CN110594653A - Optical cover and down lamp applying same - Google Patents
Optical cover and down lamp applying same Download PDFInfo
- Publication number
- CN110594653A CN110594653A CN201910969903.3A CN201910969903A CN110594653A CN 110594653 A CN110594653 A CN 110594653A CN 201910969903 A CN201910969903 A CN 201910969903A CN 110594653 A CN110594653 A CN 110594653A
- Authority
- CN
- China
- Prior art keywords
- light
- optical cover
- light guide
- shell
- incident
- 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.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 60
- 239000011324 bead Substances 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000009792 diffusion process Methods 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V15/00—Protecting lighting devices from damage
- F21V15/01—Housings, e.g. material or assembling of housing parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
- F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
- F21V17/164—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting the parts being subjected to bending, e.g. snap joints
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Abstract
The invention relates to an optical cover and a down lamp using the same, wherein the down lamp comprises a shell, an LED luminous body and a cover body, the optical cover is made of a light-transmitting and light-guiding material, the optical cover is composed of an incident part, a light-guiding part and a deflection part which are sequentially connected, one end of the incident part, which is far away from the end connected with the light-guiding part, is provided with a top end surface, and the top end surface is inwards concave to form a cavity for accommodating a light source; the light guide part is trumpet-shaped, and the small end of the light guide part is connected with the incident part; the deflection part is arranged around the periphery of the large end of the light guide part to form a light-emitting surface, and the LED luminous body falls into the cavity of the optical cover; the light-emitting surface of the deflection part is exposed outside the shell. The invention has the advantages that when the LED lamp is used, the whole optical cover can emit light when the LED luminous body even emits light to the high-brightness LED lamp beads, most of light rays are refracted out of the light emitting surface, and a better lighting effect can be created.
Description
Technical Field
The invention relates to an optical cover and a down lamp using the same.
Background
At present, the high-brightness LED lamp bead is widely used for developing illuminating lamps due to small volume, high brightness and low power consumption. However, because the high-brightness LED lamp bead is small in volume, and its light divergence angle, light curve and spatial light distribution characteristics are different from those of a common lighting lamp, if it is applied to an existing lamp, its own advantages cannot be exerted, and even its advantages become disadvantages, so how to utilize the advantages of the high-brightness LED lamp bead to achieve a better lighting effect is a goal for people to seek.
Disclosure of Invention
A first object of the invention is to provide an optical cover that can be combined with an LED light source to produce a better lighting effect.
In order to achieve the purpose, the invention adopts the following technical scheme:
an optical cover is made of a light-transmitting and light-guiding material and comprises an incident part, a light-guiding part and a deflection part which are sequentially connected, wherein the end, far away from the end connected with the light-guiding part, of the incident part is provided with a top end surface, and the top end surface is inwards concave to form a cavity for containing a light source; the light guide part is trumpet-shaped, and the small end of the light guide part is connected with the incident part; the deflection part is arranged around the periphery of the large end of the light guide part to form a light-emitting surface.
The invention has the advantages that when in use, the adopted LED luminous body, even the high-brightness LED lamp bead, falls into the cavity of the incident part, the luminous line of the LED luminous body, even the high-brightness LED lamp bead, completely enters the incident part, reaches the deflection part after passing through the light guide part, is deflected and is emitted from the light emitting surface, and because the optical cover is made of the light-transmitting and light-guiding material, most of the light is transmitted to the deflection part in the light guide part, but part of the light is refracted outwards in the light guide part, when the LED luminous body, even the high-brightness LED lamp bead, emits light, and most of the light is refracted out of the light emitting surface, thereby achieving better lighting effect.
The invention can be improved by the following scheme:
the light guide part is a rotary cambered surface shell formed by rotating an arc around the central axis of the optical cover. Thus, the light rays are reflected on the inner and outer surfaces of the light guide portion a plurality of times, and pass through the light guide portion more favorably without losing excessive light rays.
The incident part is in a circular truncated cone shape, and the surface of the smaller end of the incident part is the top end surface; the peripheral surface of the incidence part is formed by rotating an arc around the central axis of the optical cover and is in smooth transition connection with the peripheral surface of the light guide part, so that the loss of light caused by outward refraction of the light due to abrupt change of curvature is avoided, and the light can better enter the light guide part through the incidence part.
The cavity is in a circular truncated cone shape, and the small end of the cavity is the bottom of the cavity, so that light can better enter the light guide part through the incident part.
