CN220489006U - Uniform luminous down lamp - Google Patents
Uniform luminous down lamp Download PDFInfo
- Publication number
- CN220489006U CN220489006U CN202320941432.7U CN202320941432U CN220489006U CN 220489006 U CN220489006 U CN 220489006U CN 202320941432 U CN202320941432 U CN 202320941432U CN 220489006 U CN220489006 U CN 220489006U
- Authority
- CN
- China
- Prior art keywords
- light
- uniformly
- guide plate
- light guide
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000009792 diffusion process Methods 0.000 claims abstract description 49
- 238000005286 illumination Methods 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Landscapes
- Planar Illumination Modules (AREA)
Abstract
The utility model discloses a uniform light-emitting down lamp which is used in the field of lamplight illumination and comprises a diffusion plate and a back plate which is clamped and fixed with the diffusion plate; a light guide plate is arranged between the back plate and the diffusion plate; the back plate gap is provided with illumination light sources which are annularly and uniformly distributed; a cavity for uniformly distributing light is arranged between the light guide plate and the diffusion plate. The annular light source provides uniformly distributed luminous points, so that generated light is uniformly dispersed, and the emitted light is uniformly distributed through reflection of the reflective paper and refraction of the light guide plate; meanwhile, the whole surface of the outer round surface of the diffusion plate can emit light with the same brightness by virtue of the gap between the light guide plate and the diffusion plate, so that the problems of light loss and uneven light distribution caused by blocking of the inner support structure are avoided, and the diffusion plate is realized to realize uniform light emission on the whole surface.
Description
Technical Field
The utility model relates to the field of lighting devices, in particular to a uniform-lighting down lamp.
Background
The publication date is 2018, 1-23, and the Chinese patent document with publication number CN206920639U discloses a light guide plate and a music down lamp with the light guide plate, wherein the light guide plate comprises a main body part, the main body part is provided with a first surface and a second surface opposite to the first surface, the first surface of the main body part is convexly provided with a convex part, the tail end surface of the convex part is concavely provided with an inner concave part, the inner wall of the inner concave part forms a first light inlet surface of the light guide plate, and light rays are reflected towards the second surface through the inner wall of the convex part after entering the first light inlet surface and are emitted through the second surface; the middle part of the main body part is provided with a through hole, the protruding part is arranged around the through hole, the inner wall of the through hole forms a second light incident surface of the light guide plate, and light rays enter the second light incident surface and then exit through the second surface; the light reflected to the first surface after part enters the main body part is reflected by the first surface and then exits towards the second surface, the light source is flexibly arranged through two paths of light setting, the light guiding direction is diversified, and the light emitting efficiency is high.
However, at the same time, it is unavoidable that the light transmitted to the second surface is unevenly distributed due to the existence of the supporting and fixing structure, so that the light intensity of the second surface is uneven, and uniform light emission across the entire surface cannot be realized.
Disclosure of Invention
The utility model aims to solve the problem that the light intensity distribution is affected due to the fact that a fixing support is needed by a down lamp in the prior art, so that the whole surface cannot uniformly emit light, and provides a uniform-lighting down lamp.
In order to solve the technical problems, the technical scheme adopted by the utility model is that the uniform luminous down lamp comprises a diffusion plate and a back plate which is clamped and fixed with the diffusion plate; a light guide plate is arranged between the back plate and the diffusion plate; the back plate is internally provided with illumination light sources which are annularly and uniformly distributed; and a cavity for uniformly distributing light is arranged between the light guide plate and the diffusion plate. The annular light source provides uniformly distributed luminous points, so that generated light is uniformly dispersed, and the emitted light is uniformly distributed through reflection of the reflective paper and refraction of the light guide plate; meanwhile, the whole surface of the outer round surface of the diffusion plate can emit light with the same brightness by virtue of the gap between the light guide plate and the diffusion plate, so that the problems of light loss and uneven light distribution caused by blocking of the inner support structure are avoided. Therefore, the utility model solves the problem of uneven light emission in the prior art, and ensures that the diffusion plate realizes uniform light emission on the whole surface.
