CN218268884U

CN218268884U - Lens assembly and lamp

Info

Publication number: CN218268884U
Application number: CN202222015159.3U
Authority: CN
Inventors: 吴海生; 伍德生; 封雨
Original assignee: NVC Lighting Technology Corp
Current assignee: NVC Lighting Technology Corp
Priority date: 2022-08-01
Filing date: 2022-08-01
Publication date: 2023-01-10
Anticipated expiration: 2032-08-01

Abstract

The utility model provides a lens assembly, which comprises a lens, a light source assembly and an anti-dazzle cover, wherein the lens is provided with a rotational symmetry structure, the lens is provided with a light emitting part, a containing cavity is arranged on one side far away from the light emitting part, and the lens is provided with a mounting groove on the inner side of the containing cavity; the lens covers the light source assembly; the antiglare cover is mounted on the light emergent portion. The lens component is provided with the anti-dazzle cover at the light outlet part of the lens, so that the light beam effect is realized, the light outlet effect is optimized, and the lens component has the characteristic of anti-dazzle. Meanwhile, the accommodating cavity and the mounting groove which are arranged in the lens assembly take into account of the installation of the light source assembly and other functional assemblies, the utilization rate of space is improved, and the production cost is reduced. The utility model also provides a lamps and lanterns including this lens subassembly.

Description

Lens assembly and lamp

Technical Field

The utility model relates to an illumination lamps and lanterns field especially relates to a lens subassembly and lamps and lanterns.

Background

With the development of lighting fixtures, the performance of the lighting fixtures, such as adjustable illumination angle, illumination effect, illumination energy efficiency ratio, and the like, are improved to different degrees. The illumination effect is particularly interesting because it gives the most intuitive use experience to the user. UGR (unified glare rating) is currently used in the lighting market to measure the psychological parameters of subjective reaction of discomfort to human eyes caused by light emitted by indoor lighting devices. Common means of adjusting UGR include adding an antiglare shield, adding a lens to the light source, etc.

In the prior art, an annular lens system is disclosed, comprising a substrate, SMD patch light sources arranged substantially and annularly, and a lens fixedly arranged above the substrate; the lens is of a bowl-shaped structure and comprises a bottom surface, a side surface and a top surface, the bottom surface is upwards protruded at the joint of the bottom surface and the side surface to form a light inlet part, the light inlet part is of an annular structure and covers the SMD patch light source, and therefore the size of the light distribution device is reduced while a good light distribution effect is achieved. However, this structure does not solve the problem of anti-glare and does not take into account the compatibility with other components of the lamp.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem that prior art exists, the utility model provides a lens subassembly, this lens subassembly still are equipped with anti-dazzle cover, make this lens subassembly have the function of anti-dazzle, are favorable to improving user and use experience, still are equipped with the mounting groove that is used for installing power supply unit in the lens of this lens subassembly simultaneously, have still improved the utilization ratio in space when reducing the size.

The utility model also provides a lamps and lanterns including this lens subassembly.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a lens assembly includes a lens, a light source assembly and an antiglare shield,

the lens is provided with a light emitting part, an accommodating cavity is arranged on one side far away from the light emitting part, and an installation groove is formed in the inner side of the accommodating cavity;

the lens covers the light source assembly;

the antiglare shield is mounted on the light emergent portion.

As a further description of the technical solution of the present invention, on a cross section formed by the glare shield and the lens together, an end point of the light-emitting portion is far away from the glare shield, and a connection line of the end point of the light-emitting portion located in the opposite direction is formed as a light-shielding line, and the light-shielding line and the light-emitting portion form a light-shielding angle, and the light-shielding angle is in a range of 25 ° to 35 °.

As a further description of the technical solution of the present invention, the lens includes a bottom portion, a side wall, and a light emitting portion, the side wall is connected to the bottom portion and the light emitting portion, respectively; the accommodating cavity is recessed from the bottom part to the direction close to the light outlet part and is formed by surrounding along the side wall.

As a further description of the technical solution of the present invention, the light source assembly includes a substrate and a plurality of light emitting units annularly distributed on the substrate, the light emitting units are installed in the accommodating cavity, and the bottom is fixedly connected to the substrate.

As a further description of the technical solution of the present invention, the mounting groove is formed by the bottom being depressed in the middle toward the direction of the light-emitting portion.

As a further description of the technical solution of the present invention, the power supply device further includes a power supply unit, the power supply unit is disposed in the mounting groove.

As a further description of the technical solution of the present invention, the light emitting portion is a frosted surface or a beaded surface.

As further description of the technical solution of the present invention, the antiglare shield is an injection-molded integrally-formed PC ring or a spin-formed aluminum ring; the anti-dazzle cover is of a bowl-shaped structure.

As a further description of the technical solution of the present invention, the lens is a TIR lens made of PC or PMMA.

