CN209991303U

CN209991303U - Side-light-emitting lamp without light guide plate

Info

Publication number: CN209991303U
Application number: CN201921088604.0U
Authority: CN
Inventors: 涓ヨタ; 严西
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-11
Filing date: 2019-07-11
Publication date: 2020-01-24
Anticipated expiration: 2029-07-11

Abstract

The utility model discloses a luminous lamps and lanterns of no light guide plate side, including framework, lamp strip, light-emitting diffuser plate, backplate are installed relatively respectively in the front and the back of framework, vacuole formation between light-emitting diffuser plate and the backplate, in framework side-mounting in the framework the lamp strip is provided with a plurality of lamp pearls on the lamp strip and sends light extremely from the side of framework the cavity, still be provided with lens and middle reflection piece in the framework, lens are located between lamp strip and the middle reflection piece, the light that lens conduction lamp pearl sent, middle reflection piece reflects the light that lens afferent to the light-emitting diffuser plate. The utility model provides the high homogeneity and the light-emitting efficiency of luminous lamps and lanterns illuminance of no light guide plate side can popularize and be applied to jumbo size lamps and lanterns.

Description

Side-light-emitting lamp without light guide plate

Technical Field

The utility model relates to the technical field of lighting fixtures, especially, relate to a luminous lamps and lanterns of no light guide plate side.

Background

The LED flat lamp is a lamp which converts an LED point light source into large-area surface light, and has simple and elegant form and soft and uniform light emitting effect, so that the LED flat lamp has natural advantages when used for replacing a grille lamp and used in offices and families, and has very wide application prospect. In order to convert a point light source into a surface light, there are two schemes of direct light emission and side light emission.

The existing side-emitting lamp is divided into a scheme with a light guide plate and a scheme without the light guide plate, the lamp with the light guide plate mainly comprises a PMMA light guide plate and a PS light guide plate, the use of the PMMA light guide plate has the defects of high cost, easy aging and yellowing, high scrapping and recycling cost and the like, and the lamp without the light guide plate is expected to appear in the market.

According to the optical theory, the illuminance calculation formula is E ═ I/(R ×) and the illuminance and the square of the distance are in inverse proportion, the position close to the LED light source is very bright, and the illuminance far away from the LED light source is quickly reduced until the illuminance approaches to 0, so that the single light-emitting lamp on the side without the light guide plate in the prior art scheme can only achieve about 200 × 200mm, once the size is increased, the illuminance of the light-emitting lamp on the side without the light guide plate is not uniform, the use effect is affected, and the requirements of mainstream large-size flat lamps in markets such as 595mm cannot be met.

Therefore, the prior art has yet to be developed.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned prior art's weak point, the utility model aims at providing a do not have luminous lamps and lanterns of light guide plate side aims at improving the homogeneity of the luminous lamps and lanterns illuminance of no light guide plate side, and popularizes and applies to jumbo size lamps and lanterns.

In order to achieve the purpose, the utility model adopts the following technical proposal:

the light emitting diffusion plate and the back plate are respectively and oppositely arranged on the front side and the back side of the frame, a cavity is formed between the light emitting diffusion plate and the back plate, the light bar is arranged on the side face of the frame in the frame, a plurality of lamp beads are arranged on the light bar, light is emitted from the side face of the frame to the cavity, a lens and an intermediate reflection piece are further arranged in the frame, the lens is located between the light bar and the intermediate reflection piece, the light emitted by the lamp beads is conducted by the lens, and the light transmitted by the lens is reflected to the light emitting diffusion plate by the intermediate reflection piece.

The inner surface of the light-emitting diffusion plate is provided with triangular prism structures to increase the included angle between the emergent light and the emergent surface of the light-emitting diffusion plate.

