TWI381132B - Reflector, lighting unit and lighting panel using the same - Google Patents

Description

Reflector, lamp unit and light board

The present invention relates to a light-emitting device, and more particularly to a light panel with a light-emitting diode as a light source and a lamp unit thereof.

A light-emitting diode is a semiconductor component that converts electrical energy into light. Because of its high conversion efficiency, it saves energy compared to other illumination methods. In addition, it has the advantages of long life, low heat radiation, fast response and environmental protection (no mercury pollution), so it is regarded as the next generation of lighting technology. Also because of the potential future of light-emitting diodes, the application and technology development related to light-emitting diodes has been continuously carried out.

Lighting is one of the main applications of light-emitting diodes, and there are many related development technologies. Among them, the Republic of China Patent No. M322503 discloses a structure for forming a light-emitting diode reflector tube lamp by using a light-emitting diode, which uses a light-transmitting straight tube to which a reflective film material is attached, and the lamp A light-emitting diode light source is respectively disposed at both ends of the tube, and the light source is brightly reflected by the astigmatism reflection of the reflective film material. Although the technology disclosed in this patent makes the light-transmitting straight tube as a whole to achieve the purpose of large-area illumination, since the light source is located at both ends of the tube, when applied to a long-sized tube, both ends and the center may be generated. The light energy distribution between the two is uneven.

The Republic of China Patent No. M276148 discloses an illumination lamp set using a light-emitting diode array as a light source. This patent is a light source emitted by a direct light-emitting diode as an illumination source. Compared with the above patented technology, although a large lamp efficiency can be obtained, if no good heat dissipation technology is matched, It is difficult to arrange the higher-power LEDs in a dense arrangement to make the lamps emit light uniformly. Moreover, since the LEDs are a highly directional light source, uneven illumination may cause glare to occur in the user.

Japanese Patent Publication No. 2002-251903 discloses a light-emitting diode reflective box having a reflecting portion which is covered by five reflecting surfaces, and light of a plurality of light-emitting diodes is projected into the reflective box. After the reflecting portion, the light is reflected out of the reflective box according to the different design angles of the reflecting surface. The reflective box design disclosed in the present invention is complicated in complexity, which increases the manufacturing cost, and if a plurality of reflective boxes are connected to form a larger box, light rays may be generated at the joint.

In summary, in order to use the light-emitting diode as the illumination, it is still necessary to develop a device capable of producing uniform, non-glare and large-area illumination.

The invention provides a reflector, a lamp unit and a lamp board, and the reflector is arranged in an occlusion by the closable structure on the reflector, so that the light of the part of the light source can be shielded, thereby reducing the occurrence of glare. In addition, such a shield design can also make the illumination uniform. On the other hand, the occlusion arrangement of the reflector can be arbitrarily expanded as required, so that a large area of illumination can be satisfied.

The lamp unit of the present invention comprises a reflector and a line source. The reflector includes a first curved surface portion and a second curved surface portion having a larger surface area than the first curved surface portion, wherein the linear light source is disposed on the first curved surface portion, and the first curved surface portion and the second curved surface portion and the line shape A surface of the same side of the light source is provided with a first reflecting surface; a portion of the light generated by the linear light source illuminates the second curved surface portion, and the first reflecting surface on the second curved surface portion forms the portion of the light to form approximately parallel reflected light.

The light panel of the present invention comprises a plurality of light-emitting diode strips and a plurality of reflectors. Each of the reflectors includes a first curved surface portion and a second curved surface portion, wherein each of the light emitting diode light strips is disposed on the first curved surface portion, and two adjacent reflective reflectors are a reflective cover The second curved surface portion is arranged to be overlapped on the first curved surface portion of the other reflective cover.

The reflector of the present invention is for reflecting light of a linear light source, and comprises a first curved surface portion and a second curved surface portion, wherein the surface area of the second curved surface portion is larger than the surface area of the first curved surface portion. The linear light source is disposed on the first curved surface portion, and the first curved surface portion and the second curved surface portion and the surface on the same side of the linear light source are jointly provided with a first reflecting surface; and the portion of the light generated by the linear light source illuminates the second surface The curved portion, the first reflective surface on the second curved portion causes the portion of the light to form approximately parallel reflected light.

In one embodiment, the back surface of the second curved surface portion of the reflector has a second reflecting surface. The second reflective surface can include a concave surface.