The utility model also provides a lamp, including the lamp body, and above arbitrary the lens subassembly.

Compared with the prior art, the utility model beneficial effect be:

(1) This lens subassembly is equipped with anti-dazzle cover at the light-emitting portion of lens, has sheltered from partial miscellaneous light, has realized a beam light effect, has optimized the light-emitting effect of this lens subassembly, makes this lens subassembly have anti-dazzle characteristics, gives the user and brings good use experience.

(2) Be equipped with in this lens subassembly and hold chamber and mounting groove, wherein hold the setting in chamber and taken into account luminous unit's grading and heat dissipation function, the mounting groove has realized the assembly function of this lens with other subassemblies, consequently this lens subassembly has improved the utilization ratio in space to reduce the size of lens, when realizing best performance the cost is reduced.

Drawings

Fig. 1 is an assembly schematic of a lens assembly of the present invention.

Fig. 2 is a schematic structural diagram of the lens of the present invention.

Fig. 3 is a cross-sectional view of a lens of the present invention.

Fig. 4 is a schematic structural diagram of the light source assembly of the present invention.

Fig. 5 is a 60 ° light distribution curve diagram of the lamp of the present invention.

Fig. 6 is a UGR test result diagram of the lamp of the present invention.

Reference numerals:

1 lens, 11 light emitting part, 12 bottom, 13 side wall, 14 accommodating cavity, 15 mounting groove, 141 first light distribution surface, 142 second light distribution surface, 143 third light distribution surface and 151 fourth light distribution surface;

2 light source assembly, 21 substrate, 22 light emitting unit;

3 an anti-dazzle cover.

Detailed Description

To facilitate an understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings and specific examples. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1

Fig. 1 shows an assembly schematic diagram of a lens assembly in the present embodiment, fig. 2 and 3 show a structural schematic diagram and a cross-sectional view of a lens, and referring to fig. 1 to 3 in combination, the lens assembly includes a lens 1, a light source assembly 2 and an antiglare cover 3. Wherein, the anti-dazzle cover 3 and the light source component 2 are respectively arranged at the upper side and the lower side of the lens 1.

Specifically, the lens 1 has a rotationally symmetric structure with a wide top and a narrow bottom. The wider side of the lens 1 is the light emergent part 11, the side far away from the light emergent part 11 is the bottom part 12, and the side wall 13 connects the light emergent part 11 and the bottom part 12. The bottom 12 of the lens 1 is recessed toward the light emergent portion 11 to form an accommodating cavity 14, and the accommodating cavity 14 is annularly arranged on the bottom 12 along the sidewall 13 of the lens 1. Inside the accommodating chamber 14, the bottom portion 12 of the lens 1 is recessed in a direction toward the light exit portion 11 to form an installation groove 15 having a narrow top and a wide bottom.

As shown in fig. 1, the bottom 12 of the lens 1 covers over the light source assembly 2. The light source assembly 2 includes a substrate 21 and light emitting units 22 annularly distributed on the substrate 21, wherein the light emitting units 22 are arranged in a shape adapted to the accommodating cavity 14 and are covered in the accommodating cavity 14. On the other side, the light exit portion 11 of the lens 1 is provided with an antiglare cover 3. The light emitted from the light emitting unit 22 is finally emitted from the lens assembly with good light distribution effect after being reflected and refracted by the lens 1 and the antiglare cover 3.

With particular reference to fig. 3, the side of the housing cavity 14 adjacent the side wall 13 of the lens 1 is a first light-distributing surface 141, the side adjacent the mounting slot 15 is a second light-distributing surface 142, the side at the top of the housing cavity 14 is a third light-distributing surface 143, and the side of the mounting slot 15 adjacent the housing cavity 14 is a fourth light-distributing surface 151.

The light emitted from the light emitting unit 22 forms various light paths exiting from the light exiting portion 11 in the lens 1, specifically, the light emitting unit 22 is covered in the accommodating cavity 14 and emits light, and the light enters the lens 1 from the accommodating cavity 14, in this process, the light needs to pass through the first light-matching surface 141, the second light-matching surface 142 and the third light-matching surface 143 at the accommodating cavity 14. After the light is incident on the first light-matching surface 141 and the second light-matching surface 142, since the lens 1 in this embodiment is a TIR lens 1, and the material is usually one of PC or PMMA, so that the refractive index of the lens 1 is larger than that of air, the light is refracted at the first light-matching surface 141 and the second light-matching surface 142 and refracted to the fourth light-matching surface 151 at the mounting groove 15 and the side wall 13 of the lens 1. Wherein, the light passing through the first light-matching surface 141 is refracted to the sidewall 13 of the lens 1; the light passing through the second light-distributing surface 142 is refracted to the fourth light-distributing surface 151 of the mounting groove 15. The fourth light distribution surface 151 and the sidewall 13 serve as total reflection surfaces of the lens 1, which are rotationally symmetric with a rotational axis x. The light emitted from the light emitting unit 22 is totally reflected by the fourth light distribution surface 151 and the sidewall 13, and finally exits from the light exiting portion 11. Meanwhile, part of the light emitted by the light emitting unit 22 is refracted when passing through the third light matching surface 143, and is also emitted from the light emitting part 11 after being refracted.

