CN219392311U

CN219392311U - Light guide plate with round corners and lamp

Info

Publication number: CN219392311U
Application number: CN202320565424.7U
Authority: CN
Inventors: 吴应忠; 班国初; 黎庆业; 凌康康
Original assignee: Guangdong Zhongwei Light Guide Technology Co ltd
Current assignee: Guangdong Zhongwei Light Guide Technology Co ltd
Priority date: 2023-03-21
Filing date: 2023-03-21
Publication date: 2023-07-21
Anticipated expiration: 2033-03-21

Abstract

The utility model discloses a light guide plate with round corners and a lamp, wherein the four corners of the light guide plate are designed to be round corners, and light guide points with larger density are arranged in the arc parts, so that the problems of dark light and uneven light emission at the four corners can be effectively solved. And the light inlet edges on four sides of the light guide plate are designed so as to be convenient for the subsequent matching with the light sources around the light guide plate. The brightness adjustment area can be arranged by adjusting the size of the internal light guide point, so that the problem that the brightness of the four corners is brighter than that of other areas when the round corners around the light guide plate are attached to the light bar is solved, and the light guide plate can emit light uniformly and has good light emitting effect. The lamp emits light more uniformly by arranging the light guide plate, which is beneficial to wide application. And through full spectrum LED light source, make light guide plate all around can evenly advance light, luminous even and luminance is unrestricted. And the full spectrum LED lamp strip can control the blue light peak value to reduce the risk of damaging retina photosensitive cells, so as to protect human eyes.

Description

Light guide plate with round corners and lamp

Technical Field

The utility model relates to the technical field of indoor illumination, in particular to a light guide plate with round corners and a lamp.

Background

The existing indoor illumination light guide plate is often installed inside a lamp so that the lamp emits light uniformly.

Chinese patent No. CN104881916U discloses a light guide plate assembly, a backlight module and a display, wherein a saw-tooth refractive protrusion is added at one end of a light incident surface of the light guide plate, so that incident light enters the light guide plate after being refracted at multiple angles and is emitted from a light emitting surface, thereby playing a role in improving brightness of the light guide plate. However, the light guide plate is of a square structure with four right angles, and when in actual use, dark areas exist at corners of the light guide plate, so that uneven light emission is caused. In order to solve the problem of shadow at four corners, four corners of the light guide plate are usually made into round corners, however, when the round corners around are attached to the light bar, bright areas with brightness being brighter than other areas appear at the four corners, so that the light guide plate emits light unevenly, and the overall light emitting effect is affected. In addition, it only is equipped with the luminous source at one side, does not set up the light source at all the other trilateral, leads to luminance limited, and to lamps and lanterns that are slightly bigger such as indoor lighting lamp, flat lamp, need the installation area bigger (like 1000mm 700 mm) light guide plate, just can realize required luminous effect and satisfy even luminous requirement, so this light guide plate subassembly can not satisfy the luminous requirement of above-mentioned lamps and lanterns.

In addition, the common luminous light source on the market is a common LED light bar, the LED spectrum of the common luminous light source is provided with obvious peaks and troughs, the spectrum proportion of the common luminous light source is disordered, the peaks of the blue light part of the common luminous light source are particularly prominent, the common luminous light source is a main source for forming damage to human retina, and if the common luminous light source is studied and operated in the illumination environment for a long time, the eye health of people is not facilitated.

Therefore, how to overcome the above-mentioned drawbacks has become an important issue to be solved by the person skilled in the art.

Disclosure of Invention

The utility model overcomes the defects of the technology and provides the light guide plate with the round corners and the lamp.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

on the one hand, a light guide plate with round corners comprises a light guide plate 1, wherein the light guide plate 1 is respectively provided with arc parts 11 at four corners, so that the light guide plate 1 with the four round corners is formed, the density of light guide points 100 in the arc parts 11 is greater than that of the area outside the arc parts 11, the sides of the periphery of the light guide plate 1 are light inlet edges, and brightness adjusting areas 12 for enabling brightness to be uniform by adjusting the size of the light guide points 100 are arranged in the light guide plate 1 at positions close to the round corners.

Preferably, the brightness adjustment region 12 is a circular region that is outwardly diffused with the center of the circular arc 11 as the center, and the size of the light guide point 100 in the circular region gradually increases from the center to the outside.

Preferably, the light guide plate 1 is made of PMMA light guide grade material.

On the other hand, the lamp comprises the light guide plate 1, the lamp frame 2 and the cover plate 3 used for fixing the light guide plate 1 in cooperation with the lamp frame 2, wherein the full-spectrum LED light source 4 used for emitting light to the light guide plate 1 is arranged on the peripheral side edge of the light guide plate 1.

Preferably, the full spectrum LED light source 4 is a full spectrum LED light bar capable of surrounding the periphery of the light guide plate 1.

Preferably, the lamp further comprises a reflecting sheet 5, foam 6 and a light-diffusing plate 7, wherein the reflecting sheet 5 is adhered to the back surface of the light guide plate 1, the light-diffusing plate 7 is adhered to the front surface of the light guide plate 1, and the foam 6 is clamped between the reflecting sheet 5 and the cover plate 3.

Preferably, the lamp frame 2 is reserved with a space for placing the light guide plate 1, the reflecting sheet 5, the foam 6, the light dispersion plate 7 and the full spectrum LED light source 4, and the cover plate 3 is provided with a plurality of uniformly arranged screw holes 31 around the periphery near the edge and is fixedly connected with the lamp frame 2 through screws.

Preferably, the light-diffusing plate 7 is a frosted light-diffusing plate made of frosted material.

Compared with the prior art, the utility model has the beneficial effects that:

1. this scheme light guide plate is through designing its four angles into the fillet to set up the great leaded light point of density in circular arc portion inside, can effectively solve the problem that four corners light is dark and luminous inhomogeneous. The light incoming edges on four sides are designed on the light guide plate so as to facilitate the following matching with the light sources surrounding the periphery of the light guide plate, so that the periphery of the light guide plate can be evenly fed with light, the light is even and the brightness is not limited, the light can be applied to slightly larger lamps such as indoor illuminating lamps and flat lamps, and the requirements of light emitting effect and even light emission are met. In addition, through the setting of brightness adjustment region, can be through adjusting inside leaded light spot size to effectively solve the problem that the bright group region that the luminance appears in four corners when the fillet laminating lamp strip all around of light guide plate, make the light guide plate luminous even, have good luminous effect.

2. The lamp can utilize the characteristics of the light guide plate with round corners and brightness adjustment areas by arranging the light guide plate, so that the lamp emits light more uniformly, has a good light emitting effect, and is beneficial to wide application. The full spectrum LED light source surrounding the periphery of the light guide plate is matched with the light inlet edges of the four sides of the light guide plate, so that the periphery of the light guide plate can uniformly enter light, the light emission is uniform and the brightness is not limited, the LED light source can be applied to slightly larger lamps such as indoor illuminating lamps and flat lamps, and the requirements of light emitting effect and uniform light emission are further met. In addition, the characteristics of continuous spectrum, professional color temperature control, high color rendering, no blue light damage, full spectrum and the like of the full-spectrum LED lamp strip are utilized, the damage risk of a blue light peak to retina photosensitive cells can be controlled, and natural and comfortable illumination experience is brought to eyes; meanwhile, the light rays of the device can truly and clearly restore the color of an object, avoid bad appearance caused by color cast, reduce visual fatigue and prevent myopia.

3. The lamp is provided with the reflecting sheet, so that the light exposed from the bottom surface can be reflected back to the light guide plate to improve the use efficiency of the light; under the condition of the same area of luminous brightness, the luminous efficiency is high, and the power consumption is low. The light is homogenized by a light-diffusing plate so as to emit light forward. And through the setting of bubble cotton, can the bed hedgehopping light guide plate's height to the light guide plate can aim at full spectrum LED light source all around when actual installation, is favorable to improving the utilization ratio of light energy.

Drawings

Fig. 1 is a schematic structural view of the light guide plate.

Fig. 2 is a schematic view of a partial structure of the inside of the light guide plate.

Fig. 3 is an enlarged partial schematic view at a of fig. 2.

Fig. 4 is an exploded view of the lamp.

Detailed Description

The following examples are provided to illustrate the features of the present utility model and other related features in further detail to facilitate understanding by those skilled in the art:

on the one hand, as shown in fig. 1 to 3, a light guide plate with rounded corners comprises a light guide plate 1, wherein the light guide plate 1 is respectively provided with circular arc portions 11 at four corners, so that the light guide plate 1 with the four rounded corners is formed, the density of light guide points 100 inside the circular arc portions 11 is greater than that of the area outside the circular arc portions 11, the four sides of the light guide plate 1 are light inlet edges, the brightness of the light guide plate 1 is uniform by adjusting the size of the light guide points 100 at the positions close to the rounded corners, and the whole light guide plate 1 is provided with 4 brightness adjusting areas 12. In specific implementation, the design of the density of the light guide points 100 is automatically designed by optical distribution software, and the software is Gtools LGP software. The light guide point 100 is formed by laser-marking dots on the surface of the light guide plate 1. The light incoming edge is polished so that light of a light source component matched with the light guide plate 1 subsequently enters from the light incoming edge. The length of the light guide plate 1 is about 1000mm, the width is about 700mm, the radius of the arc part 11 is about 80mm, and different sizes can be designed according to the actual demands of products.

As described above, the light guide plate 1 according to the present embodiment is designed to have rounded corners, and the light guide points 100 having a high density are provided in the circular arc portion 11, so that the problems of darkness and uneven light emission at the four corners can be effectively solved. The light-entering edges on four sides are designed on the light guide plate 1 so as to facilitate the following matching with the light sources surrounding the periphery of the light guide plate 1, so that the periphery of the light guide plate 1 can be uniformly light-entering, the light emission is uniform and the brightness is not limited, the light-emitting device can be applied to slightly larger lamps such as indoor illuminating lamps and flat lamps, and the requirements of light-emitting effect and uniform light emission are met. In addition, through the setting of brightness adjustment area 12, can be through adjusting inside leaded light spot 100 size to effectively solve the problem that the bright group area that the luminance appears in four corners when the fillet laminating lamp strip around light guide plate 1, make light guide plate 1 luminous even, have good luminous effect.

As shown in fig. 2 and fig. 3, in the embodiment, the brightness adjustment area 12 is a circular area that is outwardly diffused with the center of the circular arc 11 as the center, and the size of the light guide point 100 in the circular area gradually increases from the center to the outside, so that the light guide point 100 gradually increases from the center to the outside, and the brightness of the circular area and other areas is adjusted to be balanced, so that uniform light emission of the light guide plate 1 is realized, and the light guide plate is beneficial to being widely applied to different lamps. In actual manufacturing, the light guide points 100 are processed by laser dots with different sizes. As shown in fig. 3, the radius of one light guide point 100 located at the outer side is R1, and the radius R2 of the other light guide point 100 located closer to the center of the circular area than the one light guide point 100 is R1 is greater than R2.

In the above embodiments, the light guide plate 1 is made of PMMA light guide grade material. Therefore, the light guide plate 1 can keep the shape at normal temperature and has certain elasticity, and can be well matched with a matched lamp. And PMMA material low cost in order to save the cost.

On the other hand, as shown in fig. 4, a lamp comprises the light guide plate 1, the lamp frame 2 and the cover plate 3 for fixing the light guide plate 1 in cooperation with the lamp frame 2, wherein the light source 4 for emitting light to the light guide plate 1 is arranged on the periphery of the side edge, namely the light inlet edge, of the light guide plate 1. In specific implementation, the light of the full spectrum LED light source 4 enters from the light entrance side.

As described above, the lamp can utilize the characteristics of the light guide plate 1 with the fillets and the brightness adjustment areas 12 by arranging the light guide plate 1, so that the lamp emits light more uniformly, has a good light emitting effect, and is beneficial to wide application. The full spectrum LED light source 4 surrounding the periphery of the light guide plate 1 is matched with the light inlet edges of the four sides of the light guide plate 1, so that the periphery of the light guide plate 1 can uniformly enter light, the light emission is uniform and the brightness is not limited, the LED light source can be applied to slightly larger lamps such as indoor illuminating lamps and flat lamps, and the requirements of light emitting effect and uniform light emission are further met. In addition, the characteristics of continuous spectrum, professional color temperature control, high color rendering, no blue light damage, full spectrum and the like of the full-spectrum LED lamp strip are utilized, the damage risk of a blue light peak to retina photosensitive cells can be controlled, and natural and comfortable illumination experience is brought to eyes; meanwhile, the light rays of the device can truly and clearly restore the color of an object, avoid bad appearance caused by color cast, reduce visual fatigue and prevent myopia.

In the above embodiment, the full spectrum LED light source 4 is a full spectrum LED light bar capable of surrounding the side edges of the light guide plate 1, that is, the light incoming edge, wherein the full spectrum LED light bar can be adhered to the inner wall of the lamp frame 1 in an adhering manner. So, the installation of full spectrum LED lamp strip is nimble, can encircle to install including fillet department around light guide plate 1 to guarantee that the light source of full spectrum LED lamp strip can shine light guide plate 1 and advance every department on smooth limit all around, be favorable to the even luminous of light guide plate 1. Meanwhile, the full-spectrum LED lamp strip is efficient and stable, and no shadow exists at the joint.

