JP3178835U - Reflective sheet having light guide dots, LED flat light source, LED flat panel light, and flat panel LED light - Google Patents

Abstract

A linear light source can be converted to a planar light source, can emit uniform and soft light, has high luminous efficiency, is relatively low in cost, has a simple structure, and is easy to implement. A structure of a sheet, an LED flat light source, an LED flat panel light, and a flat panel LED light is provided.
A reflection sheet is formed by printing a plurality of light guide dots on a reflection surface of a reflection plate, and has a light guide function as well as a reflection function. The flat panel light and the flat panel LED light each employ the reflection sheet.
[Selection] Figure 2

Description

  The utility model relates to the photoelectric field, and specifically, a reflection sheet such as lighting, a backlight module of a display or a light box, and various LED flat light sources (LED flat panel light or flat panel LED light) using the reflection sheet. (Also known as) the structure.

  In the prior art, conversion of a linear light source to a planar light source is realized by a light guide plate. The light guide plate in the prior art uses an optical class acrylic (PMMA) sheet material, and prints light guide dots on the bottom surface of the optical class acrylic sheet material with an ink that has extremely high reflectance and does not absorb light. It is comprised by. The retention of light emitted from the light on the surface of the optical class acrylic sheet material is absorbed by the optical class acrylic sheet material, and when the light reaches each light guide dot, the reflected light diffuses to each angle and the reflection conditions And is emitted from the front of the light guide plate. The light guide plate can emit light uniformly through light guide dots of different density and size. Usually, the light guide plate is used in combination with a reflection sheet on the back surface, and the use of the reflection sheet is to reflect the light emitted from the bottom surface of the light guide plate into the light guide plate, thereby increasing the light usage rate. . As can be seen from the structure and principle of the prior art light guide plate as described above, the light guide dots on the prior art light guide plate were directly printed on the bottom surface of the light guide plate. This process is very difficult in actual operation and the yield rate is relatively low, so the cost is high and light is lost when propagating in the light guide plate, and the light efficiency is about 25% or more Is wasted.

  LED (Light Emitting Diode) technology has been widely used due to advantages such as power saving, high brightness, long service life, good vibration resistance, etc. In recent years, LED lights have been used in daily lighting and display backlight modules. It is being applied more and more widely. As a relatively normal operation, for example, an LED lamp panel is configured such that a plurality of LED lamp holders are arranged in a matrix in a lamp cover, and a corresponding drive circuit is installed in the lamp cover. Although such a structure is simple and practical, the LED lamp panel employs a direct type LED light source, so it is relatively dazzling and the uniformity of emitted light is not good (the uniformity is less than 70%). Is). Accordingly, LED flat lights have been developed by those skilled in the art, and this type of LED flat light has a flat shape, and all members therein are also flat. The LED flat light is mainly configured by attaching a planar reflector, a light guide plate and a diffusion plate in sequence in the base, and mounting LED strips in the bottom plate and on the sides of the light guide plate. Reflecting the light multiple times by the combined action of the reflector and the light guide plate, the effect of increasing the uniformity is achieved, and the glare is effectively prevented by the diffusion plate. As can be seen from the above structure and principle, the core of this type of LED flat light is to convert a linear light source into a planar light source by the action of the light guide plate. Optical class acrylic (PMMA) sheet material was used for the light guide plate in the prior art, but as can be seen from the structure and principle of the light guide plate, the light guide dots on the light guide plate of the prior art are directly Printed on the bottom. This process is very difficult in actual operation, the yield rate is relatively low, and the price of the optical class acrylic sheet material is relatively high, resulting in the high cost of the prior art LED flat light Its application, propulsion and development are also hindered to some extent, and light is lost when propagating in the light guide plate, and about 25% or more of light efficiency is wasted.

  In order to overcome the above defects, the present utility model provides a reflective sheet having light guide dots, an LED flat light source using the reflective sheet, an LED flat panel light and a flat panel LED light, and the reflective sheet and the LED flat surface. With a light source, LED flat panel light and flat panel LED light, a linear light source can be converted into a planar light source, planar light emission can be realized, uniform and soft light can be emitted, and the cost is low The structure is simple and easy to implement.

