TWI487868B - An omnidirectional light emitting device and operating method thereof - Google Patents

Description

Multi-directional illuminating device and operating method thereof

A light-emitting device, in particular, a multi-directional light-emitting device capable of expanding light in multiple directions by a specially designed cover.

Incandescent bulbs are commonly used devices for lighting. The incandescent bulb has a filament in its structure, and the filament is burned after being energized to emit nearly 360 degrees of omnidirectional light. However, incandescent bulbs are extremely susceptible to external factors that cause their luminescence to fail. For example, changes in temperature or changes in voltage can cause damage to incandescent bulbs. What's more, slight vibrations or shocks can also cause damage to incandescent bulbs. In addition, the use of incandescent bulbs requires a constant and constant supply of power, which is due to the higher energy required to burn the filament.

The light-emitting diode is a green light source that has received much attention recently. Compared with incandescent bulbs, LEDs have a longer lifetime and require less external power. Therefore, in terms of energy issues, the low energy consumption of LEDs has become one of the focuses of future lighting devices. However, the disadvantage of a light-emitting diode compared to an incandescent light bulb is that the light-emitting diode does not emit light at all angles. Typically, a light emitting diode structure forms a semiconductor p-n junction layer on a substrate. After the p-n-type junction layer is energized, the p-layer hole and the n-layer electron are combined by electrical excitation to generate photons, which is the basic principle of the light-emitting diode. Most of the illumination of this form is vertical forward light, and its lateral light is much weaker with respect to the forward light, so that its illumination angle is limited and it cannot form a light source for full-angle illumination.

Traditionally, in order to solve the above-mentioned light-emitting diode light source, the light-directing property is not wide enough. The problem is that more than the peripheral side or the upper side of the illuminating source is designed with a multi-reflecting portion, and the incident light path is changed by the reflection characteristic of the light to expand the illuminating source pointing performance. Or use a large number of different sources of light source with the reflector to emit light in different directions. However, no matter which method is used, it is necessary to use a large number of reflecting portions or illuminating sources to achieve the purpose of multi-directional illuminating. Therefore, there are still problems to be overcome in terms of production and utilization of light.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a directional light-emitting device and method for operating a light source that emits light from a directional light source in a multi-directional manner to form an almost full-angle light.

In order to achieve the object of the present invention, one embodiment of an aspect of the present invention provides a multi-directional light-emitting device. The multi-directional light emitting device comprises a cover, a base and at least one directional light source. The cover body includes at least one reflective portion and at least one transmissive portion formed on the cover. A pedestal is disposed on one side of the reflecting portion and spaced apart from the reflecting portion by a distance. At least one directional light source is disposed on the susceptor, and the directional light source emits light toward the hood.

In one embodiment of the invention, at least one support rod can be disposed between the base and the cover. In addition, the cover further includes at least one transparent medium portion interlaced with the reflecting portion, and the light emitted by the directional light source passes through the transparent medium portion to form a refract.

In one embodiment of the invention, the reflecting portion includes a first reflecting surface and a second reflecting surface. The first reflecting surface and the second reflecting surface are disposed on opposite sides of the reflecting portion. Furthermore, the cover may comprise at least one spherical surface, at least one plane, at least one slope, at least one curved surface or may comprise at least one ridge structure. In addition, the material of the reflecting portion may be a metal having light reflection characteristics or a non-metal having a light reflecting coating, wherein the light reflecting coating material may be silver or tin.

In one embodiment of the present invention, the transmissive portion may be arranged in a radial arrangement, a checkerboard arrangement, or a concentric arrangement. In addition, the directional light source may be an inorganic light emitting diode, an organic light emitting diode, or a laser diode. In addition, a plurality of directional light sources can be disposed on the pedestal in a COB (Chip On Board) manner.

One embodiment of another aspect of the present invention is to provide a method of operating a multi-directional light emitting device. After the directional light source on the pedestal emits light, a portion of the light passes to the hood. The emitted light to the cover includes: a portion of the light passes through the transmissive portion of the cover and directly into the air; a portion of the light contacts the reflective portion to form a reflection. Another portion of the light emitted by the directional light source on the pedestal does not pass to the cover and is free to diverge into the air. All of the above light causes the original directional light source to form a multi-directional light-emitting device.