Therefore, light emitted by the light emitting unit 22 mainly passes through a cavity formed by the first light-matching surface 141, the second light-matching surface 142, the third light-matching surface 143, the fourth light-matching surface 151, the side wall 13 and the light-emitting portion 11 to be reflected and refracted, and then is emitted from the light-emitting portion 11. The cavity in the lens 1 has a rotationally symmetric structure, and light incident on the fourth light distribution surface 151 and the sidewall 13 is totally reflected in the cavity and emitted from the light emitting portion 11, so that the utilization rate of a light source is improved.

In summary, the lights emitted from the light emitting units 22 distributed in a ring shape are mixed by the optical effect of the lens 1 to realize secondary light distribution, so that the lights are emitted from the lens 1 more intensively and uniformly.

In addition, in the present embodiment, the light emitting portion 11 of the lens 1 is a plane with a bead structure, and can mix the emitted light, thereby reducing chromatic aberration and homogenizing the light. Of course, in some embodiments, the light emergent portion 11 may also be a surface formed by a frosted structure, a corrugated structure, or the like.

The light-emitting part 11 is also provided with an anti-dazzle cover 3, the anti-dazzle cover 3 is of a bowl-shaped structure with a wide top and a narrow bottom, and the narrow end of the anti-dazzle cover 3 is connected with the light-emitting part 11 and is also of a rotationally symmetrical structure similar to the lens 1. Referring to fig. 1, in the cross section formed by the antiglare cap 3 and the lens 1, a light-shielding line is formed by connecting one end of the antiglare cap 3 far from the light-emitting portion 11 and an end located in the opposite direction on the light-emitting portion 11, and the light-shielding line and the plane of the light-emitting portion 11 form a light-shielding angle θ, which is controlled within a range of 25 ° to 35 °, and in the present embodiment, the light-shielding angle θ is preferably 25 ° in consideration of the light distribution and the overall size of the lens 1.

Meanwhile, since the glare shield 3 and the lens 1 are both rotationally symmetric structures, as can be seen from fig. 1 to 3, the glare shield 3 and the lens 1 are coaxial annular bodies, and the axis of symmetry is y. The light emitted by the light emitting unit 22 is emitted from the light emitting part 11 after the optical action of the lens 1, and the anti-dazzle cover above the lens can gather the stray light in the large-angle direction, so that the function of light beam restriction is achieved, the problem of glare generation is effectively reduced, and the unified glare index is reduced.

It should be added that the antiglare shield 3 can be a bowl-shaped structure formed by injection molding of PC material or a bowl-shaped structure formed by spinning of aluminum material, and the surface thereof can be processed according to the requirements, such as being sprayed with different colors like black and gold.

Fig. 4 is a schematic structural diagram of a light source assembly in this embodiment, and referring to fig. 1 to 4, in this embodiment, the light emitting units 22 are closely arranged in a circular ring shape on the substrate 21, and can be approximately used as a continuous light emitter. In the light-transmitting assembly, the distance between the symmetry axis x and the symmetry axis y is a, and the size of a is determined by the diameter of the annular distribution of the light-emitting units 22 on the light source assembly 2 and the size design of the lens 1. Meanwhile, the number of the light-emitting units 22 can be adjusted according to the requirement, so that the diameter of a circular ring formed by the light-emitting units 22 is changed, the light-emitting units 22 are matched with the accommodating cavity 14 of the lens 1, and the effects of light distribution and light control are achieved. It should be noted that the light emitting units 22 should be arranged as closely as possible without affecting the electrical performance of the light source, so that the diameter of the light source arrangement is as small as possible, thereby ensuring that the size of the lens 1 is as small as possible.

In addition, compared with the centralized distribution of the light emitting units 22, the annular distribution of the light emitting units 22 in the present embodiment also achieves heat dispersion while dispersing the light source, thereby reducing the heat dissipation pressure of the light transmissive component, reducing the heat dissipation cost required by the light transmissive component, and further prolonging the service life of the light emitting units 22.

In particular, the base plate 21 is further mounted with a power supply member on the inner side of the circular ring formed by the light emitting unit 22, and the power supply member is mounted in the mounting groove 15 positioned on the inner side of the accommodating chamber 14, thereby realizing the built-in of the power supply member, saving the cost, improving the space utilization rate, and further reducing the size of the lamp in which the lens 1 assembly is mounted.