  In order to solve the technical problem, this utility model adopts the following technical plan.

  The utility model is provided with a reflecting plate having a reflecting surface, and a reflecting sheet having light guiding dots, in which a plurality of light guiding dots are printed on the reflecting surface of the reflecting plate. Preferably, the light guide dots are made of ink. As can be seen from the above structure of the reflection sheet of the utility model, the reflection sheet in the utility model not only has a conventional reflection function, but also has a transparent plate (a sheet material such as acrylic or glass) or When using a combination of air layers, when light enters from the transparent plate or air layer and reaches each light guide dot on the reflective surface of the reflector, the reflected light diffuses to each angle, destroying the reflection conditions. The light is emitted from the front, whereby the linear light source can be converted into a planar light source. Therefore, the reflective sheet in this utility model not only has a light guide function, but in this utility model, compared with the high cost of the conventional light guide plate formed by printing light guide dots on the back side of the transparent plate. The technology of printing light guide dots on the reflector plate is relatively low and has the same effect, which is advantageous for improving market share.

  This utility model provides an LED planar light source. The LED flat light source includes a reflecting plate, a diffusing plate, an LED light source, and a frame, and the reflecting plate has two opposing surfaces, which are a reflecting surface and a back surface, respectively. A plurality of light guide points are printed, the diffuser plate is located on a side having the reflective surface of the reflector, and a gap is formed between the diffuser plate and the reflective surface, and the light guide A structure that softens light rays is formed by a reflector, a gap, and a diffusion plate on which dots are printed, and the structure that softens the light rays is fixed in the frame at a side edge thereof, and the LED light source is placed in the frame Installed and located on the side of the gap. The light emitted from the LED light source is incident from the side to the gap, and when reaching each light guide dot on the reflection surface of the reflector, the reflected light diffuses to each angle, breaks the reflection condition, and then The light is emitted from the front of the gap, whereby the linear light source can be converted into a planar light source. In addition to providing light guiding dots, the reflecting plate can further increase the light usage rate by reflecting light into the gap, and the diffusing plate can effectively prevent glare. Therefore, uniform and soft light can be emitted from the LED flat light source of this utility model, and the luminous efficiency is high. Compared with the high cost of the light guide plate in the prior art, the structure and the technology for printing the light guide dots on the reflector without using the light guide plate of this utility model are relatively low, and the light guide plate is not adopted. Therefore, loss of light efficiency due to the light guide plate can be avoided, and further, the light efficiency can be increased by 25% compared with the prior art, which is more effective.

  Preferably, in the LED planar light source, a reflective sheet (the reflective sheet here is a conventional type that does not have light guide dots) except for the side where the LED light source is provided inside the frame. A reflection sheet) is provided. These reflective sheets are used to increase the light usage rate and prevent the light from being absorbed by the frame.

  Preferably, in the LED flat light source, a bottom plate is further provided, and the bottom plate is laminated on a back surface of the reflection plate, and is fixed in the frame on a side thereof. Of course, it is not necessary to install the bottom plate depending on the strength of the reflection plate. If the strength of the reflection plate is appropriate, the bottom plate can be omitted.

  Preferably, in the LED planar light source, the LED light source is an LED strip.

  Preferably, in the LED planar light source, the LED strip is at least one, and the LED strip is installed on a side edge of the structure that softens the light beam, and the light emitting part of the LED strip is a side of the gap. It corresponds to.

  Preferably, in the LED planar light source, the light guide dots are made of ink.