The bottom surface of the chamber is a rotary arc surface formed by rotating an arc around the central axis of the optical cover. The LED light source and even the high-brightness LED lamp bead are very dazzling and can cause damage to eyes of people, when the bottom surface of the cavity is a rotating arc surface, light cannot be completely emitted outwards from the middle of the optical cover, and the light emitted outwards from the middle of the optical cover is softer by reflecting and refracting for multiple times on the rotating arc surface.
The end face of one end of the incidence part connected with the light guide part is provided with a groove, so that light rays emitted outwards from the middle of the optical cover become softer.
The deflection part is cylindrical or trumpet-shaped, one end of the deflection part is connected with the light guide part, the other end of the deflection part extends to one side close to the incident part, and the peripheral surface of the deflection part forms the light emitting surface.
The outer side of the light guide part is provided with a plurality of buckles, and the centers of the buckles are distributed at equal intervals along the central axis of the optical cover.
The inner side and the outer side of the optical cover are provided with frosted or diffusion layers to meet the requirement of light distribution.
A second object of the present invention is to provide a downlight which can be combined with a light source to produce a better lighting effect.
A down lamp comprises a shell, an LED luminous body and a cover body, wherein the shell is a cup-shaped body, the LED luminous body is arranged on the inner bottom surface of the shell, the cover body covers an opening of the shell, the cover body is an optical cover, and the LED luminous body falls into a cavity of the optical cover; the light-emitting surface of the deflection part is exposed outside the shell.
The invention has the advantages that when in use, the adopted LED luminous body, even the high-brightness LED lamp bead, falls in the cavity of the incident part, the luminous line of the LED luminous body, even the high-brightness LED lamp bead, completely enters the incident part, reaches the deflection part after passing through the light guide part, is deflected and is emitted from the light emitting surface, and because the optical cover is made of the light-transmitting and light-guiding material, most of the light is transmitted to the deflection part in the light guide part, but part of the light is refracted outwards in the light guide part, when the LED luminous body, even the high-brightness LED lamp bead, emits light, and most of the light is refracted out of the light emitting surface, thereby achieving better lighting effect.
The invention can be improved by the following scheme:
the LED luminous body adopts a high-brightness LED lamp bead.
The outer side surface of the light guide part is provided with a plurality of hooks, the centers of the hooks are distributed at equal intervals according to the central axis of the optical cover, the inner wall surface of the shell is provided with buckles in butt joint connection with the hooks, and the buckles are correspondingly buckled on the hooks.
The inner side and the outer side of the optical cover are provided with frosted or diffusion layers.
Drawings
Fig. 1 is a schematic diagram of an overall three-dimensional state structure of the downlight in the embodiment.
Fig. 2 is a structural schematic diagram of the down lamp in an overall exploded state in the embodiment.
Fig. 3 is a front sectional view of the downlight in the embodiment.
Fig. 4 is a structural diagram of the whole three-dimensional state of the optical cover in the embodiment.
Fig. 5 is a schematic view of the overall three-dimensional state structure of the optical cover in the embodiment from another view angle.
Fig. 6 is a front sectional view of the optical cover in the embodiment.
Detailed Description
As shown in fig. 1 to 3, a tube lamp includes a housing 1, an LED light emitter 2, and an optical cover 3 (i.e., a cover), an aluminum sheet 5 for heat dissipation may be further disposed in the housing 1, and the aluminum sheet 5 may be placed in a molding die during injection molding of the housing 1 and formed integrally with the housing 1.
The shell 1 is a cup-shaped body, the LED luminous body 2 is arranged on the inner bottom surface of the shell 1, and the optical cover 3 (namely a cover body) covers the opening of the shell 1. The LED luminous body 2 adopts a high-brightness LED lamp bead. More specifically, the high brightness LED lamp bead may be a single bead of commercially available sumidel 5050(36V, 6W) that is integrated on a circuit board that is mounted on the housing 1 in a conventional manner.
As shown in fig. 4 to fig. 6, the optical cover 3 is made of a light-transmitting and light-guiding material, such as glass or acrylic. The optical cover 3 is composed of an incident part 31, a light guide part 32 and a deflection part 33 which are connected in sequence, wherein one end of the incident part 31, which is far away from the end connected with the light guide part 32, is provided with a top end surface 41, and a cavity 42 for accommodating a light source is formed in the top end surface 41; the light guide part 32 is trumpet-shaped, and the small end of the trumpet-shaped light guide part is connected with the incident part 31; the deflecting portion 33 is disposed around the periphery of the large end of the light guide portion 32 to form a light exit surface 331.
After the down lamp is assembled, the LED luminous body 2 falls into the cavity 42 of the optical cover 3; the light emitting surface 331 of the deflecting portion 33 is exposed outside the housing 1. Therefore, the adopted LED luminary 2 or even the high-brightness LED lamp bead falls in the cavity 42 of the incident portion 31, the light emitted by the LED luminary 2 or even the high-brightness LED lamp bead completely enters the incident portion 31 and passes through the light guide portion 32 to reach the deflecting portion 33 to be deflected and then to be emitted from the light emitting surface 331, because the optical cover 3 is made of a light-transmitting and light-guiding material, most of the light is transmitted to the deflecting portion 33 at the light guide portion 32, but part of the light is refracted outwards at the light guide portion 32, when the LED luminary 2 or even the high-brightness LED lamp bead emits light, the whole optical cover 3 emits light, and most of the light is refracted at the light emitting surface 331, so as to create a better illumination effect, and the dotted line in fig. 3 is a rough propagation path of the light.
More specifically, the light guide part 32 is a rotating arc-shaped housing formed by rotating an arc around the central axis of the optical housing 3. This allows the light to be reflected between the inside and outside of the light guide unit 32 a plurality of times, and to pass through the light guide unit 32 without losing an excessive amount of light.
The incident portion 31 may be in a circular truncated cone shape, and a surface of a smaller end thereof is the tip end surface 41; the outer peripheral surface of the incident portion 31 is formed by rotating an arc around the central axis of the optical cover 3 and is smoothly transitionally connected with the outer peripheral surface of the light guide portion 32, so that the light is not refracted outwards to cause the loss of the light due to the abrupt change of curvature, and the light can better enter the light guide portion 32 through the incident portion 31.
In addition, the cavity 42 is in a circular truncated cone shape, and the small end of the cavity 42 is the bottom of the cavity, so that light can better enter the light guide part 32 through the incident part 31. The bottom surface of the chamber 42 is a rotating arc 421 formed by rotating an arc around the central axis of the optical cover 3. The LED light source and even the high-brightness LED lamp bead are very dazzling and can cause damage to eyes of people, when the bottom surface of the cavity 42 is the rotating arc surface 421, light cannot be completely emitted outwards from the middle of the optical cover 3, and the light emitted outwards from the middle of the optical cover 3 is softer due to multiple reflection and refraction on the rotating arc surface 421.
Similarly, a groove 43 is formed on an end surface of the end of the incident portion 31 connected to the light guide portion 32, so that light emitted from the center of the optical cover 3 to the outside becomes softer.
The specific shape and structure of the offset portion 33 may be a cylinder or a trumpet, one end of the offset portion 33 is connected to the light guide portion 32, and the other end extends to a side close to the incident portion 31, and the light emitting surface 331 is formed on the outer peripheral surface of the offset portion 33.
The outer side of the light guide part 32 is provided with a plurality of hooks 44, the centers of the hooks 44 are distributed at equal intervals along the central axis of the optical cover 3, the inner wall of the housing 1 is formed with buckles connected with the hooks 44 in a butt joint manner, and the buckles are correspondingly buckled on the hooks 44.
The inner side and the outer side of the optical cover 3 are frosted or provided with a diffusion layer to meet the requirement of light distribution.
The above embodiments are only preferred embodiments of the present invention, but the present invention is not limited thereto, and any other changes, modifications, substitutions, combinations, simplifications, and equivalents which do not depart from the spirit and principle of the present invention are all included in the scope of the present invention.
Claims (10)
1. An optical cover is made of a light-transmitting and light-guiding material and is characterized by comprising an incident part, a light-guiding part and a deflection part which are sequentially connected, wherein one end of the incident part, which is far away from the end connected with the light-guiding part, is provided with a top end surface, and the top end surface is inwards concave to form a cavity for accommodating a light source; the light guide part is trumpet-shaped, and the small end of the light guide part is connected with the incident part; the deflection part is arranged around the periphery of the large end of the light guide part to form a light-emitting surface.
2. An optical cover according to claim 1, wherein the light guide portion is a rotational arc shell formed by rotating an arc about a central axis of the optical cover.
3. An optical cover according to claim 2, wherein the incident portion is in the shape of a truncated cone, and the surface of the smaller end thereof is the tip end surface; the peripheral surface of the incident part is formed by rotating an arc around the central axis of the optical cover and is in smooth transition connection with the peripheral surface of the light guide part.
4. An optical cover according to claim 1, wherein the chamber is truncated and the small end is the bottom of the chamber.