Preferably, the cavity is formed by sealing the diffusion cover and the light guide plate, the height of the cavity is 5-15mm, and in the range, light rays can be uniformly distributed in the cavity in a sufficient space to realize uniform light emission on the top surface of the diffusion plate; the cavity thickness is lower than 5mm, so that light rays are emitted from the diffusion plate without uniform distribution, and the light rays are scattered efficiently due to the fact that the thickness is too large, and production cost is improved.
Preferably, the center of the light guide plate is provided with a through hole, and the diameter of the light guide plate is smaller than the inner diameter of the diffusion cover. Through using through-hole and joint fixed rather than the support to inside support in order to reduce inside to the blocking of light source, improve lighting efficiency.
Preferably, the through hole is a step hole, and one surface of the step hole, which is close to the diffusion plate, is a large-diameter section. The step holes can enable the fixing pieces to be embedded in the step holes, so that the flatness of the upper plane of the light guide plate is ensured, no bulge exists, and the influence of the bulge on the light scattering efficiency of the cavity is avoided; meanwhile, the transparent fixing piece is selected, so that the light passing rate can be improved, the light loss caused by the through holes is reduced to a greater extent, and the surface brightness of the diffusion plate is more uniform.
Preferably, the diffusion plate is a shell with a cavity inside, a plurality of clamping grooves are uniformly distributed on the inner wall of the diffusion plate, and the outer ring of the light guide plate is attached to the inner wall of the diffusion plate; a plurality of buckles matched with the clamping grooves on the inner wall of the diffusion plate are uniformly distributed on the outer side of the back plate. The buckle outside the back plate is pressed into the clamping groove to be clamped and fixed during installation, the back plate is fixed at the inner fixed position of the diffusion plate by means of the elasticity of the back plate, the installation is convenient, and the thickness of the cavity can not be changed so as to influence illumination.
Preferably, an annular protrusion is arranged in the back plate, and a gap is formed between the annular protrusion and the outer wall. The threaded holes are used for being fixed with screws arranged in the stepped holes of the light guide plate, so that the diffusion plate, the light guide plate and the back plate are located on the same central axis.
Preferably, the back plate is internally provided with reflective paper, and the middle part of the reflective paper is provided with a fixing hole; the light reflecting paper is positioned between the light guide plate and the backboard, one surface of the light reflecting paper is attached to the light guide plate, and the other surface of the light reflecting paper is attached to the annular plane at the top of the annular bulge of the backboard. The reflective paper is arranged at the bottom and reflects the light rays inwards and downwards from the annular lamp strip to the diffusion plate, so that the illumination brightness is improved.
Preferably, the light guide plate is connected to the back plate through a fixing member, and the fixing member penetrates through the stepped hole and the fixing hole. The use of smaller fixtures rather than a relatively large structure not only simplifies the structure and reduces the cost, but also reduces the amount of light lost in the internal reflection process and improves the light emergence rate.
Preferably, the illumination light source comprises a lamp strip and a lamp sheet; the diameter of the lamp strip is larger than that of the reflective paper and smaller than that of the backboard, and the lamp strip is clamped, attached and fixed on the inner wall of the backboard and positioned in the gap; the lamp sheets are uniformly arranged on the inner side of the lamp strip, and are connected to an external power supply through leads connected to the backboard. The annular lamp strip can provide a uniformly emitted light source, so that the light emitted to the diffusion plate is more uniformly distributed, and uniform light emission of the lamp is realized; the lamp sheets are connected in parallel, so that the whole lamp sheets cannot lose illumination capacity when being damaged, and the lamp sheets are convenient to replace and maintain, so that the maintenance cost is reduced.
The utility model has the beneficial effects that the problem that the light transmitted to the second surface is unevenly distributed due to the existence of the supporting and fixing structure, so that the light intensity of the second surface is uneven and the uniform light emission of the whole surface cannot be realized is avoided; the fixing piece and the fixing hole structure at the center of the light which is not easy to block replace an internal supporting structure capable of blocking light propagation, so that light transmittance is improved, surface light is uniformly distributed, uniform light emitting function is realized, illumination efficiency is improved, maintenance is simple, and maintenance cost is low.