  The utility model further provides an LED flat panel light. The LED flat panel light includes a base, a reflecting plate, a transparent plate, a diffusion plate, an LED light source, and a frame. The reflecting plate, the transparent plate, and the diffusion plate are each plate-shaped, and sequentially The optical sandwich structure is formed by laminating, the optical sandwich structure is located on the base in the reflector, the LED light source is located on the side of the transparent plate, and the frame is the optical sandwich structure. The surface that is fitted to the periphery and is in solid contact with the base, and is laminated with the transparent plate, is a reflective surface, and a plurality of light guide dots are printed on the reflective surface of the reflective plate. ing. Light emitted from the LED light source is incident on the transparent plate from the side and reaches each light guide dot on the back surface of the transparent plate (that is, the reverse side of the reflector). Is emitted from the front surface of the transparent plate, whereby the linear light source can be converted into a planar light source. In addition to providing light guiding dots, the reflecting plate can further increase the light usage rate by reflecting light into the transparent plate, and can effectively prevent glare by the diffusion plate. Therefore, uniform and soft light can be emitted from the LED flat panel light of this utility model, and the luminous efficiency is high. And compared with the high cost of the light guide plate in a prior art, the cost of the technique which prints the light guide dot of this utility model on a reflecting plate is comparatively low, and the effect is the same.

  Preferably, in the LED flat panel light, the transparent plate is one of an acrylic plate, a glass plate, and a polycarbonate plate.

  Preferably, in the LED flat panel light, the LED light source is an LED strip.

  Preferably, in the LED flat panel light, one or a plurality of the LED strips are provided, and a light emitting portion of the LED strip corresponds to a side of the transparent plate.

  Preferably, in the LED flat panel light, the light guide dots are made of ink.

  The utility model further provides a flat panel LED light. The flat panel LED light includes a base, a reflecting plate, a glass plate, an LED light source, and a frame. The reflecting plate and the glass plate are each plate-like, and are laminated in order to form an optical sandwich structure. The optical sandwich structure is located on the base in the reflector, the LED light source is located on the side of the glass plate, the frame is fitted to the periphery of the optical sandwich structure, And the surface of the glass plate that is laminated with the reflector is the back surface, the other surface is the front surface, and the front surface of the glass plate is uneven and has a rough surface that is not flat. The surface of the reflecting plate that is laminated with the glass plate is a reflecting surface, and a plurality of light guide dots are printed on the reflecting surface of the reflecting plate. Light emitted from the LED light source is incident on the glass plate from the side and reaches each light guide dot on the back surface of the glass plate (that is, the reflection surface of the reflection plate). The conditions are broken and the light is emitted from the front surface of the glass plate, whereby the linear light source can be converted into a planar light source. In addition to providing light guiding dots, the reflector can further increase the usage rate of light by further reflecting light into the glass plate. Since the front surface of the glass plate is uneven and has a rough surface, glare can be effectively prevented instead of the conventional diffusion plate. Therefore, uniform and soft light can be emitted from the utility model flat panel LED light, and the luminous efficiency is high. And the cost of the technology to print the light guide dots of this utility model on the reflector compared to the high cost of the conventional technology that adopts the diffusion plate and acrylic light guide plate and prints the light guide dots on the back of the acrylic plate Is relatively low. Moreover, since the light guide structure is formed in combination with the glass plate and the front surface of the glass plate has a light diffusion function at the same time, the cost is relatively low and the effect is the same.

  Preferably, in the flat panel LED light, the front surface of the glass plate may be a matte surface formed by a matte treatment or an etched surface formed by corrosion of a corrosive agent.

  Preferably, in the flat panel LED light, the LED light source is an LED strip.

  Preferably, in the flat panel LED light, one or a plurality of the LED strips are provided, and a light emitting portion of the LED strip corresponds to a side of the glass plate.

  Preferably, in the flat panel LED light, the light guide dots are made of ink.

