CN108775554A - A kind of lens and lamp box - Google Patents
A kind of lens and lamp box Download PDFInfo
- Publication number
- CN108775554A CN108775554A CN201810681499.5A CN201810681499A CN108775554A CN 108775554 A CN108775554 A CN 108775554A CN 201810681499 A CN201810681499 A CN 201810681499A CN 108775554 A CN108775554 A CN 108775554A
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- lens
- light source
- light
- lamp box
- incidence
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Classifications
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- 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
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses a kind of lens and lamp boxes, lens include incidence surface, light-emitting surface, bottom surface and the host cavity for accommodating light source, vertical lens are axially symmetric structure in the section of bottom surface, the wall surface of host cavity is incidence surface, incidence surface is curved surface and is directed away from the direction bending of bottom surface, light-emitting surface includes centrally located first surface region and the second curved surface area in first surface area periphery is arranged, and first surface region is recessed towards bottom surface, and the second curved surface area is protruded towards the direction far from symmetry axis.Lens provided by the invention, by the height to incidence surface and width, lens thickness between proportionate relationship adjustment, and position to the peak of light-emitting surface adjustment so that the largest light intensity angle of the lens is more than 70 °.The lamp box that light distribution is carried out by the lens, under the premise of meeting brightness requirement and light-emitting uniformity requires, the number of the light source of required array is less under unit area, higher to save Material Cost, and improves packaging efficiency.
Description
Technical field
The invention belongs to lighting technical field, more particularly to a kind of lens and lamp box.
Background technology
Existing lamp box, is rectangle mostly comprising alongst multiple lamp bars of parallel arrangement and multiple lamps
Spacing between item is identical, and each lamp bar includes evenly arranged several luminescence units in lamp bar.It is general to use lens for hair
The one-to-one carry out light distribution of light unit, increases the range of exposures of luminescence unit with this.But the uniformity of existing lens is bad, needs
Lamp bar is arranged to obtain the more intensive requirement to meet lamp box for light-emitting uniformity, in this way, not only Material Cost is higher, together
When also increase built-up time.
Invention content
The purpose of the present invention is to solve the above problem, big angle can be realized by providing a kind of lens and lamp box, the lens
Spend range and uniform light extraction.
To achieve the above object, the present invention provides a kind of lens, are applied to lamp box,
The lens include incidence surface, the light-emitting surface opposite with the incidence surface and the bottom surface being connect with the incidence surface,
Host cavity for accommodating light source, the vertical lens in the bottom surface section and have symmetry axis, the wall of the host cavity
Face is the incidence surface,
The incidence surface be curved surface and be directed away from the bottom surface direction bending,
The light-emitting surface is curved surface, including centrally located first surface region and setting are outside the first surface region
The second curved surface area enclosed, the first surface region are recessed towards the bottom surface, and second curved surface area is towards far from described
The direction of symmetry axis is protruded, and the intersection point of the first surface region and second curved surface area on the section is intersection point b,
The intersection point b is the farthest point away from the bottom surface on the light-emitting surface,
The central point of the incidence surface is h1 relative to the distance of the bottom surface, and the incidence surface is with the bottom surface described
Intersection point on section is d1 at a distance from the symmetry axis, and the light-emitting surface and the incidence surface are in the extension side of the symmetry axis
Upward spacing is h2, is located at the same side of the symmetry axis, the light-emitting surface and the incidence surface are respectively away from the symmetry axis
Spacing of the two farthest points on bottom surface be d2, the intersection point b relative to the light-emitting surface central point in the axial direction between
Away from for h3,
Proportionate relationship between h1, h2, h3, d1 and d2 is h2*d1/h1*d2≤0.2,0.1<h3/h2<0.2.
Further, the incidence surface is any one in free form surface, ellipsoid, spherical surface, paraboloid.
Further, the lens are axis rotational symmetry structure, and the first surface region is bent by two different battens
Line is rotatably connected, and two spline curve are tangent.