The middle reflector comprises a mounting connecting surface and a reflector reflecting surface, the mounting connecting surface is connected with the back plate, and the reflector reflecting surface reflects light rays emitted by the lens to the light emitting diffusion plate;

the reflecting surface of the reflecting piece is an outward-expanding inclined curved surface from one end of the back plate to one end of the light-emitting diffusion plate.

The installation distance between the intermediate reflector and the lens in the frame body is adjustable.

The lens is in a long strip shape, the cross section of the lens comprises a first refraction surface arranged in front of the lamp bead, a second refraction surface and a third refraction surface which are respectively arranged at two connection ends of the first refraction surface, a first reflection surface and a second reflection surface which are respectively connected with the second refraction surface and the third refraction surface, a light condensation surface arranged on a light emergent path of the first refraction surface, and a first light emitting surface and a second light emitting surface which are arranged at two ends of the light condensation surface and are respectively connected with the first reflection surface and the second reflection surface.

The light-gathering surface is a convex lens surface which deviates from the light bar and protrudes into the cavity.

A first connecting column and a second connecting column are arranged between the second refraction surface and the first reflection surface and between the third refraction surface and the second emission surface and are connected with the lamp strip;

the first connecting column, the second refraction surface, the first refraction surface, the third refraction surface and the second connecting column cover the front of the lamp bead.

The lens and the lamp strip form an integrated assembly structure.

The lamp strips are respectively arranged on two opposite side walls of the frame body, the lens correspondingly comprises two lamp strips respectively close to two sides of the frame body, and the middle reflector comprises two reflector reflecting surfaces which respectively conduct light rays of the two lenses.

Wherein, the lens is of a PMMA or PC material structure.

The utility model discloses a luminous lamps and lanterns of no light guide plate side, through set up lens and middle reflection piece in the framework, lens get into the cavity after refracting with the light of framework side lamp pearl transmission, shine on the light-emitting diffuser plate by the diffuse reflection play on, the part is similar to and is jetted out after being reflected to the light-emitting diffuser plate under the effect of middle reflection piece with light-emitting diffuser plate parallel direction's light, the illumination intensity of the department of being far away from the light source has been compensated by the light of middle reflection piece reflection, the illumination intensity homogeneity that light jetted out from the light-emitting diffuser plate has been improved, thereby break through the restriction of size among the prior art and be applied to large size lamps and lanterns.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is an exploded schematic view of a first embodiment of a light-emitting lamp without a light guide plate side according to the present invention;

fig. 2 is a schematic view of a partial cross-sectional structure of the light-emitting lamp without the light guide plate side of the present invention;

FIG. 3 is a schematic view of light transmission in the structure of FIG. 2;

FIG. 4 is a schematic structural view of the cross section of the frame body of the present invention;

FIG. 5 is a schematic structural view of a partial cross section of a light-emitting diffuser plate according to the present invention;

FIG. 6 is a schematic structural view of a cross section of the intermediate reflector of the present invention;

FIG. 7 is a schematic structural view of a cross section of a lens according to the present invention;

fig. 8 is an enlarged schematic view of a portion a in fig. 3.

Description of reference numerals:

100-lamp, 1-frame, 11-first mounting surface, 12-second mounting surface, 13-third mounting surface, 14-shell radiating surface, 2-lamp strip, 3-light-emitting diffuser plate, 31-triangular prism structure, 32-emergent surface, 4-back plate, 5-cavity, 6-lamp bead, 7-lens, 71-first refraction surface, 72-second refraction surface, 73-third refraction surface, 74-first reflection surface, 75-second reflection surface, 76-light-gathering surface, 77-first light-emitting surface, 78-second light-emitting surface, 791-first connecting column, 792-second connecting column, 8-intermediate reflector, 81-mounting connecting surface, 82-reflector reflecting surface, 91, 92, 93, 94. 95-light.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "connected" may be a fixed connection or a removable connection, or may be integral therewith; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