In the omnidirectional light-emitting device of the present invention, the light emitted by a directional light source is partially injected into the air through the transmissive portion and the other portion is reflected by the reflecting portion. Thus, the light of the directional light source can be expanded to form a full-angle light. Further, by providing a transparent dielectric portion which is alternately arranged with the reflecting portion on the cover, the light incident on the transparent medium portion can be refracted to further expand the light-emitting angle.

In order to further clarify the embodiment of the present invention, the special solution is illustrated in detail. Say. In the embodiment of the invention, the cover body is basically designed as a structure in which the reflecting portion is combined with the transmitting portion, so that the cover body has both transmission and reflection effects. Alternatively, a plurality of transparent dielectric portions arranged in a staggered manner with the reflecting portion may be disposed on the cover body, and light rays are refracted by the transparent medium portion, and the light exiting angle is more expandable.

Please refer to Figure 1. 1 is a perspective view showing an embodiment of a multi-directional light-emitting device 100 of the present invention. A multi-directional light emitting device 100 includes a cover 110 and a base 101. The cover 110 includes a plurality of reflection portions (not numbered), and each of the reflection portions (not numbered) includes at least one first reflection surface 111 and at least one second reflection surface 112. The first reflecting surface 111 and the second reflecting surface 112 are respectively located on opposite sides of the reflecting portion (not numbered). The first reflecting surface 111 directly reflects the light emitted by the directional light source 102, and the second reflecting surface 112 reflects the ambient stray light or the directional light source 102 passes through the transmitting portion 113 and rebounds to the second reflecting surface 112. Other light, which increases light utilization. In addition, the cover body 110 includes a plurality of transmissive portions 113 for transmitting light. The transmissive portion 113 in the present invention may be formed by a gap (not numbered) formed on the cover 110 as in the present embodiment, or may be formed by a light-transmitting material as in the subsequent embodiment. In the present embodiment, the cover system is formed in a three-dimensional trumpet shape. A plurality of directional light sources 102 are arranged on the susceptor 101 to form an array. The base 101 and the cover 110 are spaced apart by a distance D1. In order to reflect the light, the materials of the first reflective surface 111 and the second reflective surface 112 may directly use a metal having light reflection characteristics or a non-metal coated with a light reflective coating. The light reflective coating material can be selected from silver, tin or other materials with light reflection properties. Other embodiments of the present invention are also the same and will not be described again.

Please continue to refer to Figures 2A and 2B. 2A and 2B are perspective views of another embodiment according to Fig. 1. The base of Figure 1 A support rod 130 may be disposed between the 101 and the cover 110 as shown in FIG. 2A, or more than one support rod may be disposed, such as the support rod 131, the support rod 132 and the support rod 133 in FIG. 2B. The support rods in the present invention may or may not be provided, and the end needs to be seen by the designer. Further, in the present invention, if two or more support rods are used, the degree of freedom of arrangement can be increased, and the directional light source 102 can be operated more flexibly. As shown in FIG. 2B, after the three support bars are used, the directional light source 102 can be disposed below the center of the cover to further enhance the light-emitting brightness. This part is not specifically described in the subsequent implementation. Implementers should be able to associate directly with them.

Please continue to refer to Figures 3A and 3B. Figure 3A is a side elevational view of one embodiment of the present invention. The cover 310 includes a plurality of reflecting portions 311 and a plurality of transmitting portions 312. Further, a plurality of transparent dielectric portions 313 may be interleaved on the cover 310 and the reflection portion 311. In the present embodiment, the cover 310 is formed in a circular flat shape. A plurality of directional light sources 315 are disposed on the pedestal 314. The light emitted by the light source 315 is a1, a2, a3, and a4. A1 passes through the transmitting portion 312 and is directly incident into the air. A2 forms a reflection after contacting the reflection portion 311. A3 forms a refraction through the transparent medium portion 313. A4 is not directly emitted into the air through the cover 310. FIG. 3B is a side view of another embodiment according to FIG. 3A, except that the directional light source 315 is disposed on the pedestal 314 by a COB (Chip On Board) method. Such a COB configuration can also be applied to any of the embodiments of the present invention and will not be specifically described.

