JP3228095U - Light guide plate and lighting equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light guide plate which does not require a light shielding ring used for blocking light rays emitted from an outer peripheral surface of the light guide plate and can reduce the cost of a lighting fixture. A light guide plate includes a substrate 1, and a through hole is formed in the center of the substrate 1, a side wall of the through hole constitutes an incoming light surface, and a bottom surface of the substrate 1 constitutes a first light emitting surface 12. The outer peripheral surface of the substrate 1 constitutes the second light emitting surface 13, and at least one annular groove 14 is provided in the substrate 1. The light rays emitted from the light emitting source enter the substrate 1 through the light incoming surface, and the light rays can be emitted from the first light emitting surface 12 and the second light emitting surface 13, respectively. An annular groove 14 is provided on the substrate 1, and the annular groove 14 is located between the first light emitting surface 12 and the second light emitting surface 13, so that the annular groove 14 emits light rays incident on the second light emitting surface 13. Since it can be reflected on the 1 light emitting surface 12, the intensity of the light beam emitted from the second light emitting surface 13 can be reduced, that is, the light intensity on the outer peripheral surface of the light guide plate can be reduced. [Selection diagram] Fig. 4

Description

The present invention belongs to the technical field of luminaires, and specifically relates to a light guide plate and a luminaire using the light guide plate.

Many UFO lights adopt a circular light guide plate made of acrylic, and emit light by dot processing with a laser on the upper surface of the light guide plate. Specifically, the light source is arranged in the center of the light guide plate, and the light rays emitted from the light source enter the light guide plate from the light entering surface of the light guide plate and exit from the bottom surface of the light guide plate.

Since the light guide plate has a certain thickness, the light rays incident from the light entering surface of the light guide plate may be emitted from the outer peripheral surface of the light guide plate, and the light intensity of the light rays emitted from the outer peripheral surface is high. It's so dazzling that I can't see it directly. In order to solve the above problems, light rays are currently blocked by adding a light-shielding ring on the outer peripheral surface of the light guide plate. However, the light-shielding ring needs to be circular in accordance with the shape of the light guide plate, the manufacturing efficiency is low, the light-shielding ring can be easily attached, the dimensional tolerance is difficult to control, and the cost of the lighting equipment is high.

The present invention provides a light guide plate for solving the problem that the light shielding ring used for blocking light rays emitted from the outer peripheral surface of the light guide plate in the prior art is inconvenient to process and attach, and the cost of the lighting equipment is high. The purpose is to do.

In order to achieve the above object, the present invention employs the following technical solutions. That is, the substrate is included, and a through hole for entering a light emitting source is provided in the center of the substrate, and the side wall of the through hole provides an incoming surface for the light rays radiated from the light emitting source to enter the substrate. The bottom surface of the substrate constitutes a first light emitting surface for emitting light rays, the outer peripheral surface of the substrate constitutes a second light emitting surface for emitting light rays, and the substrate has the second light emitting surface. At least one annular groove used to reflect the light rays incident on the surface to the first light emitting surface is opened, and each of the annular grooves is located between the incoming surface and the second light emitting surface. It is to provide a light plate.

Further, the annular groove includes a first inclined surface and a second inclined surface provided so as to be inclined on the central axis of the through hole, respectively.

Further, the first inclined surface intersects the second inclined surface, and the angle range between the first inclined surface and the second inclined surface is 30 ° to 90 °.

Further, the angle between the first inclined surface and the second inclined surface is 60 °.

Further, each annular groove is located on the substrate at a position close to the second light emitting surface.

Further, the annular grooves are at least two coaxially provided, and the annular grooves are provided on both sides of the substrate.

Further, the depth of each annular groove exceeds half the thickness of the substrate.

Another object of the present invention includes the above-mentioned light guide plate and a support base used for supporting the light guide plate, and the light guide plate provides a lighting fixture attached to the support base. Is.