5. An optical cover according to claim 1, wherein the bottom surface of the chamber is a curved surface of revolution formed by rotation of the arc about a central axis of the optical cover.
6. An optical cover according to claim 1, wherein a groove is formed on an end surface of an end of the incident portion connected to the light guide portion.
7. An optical cover according to any one of claims 1 to 6, wherein the deflecting portion has a cylindrical shape or a trumpet shape, one end of the deflecting portion is connected to the light guide portion, and the other end extends toward a side close to the incident portion, and an outer peripheral surface of the deflecting portion forms the light emitting surface.
8. An optical cover according to claim 7, wherein the outer side of the light guide portion is provided with a plurality of hooks, and the centers of the hooks are equally spaced from the central axis of the optical cover; the inner side and the outer side of the optical cover are provided with frosted or diffusion layers.
9. A down lamp, comprising a shell, an LED luminous body and a cover body, wherein the shell is a cup-shaped body, the LED luminous body is arranged on the inner bottom surface of the shell, and the cover body covers an opening of the shell, and is characterized in that the cover body is an optical cover as claimed in any one of claims 1 to 7, and the LED luminous body falls into a cavity of the optical cover; the light-emitting surface of the deflection part is exposed outside the shell.
10. An optical cover according to claim 9, wherein the LED luminary is a high brightness LED lamp bead; the outer side surface of the light guide part is provided with a plurality of hooks, the centers of the hooks are distributed at equal intervals according to the central axis of the optical cover, the inner wall surface of the shell is provided with buckles in butt joint connection with the hooks, and the buckles are correspondingly buckled on the hooks; the inner side and the outer side of the optical cover are provided with frosted or diffusion layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910969903.3A CN110594653A (en) | 2019-10-12 | 2019-10-12 | Optical cover and down lamp applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910969903.3A CN110594653A (en) | 2019-10-12 | 2019-10-12 | Optical cover and down lamp applying same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110594653A true CN110594653A (en) | 2019-12-20 |
Family
ID=68866807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910969903.3A Pending CN110594653A (en) | 2019-10-12 | 2019-10-12 | Optical cover and down lamp applying same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110594653A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040141323A1 (en) * | 2002-10-28 | 2004-07-22 | Jean-Pierre Aynie | Indicator lamp comprising an optical device for recovering and distributing the light flux towards an annular reflector |
| CN202927620U (en) * | 2011-12-23 | 2013-05-08 | 深圳市亮百佳电子科技有限公司 | Light emitting diode projection lighting lamp capable of removing glare |
| CN206072804U (en) * | 2016-09-28 | 2017-04-05 | 漳州立达信光电子科技有限公司 | Light fixture and its optical enclosure |
| CN207471323U (en) * | 2017-10-24 | 2018-06-08 | 漳州立达信光电子科技有限公司 | Light-guiding shade and downlight |
| CN108224243A (en) * | 2018-01-23 | 2018-06-29 | 福州丹诺西诚电子科技有限公司 | A kind of downlight |
| CN207661580U (en) * | 2017-11-16 | 2018-07-27 | 漳州立达信光电子科技有限公司 | Downlight |
| CN210424721U (en) * | 2019-10-12 | 2020-04-28 | 广东思雅特科技有限公司 | Optical cover and down lamp applying same |
-
2019
- 2019-10-12 CN CN201910969903.3A patent/CN110594653A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040141323A1 (en) * | 2002-10-28 | 2004-07-22 | Jean-Pierre Aynie | Indicator lamp comprising an optical device for recovering and distributing the light flux towards an annular reflector |
| CN202927620U (en) * | 2011-12-23 | 2013-05-08 | 深圳市亮百佳电子科技有限公司 | Light emitting diode projection lighting lamp capable of removing glare |
| CN206072804U (en) * | 2016-09-28 | 2017-04-05 | 漳州立达信光电子科技有限公司 | Light fixture and its optical enclosure |
| CN207471323U (en) * | 2017-10-24 | 2018-06-08 | 漳州立达信光电子科技有限公司 | Light-guiding shade and downlight |
| CN207661580U (en) * | 2017-11-16 | 2018-07-27 | 漳州立达信光电子科技有限公司 | Downlight |
| CN108224243A (en) * | 2018-01-23 | 2018-06-29 | 福州丹诺西诚电子科技有限公司 | A kind of downlight |
| CN210424721U (en) * | 2019-10-12 | 2020-04-28 | 广东思雅特科技有限公司 | Optical cover and down lamp applying same |
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