Please continue to refer to Figure 4A. Figure 4A is a side elevational view of one embodiment of the present invention. The cover 410 includes a plurality of reflecting portions 411 and a plurality of transmitting portions 412, and a plurality of transparent dielectric portions 413 and a plurality of reflecting portions 411 are alternately arranged. In the present embodiment, the cover 410 is formed in a conical shape. In addition, In the present embodiment, the arrangement order of the reflection portion 411, the transmission portion 412, and the transparent medium portion 413 and the angle with respect to the directional light source can be adjusted according to the actual situation, so that the cover body can be adjusted to have different reflection, transmission, or refraction directions. Further, the directional light source can form directional light by the cover. A plurality of directional light sources 415 are disposed on the pedestal 414. The light emitted by the directional light source 415 is a1, a2, a3, and a4. A1 passes through the transmitting portion 412 and is directly incident into the air. The a2 contacts the first reflecting portion 411 and the second reflecting portion 412 to form a reflection. A3 passes through the transparent medium portion 413 to form a refraction. A4 is not directly emitted into the air through the cover 410.

Please continue to refer to Figure 4B. Fig. 4B is a perspective view showing an embodiment of the cover body in Fig. 4A. The cover 410 includes a reflection portion 411, a transmission portion 412, and a transparent medium portion 413. In the present embodiment, the transmissive portion 412 is integrally formed with a ring-shaped tapered shape and includes a light-transmitting material for light transmission.

Please continue to refer to Figure 4C. Fig. 4C is a perspective view showing another embodiment of the cover body in Fig. 4A. The cover 410 includes a reflection portion 411, a plurality of transmission portions 412, and a transparent medium portion 413. In the present embodiment, the transmissive portion 412 includes a plurality of gaps formed on the cover 410 for light transmission.

Please continue to refer to Figure 4D. Figure 4D is a side elevational view of another embodiment in accordance with Figure 4A. The reflecting portion 411, the plurality of transmitting portions 412, and the plurality of transparent dielectric portions 413 may form a plurality of reflecting or refracting surfaces using the ridge structure 416 to increase the spread of light.

Please continue to refer to Figure 5. Figure 5 is a side elevational view of one embodiment of the present invention. The cover 510 includes a plurality of reflecting portions 511 and a plurality of transmitting portions 512, and a plurality of transparent dielectric portions 513 and a plurality of reflecting portions 511 are alternately arranged. Transmissive portion transparent medium portion, wherein the reflecting portion 511, a plurality of transparent The projection portion 512 and the plurality of transparent dielectric portions 513 form a curved surface for the purpose of increasing the expansion angle of the light. In the embodiment of the present invention, the arc surface is an upper structure, and includes all surfaces having a curvature (for example, a spherical surface). A plurality of directional light sources 515 are disposed on the pedestal 514. The light emitted by the directional light source 515 is a1, a2, a3, and a4. A1 passes through the transmitting portion 512 and is directly incident into the air. A2 forms a reflection after contacting the reflection portion 511. A3 is refracted by the transparent medium portion 513. A4 is not directly emitted into the air through the cover 510. In addition, in the center of the bottom of the cover 510 of the present invention, it may be a closed type as in the present embodiment, or in other embodiments, an opening may be formed in the center of the cover to transmit light.

Please continue to refer to Figure 6. Figure 6 is a side elevational view of an embodiment of the present invention. The cover 610 includes a plurality of reflecting portions 611 and a plurality of transmitting portions 612, and a plurality of transparent dielectric portions 613 and a plurality of reflecting portions 611 are alternately arranged. The plurality of reflecting portions 611, the plurality of transmitting portions 612, and the plurality of transparent dielectric portions 613 may be arranged in a plane or a curved surface, and the plane and the arc surface may be arbitrarily combined to form a complicated combination to increase the expansion angle of the light. A plurality of directional light sources 615 are disposed on the transparent portion 614 of the transmissive portion. The light emitted by the directional light source 615 is a1, a2, a3, and a4. A1 passes through the transmitting portion 612 and is directly incident into the air. A2 forms a reflection after contacting the reflection portion 611. A3 passes through the transparent medium portion 613 to form a refraction. A4 is not directly emitted into the air through the cover 610.

