG. 6 is a chromaticity diagram of the optical element of FIG. 1 including two types of phosphors. 7 is a schematic structural view of a lighting device according to a second embodiment of the present invention. [Description of main component symbols] Illumination device: 100 φ [0036] Light source module: 11 [0037] Optical component: 12 [0038] Transparent support frame: 14 [0039] Excitation unit: 1 5 [0040] Bearing: 1 6 [0041] Circuit Board: 111 [0042] Light Emitting Diode: 112 098107344 Form No. A0101 Page 11 / Total 21 Page 1003463191-0 1362465 100. December 15th Nuclear Replacement [0043] Heat Dissipating Device: 113 [0044] Hollow body: 1 4 0 .

[0045] Cavity: 14A

[0046] Snap portion: 142 [0047] Groove: 1420 [0048] Open end: 120 ' [0049] Fluorescent powder: 121

Closed end: 122 [0051] Groove: 124 [0052] Curved transparent area: I, 11, 111 098107344 Form number A0101 Page 12 of 21 1003463191-0

Claims (1)

December 15th, 100th, 2014, the patent application scope: 1. A lighting device, comprising: a light source module for emitting a single color light, the light source module comprising at least one light emitting diode; a light transmissive optical element having a plurality of light transmissive regions, at least one of the plurality of light transmissive regions comprising at least one phosphor powder, the at least one phosphor powder emitting a different color than the single color light excitation The other color light of the single color light, the optical component is rotated around the light source module to selectively illuminate the single color light emitted by the light source module to at least one of the plurality of transparent regions, the optical component further having a first The hollow cylindrical wheel porch, the plurality of transparent regions are a plurality of curved regions arranged along a circumferential direction of the first hollow cylindrical contour, and the illuminating device further comprises a transparent carrier disposed inside the optical component to carry the light source module . 2. The illumination device of claim 1, wherein the single color light emitted by the at least one light emitting diode is blue light. 3. The illumination device of claim 1, wherein the at least one phosphor comprises a plurality of, and the adjacent two arcuate regions of the optical component comprise different glaze powders. 4. The illumination device of claim 1, wherein the at least one phosphor has a different distribution density along the circumferential direction. 5. The lighting device of claim 4, wherein the at least one light emitting diode is disposed on an axis of the first hollow cylindrical wheel gallery, and the arc angle corresponding to each of the isolated regions is The illumination angles of the at least one light emitting diode are equal. 6. The lighting device of claim 1, wherein the light source mold form number A0101 is 13 pages/total 21 pages 1003463191-0 1362465 100 years. December 15th, the nuclear replacement group further includes a circuit The at least one solid state light emitting component is disposed on the circuit board and electrically connected to the circuit board. 7. The illumination device of claim 6, wherein the transparent carrier comprises a second hollow cylindrical profile and extends from both sides of the second hollow cylindrical profile into the cavity of the second hollow cylindrical profile The two latching portions are formed, and the two sides of the circuit board are respectively buckled on the two latching portions. 8. The illuminating device of claim 7, further comprising at least one bearing disposed between the transparent carrier and the optical element to connect the transparent carrier to the optical component The transparent carrier is made coaxial with the optical element. 9. The illumination device of claim 1, wherein the at least one phosphor is applied to a surface of the optical element corresponding to the plurality of light transmissive regions. 10. The illumination device of claim 1, wherein the at least one phosphor is doped in the optical component. 11. The illuminating device of claim 1, wherein the optical element has a plurality of grooves corresponding to the surface of the plurality of light-transmissive regions, and the at least one phosphor powder is doped in the plurality of grooves. 12. The illumination device of claim 1, further comprising an excitation unit coupled to one end of the optical element to drive the optical element to rotate. 13. The lighting device of claim 12, wherein the excitation unit is a motor or a rotating cylinder. 098107344 Form No. A0101 Page 14 of 21 1003463191-0