Further, the lens are tension type structure, and the first surface region is drawn by two different spline curve
It stretches and is formed by connecting, two spline curve are tangent.
Further, at least two are provided on the bottom surface of the lens for the lens to be positioned at the light source
The positioning region of side.
Further, it is additionally provided with recessed portion on the bottom surface of the lens, from the edge of the recessed portion to the recess
At least two protrusions are protruded on the inside of portion.
Further, there are two the protrusion is oppositely arranged on the bottom surface, the positioning region is on the bottom surface
There are two being oppositely arranged, the protrusion and the positioning region are uniformly arranged in the periphery of the bottom surface.
To achieve the above object, the present invention also provides a kind of light source module group, including substrate, said lens and in the base
The light source of array arrangement on plate, the lens and the substrate connection and the lens are covered in the top of the light source.
Further, the lens are round or bar shaped, when the lens are round, the one-to-one covering of lens
In the top of the light source；The light source along a first direction and the second direction array arrangement vertical with the first direction,
When the lens are bar shaped, the lens are covered in the top of the light source along the first direction or the second direction.
Further, the substrate is bar shaped, and the light source is evenly distributed along the extending direction of the substrate.
To achieve the above object, the present invention also provides a kind of lamp box, the lamp box includes babinet, is fixed on the babinet
The translucent element of interior above-mentioned light source module group and driving power module, the covering light source module group.
Further, the light source module group is bar shaped module, and the translucent element is tabular, the adjacent light source die
Spacing between group is L, and the light source module group is H, H/L≤0.3 at a distance from the translucent element.
Further, the driving power module includes power pack and is contained in the driving power of the power pack, described
Power pack is connected in the substrate.
Further, the lamp box further includes the outline border of annular and by the circular vacancy section of the outline border, the outline border with
The babinet connection, the translucent element are connected to the outline border and the covering vacancy section.
Advantageous effect：Lens and lamp box provided by the invention, the lens are hyperboloid structure, and by incidence surface
Height and width, lens thickness between proportionate relationship adjustment, and position to the peak of light-emitting surface adjustment so that
The largest light intensity angle of the lens is more than 70 °.The lamp box that light distribution is carried out by the lens is meeting brightness requirement and light-emitting uniformity is wanted
Under the premise of asking, the number of the light source of required array is less under unit area, higher to save Material Cost, and improves
Packaging efficiency.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and constitutes the part of the present invention, this hair
Bright illustrative embodiments and their description are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the stereogram that a kind of light box part provided in an embodiment of the present invention is decomposed.
Fig. 2 is the sectional view of the line A-A along Fig. 1.
Fig. 3 is the stereoscopic schematic diagram of the lamp bar in Fig. 1.
Fig. 4 is the stereogram of the lens in Fig. 1.
Fig. 5 is the stereogram of another angle of the lens of Fig. 4.
Fig. 6 is the diagrammatic cross-section of the line B-B along Fig. 3.
Fig. 7 is the distribution curve flux corresponding to the combination of the light source and lens of Fig. 6.
Fig. 8 is a kind of brightness curve of the central axes parallel with line A-A of lamp box provided in an embodiment of the present invention.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and
Technical solution of the present invention is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under the premise of creative work, shall fall within the protection scope of the present invention.
Fig. 1 to Fig. 8 shows a kind of lamp box 100 of the present invention, including babinet 10, the light source module group that is fixed in babinet 10
20 and driving power module 30, cover light source module group 20 translucent element 40, wherein light source module group 20 include substrate 1, in substrate
The light source 2 of array arrangement on 1, the top for being connect with substrate 1 and being covered in light source 2 lens 3.The largest light intensity angle of lens 3 is big
In 70 °, there is higher light-emitting uniformity by the lamp box 100 of 3 light distribution of lens.
Have below for the connection relation work between each element and element in lamp box 100 provided in an embodiment of the present invention
Body explanation.