Please continue to refer to Figure 7. Figure 7 is a side elevational view of one embodiment of the present invention. The cover 710 includes a plurality of reflecting portions 711 and a plurality of transmitting portions 712, and a plurality of transparent dielectric portions 713 and a plurality of reflecting portions 711 are alternately arranged. Wherein, the plurality of reflecting portions 711 and the plurality of transmitting portions 712 And the plurality of transparent medium portions 713 can be arranged in a curved surface, and then the curved surface is used as a base unit to be arranged in a combination of a plurality of curved surfaces to increase the light expansion angle. A plurality of directional light sources 715 are disposed on the transparent portion 714 of the transmissive portion. The light emitted by the directional light source 715 is a1, a2, a3, and a4. A1 passes through the transmitting portion 712 and is directly incident into the air. A2 forms a reflection after contacting the reflection portion 711. A3 passes through the transparent medium portion 713 to form a refraction. A4 is not directly emitted into the air through the cover 710.

Please continue to refer to Figure 8. Figure 8 is a top plan view showing one embodiment of the cover of the present invention. The cover 810 has a plurality of reflecting portions 811 and a plurality of transmitting portions 812. A plurality of transmissive portions 812 form a radial arrangement. Further, a plurality of transparent dielectric portions 813 are provided on the reflection portion 811.

Please continue to refer to Figure 9. Figure 9 is a top plan view showing one embodiment of the cover of the present invention. The cover 910 has a plurality of reflecting portions 911 and a plurality of transmitting portions 912. The plurality of transmissive portions 912 are formed in a concentric circular arrangement. Further, a plurality of transparent dielectric portions 913 are provided on the reflecting portion 911.

Please continue to refer to Figure 10. Figure 10 is a top plan view showing one embodiment of the cover of the present invention. The cover 1010 has a plurality of reflecting portions 1011 and a plurality of transmitting portions 1012. The plurality of transmissive portions 1012 are formed in a checkerboard arrangement. Further, a plurality of transparent dielectric portions 1013 are provided on the reflection portion 1011.

In the omnidirectional light-emitting device of the present invention, the cover is designed such that the reflection of the reflecting portion matches the transmission of the transmitting portion, so that the path of the emitted light of the directional light source can cover the upper half plane and the lower half plane to form a omnidirectional directionality. light source. In addition, the transparent medium portion can be designed to make the incident light of the directional light source refract through the transparent medium portion to expand the light angle. And the cover of the invention can be designed as a plane, a slope, a curved surface, and sequentially arranged. The ridge structure or any combination of the above structures allows the light to expand more. In addition, the light source may be an inorganic light emitting diode, an organic light emitting diode, a laser diode, or other light emitting source. Therefore, the original directional light source light can be expanded by the transmission, reflection and refraction of the cover to form a multi-directional light-emitting device.