In a first embodiment, please refer to fig. 1 to 4, the utility model provides a light-emitting lamp 100 without light guide plate side, including frame 1, lamp strip 2, light-emitting diffuser plate 3, backplate 4 are installed in the front and the back of frame 1 respectively relatively, form cavity 5 between light-emitting diffuser plate 3 and the backplate 4, frame 1 is interior in frame 1 side-mounting lamp strip 2, be provided with a plurality of lamp pearls 6 on lamp strip 2 and send light to cavity 5 from the side of frame 1. The frame body 1 is used for installing the light bar 2, the light emitting and diffusing plate 3 and the back plate 4. The lamp strip 2 is installed in 1 side of framework, and the light that lamp pearl 6 on the lamp strip 2 sent becomes the luminous mode of side, and 4 internal surfaces of backplate can be used to the partial light of diffuse reflection, and light-emitting diffuser plate 3 is used for final outgoing light. The lamp beads 6 are LED lamp beads.

The utility model discloses a still be provided with lens 7 and middle reflection piece 8 in the framework 1, lens 7 is located between lamp strip 2 and middle reflection piece 8, the light that 7 conduction lamp pearls of lens 6 sent, middle reflection piece 8 reflects the light that 7 afferent lenses into to light-emitting diffuser plate 3.

The utility model discloses a framework 1 can design into different shapes according to the lamps and lanterns of difference like rectangle, circular etc. and also design into corresponding shape correspondingly lamp strip 2, light-emitting diffuser plate 3, backplate 4, lens 7 and middle reflection piece 8, as shown in fig. 1, when framework 1 designs into the rectangle, light-emitting diffuser plate 3, backplate 4 all design into the rectangular plate, and lamp strip 2, lens 7 and middle reflection piece 8 also design into the long strip.

As shown in fig. 3, in this embodiment, the light emitted by the lamp bead 6 can be divided into 3 parts after being refracted by the lens 7:

1. after the first part of light is emitted from the lens 7, the angle is slightly shifted upwards, as shown by the light 91, the part of light will strike the inner surface of the back plate 4, the inner surface of the back plate 4 has a diffuse reflection function, and the light striking the surface of the back plate can be diffusely reflected to the inner surface of the light-emitting diffusion plate 3 and then emitted through the outer surface of the light-emitting diffusion plate 3.

2. After the second part of light is emitted from the lens 7, the second part of light is close to the horizontal direction, as shown by the

light rays

92 and 93, the part of light can be transmitted to the intermediate reflector 8, and in the actual production process, the intermediate reflector 8 can reflect the light irradiated thereon to the preset position of the inner surface of the light-emitting diffusion plate 3 according to the actual requirement of uniform overall light emission of the lamp 100. Because this part light that is on a parallel with light-emitting diffuser plate 3 in the luminous lamps and lanterns cavity of offside does not handle among the prior art, so this part light can not controlled ground get into light-emitting diffuser plate 3 smoothly, but carries out the loss or enters light-emitting diffuser plate 3 disorderly in the lamps and lanterns cavity, and makes light-emitting diffuser plate 3's light-emitting illuminance inhomogeneous, and the utility model discloses an intermediate reflection piece 8 combines lens 7 can reflect this part light to light-emitting diffuser plate 3 controlledly, has compensated the illuminance from the light source farther department to improve the homogeneity of whole lamps and lanterns, utilized this part light effectively because of intermediate reflection plate 8 simultaneously, so also improved the light-emitting rate of lamps and lanterns simultaneously.

Because the promotion of illuminance homogeneity, then the utility model discloses a lamps and lanterns 100 no longer receive the restriction of size, can be applied to the lamps and lanterns of jumbo size lamps and lanterns on the market like 595 x 595 mm's dull and stereotyped lamp or other sizes.

3. After the third portion of the light exits the lens 7, it is slightly angled downward, as shown by the

light rays

94 and 95, and this portion of the light directly strikes the inner surface of the light-exiting diffuser plate 3 and exits through the outer surface of the light-exiting diffuser plate 3.

Preferably, the lens 7 of the present invention is a PMMA or PC material structure. Therefore, the phenomenon that the light guide plate is made of PS materials and is easy to cause yellowing and aging in the prior art can be avoided, and the service life of the product is prolonged.

In this embodiment, the lens 7 may be fixed on the light bar 2 or on the frame 1 or the back plate 4, and the intermediate reflector 8 may be fixed on the frame 1 or the back plate 4.

Preferably, the installation distance of the intermediate reflector 8 and the lens 7 in the frame 1 is adjustable. Therefore, the lamp can adapt to lamps with different sizes and different illumination requirements.

The utility model has the advantages that:

1. the uniformity of the illumination on the whole lamp surface of the lamp can reach more than 80%, and the light-emitting rate can reach more than 85%;

2. the size of the lamp is not strictly limited, the lamp can be directly used for 595 × 595 flat lamps, and the scheme can be used for lamps of other specifications and various sizes according to actual requirements;

3. the scheme can adopt various LED packaging sizes and has strong universality;

4. after the scheme is adopted, compared with the existing scheme of adopting the light guide plate, the use amount and cost of product materials and the assembly production cost can be greatly reduced, meanwhile, the hidden danger and the defect of yellowing, thermal deformation and the like do not exist, the service life is prolonged, and social resources are greatly saved.

As shown in fig. 4, as an embodiment, the cross section of the frame body 1 of the present invention includes a first mounting surface 11 disposed on the end surface, a second mounting surface 12 disposed on the other end, a third mounting surface 13 disposed inside and connected to the first mounting surface 11 and the second mounting surface 12, and a housing heat dissipation surface 14 formed with a gap between the third mounting surface 13, wherein the first mounting surface 11 is used for mounting the back plate 4, the second mounting surface 12 is used for mounting the light diffusion plate 3, the third mounting surface 13 is used for mounting the light bar 4, and the housing heat dissipation surface 14 is used for dissipating heat. The frame body 1 adopts an aluminum frame structure, so that the weight can be reduced.

Further, as shown in fig. 5, the inner surface of the light-emitting diffusion plate 3 is arranged with triangular prism structures 31 to increase the included angle between the emitted light and the emitting surface 32 of the light-emitting diffusion plate 3. Triangular prism structure 31 jets out from emitting surface 32 after refracting with middle reflection piece 8's reflection light, an exit angle for adjusting light, specifically be increase outgoing light and 3 emitting surface 32's of light-emitting diffuser plate contained angle, thus, can be with the light of penetrating into in middle reflection piece 8 and the light of direct penetrating into from lens 7, convert the decurrent light of angle in light-emitting diffuser plate 3 and jet out, especially to the level or be close the light that the level penetrated into, convert in light-emitting diffuser plate 3 and jet out for 3 emitting surface 32 of nearly perpendicular to light-emitting diffuser plate, the light-emitting rate of lamps and lanterns can be improved greatly like this.

When the light emitting diffusion plate 3 is manufactured, the emitting surface 32 can be a common frosted surface, or can be made into a micro-semicircle or other micro-structure shape according to the actual light emitting angle requirement, and a proper light diffusing agent can be added, so that the light emitting uniformity of the lamp is further improved.

Specifically, as shown in fig. 6, the utility model discloses an intermediate reflection piece 8 is connected face 81 and reflection piece plane of reflection 82 including the installation, and the installation is connected face 81 and is connected with backplate 4, and reflection piece plane of reflection 82 reflects the light that lens 7 penetrated to light-emitting diffuser plate 3. The utility model discloses mainly be with the light reflection to the light-emitting diffuser plate 3 of the nearly parallel direction that lens 7 penetrated, carry out remote conduction because of this part light, if do not reflect this part light, then the parallel light that the lamp pearl sent can the illuminance step-down behind remote transmission.

The embodiment of the utility model provides a reflector plane 82 is the oblique curved surface of flare from 4 one ends of backplate to light-emitting diffuser plate 3 one end. The reflecting surface 82 of the reflector is obliquely designed to enable the light rays emitted from the lens 7 to be emitted downwards into the light-emitting diffusion plate 3. The curved surface design can inject the light emitted from the lens 7 into the light-emitting diffusion plate 3 according to a predetermined position, thereby adjusting the uniformity.

As an implementation mode, as shown in fig. 1 and fig. 6, the light bar 2 of the present invention includes two opposite sidewalls respectively disposed on the frame body 1, correspondingly, the lens 7 includes two light bars 2 respectively adjacent to two sides of the frame body 1, and the middle reflector 8 includes two reflector reflection surfaces 82 for respectively transmitting the light of the two lens 7. Thus, the utility model discloses a lamp is luminous for both sides, increases luminance. It can be understood that, in other embodiments of the present invention, the light bars can be installed on four sides of the frame 1 to emit light on four sides, or when the frame 1 is annular, the light bars 2 are installed around the side wall in the frame 1 to form annular light emission, or when the frame 1 is rectangular, such as 295 × 595, 295 × 1195, etc., it can emit light on one side.

Please continue to refer to fig. 1 and 7, the lens 7 of the present invention is in a long strip shape, and the cross section thereof includes a first refraction surface 71 disposed in front of the lamp bead 6, a second refraction surface 72 and a third refraction surface 73 disposed at two connection ends of the first refraction surface 71, a first reflection surface 74 and a second reflection surface 75 respectively connected to the second refraction surface 72 and the third refraction surface 73, a light-gathering surface 76 disposed at a light exit path of the first refraction surface 71, and a first light-emitting surface 77 and a second light-emitting surface 78 disposed at two ends of the light-gathering surface 76 and respectively connected to the first reflection surface 74 and the second reflection surface 75.

Referring to fig. 8, after passing through the first refracting surface 71, the light emitted from the lamp bead 6 is totally refracted onto the light-collecting surface 76, and then refracted again, and then irradiated out at a desired angle in the horizontal direction, such as light 93, after passing through the second refracting surface 72, the light is totally refracted onto the first reflecting surface 74, and after passing through the third refracting surface 73, the light is totally refracted onto the second reflecting surface 75, and then totally reflected, and then irradiated out at a desired angle in the horizontal direction, such as

light

91 and 95.

Preferably, in order to save lens material and facilitate lens manufacturing, the first light emitting surface 77 and the second light emitting surface 78 can be split into a plurality of step surfaces, because the light is emitted substantially horizontally, and the two surfaces are designed as a vertical plane or a vertical step surface, which does not affect the overall effect.

Preferably, the light-gathering surface 76 is a convex lens surface protruding into the cavity 5 away from the light bar 2. Most of light energy level that can be with lamp pearl 6 like this can be collected then through middle reflector 8 transmission to light-emitting diffuser plate 3, reduces middle conduction number of times.

Preferably, a first connecting post 791 and a second connecting post 792 are arranged between the second refraction surface 72 and the first reflection surface 74 and between the third refraction surface 73 and the second emission surface 75 to be connected with the light bar 2. The design of first spliced pole 791 and second spliced pole 792 is convenient for the fixed connection of lens 7 and lamp strip 2.

First spliced pole 791, second refracting surface 72, first refracting surface 71, third refracting surface 73 and second spliced pole 792 cover in the place ahead of lamp pearl 6 for the light that lamp pearl 6 sent is whole to be conducted through lens 7.

The utility model discloses a lens 7 and lamp strip 2 assembly structure that can become an organic whole. The integrated assembly structure can pre-manufacture the lens 7 and the lamp strip 2 into a module, so that the whole lamp assembly process is simple and easy, and automatic assembly and super-large-scale production are convenient to carry out.