In conjunction with shown in Fig. 1 and Fig. 2, babinet 10 is flat cuboid, and there are one opening 101, light source module groups 20 for tool
Light extraction towards opening 101.In the present embodiment, translucent element 40 be flat diffusion panel, connect with babinet 10 and
Cover light source module group 20.Wherein, light source 2 is H at a distance from translucent element 40.In other alternate embodiments, lamp box 100
Can also be including annular outline border (not shown) and by the circular vacancy section of outline border (not shown), outline border is connect with babinet 10, thoroughly
Optical element 40 is connected to outline border and covering vacancy section.
In conjunction with shown in Fig. 1 to Fig. 3, in the present embodiment, light source module group 20 includes several width directions along babinet 10
Extend and in the evenly arranged substrate 1 of the length direction of babinet 10, light source 2 is uniformly arranged on substrate, then for entire lamp box
For 100, light source 2 is arranged in array in babinet 10.In the longitudinal direction, the spacing between adjacent light source 2 is L, as H and
Under conditions of meeting H/L≤0.3 between L, lamp box 100 has higher light-emitting uniformity.
In other alternate embodiments, substrate 1 can also extend and in babinet 10 along the length direction of babinet 10
Width direction uniformly arrange.Alternatively, light source module group 20 can only include a rectangular substrate, light source 2 is fixed on substrate
The upper and array arrangement on substrate.
In the present embodiment, light source 2 is LED light source.The both sides that each light source 2 is corresponded on substrate 1 are provided with location hole 11.
Lens 3 are circle, the one-to-one top for being covered in light source 2.
In conjunction with shown in fig. 4 to fig. 6, the concrete structure of lens 3 is as follows：
Lens 3 include incidence surface 31, the light-emitting surface 32 opposite with incidence surface 31 and the bottom surface 33 being connect with incidence surface 31, use
In the host cavity 34 of receiving light source 2, the wall surface of host cavity 34 is incidence surface 31.Lens 3 are axially symmetric structure, have symmetry axis
301, for example, lens 3 are axis rotational symmetry structure or extension type axially symmetric structure.In the present embodiment, lens 3 revolve for axis
Turn symmetrical structure, bottom surface 33 is then the ring plain being arranged around incidence surface 31, shown in fig. 6 to pass through symmetry axis 301 for lens 3
Schematic cross-section.
Incidence surface 31 is curved surface and is directed away from the direction bending of bottom surface 33, specifically, incidence surface 31 is free form surface, ellipse
Any one in spherical surface, spherical surface, paraboloid.
Light-emitting surface 32 is curved surface, it includes centrally located first surface region 321 and is arranged in first surface region 321
Second curved surface area 322 of periphery, first surface region 321 are recessed towards bottom surface 33, and the second curved surface area 322 is towards far from symmetrical
It protrudes in the direction of axis 301.In one embodiment, light-emitting surface 32 is rotatably connected by three spline curve, wherein first surface
Region 321 is rotatably connected by the first spline curve 3211 and the second spline curve 3212, and the second curved surface area 322 is by third
Spline curve 3221 rotates, and the first spline curve 3211, the second spline curve 3212 and third spline curve 3221 are each other
It is tangent.When the face type design of lens 3, by adjusting spline curve, the light-emitting angle to lens 3 can be facilitated to adjust
It is whole.