100‧‧‧Multidirectional illuminating device

101‧‧‧Base

102‧‧‧Directive source of illuminance

110‧‧‧ Cover

111‧‧‧First reflecting surface

112‧‧‧Second reflective surface

113‧‧‧Transmission Department

130‧‧‧Support rod

131‧‧‧Support rod

132‧‧‧Support rod

133‧‧‧Support rod

310‧‧‧ Cover

311‧‧‧Reflection Department

312‧‧‧Transmission Department

313‧‧‧Transparent Media Division

410‧‧‧ Cover

411‧‧‧Reflection Department

412‧‧‧Transmission Department

413‧‧‧Transparent Media Division

414‧‧‧Base

415‧‧‧Directive source of illuminance

416‧‧‧ ridge structure

510‧‧‧ Cover

511‧‧‧Reflection Department

512‧‧‧Transmission Department

513‧‧‧Transparent Media Division

514‧‧‧Base

515‧‧‧Directive source of illuminance

610‧‧‧ Cover

611‧‧‧Reflection Department

612‧‧‧Transmission Department

613‧‧‧Transparent Media Division

614‧‧‧Base

615‧‧‧Directive source of illuminance

710‧‧‧ Cover

711‧‧‧Reflection Department

712‧‧‧Transmission Department

713‧‧‧Transparent Media Division

714‧‧‧Base

715‧‧‧Directive source of illuminance

810‧‧‧ Cover

811‧‧‧Reflection Department

812‧‧‧Transmission Department

813‧‧‧Transparent Media Division

910‧‧‧ Cover

911‧‧‧Reflection Department

912‧‧‧Transmission Department

913‧‧‧Transparent Media Division

1010‧‧‧ Cover

1011‧‧‧Reflection Department

1012‧‧‧Transmission Department

1013‧‧‧Transparent Media Division

D1‧‧‧ distance

A1, a2, a3, a4‧‧‧ rays

Fig. 1 is a perspective view showing an embodiment of a multidirectional light-emitting device of the present invention.

2A and 2B are perspective views of another embodiment according to Fig. 1.

Figure 3A is a side elevational view of one embodiment of the present invention.

Figure 3B is a side elevational view of another embodiment in accordance with Figure 3A.

Figure 4A is a side elevational view of one embodiment of the present invention.

Fig. 4B is a perspective view showing an embodiment of the cover body in Fig. 4A.

Fig. 4C is a perspective view showing another embodiment of the cover body in Fig. 4A.

Figure 4D is a side elevational view of another embodiment in accordance with Figure 4B.

Figure 5 is a side elevational view of one embodiment of the present invention.

Figure 6 is a side elevational view of an embodiment of the present invention.

Figure 7 is a side elevational view of one embodiment of the present invention.

Figure 8 is a top plan view showing one embodiment of the cover of the present invention.

Figure 9 is a top plan view showing one embodiment of the cover of the present invention.

Figure 10 is a top plan view showing one embodiment of the cover of the present invention.

100‧‧‧Multidirectional illuminating device

101‧‧‧Base

102‧‧‧Directive source of illuminance

110‧‧‧ Cover

111‧‧‧First reflecting surface

112‧‧‧Second reflective surface

113‧‧‧Transmission Department

D1‧‧‧ distance

Claims (15)

A multi-directional light-emitting device comprising: a cover body, wherein the cover body comprises at least one reflection portion and at least one transmissive portion formed on the cover body; a base corresponding to one side of the cover body And spaced apart from the cover; and at least one directional light source disposed on the base, wherein the directional light source emits light toward the cover. The omnidirectional light-emitting device of claim 1, wherein the cover further comprises at least one transparent medium portion interlaced with the reflective portion, such that light emitted by the directional light source passes through the transparent medium portion to form a refract. The omnidirectional light-emitting device of claim 1, wherein the reflecting portion further comprises: a first reflecting surface disposed on one side of the reflecting portion; and a second reflecting surface disposed on the reflecting portion The first reflecting surface is opposite to the other side. The multi-directional light-emitting device of claim 1, wherein at least one support rod is disposed between the base and the cover. The omnidirectional light-emitting device of claim 1, wherein each of the The transmissive portion is composed of a gap formed on the cover. The omnidirectional light-emitting device of claim 1, wherein each of the transmissive portions comprises a light transmissive material. The omnidirectional light-emitting device of claim 1, wherein the cover comprises at least one spherical surface. The omnidirectional light-emitting device of claim 1, wherein the cover comprises at least one plane. The omnidirectional light-emitting device of claim 1, wherein the cover comprises at least one slope. The omnidirectional light-emitting device of claim 1, wherein the cover comprises at least one curved surface. The omnidirectional light-emitting device of claim 1, wherein the cover comprises at least one ridge structure. The omnidirectional light-emitting device of claim 1, wherein the transmissive portions are radially arranged. The omnidirectional light-emitting device of claim 1, wherein the The transmissive portions are arranged in a checkerboard shape. The omnidirectional light-emitting device of claim 1, wherein the transmissive portions are arranged in a concentric manner. A method for operating a omnidirectional light-emitting device according to claim 1, comprising: after the illuminating light source on the susceptor emits light, a part of the light reaches the hood, wherein the emission to the hood The light includes: a portion of the light passes through the transmissive portion of the cover and directly into the air; and a portion of the light contacts the reflective portion to form a reflection; and another portion of the light emitted by the directional light source on the pedestal is blocked Freely emitted into the air to the cover.