  The beneficial effects of this utility model are as follows. The reflection sheet having light guide dots in this utility model has a plurality of light guide dots printed on the reflection surface of the reflection plate, so that it has not only a conventional reflection function but also light on each reflection surface. When the light reaches the light guide dot, the reflected light diffuses to each angle, breaks the reflection condition, and is emitted from the front, whereby the linear light source can be converted into a planar light source. Therefore, the said reflective sheet has a light guide function further, and the cost of the technique which prints a light guide dot on a reflecting plate is also comparatively low. The LED flat light source in this utility model adopts the reflection sheet of this utility model, the diffusion plate is located on the side having the anti-slope of the reflection plate, and a gap is formed between the diffusion plate and the reflection surface, The light emitted from the LED light source is incident from the side to the gap, and when reaching each light guide dot on the reflection surface of the reflector, the reflected light is diffused to each angle and emitted from the front of the gap. The linear light source can be converted into a planar light source. In addition to providing light guiding dots, the reflecting plate can further increase the usage rate of light by reflecting light into the gap, and the diffusing plate can effectively prevent glare. Therefore, uniform and soft light can be emitted from the LED flat light source of this utility model, and the luminous efficiency is high. The structure and technology of printing light guide dots on the reflector without using the light guide plate in the LED flat light source of this utility model is relatively low, and it is possible to avoid the loss of light efficiency due to the light guide plate. Better. The LED flat panel light of this utility model also adopts the reflection sheet of this utility model, and the light emitted from the LED light source is incident on the transparent plate from the side and reaches each light guide dot. It diffuses to an angle and is emitted from the front surface of the transparent plate, whereby the linear light source can be converted into a planar light source. In addition to providing light guiding dots, the reflecting plate can further increase the light usage rate by reflecting light into the transparent plate, and can effectively prevent glare by the diffusion plate. Therefore, uniform and soft light can be emitted from the LED flat panel light of this utility model, and the luminous efficiency is high. And the cost of the technique which prints the light guide dot of this utility model on a reflecting plate is comparatively low, and the effect is the same. The utility model flat panel LED light also adopts the utility model reflection sheet, and the light emitted from the LED light source is incident on the glass plate from the side and reaches each light guide dot on the opposite slope of the reflector plate. The reflected light is diffused to each angle and emitted from the front surface of the glass plate, whereby the linear light source can be converted into a planar light source. In addition to providing light guiding dots, the reflector can further increase the usage rate of light by further reflecting light into the glass plate. Since the front surface of the glass plate is uneven and has a rough surface, glare can be effectively prevented instead of the conventional diffusion plate. Therefore, uniform and soft light can be emitted from the utility model flat panel LED light, and the luminous efficiency is high. And in the flat panel LED light of this utility model, the light guide dots are printed on the reflection plate, and the light guide structure is formed in combination with the glass plate, and the front side of the glass plate has a light diffusion function at the same time. The cost is relatively low and the effect is the same.

It is the structure schematic of the reflective sheet which has the light guide dot which concerns on this utility model. It is the structure schematic of the LED plane light source which concerns on this utility model. It is the structure schematic of the LED flat panel light which concerns on this utility model. It is the structure schematic of the flat panel LED light which concerns on this utility model.

  Example 1: A reflection sheet having light guide dots is provided with a reflection plate A1 having a reflection surface A11, and a plurality of light guide dots A2 are printed on the reflection surface A11 of the reflection plate A1. The light dot A2 is made of ink. The reflector A1 is made of a material having a reflection function.

  Example 2: The LED flat light source includes a reflection plate 2, a diffusion plate 4, an LED light source 5, and a frame 6. The reflection plate 2 has two opposing surfaces which are a reflection surface and a back surface, respectively, and a plurality of light guide points 21 are printed on the reflection surface of the reflection plate 2, and the diffusion plate 4 is the reflection plate 2, the gap 3 is formed between the diffusion plate 4 and the reflection surface 2, and the reflection plate 2, the gap 3 and the diffusion plate 4 on which the light guide dots are printed. The structure for softening the light beam is formed, and the structure for softening the light beam is fixed in the frame 6 at the side edge thereof, and the LED light source 5 is installed in the frame 6 and the gap 3 side. Located on the side.

  Inside the frame 6, except for the side where the LED light source 5 is provided, the other side is provided with a reflection sheet 7 (the reflection sheet here is a conventional reflection sheet having no light guide dots). The reflective sheet is used to increase the light usage rate by reflecting the light into the gap and prevent the light from being absorbed by the frame.

  A bottom plate 1 may be further provided depending on the required strength. The bottom plate 1 is laminated on the back surface of the reflecting plate 2, and its side is fixed in the frame 6. Of course, it is not necessary to install the bottom plate depending on the strength of the reflection plate. If the strength of the reflection plate is appropriate, the bottom plate can be omitted.