The intersection point of second spline curve 3212 and third spline curve 3221 on section is intersection point b, and intersection point b is light-emitting surface
Farthest point away from bottom surface 33 on 32.The central point O of incidence surface 311Distance relative to bottom surface 33 is h1, incidence surface 31 and bottom surface
The 33 intersection point a on section is d1 at a distance from symmetry axis 301, i.e. the distance between O points and a points are d1；Light-emitting surface 32 and enter
Spacing of the smooth surface 31 on the extending direction of symmetry axis 301 is h2, i.e. O2Point and O1The distance between be h2；Positioned at symmetry axis 301
The same side, light-emitting surface 32 away from the farthest point of symmetry axis 301 be c points, incidence surface 31 away from the farthest point of symmetry axis 301 be a points, a
The two spacing of point on bottom surface of point and c points are d2；Intersection point b relative to light-emitting surface 32 central point O2 in symmetry axis 301
Spacing on direction is h3.Meet following proportionate relationship between h1, h2, h3, d1 and d2：H2*d1/h1*d2≤0.2,0.1<h3/
h2<0.2。
In conjunction with shown in Fig. 7 and Fig. 8, meet the lens 3 of above-mentioned dimension scale relationship, be batswing tab light distribution, and maximum light
Strong angle is more than 70 °.That is, lens 3 provided in this embodiment, pass through the thickness of height and width, lens 3 to incidence surface 31
The adjustment of proportionate relationship between degree, and position to the peak of light-emitting surface 32 adjustment so that the largest light intensity of the lens 3
Angle is more than 70 ° so that the lamp box 100 of the present embodiment is in length direction, the number of the substrate 1 needed for unit distance then compared with
It is few.In conjunction with the setting of rise ratio H/L≤0.3 of lamp box 100, corresponding emergent ray is accomplished between capable of making adjacent substrate 1
Even transition, so that lamp box 100 has higher uniformity.
In conjunction with shown in Fig. 3 to Fig. 5, it is provided at least two on the bottom surface 33 of lens 3, lens 3 are positioned at 2 top of light source
Positioning region 35.It is additionally provided with recessed portion 331 on the bottom surface 33 of lens 3, from the edge of recessed portion 331 into recessed portion 331
Side protrudes at least two protrusions 36.There are two protrusion 36 is oppositely arranged on bottom surface 33, positioning region 35 is on bottom surface 33
There are two being oppositely arranged, protrusion 36 and positioning region 35 are uniformly arranged in the periphery of bottom surface 33.In the present embodiment, positioning region 35
It first corresponds to and is beaten at the position of protrusion 36 on substrate 1 when being assembled lens 3 and substrate 1 for circular positioning column
Then positioning region 35 is installed in location hole 11 by glue, then installation is complete after adhesive curing for compression.It is advanced in entire assembling process
Row positioning so that lens 3 have benchmark to be easy assembling；Simultaneously because the positioning region 35 of lens 3 reaches the location hole 11 on substrate 1
It is interior, when lens 3 are by lateral external force, it is not easy to fall off.In addition, lens 3 both can be with automation mechanized operation when fixing, it can also hand
Work operates, and greatly producing line is facilitated to produce.
In other alternative embodiments, lens 3 can also be the extendeds structures such as bar shaped.Light source 2 is alongst
With width direction array arrangement, when lens 3 are bar shaped, lens 3 are along its length or width direction is covered in the upper of light source 2
Side.Spacing between adjacent lens 3 is L, and there is still a need for meet H/L≤0.3 for the rise ratio of lamp box 100 so that lamp box 100 has
Higher light-emitting uniformity.
In conjunction with shown in Fig. 1, in the present embodiment, driving power module 30 includes multiple power packs 310 and is contained in power supply
The driving power of box 310, there are one power pack 310, power pack 310 is connected by way of clamping for one end setting of each substrate
In substrate 1.For example, there are one hollow card holding structure, substrate 1 may pass through card holding structure and clamping for setting on power pack 310
In the inside of card holding structure, to which power pack 310 is fixed on substrate 1.
Lamp box 100 provided in an embodiment of the present invention carries out light distribution by lens 3, and lens 3 are hyperboloid structure, which is
Batswing tab light distribution and largest light intensity angle are more than 70 °.By itself upper area of 1 uniform illumination of single substrate in lamp box 100, hand over
Folded place passes through the design of lens 3, and transition is uniform so that lamp box 100 has higher light-emitting uniformity.Lamp box 100 meet it is bright
Under the premise of degree requires and light-emitting uniformity requires, the number of the light source 2 of required array is less under unit area, to save
Material Cost is higher, and improves packaging efficiency.