Further, the support base includes a bottom base and a top base detachably connected to the bottom base, and the light guide plate is located between the bottom base and the top base.
A convex portion to be inserted into the through hole of the light guide plate is projected from the center of the bottom base toward the top base, and a light emitting body that emits light is fitted and fixed to the convex portion. The light emitter is located in the through hole.

Further, at least one positioning hole is formed in the light guide plate, and a positioning column for insertion into the positioning hole is attached to the bottom base.

As a beneficial effect of the light guide plate and the luminaire according to the present invention, as compared with the prior art, the light rays emitted from the light emitting source enter the substrate through the light incoming surface, and the light rays are the first light emitting surface and the first light emitting surface, respectively. 2 Can be emitted from the light emitting surface. An annular groove is formed in the substrate, the annular groove is located between the first light emitting surface and the second light emitting surface, and the annular groove reflects the light rays incident on the second light emitting surface to the first light emitting surface. The intensity of light rays emitted from the second light emitting surface can be reduced, and the light intensity on the outer peripheral surface of the light guide plate can be reduced. Therefore, the present invention eliminates the need for structural design of the light-shielding ring, and this light guide plate replaces the light-shielding ring, the light intensity on the outer peripheral surface of the light guide plate is weak, and the user does not feel dazzling even when directly viewed. The cost of lighting equipment can be effectively reduced.

In order to further clarify the technical solution according to the embodiment of the present invention, the drawings that need to be used for explaining the examples or the prior art will be briefly described below, but clearly, the following description will be given. The drawings in are only some examples of the present invention. Those skilled in the art can obtain other drawings from these drawings without any creative ingenuity.

It is a perspective view of the structure of the light guide plate which concerns on embodiment of this invention. It is a top view of the light guide plate which concerns on embodiment of this invention. It is sectional drawing of the light guide plate which concerns on embodiment of this invention. It is an enlarged view of the part A of FIG. It is an exploded view of the lighting equipment which concerns on embodiment of this invention. It is a structural schematic diagram of the bottom base which concerns on embodiment of this invention.

In order to make it easier to understand the technical problems, the technical solutions, and the effects of the invention to be solved by the present invention, the present invention will be described in detail with reference to the drawings and examples below. It should be understood that the specific examples described herein are merely for explaining the present invention and not for limiting the present invention.

When one member is referred to as being "fixed" or "installed" on another member, it may be located directly or indirectly on another member. It should be noted that when one member is referred to as being "connected" to another member, it may be directly or indirectly connected to another member.
Also, the terms "first" and "second" are used for explanatory purposes only, indicating or implying relative importance, or implying the number of technical features shown. Don't understand it as a purpose. Therefore, a feature limited by "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specified and specified.

In the description of the present invention, "center", "length", "width", "thickness", "top", "bottom", "front", "rear", "left", "right", "vertical" The orientation or positional relationship indicated by terms such as "horizontal", "top", "bottom", "inside", "outside" describes the present invention based on the orientation or positional relationship shown in the drawings. The present invention is intended to facilitate and simplify, not to indicate or imply that the device or component has a particular orientation and must be configured and operated in a particular orientation. Please understand that it is not intended to limit.
In the description of the present invention, the terms "mounting", "connection", and "connection" should be understood in a broad sense, unless otherwise specified and specified. For example, it may be a fixed connection, a detachable connection, or an integrated connection. It may be a mechanical connection or an electrical connection. It may be a direct connection or an indirect connection through an intermediary. The interiors of the two members may be communicative, or they may be an interaction of the two members. Those skilled in the art can understand the specific meanings of the above terms in the present invention based on specific situations.