  The LED light source 5 is an LED strip, and the LED strip is at least one, and is installed on a side edge of the structure that softens the light beam, and a light emitting portion of the LED strip is on a side of the gap 3. It corresponds.

  The light guide dots 21 are made of ink.

  The LED planar light source of the utility model may be square or other possible shapes.

  Example 3: The LED flat panel light includes a base B1, a reflection plate B2, a transparent plate B3, a diffusion plate B4, an LED light source B5, and a frame B6. The reflection plate B2, the transparent plate B3, and the diffusion plate B4 are each plate-shaped, and are sequentially laminated to form an optical sandwich structure, and the optical sandwich structure is located on the base B1 in the reflection plate, The LED light source B5 is located on the side of the transparent plate B3, and the frame B6 is fitted to the periphery of the optical sandwich structure and is in close contact with the base B1, and the transparent plate B2 is transparent. The surface laminated with the plate B3 is a reflective surface, and a plurality of light guide dots B21 are printed on the reflective surface of the reflective plate.

  The transparent plate B3 is a kind of an acrylic plate, a glass plate, and a polycarbonate plate.

  The LED light source B5 is an LED strip.

  One or a plurality of the LED strips are provided, and the light emitting portion of the LED strip corresponds to the side of the transparent plate B3.

  The light guide dot B21 is made of ink.

  The reflector B2 is made of a material having a reflection function.

  The base B1, the reflecting plate B2, the transparent plate B3, the diffusing plate B4, and the frame B6 each have a square shape or other shapes.

  The light emitted from the LED light source is incident on the transparent plate from the side and reaches the respective light guide dots on the back surface of the transparent plate (that is, the reflective surface of the reflective plate). Is emitted from the front surface of the transparent plate, whereby the linear light source can be converted into a planar light source. In addition to providing light guiding dots, the reflecting plate can further increase the light usage rate by reflecting light into the transparent plate, and can effectively prevent glare by the diffusion plate. Therefore, uniform and soft light can be emitted from the LED flat panel light of this utility model, and the luminous efficiency is high. And compared with the high cost of the light guide plate in a prior art, the cost of the technique which prints the light guide dot of this utility model on a reflecting plate is comparatively low, and the effect is the same.

  Example 4: The flat panel LED light includes a base C1, a reflecting plate C2, a glass plate C3, an LED light source C4, and a frame C5. The reflection plate C2 and the glass plate C3 are each plate-shaped, and are sequentially laminated to form an optical sandwich structure. The optical sandwich structure is positioned on the base C1 in the reflection plate, and the LED light source C4. Is located on the side of the glass plate C3, and the frame C5 is fitted to the periphery of the optical sandwich structure and is in firm contact with the base 1, with the reflector C2 of the glass plate C3. The surface to be laminated is the back surface, the other surface is the front surface, the front surface C31 of the glass plate is a rough surface that is uneven and not flat, and the surface of the reflecting plate C2 that is laminated with the glass plate C3 is reflective. A plurality of light guide dots C21 are printed on the reflecting surface of the reflecting plate.

  The front surface C31 of the glass plate may be a matte surface formed by a matte treatment or an etched surface formed by corrosion of a corrosive agent.

  The LED light source C4 is an LED strip.

  One or a plurality of the LED strips are provided, and the light emitting portion of the LED strip corresponds to the side of the glass plate C3.

  The light guide dot C21 is made of ink.

  The reflector C2 is made of a material having a reflection function.

  The base C1, the reflection plate C2, the transparent plate C3, and the frame C5 are each rectangular.

  Light emitted from the LED light source is incident on the glass plate from the side and reaches each light guide dot on the back surface of the glass plate (that is, the reflection surface of the reflection plate). The conditions are broken and the light is emitted from the front surface of the glass plate, whereby the linear light source can be converted into a planar light source. In addition to providing light guiding dots, the reflector can further increase the usage rate of light by further reflecting light into the glass plate. Since the front surface of the glass plate is uneven and has a rough surface, glare can be effectively prevented instead of the conventional diffusion plate. Therefore, uniform and soft light can be emitted from the utility model flat panel LED light, and the luminous efficiency is high. And the cost of the technology to print the light guide dots of this utility model on the reflector compared to the high cost of the conventional technology that adopts the diffusion plate and acrylic light guide plate and prints the light guide dots on the back of the acrylic plate Is relatively low. Moreover, since the light guide structure is formed in combination with the glass plate and the front surface of the glass plate has a light diffusion function at the same time, the cost is relatively low and the effect is the same.

