TWI665404B - Light emitting device - Google Patents

Abstract

The invention provides a light-emitting device, which includes: a housing, a light-emitting source, a graphic filter layer, a fragmented light-transmitting layer, and a light-transmitting resin layer. The light emitted by the light-emitting source is filtered by the graphic. The light-transmitting pattern of the light layer is filtered, and after refracting, reflecting, and / or diffusing in the fragmented light-transmitting layer, light is emitted from the light-transmitting resin layer.

Description

Light emitting device

The present invention relates to a light source for a display device, and particularly to a light emitting device.

Kanban, signboards, light boxes, etc. are common display devices set up for publicity and reminders in the market. Among them, those who have a light source and can enhance the display effect with light are the mainstream. This type of display device usually sets up a light source behind the transparent or translucent display panel to allow light to pass through the display panel to increase brightness and eye-catching, so as to achieve better display effects.

However, as the light source is a point light source, the light emitted is often too convergent, and only one bright block corresponding to the position of the light bulb will be displayed on the display panel, and the other places will be dim. , The entire display panel cannot be illuminated by the entire surface, which causes the display content to be blurred and greatly reduces the display effect.

Therefore, the object of the present invention is to provide a light emitting device that can uniformly emit light to effectively illuminate the entire required range.

The technical means adopted by the present invention to solve the problems of the conventional technology is to provide a light-emitting device, which includes: a housing including a peripheral side wall, and the peripheral side wall surrounds a setting space, and the housing A front opening communicating with the setting space is formed on the front side; a light source is disposed on the rear side of the housing, and the front side of the light source is a light emitting surface, the light emitting surface faces the front opening; a graphic filter Layer, disposed in the setting space, and disposed on the front side of the light emitting surface of the light source, the graphic filter layer includes a light transmitting plate and a pattern layer formed on the front side or the rear side of the light transmitting plate, the pattern The layer has a plurality of pattern blocks with different light transmittances, and a predetermined light transmission pattern is formed from the plurality of pattern blocks. A fragment light transmission layer is located in the setting space. The fragment light transmission layer It includes a plurality of fragmented light transmissive bodies of indefinite shape, the plurality of fragmented light transmissive bodies are gathered into a pile and adhered to the front side and / or the rear side of the graphic filter layer through a light-transmitting glue; and a light-transmitting resin; A layer disposed in the setting space and disposed in front of the graphic filter layer, wherein the light emitted by the luminous source is filtered by the transparent pattern of the graphic filter layer and passes through the fragment Refraction, reflection and And / or diffuse and emit light from the transparent resin layer.

In a light emitting device according to an embodiment of the present invention, the casing is a 3D printing-molded casing.

In a light-emitting device according to an embodiment of the present invention, the housing has a partition wall group extendingly connected between the peripheral side walls, and the installation space is partitioned into a plurality of partition spaces in a cross-sectional direction. The light-transmitting layer has respective thicknesses in different partition spaces, and the light-transmitting resin layer has respective thicknesses in different partition spaces.

In a light emitting device according to an embodiment of the present invention, the light emitting source includes a plurality of point light sources, and the plurality of point light sources are arranged in a planar shape to form a surface light source.

In a light-emitting device according to an embodiment of the present invention, the light-emitting source is a monochromatic light source, a color-changing light source, or a multi-color light source.

In a light-emitting device according to an embodiment of the present invention, in the graphic filter layer, the pattern layer is a patterned adhesive film attached to the light-transmitting plate; or the pattern layer is a spray-painted layer formed by spraying On the light-transmitting plate; or the pattern layer is a watermark layer, which is formed on the light-transmitting plate in a watermark manner.

In a light-emitting device according to an embodiment of the present invention, the light-transmitting glue is a glue treated with chloroform and a whitening inhibitor.

In a light-emitting device according to an embodiment of the present invention, the light-transmitting resin layer is a colored resin layer to which a pigment is added; or the light-transmitting resin layer is a sequin resin layer in which sequins are dispersed.

In a light-emitting device according to an embodiment of the present invention, it further includes a rear-side mounting portion disposed on the rear side of the light source, and a rear side of the rear-side mounting portion is provided with a ferromagnetic mounting piece for performing magnetic attraction. Erection of the light-emitting device.

In a light-emitting device according to an embodiment of the present invention, the ferromagnetic mounting sheet includes a positive-electrode connection sheet and a negative-electrode connection sheet. The positive-electrode connection sheet is coated on the surface with a conductive paint and is electrically connected to the light-emitting device. The ferromagnetic mounting sheet of the positive power supply terminal of the source is a ferromagnetic mounting sheet coated with a conductive paint on the surface and electrically connected to the negative power supply terminal of the light emitting source, so that the light emitting device is attracted by magnetic force. At the same time, the light source is electrically connected to a power source through the conductive paint of the positive electrode connection sheet and the negative electrode connection sheet, respectively.

Through the technical means adopted by the present invention, the light provided by the light-emitting device will be repeatedly refracted, reflected, and / or diffused in the light-transmitting layer of the particles before being emitted, so that the beam is originally bundled and oriented in a single direction The transmitted light becomes divergent in multiple directions, so that the outgoing light will spread more evenly, and can effectively illuminate the entire required range (for example, the entire display surface of the display panel). Furthermore, the light of the light-emitting device is still filtered by the light-transmitting pattern, so that the pattern and / or color of the light can be adjusted to meet different light-emitting requirements.

100‧‧‧light-emitting device

100a‧‧‧light-emitting device

100b‧‧‧light-emitting device

1‧‧‧shell

10‧‧‧ front opening

11‧‧‧ week side wall

12‧‧‧area next door

2‧‧‧light source

20‧‧‧ Illuminated surface

201‧‧‧Positive power terminal

202‧‧‧ Negative power terminal

21‧‧‧point light source

3‧‧‧graphic filter

31‧‧‧Translucent plate

32‧‧‧ pattern layer

33‧‧‧Translucent graphics

4‧‧‧ broken light transmission layer

41‧‧‧ Fragmented Light Transmitters

42‧‧‧Transparent glue

5‧‧‧Transparent resin layer

6‧‧‧ rear mounting section

61‧‧‧ Ferromagnetic mounting piece

62‧‧‧Positive pole

62a‧‧‧Conductive paint

63‧‧‧ negative pole

63a‧‧‧Conductive paint

7‧‧‧ support plate

71‧‧‧magnet

72‧‧‧Conductive paint

8‧‧‧ Power

[Fig. 1] A schematic cross-sectional view showing a light-emitting device according to an embodiment of the present invention; [Fig. 2] A perspective view showing a housing of a light-emitting device according to an embodiment of the present invention; [Fig. 3] ] Is a schematic sectional view showing a light emitting device according to another embodiment of the present invention; [FIG. 4] is a schematic sectional view showing a light emitting device according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 4. This description is not intended to limit the embodiment of the present invention, but is an example of the embodiment of the present invention.

As shown in FIG. 1, a light-emitting device 100 according to an embodiment of the present invention includes a housing 1 including a peripheral side wall 11, and the peripheral side wall 11 surrounds a setting space, and is located in front of the housing 1. A front opening 10 communicating with the installation space is formed; a light emitting source 2 is disposed at the rear side of the housing 1, and a front side of the light emitting source 2 is a light emitting surface 20, and the light emitting surface 20 faces the front opening 10. A graphic filter layer 3 disposed in the setting space and disposed on the front side of the light emitting surface 20 of the light source 2, the graphic filter layer 3 includes a light transmitting plate 31 and is formed before the light transmitting plate 31 A pattern layer 32 on the side or the back side, the pattern layer having a plurality of pattern blocks with different transmissivity, and a predetermined light transmissive pattern 33 is formed from the plurality of pattern blocks; a fragmented light transmissive layer 4. Located in the installation space, the fragmented light-transmitting layer includes a plurality of fragmented light-transmitting bodies 41 of indefinite shape, and the plurality of fragmented light-transmitting bodies 41 are gathered into a pile and adhered to the through a transparent glue 42. The front side and / or the back side of the graphic filter layer 3; and a light-transmitting resin layer 5 provided on the device Space, and arranged on the side of the pattern before the filter layer 3, wherein the light emitting source 2 The emitted light is filtered by the light-transmitting pattern 33 of the pattern filter layer 3 and passes through the refracting, reflecting, and / or diffusing in the light-transmitting particle layer 4 to pass from the light-transmitting resin layer 5 sold out.

Specifically, as shown in FIG. 1, according to a light emitting device 100 according to an embodiment of the present invention, the casing 1 is a 3D printing-molded casing. As the name implies, the 3D printing-molded casing is a casing formed by 3D printing, and can be designed into various shapes according to requirements. Preferably, in this embodiment, the casing 1 is detachably combined with the light emitting source 2, the graphic filter layer 3, the particle transparent layer 4 and the transparent resin layer 5, This makes it easy to change and replace each component. In addition, as shown in FIG. 2 and FIG. 3, in a light-emitting device 100 a according to another embodiment of the present invention, the casing 1 has a partition wall group 12, which is extendedly connected between the peripheral side walls 11. The installation space is divided into a plurality of partition spaces in a cross-section direction. The broken particle light-transmitting layers 4 have respective thicknesses in different partition spaces, and the light-transmitting resin layer 5 is in different partition spaces. Has its own thickness. With such a structure, the light rays corresponding to the individual partition spaces can have different luminous effects due to the differences in the respective thicknesses of the particle transparent layer 4 and the transparent resin layer 5, and can meet more different luminous requirements. .

As shown in FIG. 1, according to a light-emitting device 100 according to an embodiment of the present invention, the light-emitting source 2 includes a plurality of point light sources 21, and the plurality of point light sources 21 are arranged in a plane to form a surface light source. Specifically, in this embodiment, the point light source 21 is an LED, and a plurality of LEDs are arranged in a flat shape into an LED lamp board as a surface light source to provide relatively uniform light. Preferably, the light source 2 may be a single-color light source, a color-changing light source, or a multi-color light source according to different light-emitting requirements, and may be implemented by using a single-color LED, a color-changing LED, a plurality of different-color LEDs, or other methods, respectively. .

As shown in FIG. 1, FIG. 3 and FIG. 4, in the light-emitting device 100 according to the embodiment of the present invention, in the graphic filter layer 3, the light-transmitting plate 31 is preferably an acrylic plate. It has sufficient light transmittance and strength, and is lighter in weight than glass, which can reduce the overall weight of the light emitting device 100 and facilitate transportation. The pattern layer 32 may be formed on the front side of the graphic filter layer 3 (such as the light emitting devices 100 and 100a according to the embodiment of the present invention in FIG. 1 and FIG. 2) or on the rear side of the graphic filter layer 3 (such as the first Fig. 4 shows a light emitting device 100b) according to an embodiment of the present invention. The pattern layer 32 may have a plurality of pattern blocks with different light transmission properties, such as high light transmission and low light transmission blocks (for example, transparent blocks and translucent blocks), light transmission and non-transmission. Optical blocks (for example: hollowed out blocks and unopened shielded blocks), blocks with different colors and different light transmission (for example: blue and yellow blocks), or any of them Combination, as long as it can provide different filtering effects. Specifically, the patterned layer 32 may be a patterned adhesive film, which is attached to the light-transmitting plate 31. Preferably, the color of the patterned adhesive film may be a single color, a color, and the color may be formed gradually. Layered. Alternatively, the pattern layer 32 may be a spray-painted layer formed on the light-transmitting plate 31 by spraying, wherein the spray-painted layer may be paint, ink or other paint, and the spray-painted layer may be formed by surface spray paint, UV inkjet Printing or other spraying methods. Alternatively, the pattern layer 32 may be a watermark layer, and is formed on the transparent plate 31 in a watermark manner. In addition, the light-transmitting pattern 33 of the pattern layer 32 may be a meaningful text, a symbol, or a meaningless pattern or pattern, which is not limited in the present invention.

As shown in FIG. 1 to FIG. 4, according to the light emitting device according to the embodiment of the present invention, the broken particle light-transmitting layer 4 may be disposed on a side surface behind the graphic filter layer 3 (as in the embodiment of the present invention shown in FIG. 1). Light emitting device 100), the front side of the graphic filter layer 3 (such as the light emitting device 100a of the embodiment of the present invention shown in FIG. 2), or both the front side and the rear side of the graphic filter layer 3 (such as the fourth side) The light emitting device 100b) of the embodiment of the present invention is shown in the figure. Furthermore, in the broken particle light-transmitting layer 4, the plurality of broken particle light-transmitting bodies 41 may be broken particles of plastic, glass, or other various light-transmitting materials. The light-transmitting glue 42 is, for example, a glue of a resin material, and is transparent or translucent so as not to affect the propagation of light in the light-transmitting particle layer 4. Preferably, the light-transmitting glue 42 is a glue treated with chloroform and an anti-whitening agent. This glue has a better performance in preventing atomization and air bubbles, and can effectively reduce the transmission of light through the particles. The effect of propagation in layer 4. In addition, the The granular light transmitting body 41 may be various colors, such as red or green, and the light emitted by the light source 2 is changed in color through the granular light transmitting body 41 to obtain light of a specific color.

As shown in FIG. 1, FIG. 2 and FIG. 4, according to the light-emitting device according to the embodiment of the present invention, the light-transmitting resin layer 5 may be a sequin resin layer in which sequins are dispersed (such as the present invention shown in FIG. 1). The light-emitting device 100 of the embodiment) may be a colored resin layer (such as the light-emitting device 100b according to the embodiment of the present invention shown in FIG. 4) added with a pigment, or may be a simple transparent resin layer (as shown in FIG. 2). The light emitting device 100a) of the embodiment of the present invention.

As shown in FIG. 1, FIG. 2 and FIG. 4, the light-emitting device according to the embodiment of the present invention further includes a rear-side mounting portion 6 disposed on the rear side of the light-emitting source 2 and the rear-side mounting portion 6. A ferromagnetic mounting piece 61 is provided on the side surface for mounting the light-emitting device by magnetic attraction. For example, the ferromagnetic mounting piece 61 may be a magnet, and is attracted to and magnetized by a magnet 71 provided at a place to be mounted (for example, a support plate 7) (as shown in FIG. 1). ) Or directly attached to the support plate 7 made of ferromagnetic material (as shown in Figure 2). Alternatively, the ferromagnetic mounting piece 61 may be an iron piece, which is attracted to the support plate 7 by being attracted by the magnet 71 on the support plate 7 (as shown in FIG. 4).

Preferably, as shown in FIG. 1, the ferromagnetic mounting sheet 61 includes a positive electrode connection sheet 62 and a negative electrode connection sheet 63. The positive electrode connection sheet 62 is coated with a conductive paint 62a on the surface and is electrically conductive. The ferromagnetic mounting sheet is connected to the positive power supply terminal 201 of the light emitting source 2. The surface of the negative electrical connection sheet 63 is coated with conductive paint 63a and is electrically connected to the negative power supply terminal 202 of the light emitting source 2. 100 While being erected by magnetic attraction, the light-emitting source 2 is passed through the conductive paint 62a, 63a (and the conductive paint 72 on the support plate 7) of the positive-electrode connection sheet 62 and the negative-electrode connection sheet 63, respectively. And is electrically connected to a power source 8. Of course, the present invention is not limited to this. As shown in FIG. 2 and FIG. 4, in other embodiments of the light emitting devices 100 a, In 100b, the light emitting source 2 may be directly and electrically connected to the power source 8 without passing through the positive electrode connection sheet 62 and the negative electrode connection sheet 63.

With the above structure, the light provided by the light-emitting devices 100, 100a, and 100b of the present invention will be repeatedly refracted, reflected, and / or diffused in the particle light-transmitting layer 4 before the light is emitted, so that the light is originally received. The light beams that propagate in a single direction become divergent in multiple directions, so that the light rays that are emitted will spread more evenly, and can effectively illuminate the entire required range. Furthermore, the light of the light-emitting devices 100, 100a, and 100b is still filtered by the light-transmitting pattern 33, so that the pattern and / or color of the light rays can be adjusted to meet different light-emitting requirements.