Example 2

In the present embodiment, a lens 1 assembly is provided, which includes a lens 1, a light source assembly 2 and an antiglare shield 3. Wherein, the anti-dazzle cover 3 and the light source component 2 are respectively arranged at two sides of the lens 1.

Specifically, the lens 1 has a rotationally symmetric structure with a wide top and a narrow bottom. The wider side of the lens 1 is a light emergent part 11, the side far away from the light emergent part 11 is a bottom part 12, and a side wall 13 connecting the light emergent part 11 and the bottom part 12. The bottom 12 of the lens 1 is recessed toward the light emergent portion 11 to form an accommodating cavity 14, and the accommodating cavity 14 is annularly arranged on the bottom 12 along the sidewall 13 of the lens 1. Inside the accommodating chamber 14, the bottom portion 12 of the lens 1 is recessed in a direction toward the light exit portion 11 to form an installation groove 15 having a narrow top and a wide bottom.

The bottom 12 of the lens 1 is provided with a light source assembly 2, the light source assembly 2 comprises a substrate 21 and light emitting units 22 annularly distributed on the substrate 21, and the light emitting units 22 are arranged in a shape matched with the accommodating cavity 14 and are covered in the accommodating cavity 14. On the other side, the light exit portion 11 of the lens 1 is attached with the antiglare cap 3.

In the present embodiment, the glare shield 3 has a bowl-shaped structure with a wide top and a narrow bottom, and the narrow end of the glare shield 3 is connected to the light emergent portion 11, and similarly has a rotationally symmetric structure similar to the lens 1. Referring to fig. 1, in the cross section formed by the glare shield 3 and the lens 1, a light shielding line is formed by connecting one end of the glare shield 3 away from the light exit portion 11 and the end located in the opposite direction on the light exit portion 11, and the light shielding line and the plane of the light exit portion 11 form a light shielding angle θ, and in the present embodiment, the light shielding angle θ is preferably 35 ° in consideration of the light distribution and the overall size of the lens 1.

Example 3

The embodiment provides a lamp, including lamp body and 1 subassembly of lens, 1 subassembly of lens includes antiglare shield 3, lens 1 and light source subassembly 2, and the lamp body is connected with light source subassembly 2.

Fig. 5 is a 60 ° light distribution graph of the lamp of the present embodiment, and fig. 6 is a UGR test result graph of the lamp of the present embodiment. With reference to fig. 5 and fig. 6, the lamp can meet the light distribution requirement of basic lighting, and the UGR value of the lamp adopting the lens 1 assembly is far less than 16. For example, in the present embodiment, the 12w down lamp has a spatial dimension X: the Y ratio is 4H:8H, the ceiling reflectivity is 70%, the wall reflectivity is 50%, and the floor reflectivity is 20%, the UGR is 13.95, and the anti-dazzle effect is good.

The foregoing is merely illustrative and explanatory of the structure of the present invention, which is described in more detail and with greater particularity, and is not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, many variations and modifications are possible without departing from the inventive concept, and such obvious alternatives fall within the scope of the invention.

Claims

1. A lens assembly is characterized by comprising a lens, a light source component and an anti-dazzle cover,

the lens covers the light source assembly;

the antiglare shield is mounted on the light emergent portion.

2. The lens assembly according to claim 1, wherein, in a cross section formed by the glare shield and the lens together, one end of the glare shield, which is far from the light exit portion, is connected to an end of the light exit portion, which is located in an opposite direction, to form a light-shielding line, and the light-shielding line forms a light-shielding angle with the light exit portion, the light-shielding angle being in a range of 25 ° to 35 °.

3. The lens assembly of claim 1, wherein the lens comprises a base portion, sidewalls and a light exit portion, the sidewalls being connected to the base portion and the light exit portion, respectively; the accommodating cavity is recessed from the bottom part to the direction close to the light outlet part and is formed by surrounding along the side wall.

4. The lens assembly of claim 3, wherein the light source assembly comprises a substrate and a plurality of light emitting units annularly distributed on the substrate, the light emitting units are mounted in the accommodating cavities, and the bottom portion is fixedly connected with the substrate.

5. The lens assembly according to claim 4, wherein said mounting groove is formed by said bottom portion being depressed in the middle toward the direction of said light exit portion.

6. The lens assembly of claim 5, further comprising a power supply; the power supply part is arranged in the mounting groove.

7. The lens assembly of claim 1, wherein the light exit portion is a frosted surface or a beaded surface.

8. The lens assembly of claim 1, wherein the antiglare cover is an injection molded integrally formed PC ring or a spin-on formed aluminum ring; the anti-dazzle cover is of a bowl-shaped structure.

9. The lens assembly of claim 1, wherein the lens is a TIR lens made of PC or PMMA.

10. A luminaire comprising a lamp body and a lens assembly as claimed in any one of claims 1-9.