Hereinafter, the light guide plate according to the embodiment of the present invention will be described with reference to FIGS. 1, 3 and 4. The light guide plate includes the substrate 1, and a through hole 10 for inserting a light emitting source is provided in the center of the substrate 1, and the side wall of the through hole 10 is for light rays emitted from the light emitting source to enter the substrate 1. The bottom surface of the substrate 1 constitutes a first light emitting surface 12 for emitting light rays, and the outer peripheral surface of the substrate 1 constitutes a second light emitting surface 13 for emitting light rays. The substrate 1 is provided with at least one annular groove 14 used to reflect light rays incident on the second light emitting surface 13 on the first light emitting surface 12, and each annular groove 14 has an incoming light surface 11 and a third. 2 It is located between the light emitting surface 13.

Optionally, each annular groove 14 is located close to the second light emitting surface 13 on the substrate 1, that is, the annular groove 14 and the light incoming surface 11 so that the light beam is uniformly emitted from the first light emitting surface 12. The distance between them is larger than the distance between the annular groove 14 and the second light emitting surface 13.

A process of forming dots with a laser is selectively performed on the upper surface of the substrate 1, and the light rays emitted from the light emitting source enter the substrate 1 and emit the light rays from the first light emitting surface 12 as much as possible. In order to reduce the intensity of the light rays emitted from the second light emitting surface 13, the outer peripheral surface of the substrate 1 is subjected to a matte treatment. Optionally, the substrate 1 is made of an acrylic material and is not uniquely limited herein.

Further, as shown in FIG. 4, as an embodiment of the light guide plate provided in the embodiment of the present invention, the annular grooves 14 extend to the first inclined surface 141 provided so as to be inclined to the central axis of the through hole 10. It includes two inclined surfaces 142. In this structure, the light rays incident from the light incoming surface 11 are reflected through the first inclined surface 141, and the light rays incident on the second light emitting surface 13 are diverged toward the two side surfaces of the substrate 1, whereby. The intensity of the light beam emitted from the second light emitting surface 13 is reduced. Further, the intensity of the light rays emitted from the second light emitting surface 13 is further reduced by reflecting the light rays of the other portion incident on the second light emitting surface 13 by the second inclined surface 142. Therefore, due to the double reflection of the first inclined surface 141 and the second inclined surface 142, the intensity of the light beam emitted from the second light emitting surface 13 is weakened, and the brightness of the light ray from the outer peripheral surface of the light guide plate is weakened. It is easy to look directly at the person and does not feel dazzling.

Optionally, the first slope 141 and the second slope 142 may be two parallel slopes or two intersecting slopes. The angle between the first inclined surface 141 and the central axis of the through hole, and the angle between the second inclined surface 142 and the central axis of the through hole may be adjusted according to the actual demand, and here only. Not limited to.

Further, as shown in FIG. 4, as one embodiment of the light guide plate provided in the embodiment of the present invention, the first inclined surface 141 intersects the second inclined surface 142, and the first inclined surface 141 and the first inclined surface 141 The angle range between the two inclined surfaces 142 is 30 ° to 90 °. Optionally, the angle between the first inclined surface 141 and the second inclined surface 142 is 60 °. In this structure, since the light rays emitted from the light emitting source can be effectively reflected on the first light emitting surface 12, most of the light rays emitted from the light emitting source are emitted from the first light emitting surface 12, and the light emitting effect of the lighting equipment. Will improve. In addition, the light intensity of the outer peripheral surface of the light guide plate is also reduced, and the brightness of the outer peripheral surface of the light guide plate is prevented from being too bright and dazzling. In other embodiments, the angle between the first inclined surface 141 and the second inclined surface 142 can be adjusted according to the actual demand, and is not limited to this.

Further, as shown in FIG. 4, as one embodiment of the light guide plate provided in the embodiment of the present invention, the depth of each annular groove 14 exceeds half the thickness of the substrate 1, that is, the depth of the annular groove 14. The thickness is smaller than the thickness of the substrate 1. In this structure, the bottom surface of the annular groove 14 and the corresponding side surfaces of the substrate 1 are provided at intervals, and a part of light rays can continue to be transmitted from this gap to the outer peripheral surface of the substrate 1, so that the entire light guide plate is lit. The irradiation effect of the lighting equipment is improved. In other embodiments, the depth of each annular groove 14 can be adjusted according to actual demand and is not uniquely limited herein.