Claims (19)

A reflector having a reflective surface is provided;
A plurality of light guiding dots are printed on the reflecting surface of the reflecting plate,
A reflective sheet having a light guide dot. The light guide dots are made of ink.
The reflection sheet having the light guide dots according to claim 1. A reflection plate, a diffusion plate, an LED light source, and a frame;
The reflecting plate has two opposing surfaces that are a reflecting surface and a back surface, respectively, and a plurality of light guide points are printed on the reflecting surface of the reflecting plate,
The diffusion plate is located on the side having the reflection surface of the reflection plate, and a gap is formed between the diffusion plate and the reflection surface,
The structure that softens the light beam is formed by the reflector, the gap, and the diffusion plate on which the light guide dots are printed, and the structure that softens the light beam has its side edges fixed in the frame
The LED light source is installed in the frame and is located on a side of the gap.
An LED flat light source characterized by that. Inside the frame, except for the side where the LED light source is provided, a reflective sheet is provided on each other inside,
The LED flat light source according to claim 3. A bottom plate is further provided,
The bottom plate is laminated on the back surface of the reflecting plate, and the sides thereof are fixed in the frame.
The LED flat light source according to claim 3. The LED light source is an LED strip;
The LED flat light source according to claim 3. The LED strip is at least one, and the LED strip is installed on a side edge of the structure that softens the light beam, and a light emitting portion of the LED strip corresponds to a side of the gap.
The LED flat light source according to claim 6. The light guide dots are made of ink.
The LED flat light source according to claim 3. A base, a reflector, a transparent plate, a diffuser, an LED light source, and a frame;
The reflecting plate, the transparent plate, and the diffusing plate are each plate-like, and are sequentially laminated to form an optical sandwich structure, and the optical sandwich structure is located on the base in the reflecting plate,
The LED light source is located on a side of the transparent plate,
The frame is fitted to the periphery of the optical sandwich structure and is fixed to the base;
The surface of the reflective plate that is laminated with the transparent plate is a reflective surface, and a plurality of light guide dots are printed on the reflective surface of the reflective plate.
LED flat panel light characterized by this. The transparent plate is a kind of acrylic plate, glass plate and polycarbonate plate,
The LED flat panel light according to claim 9. The LED light source is an LED strip;
The LED flat panel light according to claim 9. The LED strip is at least one, and the light emitting portion of the LED strip corresponds to the side of the transparent plate.
The LED flat panel light according to claim 11. The light guide dots are made of ink.
The LED flat panel light according to claim 9. A base, a reflector, a glass plate, an LED light source, and a frame;
The reflecting plate and the glass plate are each plate-like, and are sequentially laminated to form an optical sandwich structure, and the optical sandwich structure is located on the base in the reflecting plate,
The LED light source is located on a side of the glass plate,
The frame is fitted to the periphery of the optical sandwich structure and is fixed to the base;
The surface of the glass plate to be laminated with the reflection plate is the back surface, the other surface is the front surface, the front surface of the glass plate is uneven and has a rough surface,
The surface of the reflecting plate that is laminated with the glass plate is a reflecting surface, and a plurality of light guide dots are printed on the reflecting surface of the reflecting plate.
A flat panel LED light characterized by that. The front surface of the glass plate is a matte surface formed by a matte treatment,
The flat panel LED light according to claim 14. The front surface of the glass plate is an etched surface formed by corrosion of a corrosive agent,
The flat panel LED light according to claim 14. The LED light source is an LED strip;
The flat panel LED light according to claim 14. The LED strip is at least one, and the light emitting portion of the LED strip corresponds to the side of the glass plate.
The flat panel LED light according to claim 17. The light guide dots are made of ink.
The flat panel LED light according to claim 14.

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