To sum up, the utility model discloses a luminous lamps and lanterns of no light guide plate side:

1. the light guide plate is eliminated, the lens is used instead, the PMMA or PC material which is the same as the light guide plate is adopted for the lens, the volume is only about 10 percent of the light guide plate, and resources and cost are greatly saved.

2. The lens has no hidden danger and defects of yellowing, thermal deformation and the like, can ensure that the lamp can be used for a longer time, and simultaneously solves the problems of high cost of the PMMA light guide plate, short service life of the PS light guide plate and the like in the scheme of the light guide plate.

3. The lens and the lamp strip can be made into a module in advance, the project assembly process is simple, and automatic assembly and super-large-scale production are facilitated.

4. Due to the use of the middle reflecting piece, one set of lens can adapt to the requirement of illumination uniformity by matching with different middle reflecting pieces, the design and use of lamps with different sizes are quickly realized, and the size limitation is broken through.

5. The lamp can be used on rectangular, circular or other lamps, such as a ceiling lamp, an ultrathin circular down lamp and the like, and has a wider market prospect.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims

1. A light-emitting lamp without a light guide plate side comprises a frame body, a light bar, a light-emitting diffusion plate and a back plate, wherein the light-emitting diffusion plate and the back plate are respectively and oppositely arranged on the front surface and the back surface of the frame body, a cavity is formed between the light-emitting diffusion plate and the back plate, the light bar is arranged on the side surface of the frame body in the frame body, a plurality of light beads are arranged on the light bar, the light beads emit light from the side surface of the frame body,

still be provided with lens and middle reflection part in the frame, lens are located between lamp strip and the middle reflection part, the light that lens conduction lamp pearl sent, middle reflection part reflects the light that lens afferent to light-emitting diffuser plate.

2. The light-emitting lamp on the side without the light guide plate of claim 1, wherein the light-emitting diffuser plate has a triangular prism structure arranged on the inner surface thereof to increase the included angle between the emitted light and the emitting surface of the light-emitting diffuser plate.

3. The light fixture on the side of a light guide plate of claim 1, wherein the intermediate reflector comprises a mounting connection surface and a reflector reflection surface, the mounting connection surface is connected with the back plate, and the reflector reflection surface reflects the light emitted from the lens to the light emitting diffuser plate;

4. The light fixture on the side of a light guide plate without the light guide plate of claim 1, wherein the installation distance of the intermediate reflector and the lens in the frame body is adjustable.

5. The light fixture on the side of a light guide plate of claim 1, wherein the lens is elongated and has a cross section including a first refractive surface disposed in front of the lamp bead, a second refractive surface and a third refractive surface respectively disposed at two connecting ends of the first refractive surface, a first reflective surface and a second reflective surface respectively connected to the second refractive surface and the third refractive surface, a light-collecting surface disposed on a light exit path of the first refractive surface, and a first light-emitting surface and a second light-emitting surface respectively connected to the first reflective surface and the second reflective surface and disposed at two ends of the light-collecting surface.

6. The light fixture on the side without the light guide plate as claimed in claim 5, wherein the light-gathering surface is a convex lens surface protruding into the cavity away from the light bar.

7. The light fixture with no light guide plate side as claimed in claim 5, wherein a first connection column and a second connection column are disposed between the second refraction surface and the first reflection surface, and between the third refraction surface and the second emission surface to connect with the light bar;

8. The light fixture on the side of a light guide plate of claim 1, wherein the lens is integrated with the light bar in an assembled configuration.

9. The light fixture on the side of a light guide plate of claim 1, wherein the light bar comprises two opposite sidewalls respectively disposed on the frame, the lens comprises two light bars respectively disposed adjacent to two sides of the frame, and the middle reflector comprises two reflector reflection surfaces respectively transmitting light of the two lenses.

10. The light fixture on the side of a light guide plate without the light guide plate of claim 1, wherein the lens is of a PMMA or PC material structure.