Lens 3 provided in this embodiment are not limited to be applied to lamp box, and it is other can also to be applied to lamp panel, ceiling lamp etc.
In lamps and lanterns.
Above-described specific example has carried out further in detail the purpose of the present invention, technical solution and advantageous effect
Illustrate, it should be understood that the above is only a specific embodiment of the present invention, be not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the protection of the present invention
Within the scope of.
Claims (14)
1. a kind of lens are applied to lamp box, which is characterized in that
The lens include incidence surface, the light-emitting surface opposite with the incidence surface and the bottom surface being connect with the incidence surface, are used for
Accommodate the host cavity of light source, the vertical lens in the bottom surface section and there is symmetry axis, the wall surface of the host cavity is
The incidence surface,
The incidence surface be curved surface and be directed away from the bottom surface direction bending,
The light-emitting surface is curved surface, including centrally located first surface region and being arranged in the first surface area periphery
Second curved surface area, the first surface region are recessed towards the bottom surface, and second curved surface area is towards far from described symmetrical
The direction of axis is protruded, and the intersection point of the first surface region and second curved surface area on the section is intersection point b, described
Intersection point b is the farthest point away from the bottom surface on the light-emitting surface,
The central point of the incidence surface is h1 relative to the distance of the bottom surface, and the incidence surface is with the bottom surface in the section
On intersection point at a distance from the symmetry axis be d1, the light-emitting surface and the incidence surface are on the extending direction of the symmetry axis
Spacing be h2, be located at the symmetry axis the same side, the light-emitting surface and the incidence surface are farthest away from the symmetry axis respectively
Spacing of two points on bottom surface be d2, the intersection point b relative to the light-emitting surface central point in the side of the symmetry axis
Upward spacing is h3,
Proportionate relationship between h1, h2, h3, d1 and d2 is h2*d1/h1*d2≤0.2,0.1<h3/h2<0.2.
2. lens according to claim 1, which is characterized in that the incidence surface is free form surface, ellipsoid, spherical surface, throwing
Any one in object plane.
3. lens according to claim 1, which is characterized in that the lens are axis rotational symmetry structure, and described first is bent
Face region is rotatably connected by two different spline curve, and two spline curve are tangent.
4. lens according to claim 1, which is characterized in that the lens are tension type structure, the first surface area
Domain is formed by connecting by two different spline curve stretchings, and two spline curve are tangent.
5. lens according to claim 1, which is characterized in that be provided on the bottom surface of the lens at least two for will
The lens are positioned at the positioning region above the light source.
6. lens according to claim 5, which is characterized in that recessed portion is additionally provided on the bottom surface of the lens, by institute
The edge of recessed portion is stated to protruding at least two protrusions on the inside of the recessed portion.
7. lens according to claim 6, which is characterized in that the protrusion is relatively set with two on the bottom surface
A, there are two the positioning region is oppositely arranged on the bottom surface, the protrusion and the positioning region are uniformly arranged in described
The periphery of bottom surface.
8. a kind of light source module group, which is characterized in that including substrate, the light source of array arrangement, such as claim on the substrate
Lens described in any one of 1-7, the lens and the substrate connection and the lens are covered in the top of the light source.
9. light source module group according to claim 8, which is characterized in that the lens are round or bar shaped, when described
When mirror is round, the one-to-one top for being covered in the light source of the lens；The light source is along a first direction and with described
The vertical second direction array arrangement in one direction, when the lens are bar shaped, the lens are along the first direction or described
Second direction is covered in the top of the light source.
10. light source module group according to claim 8, which is characterized in that the substrate is bar shaped, and the light source is along the base
The extending direction of plate is evenly distributed.
11. a kind of lamp box, which is characterized in that the lamp box includes babinet, the light source module group that is fixed in the babinet and driving
The translucent element of power supply module, the covering light source module group, the light source module group are any light in claim 8-10
Source module.