Drawings
FIG. 1 is a schematic view of a three-dimensional exploded view of a uniformly light-emitting down lamp of the present utility model;
fig. 2 is a partial cross-sectional view of a uniformly light-emitting downlight of the present utility model.
In the figure: 1. the diffusion plate, 101. The draw-in groove;
2. backboard, 201, buckle, 202, fixing hole;
3. the light guide plate 301 is provided with a step hole 302;
4. an illumination light source 401, a lamp strip 402, a lamp sheet;
5. and (5) reflecting paper.
Detailed Description
The following describes a specific embodiment of the technical scheme of the utility model further by way of examples and with reference to the accompanying drawings.
Example 1
As shown in fig. 1 and 2, a uniform light-emitting down lamp comprises a diffusion plate 1 and a back plate 2 fastened and fixed to the diffusion plate 1, wherein the diffusion plate 1 is a cylindrical shell with an opening at the lower part, fastening structures fastened and fixed to the diffusion plate are respectively a clamping groove 101 positioned on the inner wall of the diffusion plate 1 and a corresponding clamping buckle 201 positioned on the outer ring of the back plate 2, and the clamping buckles 201 are arc-shaped strip-shaped protrusions and are uniformly distributed on the outer part of the back plate 2. In this embodiment, the number of the buckles 201 and the clamping grooves 101 is 4, and the backboard 2 is pressed into the installation position and then clamped and fixed during installation. There is no other fixing bracket inside except the fixing member 302 and the fixing hole 202, which avoids the problem that the bracket blocks light to cause uneven surface light distribution.
The bottom of the backboard 2 is provided with an annular bulge, and the top surface of the bulge is provided with reflective paper 5; the space between the annular bulge and the outer ring of the backboard 2 is provided with an illumination light source 4, the illumination light source 4 comprises a lamp strip 401 and lamp sheets 402, the lamp strips 401 are uniformly provided with the lamp sheets 402, and the lamp sheets are connected to an external power supply through leads; the lamp sheets 402 are connected in parallel and connected with the outside to obtain the power required by illumination, so that the illumination obstacle caused by independent damage is avoided.
A light guide plate 3 is arranged between the diffusion plate 1 and the back plate 2, and a cavity of 10mm is arranged between the light guide plate 3 and the diffusion plate 1 and is used for uniformly distributing light rays and providing uniform illumination; the light guide plate 3, the reflective paper 5 and the back plate 2 are provided with an equal-diameter through hole at the center, wherein the through hole at the center of the light guide plate 3 is a step hole 301, one side close to the diffusion plate 1 is a large-diameter section, the fixing piece 302 is fixed on the back plate 2 through the through hole during installation, the fixing piece 302 is a transparent screw in the embodiment, and the head can be completely immersed into the large-diameter section, so that the influence of the reduction of the gap distance between the light guide plate 3 and the diffusion plate 1 on scattering is avoided.
Claims (9)
1. A uniformly luminous down lamp is characterized in that:
comprises a diffusion cover (1) and a backboard (2) which is clamped and fixed with the diffusion cover (1);
a light guide plate (3) is arranged between the back plate (2) and the diffusion cover (1);
an illumination light source (4) is arranged in the back plate (2), and the illumination light sources (4) are annularly and uniformly distributed;
a cavity for uniformly distributing light is arranged between the light guide plate (3) and the diffusion cover (1).
2. The uniformly light-emitting downlight of claim 1, wherein:
the cavity is formed by sealing the diffusion cover (1) and the light guide plate (3), and the height of the cavity is 5-15mm.
3. The uniformly light-emitting downlight of claim 1, wherein:
the center of the light guide plate (3) is provided with a through hole, and the diameter of the light guide plate (3) is smaller than the inner diameter of the diffusion cover (1).