Further, as shown in FIG. 4, as one embodiment of the light guide plate provided in the embodiment of the present invention, at least two annular grooves 14 are coaxially provided, and both surfaces of the substrate 1 are annular. A groove 14 has been opened. Optionally, the plurality of annular grooves 14 are sequentially spaced along the direction of the incoming light surface 11 toward the second light emitting surface 13, and the plurality of annular grooves 14 are divided into two groups and one. The annular groove 14 of the group is located on the upper surface of the substrate 1, and the annular groove 14 of the other group is located on the bottom surface of the substrate 1. In this structure, when the number of annular grooves 14 is two or more, the plurality of annular grooves 14 are divided into two groups, each of which is provided on two side surfaces of the substrate 1, and is alternately spaced sequentially. Be placed. After the light rays emitted from the light emitting source are reflected by the first inclined surface 141 and the second inclined surface 142 of the first annular groove 14, the intensity of the light rays irradiating the second light emitting surface 13 is reduced. Since the intensity of the light beam irradiating the second light emitting surface 13 is gradually reduced after the reflection is repeated a plurality of times by the plurality of annular grooves 14, the light intensity from the second light emitting surface 13 is also significantly reduced. The user can directly see the outer peripheral surface of the light guide plate and does not feel dazzling.

By alternately arranging the plurality of annular grooves 14, a plurality of annular grooves 14 can be formed on the substrate 1. Optionally, the sum of the depths of the two adjacent annular grooves 14 is greater than the thickness of the substrate 1, that is, there is a portion where the two adjacent annular grooves 14 overlap, so that multiple reflections of light rays can be realized. 2 The intensity of the light beam emitted from the light emitting surface 13 is reduced. In other embodiments, the number and arrangement of annular grooves 14 and the like can be adjusted according to actual demand and is not limited herein.

Optionally, as shown in FIG. 4, as one embodiment of the light guide plate provided in the embodiment of the present invention, the annular groove 14 has a V-shaped cross section. In this structure, the first inclined surface 141 and the second inclined surface 142 are arranged symmetrically with respect to the central axis of the annular groove 14, and have an excellent reflection effect on light rays. In other embodiments, the cross section of the annular groove 14 may have other shapes such as trapezoidal, circular, semi-circular, and is not limited thereto.

Hereinafter, the lighting fixture according to the embodiment of the present invention will be described with reference to FIGS. 5 and 6. The luminaire includes the light guide plate and a support base 2 used to support the light guide plate, and the light guide plate is attached to the support base 2.

The beneficial effects of the light guide plate and the luminaire according to the present invention are as follows. Compared with the prior art, the light rays emitted from the light emitting source enter the substrate through the light entering surface, and the light rays are the first. It can be emitted from one light emitting surface and a second light emitting surface. An annular groove is formed in the substrate, the annular groove is located between the first light emitting surface and the second light emitting surface, and the annular groove reflects the light rays incident on the second light emitting surface to the first light emitting surface. The intensity of light rays emitted from the second light emitting surface can be reduced, and the light intensity on the outer peripheral surface of the light guide plate can be reduced. Therefore, the present invention eliminates the need for structural design of the light-shielding ring, and this light guide plate replaces the light-shielding ring, the light intensity on the outer peripheral surface of the light guide plate is weak, and the user does not feel dazzling even when directly viewed. The cost of lighting equipment can be effectively reduced.