12. lamp box according to claim 11, which is characterized in that the light source module group is bar shaped module, the light transmission member
Part is tabular, and the spacing between the adjacent light source module group is L, and the light source module group is at a distance from the translucent element
H, H/L≤0.3.
13. lamp box according to claim 12, which is characterized in that the driving power module includes power pack and is contained in
The driving power of the power pack, the power pack are connected in the substrate.
14. lamp box according to claim 12, which is characterized in that the lamp box further includes the outline border of annular and by described outer
The circular vacancy section of frame, the outline border are connect with the babinet, and the translucent element is connected to described in the outline border and covering and engraves
Dead zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810681499.5A CN108775554B (en) | 2018-06-27 | 2018-06-27 | Lens and lamp box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810681499.5A CN108775554B (en) | 2018-06-27 | 2018-06-27 | Lens and lamp box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108775554A true CN108775554A (en) | 2018-11-09 |
| CN108775554B CN108775554B (en) | 2023-09-29 |
Family
ID=64030445
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810681499.5A Active CN108775554B (en) | 2018-06-27 | 2018-06-27 | Lens and lamp box |
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| CN109961707A (en) * | 2019-03-31 | 2019-07-02 | 方迪勇 | A kind of constructive method of modularization arc lamp box |
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| CN110070806A (en) * | 2019-03-31 | 2019-07-30 | 方迪勇 | A kind of constructive method of modularization large lamp box |
| CN109961707A (en) * | 2019-03-31 | 2019-07-02 | 方迪勇 | A kind of constructive method of modularization arc lamp box |
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| CN110033715A (en) * | 2019-03-31 | 2019-07-19 | 湖南凯星电子科技有限公司 | A kind of back light unit for the uniform module lamp box that shines |
| CN110045542A (en) * | 2019-03-31 | 2019-07-23 | 湖南凯星电子科技有限公司 | A kind of strip backlight module and lamp box |
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| CN110043828A (en) * | 2019-03-31 | 2019-07-23 | 湖南凯星电子科技有限公司 | A kind of straight-down negative flat backlight source |
| CN110010025A (en) * | 2019-03-31 | 2019-07-12 | 湖南凯星电子科技有限公司 | A kind of constructive method of module lamp box |
| CN110136603A (en) * | 2019-03-31 | 2019-08-16 | 方迪勇 | A kind of constructive method of large modular lamp box |
| CN110060592A (en) * | 2019-03-31 | 2019-07-26 | 湖南凯星电子科技有限公司 | A kind of pin-connected panel module lamp box |
| CN110060599A (en) * | 2019-03-31 | 2019-07-26 | 湖南凯星电子科技有限公司 | A kind of assembling-type module lamp box |
| CN110060598A (en) * | 2019-03-31 | 2019-07-26 | 湖南凯星电子科技有限公司 | A kind of back light unit of assembling-type module lamp box |
| CN110111702A (en) * | 2019-03-31 | 2019-08-09 | 湖南凯星电子科技有限公司 | A kind of constructive method of pin-connected panel module lamp box |
| CN110111703A (en) * | 2019-03-31 | 2019-08-09 | 湖南凯星电子科技有限公司 | A kind of constructive method of assembling-type module lamp box |
| CN109961709A (en) * | 2019-04-01 | 2019-07-02 | 方迪勇 | A kind of assembling-type modular lamp box |
| CN110047407A (en) * | 2019-04-01 | 2019-07-23 | 方迪勇 | A kind of constructive method of assembling-type modular lamp box |
| CN114967285B (en) * | 2022-06-17 | 2023-09-29 | 杭州海康威视数字技术股份有限公司 | Light supplementing system, image pickup device and image pickup method |
| CN114967285A (en) * | 2022-06-17 | 2022-08-30 | 杭州海康威视数字技术股份有限公司 | Light supplement system, image pickup device and image pickup method |
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