1 shows a perspective view of a light panel in accordance with an embodiment of the present invention. The light panel 100 shown in this embodiment is a light source device, which is composed of a plurality of light unit units 102 side by side in a partially overlapping manner, wherein the light unit 102 includes a reflector 104 and a light emitting diode lamp. Article 106. The reflector cover 104 is an elongated structure having a concave cross section, and is fixed to the socket 110 by a seating portion 108. The fin-shaped seating portion 108 can also serve as a heat dissipation structure. A plurality of reflectors 104 are arranged in a partially concealed manner to form a strip of light-emitting surface 112 that is substantially equidistantly spaced, and the light-emitting surfaces 112 are configured to cause the panel 100 to emit planar light.

Figure 2 shows a side view of a light panel in accordance with an embodiment of the present invention. The second curved surface portion 2042 of the reflector 204 has a shielding space 208 for receiving the first curved surface portion 2021 of the reflective cover 202. The corresponding structure allows the second curved surface portion 2042 to be stacked on the first curved surface portion 2021. Above, it becomes a part of the shadow and overlaps. Due to such a stacking arrangement, the light-emitting diode strips 106 disposed on the first curved surface portion 2021 are partially shielded from the second curved surface portion 2042. Similarly, the second curved surface portion 2062 of the reflective cover 206 is also placed on the first curved surface portion 2041 of the reflective cover 204 in an occluded manner, and the light emitting diode light strip 106 on the first curved surface portion 2041 of the reflective cover 204 is emitted. Part of the direct light is limited and reflected by the second curved portion 2062 of the reflector 206. Such an occlusion side-by-side arrangement can be arranged in a sequence according to the size of the lamp panel 100 to achieve a set width, showing that the invention has excellent expandability. The reflector 206 in the embodiment is located at the end of the array, after which no mask is provided to provide shielding. In the embodiment, an extended side portion 210 fixed to the socket 110 provides shielding of the first curved surface portion 2061, and the extended edge portion 210 has the same curved surface as the second curved surface portions 2022, 2042 and 2062.

Fig. 3 is a view showing the optical path of a lamp panel in accordance with an embodiment of the present invention. The front surface of the reflector 202 is a first reflecting surface 302 having a length corresponding to the LED strip 106 and surrounding the LED strip 106, one of the LED strips 106. The side extends to the desired illumination range. The extension length is different depending on the illumination range; the larger the illumination range, the longer the extension length needs to be. The back surface of the second curved surface portion 2042 of the reflector 204 has a second reflecting surface 304. The direct light that is blocked by the second curved surface portion 2042 of the LED strip 106 is reflected by the second reflecting surface 304 to the first reflecting surface. On face 302. The reflected light of the second reflecting surface 304 passes through the light emitting surface 112 after undergoing at least one reflection. Since the light-emitting diode light strip 106 is a light source with high directivity, by such an overlapping arrangement, a part of the direct light is reflected by one or more times and then passes through the light-emitting surface 112, so that the light is more concentrated and uniform. Moreover, the direct light that shields part of the angle is directly emitted from the light exit surface 112, that is, the problem of glare is avoided. The second reflecting surface 304 on the second curved surface portion 2042 is designed near the concave surface 306 at the end portion, so that the partially reflected light is reflected multiple times, so that the light utilization efficiency is higher and the light output is more uniform; in addition, such a design allows the shielding The range extends more efficiently, ie the same extension length can cover a wider area than the original surface, making it more economical to utilize in space.

Fig. 4 is a perspective view showing a lamp unit of an embodiment of the present invention. The lamp unit 400 includes a reflector 402 and a light-emitting diode strip 406. The front surface of the reflector 402 is a first reflecting surface 404, and the length of the first reflecting surface 404 corresponds to the LED strip 406 mounted thereon. The LED strip 406 is fixed to the first curved surface portion 408 by a fixing device (not shown), and the light is reflected by the first reflecting surface 404. The seating portion 410 is located on the back surface of the first curved surface portion 408 and includes a plurality of heat dissipation fins 412 for dissipating heat from the LED light strip 406. The reflector 402 can be composed of a plurality of aluminum reflectors. The aluminum reflector can include bumps that distribute the light evenly. The shape of the bump may include a cone or the like. The light-emitting diode light strip 406 can be used in a white light emitting diode or a light-emitting diode containing different colors, and can be applied to a situational simulation in accordance with a suitable control method.

Figure 5 is a perspective view showing a lamp unit of another embodiment of the present invention. When using a larger power LED strip 502, it can be a certain strength The light is projected farther away, so that it can be matched with a larger reflector 504 as shown in FIG. The advantage of using a larger reflector 504 is that the number of light unit units used can be reduced when illuminating the same area surface due to its ability to produce a larger illumination surface.

Figure 6 is a partial side elevational view of a lamp panel in accordance with another embodiment of the present invention. To prevent glare from occurring, a portion of the second curved surface portion 6041 of the reflector 604 is overlaid on the first curved surface portion 6021 of the reflective cover 602. The back surface of the portion where the second curved surface portion 6041 is used for the covering is a second reflecting surface 606. In order to avoid the glare problem and to make the illumination uniform, it is necessary to have a sufficient degree of shielding, so that the height of the portion where the second curved surface portion 6041 is used for the covering needs to be higher than the first curved surface portion 6021. The shape of the second curved surface portion 6041 is such that the intensity of the reflected light passing through the light-emitting surface 608 from the second reflecting surface 606 is not excessively weakened and the uniformity of the light emitted from the light-emitting surface 608 is taken into consideration. It is also contemplated in design to allow the reflected light to be properly projected onto the first reflective surface 610. Therefore, the design of the corresponding structure can make the lamp panel produce better luminous efficiency.

According to the above embodiments, the technology disclosed in the present invention has an excellent expandability that can easily meet the requirements of large-area illumination, a structure that can easily prevent glare generation, and a uniform light that can make a light-emitting diode lamp board with high directivity. .

The technical and technical features of the present invention have been disclosed as above, and those skilled in the art can still make various substitutions and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the present invention should be construed as being limited by the scope of the appended claims

100‧‧‧light board

102‧‧‧Light unit

104‧‧‧reflector

106‧‧‧Lighting diode strip

108‧‧‧Relocation Department

110‧‧‧ lamp holder

112‧‧‧Glossy

202, 204, 206‧‧ ‧ reflector

208‧‧‧shadow space

210‧‧‧Extended edge

302‧‧‧First reflecting surface

304‧‧‧second reflecting surface

306‧‧‧ concave

402‧‧‧reflector

404‧‧‧First reflective surface

406‧‧‧Lighting diode strip

408‧‧‧First curved surface

410‧‧‧Relocation Department

412‧‧‧Heat fins

502‧‧‧Lighting diode strip

504‧‧‧reflector

602, 604‧‧ ‧ reflector

606‧‧‧Second reflective surface

608‧‧‧Glossy surface

610‧‧‧First reflective surface

2021‧‧‧First curved surface

2022‧‧‧Second curved surface

2041‧‧‧First curved surface

2042‧‧‧Second curved surface

2061‧‧‧First curved surface

2062‧‧‧Second curved surface

6021‧‧‧Second curved surface

6041‧‧‧First curved surface

1 is a perspective view of a lamp panel according to an embodiment of the present invention; FIG. 2 is a side view of a lamp panel according to an embodiment of the present invention; FIG. 3 is a view showing an optical path of a lamp panel according to an embodiment of the present invention; A perspective view of a lamp unit of an embodiment; FIG. 5 is a perspective view of a lamp unit of another embodiment of the present invention; and FIG. 6 is a side view of a portion of the lamp panel of another embodiment of the present invention.

100‧‧‧light board

102‧‧‧Light unit

104‧‧‧reflector

106‧‧‧Lighting diode strip

108‧‧‧Relocation Department

110‧‧‧ lamp holder

112‧‧‧Glossy

Claims (11)

A light panel comprising: a plurality of light-emitting diode light strips; and a plurality of reflective covers, each of the reflective covers comprising a first curved surface portion and a second curved surface portion, wherein each of the light-emitting diode light strips is disposed on the light-emitting diode The first curved surface portion and the two adjacent reflective covers are arranged such that the second curved surface portion of the reflective cover is overlapped on the first curved surface portion of the other reflective cover. The light panel of claim 1, wherein the first curved surface portion and the second curved surface portion and the surface on the same side of the light emitting diode strip are provided with a first reflecting surface. The light panel of claim 2, wherein the surface of the second curved surface portion comprises a second reflective surface, and a portion of the light generated by the light emitting diode light strip illuminates the second reflective surface, the second reflective surface reflecting the portion The light is directed toward the first reflecting surface of the reflector that is adjacent to the reflector. A light panel according to claim 3, wherein the second reflecting surface comprises a concave surface. The light panel of claim 1, wherein the first curved surface portion includes a fixing device for fixing the light emitting diode light strip. The light panel of claim 1, wherein the first curved surface portion includes a seating portion, and the seating portion is disposed on a back surface of the first curved surface portion. The light panel of claim 6, wherein the seating portion comprises a plurality of fins. A light panel according to claim 1, wherein the reflector comprises a plurality of aluminum reflective sheets. A light panel according to claim 8, wherein the aluminum reflective sheet comprises a plurality of bumps. The light panel of claim 8, wherein the surface area of the first curved surface portion is smaller than the surface area of the second curved surface portion. According to the light board of claim 8, the part of the light generated by the light-emitting diode light strip is directly irradiated and reflected to the second curved surface portion, and the first reflective surface on the second curved surface portion forms the portion of the light into approximately parallel reflected light.