Further, as shown in FIGS. 5 and 6, as an embodiment of the lighting fixture provided in the embodiment of the present invention, the support base 2 is detachably connected to the bottom base 21 and the bottom base 21. The light guide plate is located between the bottom base 21 and the top base 22, including the base 22. A convex portion 211 to be inserted into the through hole 10 of the substrate 1 is projected from the center of the bottom base 21 toward the top base 22, and a light emitting body 212 that emits light is fitted to the convex portion 211. The light emitter 212 is located in the through hole 10. In this structure, the bottom base 21 and the top base clamp and fix the light guide plate, and the light rays emitted from the light emitting body 212 fitted and fixed to the convex portion 211 can be incident on the substrate 1 by the light incoming surface 11.

Optionally, as shown in FIGS. 5 and 6, a plurality of locking hooks 214 are provided on the outer peripheral surface of the convex portion 211, and the top base 22 is locked to engage with each locking hook 214. The holes 220 are provided correspondingly, thereby realizing a detachable connection between the bottom base 21 and the top base 22, and the bottom base 21 and the top base 22 are easily and quickly attached and detached. In another embodiment, a detachable connection may be realized between the bottom base 21 and the top base 22 by another method, and the present invention is not limited to this.

Optionally, as shown in FIG. 5, the illuminant 212 includes a lamp panel 2121 and a plurality of lamp beads 2122 provided on the lamp panel 2121, and the lamp panel 2121 is fitted and fixed to the convex portion 211. The lamp beads 2122 are attached to the side surface of the lamp panel 2121 facing the inner side wall of the through hole 10 to facilitate the light beam emitted from the lamp beads 2122 from entering the substrate 1 from the light entry surface 11.

Further, as shown in FIGS. 1 and 6, as one embodiment of the luminaire provided in the embodiment of the present invention, at least one positioning hole 15 is provided in the light guide plate, and the bottom base 21 is supported. A positioning column 213 for inserting into the positioning hole 15 is attached. In this structure, the substrate 1 can be realized to be provided at a designated position by positioning by engaging the positioning column 213 and the positioning hole 15, and the rotation of the substrate 1 can be prevented, and the stability of the substrate 1 is enhanced. Optionally, the positioning hole 15 communicates with the through hole 10, facilitating the processing and manufacturing of the positioning hole 15 and increasing the manufacturing efficiency. In other embodiments, the number and mounting positions of the annular grooves 15 can be adjusted according to actual demand and are not limited herein.

The above is only an excellent example of the present invention and does not limit the present invention. Any changes made within the spirit and principles of the present invention, replacements and improvements with equivalents, etc. are all within the scope of protection of the present invention.

1 Substrate 10 Through hole 11 Incoming surface 12 First light emitting surface 13 Second light emitting surface 14 Circular groove 141 First inclined surface 142 Second inclined surface 15 Positioning hole 2 Support base 21 Bottom base 211 Convex portion 212 Luminescent body 2121 Lamp panel 2122 Lamp beads 213 Positioning pillar 214 Locking hook 22 Top base 220 Locking hole

As a beneficial effect of the light guide plate and the luminaire according to the present invention, as compared with the prior art, the light rays emitted from the light emitting source enter the substrate through the light incoming surface, and the light rays are the first light emitting surface and the first light emitting surface, respectively. 2 Can be emitted from the light emitting surface. An annular groove is formed in the substrate, the annular groove is located between the first light emitting surface and the second light emitting surface, and the annular groove reflects the light rays incident on the second light emitting surface to the first light emitting surface. The intensity of light rays emitted from the second light emitting surface can be reduced, and the light intensity on the outer peripheral surface of the light guide plate can be reduced. Accordingly, the present invention is to eliminate the need for structural design of the shielding ring, the light guide plate is an alternative to the shielding ring, weak light intensity at the outer peripheral surface of the light guide plate, without dazzling feeling even to face the user , The cost of lighting equipment can be effectively reduced.

In the description of the present invention, "center", "length", "width", "thickness", "top", "bottom", "front", "rear", "left", "right", "vertical" The orientation or positional relationship indicated by terms such as "horizontal", "top", "bottom", "inside", "outside" describes the present invention based on the orientation or positional relationship shown in the drawings. The present invention is intended to facilitate and simplify, not to indicate or imply that the device or component has a particular orientation and must be configured and operated in a particular orientation. Please understand that it is not intended to limit.
In the description of the present invention, the terms "mounting", "connection", and "connection" should be understood in a broad sense, unless otherwise specified and specified. For example, it may be a fixed connection, a detachable connection, or an integrated connection. It may be a mechanical connection or an electrical connection. It may be a direct connection or an indirect connection through an intermediary. The interiors of the two members may be communicative, or they may be an interaction of the two members. Those skilled in the art can understand the specific meanings of the above terms in the present invention based on specific situations.

Further, as shown in FIG. 4, as one embodiment of the light guide plate provided in the embodiment of the present invention, the annular groove 14 is provided with the first inclined surface 141 and the first inclined surface 141 inclined to the central axis of the through hole 10, respectively. It includes two inclined surfaces 142. In this structure, the light rays incident from the light incoming surface 11 are reflected through the first inclined surface 141, and the light rays incident on the second light emitting surface 13 are diverged toward the two side surfaces of the substrate 1, whereby. The intensity of the light beam emitted from the second light emitting surface 13 is reduced. Further, the intensity of the light rays emitted from the second light emitting surface 13 is further reduced by reflecting the light rays of the other portion incident on the second light emitting surface 13 by the second inclined surface 142. Therefore, due to the double reflection of the first inclined surface 141 and the second inclined surface 142, the intensity of the light beam emitted from the second light emitting surface 13 is weakened, and the brightness of the light ray from the outer peripheral surface of the light guide plate is weakened. It is easy to look directly at the person and does not feel dazzling.

Claims (10)

It is a light guide plate, includes a substrate, and a through hole for entering a light emitting source is provided in the center of the substrate, and a side wall of the through hole is for light rays radiated from the light emitting source to enter the substrate. The bottom surface of the substrate constitutes the first light emitting surface of the ridge from which light rays are emitted, and the outer peripheral surface of the substrate constitutes the second light emitting surface for emitting light rays. At least one annular groove used to reflect the light rays incident on the second light emitting surface to the first light emitting surface is opened, and each annular groove is formed between the incoming surface and the second light emitting surface. A light guide plate characterized by being located. The light guide plate according to claim 1, wherein each of the annular grooves includes a first inclined surface and a second inclined surface provided so as to be inclined on the central axis of the through hole. 2. The first inclined surface intersects the second inclined surface, and the angle range between the first inclined surface and the second inclined surface is 30 ° to 90 °. The light guide plate described in. The light guide plate according to claim 3, wherein the angle between the first inclined surface and the second inclined surface is 60 °. The light guide plate according to claim 1, wherein each of the annular grooves is located at a position close to the second light emitting surface on the substrate. The light guide plate according to claim 1, wherein the annular groove is provided at least two coaxially, and the annular groove is provided on both surfaces of the substrate. The light guide plate according to any one of claims 1 to 6, wherein the depth of each annular groove exceeds half the thickness of the substrate. A lighting fixture including the light guide plate according to any one of claims 1 to 7 and a support base used for supporting the light guide plate, and the light guide plate is attached to the support base. Lighting equipment that is characterized by being The support base includes a bottom base and a top base detachably connected to the bottom base, and the light guide plate is located between the bottom base and the top base.
A convex portion to be inserted into the through hole of the light guide plate is projected from the center of the bottom base toward the top base, and a light emitting body that emits light is fitted and fixed to the convex portion. The luminaire according to claim 8, wherein the light emitting body is located in the through hole. The ninth aspect of the present invention, wherein the light guide plate is provided with at least one positioning hole, and the bottom base is correspondingly provided with a positioning column for insertion into the positioning hole. Lighting equipment.

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