The above descriptions and descriptions are merely illustrations of the preferred embodiments of the present invention. Those with ordinary knowledge of this technology may make other modifications based on the scope of the patent application defined below and the above description, but these modifications should still be made. It is the spirit of the present invention and is within the scope of the present invention.

Claims (7)

A light-emitting device includes: a housing including a peripheral side wall, the peripheral side wall surrounding a setting space, and a front opening communicating with the setting space is formed on a front side of the housing; a light-emitting source is provided on the housing; On the rear side of the housing, the front side of the light source is a light emitting surface that faces the front opening; a graphic filter layer is disposed in the setting space and is disposed on the front side of the light emitting surface of the light source. The graphic filter layer includes a light transmitting plate and a pattern layer formed on the front or rear side of the light transmitting plate. The front side of the light transmitting plate faces the front opening, and the rear side of the light transmitting plate faces the light emitting surface. The pattern The layer has a plurality of pattern blocks with different light transmittances, and a predetermined light transmission pattern is formed from the plurality of pattern blocks, and the light transmission pattern faces or faces away from the light emitting surface; a fragmented light transmission layer Located in the installation space, the fragmented light-transmitting layer includes a plurality of fragmented light-transmitting bodies of an indefinite shape, and the plurality of fragmented light-transmitting bodies are gathered into a pile and adhered to the graphic filter layer through a light-transmitting glue. Front side and / or rear side ; And a light-transmitting resin layer disposed in the setting space and disposed in front of the graphic filter layer, wherein the light emitted by the luminous source is filtered by the light-transmitting graphic of the graphic filter layer And after refracting, reflecting and / or diffusing in the light-transmitting layer of broken particles, and emitting light from the light-transmitting resin layer, the shell has a partition wall group, which is extendedly connected between the peripheral side walls, and The installation space is divided into a plurality of partition spaces in the cross-section direction. The broken particle light-transmitting layers have respective thicknesses in different partition spaces, and the light-transmitting resin layers have respective respective partition spaces in different partition spaces. Thickness, the light-emitting device further includes a rear-side mounting portion provided on the rear side of the light-emitting source, and a rear side of the rear-side mounting portion is provided with a ferromagnetic mounting piece for erection of the light-emitting device by magnetic attraction, wherein The ferromagnetic mounting sheet includes a positive electrode connection sheet and a negative electrode connection sheet. The positive electrode connection sheet is a ferromagnetic mounting sheet coated with a conductive paint on the surface and electrically connected to the positive power terminal of the light emitting source. Power strip It is a ferromagnetic mounting sheet coated with a conductive paint on the surface and electrically connected to the negative power terminal of the light emitting source, so that the light emitting device is erected by magnetic attraction while the light emitting source is respectively connected through the positive electrode connecting sheet and The negative electrode is electrically connected to a power source through the conductive paint of the sheet. The light-emitting device according to claim 1, wherein the casing is a 3D printing-molded casing. The light-emitting device according to claim 1, wherein the light-emitting source includes a plurality of point light sources, and the plurality of point-light sources are arranged in a planar shape to form a surface light source. The light-emitting device according to claim 1, wherein the light-emitting source is a monochromatic light source, a color-changing light source, or a multi-color light source. The light-emitting device according to claim 1, wherein in the graphic filter layer, the pattern layer is a patterned adhesive film attached to the light-transmitting plate; or the pattern layer is a spray paint layer formed by spraying on The transparent plate; or the pattern layer is a watermark layer, and is formed on the transparent plate in a watermark manner. The light-emitting device according to claim 1, wherein the transparent adhesive is a glue treated with chloroform and a whitening inhibitor. The light-emitting device according to claim 1, wherein the light-transmitting resin layer is a colored resin layer to which a pigment is added; or the light-transmitting resin layer is a sequin resin layer in which sequins are dispersed.