As shown in fig. 4, in the embodiment, the light guide plate assembly body further includes a light reflecting sheet 5, foam 6, and a light diffusing plate 7, wherein the light reflecting sheet 5 is adhered to the back surface of the light guide plate 1, the light diffusing plate 7 is adhered to the front surface of the light guide plate 1, and the foam 6 is sandwiched between the light reflecting sheet 5 and the cover plate 3.

As described above, the lamp provided with the reflective sheet 5 can reflect the light exposed from the bottom surface back to the light guide plate 1 to improve the light use efficiency; under the condition of the same area of luminous brightness, the luminous efficiency is high, and the power consumption is low. The light is homogenized by the diffuser 7 to give forward light. And through the setting of bubble cotton 6, can fill up the height of light guide plate 1 to light guide plate 1 can aim at full spectrum LED light source 4 all around when the actual installation, is favorable to improving the utilization ratio of light energy.

As shown in fig. 4, in the implementation, the lamp frame 1 is reserved with a space for placing the light guide plate 1, the reflective sheet 5, the foam 6, the light diffusion plate 7 and the full-spectrum LED light source 4, and the cover plate 3 is provided with a plurality of uniformly arranged screw holes 31 near the periphery of the edge and is fixedly connected with the lamp frame 1 through screws, so that all components mounted on the lamp frame 1 are fixed. Thus, the fixing device has good fixing and protecting effects, and is convenient to mount, dismount, maintain and replace in the later period.

In the specific implementation, the light-diffusing plate 7 is a frosted light-diffusing plate made of frosted materials. Thus, the light can be dispersed by the frosted material so as to realize uniform light emission better.

As described above, the present disclosure protects a light guide plate with rounded corners and a lamp, and all technical schemes which are the same as or similar to the present disclosure should be shown as falling within the protection scope of the present disclosure.

Claims

1. The utility model provides a take light guide plate of fillet, includes light guide plate (1), its characterized in that light guide plate (1) are equipped with circular arc portion (11) in four corners department respectively to form light guide plate (1) of taking four fillets, the inside light guide point (100) density of circular arc portion (11) is greater than the region outside circular arc portion (11), light guide plate (1) side all is the edge of intaking all around, light guide plate (1) are inside all to be equipped with in being close to fillet department and make luminance uniform brightness adjustment region (12) through adjustment light guide point (100) size.

2. The light guide plate with rounded corners according to claim 1, wherein the brightness adjusting region (12) is a circular region which is outwardly diffused with the center of the circular arc portion (11) as the center, and the size of the light guide point (100) inside the circular region is gradually increased from the center to the outside.

3. A light guide plate with rounded corners according to claim 1, characterized in that the light guide plate (1) is a light guide plate (1) made of PMMA light guide grade material.

4. A lamp, characterized by comprising the light guide plate (1) according to any one of claims 1 to 3, a lamp frame (2) and a cover plate (3) for fixing the light guide plate (1) in cooperation with the lamp frame (2), wherein the peripheral side edge of the light guide plate (1) is provided with a full spectrum LED light source (4) for emitting light to the light guide plate.

5. A lamp as claimed in claim 4, characterized in that the full spectrum LED light source (4) is a full spectrum LED light bar which can be wound around the peripheral side of the light guide plate (1).

6. A lamp as claimed in claim 4 or 5, characterized in that the lamp further comprises a reflector (5), foam (6) and a light-diffusing plate (7), wherein the reflector (5) is adhered to the back surface of the light-guiding plate (1), the light-diffusing plate (7) is adhered to the front surface of the light-guiding plate (1), and the foam (6) is sandwiched between the reflector (5) and the cover plate (3).

7. The lamp according to claim 4, wherein the lamp frame (2) is provided with a space for placing the light guide plate (1), the reflecting sheet (5), the foam (6), the light dispersion plate (7) and the full spectrum LED light source (4), and the cover plate (3) is provided with a plurality of evenly arranged screw holes (31) around the periphery near the edge and is fixedly connected with the lamp frame (2) through screws.

8. A luminaire as claimed in claim 6, characterized in that the light-diffusing plate (7) is a frosted light-diffusing plate made of frosted material.