4. A uniformly light-emitting downlight as set forth in claim 3, wherein:
the through hole is a step hole (302), and one surface of the step hole (302) close to the diffusion cover (1) is a large-diameter section.
5. The uniformly light-emitting downlight of claim 1, wherein:
the diffusion cover (1) is a shell with a cavity inside, a plurality of clamping grooves (101) are uniformly distributed on the inner wall of the diffusion cover (1), and the outer ring of the light guide plate (3) is attached to the inner wall of the diffusion cover (1);
a plurality of buckles (201) matched with the clamping grooves (101) on the inner wall of the diffusion cover (1) are uniformly distributed on the outer side of the backboard (2).
6. The uniformly light-emitting downlight of claim 1, wherein:
the back plate (2) is internally provided with an annular bulge, and a gap is formed between the annular bulge and the inner wall.
7. The uniformly light-emitting downlight of claim 6, wherein:
the back plate (2) is internally provided with reflective paper (5), and a fixing hole (202) is formed in the middle of the reflective paper (5);
the reflective paper (5) is positioned between the light guide plate (3) and the backboard (2), one surface is attached to the light guide plate (3), and the other surface is attached to the annular plane at the top of the annular bulge of the backboard (2).
8. The uniformly light-emitting downlight of claim 7, wherein:
the light guide plate (3) is connected with the backboard (2) through a fixing piece (301), and the fixing piece (301) penetrates through the step hole (302) and the fixing hole (202).
9. The uniformly light-emitting downlight of claim 7, wherein:
the illumination light source (4) comprises a lamp strip (401) and a lamp sheet (402);
the diameter of the lamp strip (401) is larger than that of the reflective paper (5) and smaller than that of the backboard (2), and the lamp strip is clamped, attached and fixed on the inner wall of the backboard (2) and positioned in the gap;
the lamp sheets (402) are uniformly arranged on the inner side of the lamp strip (401), and the lamp sheets (402) are connected to an external power supply through leads connected to the backboard (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320941432.7U CN220489006U (en) | 2023-04-24 | 2023-04-24 | Uniform luminous down lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320941432.7U CN220489006U (en) | 2023-04-24 | 2023-04-24 | Uniform luminous down lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220489006U true CN220489006U (en) | 2024-02-13 |
Family
ID=89832892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320941432.7U Active CN220489006U (en) | 2023-04-24 | 2023-04-24 | Uniform luminous down lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220489006U (en) |
-
2023
- 2023-04-24 CN CN202320941432.7U patent/CN220489006U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2019071297A (en) | Lighting device | |
| EP2570717B1 (en) | Illumination Apparatus | |
| KR100982727B1 (en) | Led lighting appratus | |
| JP2012094320A (en) | Bulb type lighting device | |
| CN201636632U (en) | Two-surface light-guiding LED illuminating lamp | |
| TW201307753A (en) | Planar illumination light source apparatus using light emitter | |
| CN212961176U (en) | Cylinder lamp | |
| CN220489006U (en) | Uniform luminous down lamp | |
| WO2017113519A1 (en) | Modular led light mixing device and led lamp having same | |
| WO2018228224A1 (en) | Lamp | |
| CN108826110B (en) | Wall-mounted lamp | |
| CN109442265B (en) | Lighting lamp | |
| CN202349674U (en) | Flat plate type illuminator easy to disassemble and assemble | |
| KR20180000988A (en) | LED lighting device | |
| CN213089607U (en) | Ceiling lamp | |
| KR101713973B1 (en) | Diffuser for led illuminator | |
| WO2018196562A1 (en) | Lens and illuminating device using same | |
| CN221035418U (en) | Lamp set | |
| KR20120137077A (en) | Led illumination equipment | |
| CN103836438A (en) | Lamp | |
| CN211875722U (en) | LED light source with light guide plate | |
| CN219063225U (en) | Lighting lamp | |
| CN212747049U (en) | Light source assembly, display assembly, door body assembly and refrigerator | |
| CN217423050U (en) | Lamp fitting | |
| CN213983037U (en) | LED panel light |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |