CN221631720U - Lamp cap and lamp - Google Patents

Abstract

The utility model relates to the technical field of lighting equipment, and provides a lamp cap and a lamp, wherein the lamp cap comprises: the light guide plate is provided with a first surface and a second surface which are opposite to each other, and a peripheral side surface connecting the first surface and the second surface, wherein the first surface is provided with a microstructure pattern; the reflecting sheet is arranged opposite to the first surface; the light source is arranged on the peripheral side surface of the light guide plate; the microstructure pattern comprises a first microstructure area and a second microstructure area, wherein the first microstructure area is provided with a plurality of first bulges, the second microstructure area is provided with a plurality of second bulges, and the transmissivity of the first microstructure area is smaller than that of the second microstructure area. The lamp cap can form two different brightness areas on the light-emitting surface, and presents design patterns with ornamental value and aesthetic feeling, so that the lighting requirement and the personalized use requirement of consumers are met simultaneously, the lamp structure is simplified, the traditional diffusion plate is not required to be arranged on the light-emitting side of the light guide plate, and the production cost is reduced.

Description

Lamp cap and lamp

Technical Field

The utility model relates to the technical field of lighting equipment, in particular to a lamp cap and a lamp.

Background

Various lighting fixtures are visible everywhere in people's work and life. With the upgrade of consumption, the personalized demands of consumers on the lighting fixtures are becoming stronger, and the basic lighting functions provided by the fixtures are not satisfied, such as providing comfortable and healthy lighting environments with large illumination areas, no glare, high uniformity and the like, so that the ornamental value and the illumination aesthetic feeling of the fixtures are pursued. In the related art, a specific pattern is formed on the light emitting surface by combining and emitting light of multiple types of light sources, but the structure of the lamp is complicated, and the production cost of the lamp is increased.

Disclosure of utility model

The utility model provides a lamp cap and a lamp, which are used for solving the technical problem that the lamp structure is complex because a specific pattern is formed on a light-emitting surface by combining and emitting light of a plurality of types of light sources in the prior art.

The utility model provides a lamp cap, comprising:

The light guide plate is provided with a first surface and a second surface which are opposite to each other, and a peripheral side surface connecting the first surface and the second surface, wherein the first surface is provided with a microstructure pattern;

The reflecting sheet is arranged opposite to the first surface;

a light source arranged on the peripheral side surface of the light guide plate;

The microstructure pattern comprises a first microstructure area and a second microstructure area, wherein the first microstructure area is provided with a plurality of first protrusions, the second microstructure area is provided with a plurality of second protrusions, and the transmissivity of the first microstructure area is smaller than that of the second microstructure area.

Optionally, the first microstructure area includes a plurality of first sub-partitions, and the second microstructure area includes a plurality of second sub-partitions, and each of the first sub-partitions is distributed with a plurality of second sub-partitions around.

Optionally, the microstructure pattern further includes a third microstructure area, where a plurality of third protrusions are provided in the third microstructure area, and the third microstructure area partitions the second microstructure area into the plurality of second sub-partitions;

the transmittance of the third microstructure area is greater than the transmittance of the first microstructure area and less than the transmittance of the second microstructure area.

Optionally, the transmittance of the first microstructure area is 3% -8%, the transmittance of the second microstructure area is 85% -95%, and the transmittance of the third microstructure area is 15% -25%.

Optionally, a part of light emitted by the light source is refracted out of the first surface through the first protrusion, the second protrusion and the third protrusion, so that a football pattern is displayed on the second surface.

Optionally, a part of light emitted by the light source is refracted out of the first surface through the first protrusion and the second protrusion, so that panda patterns are displayed on the second surface.

Optionally, the dimensions of the first protrusion and the second protrusion in the plate surface direction of the light guide plate are smaller than 80 μm.

Optionally, the thickness of the light guide plate is 2-5mm.

Optionally, the light guide plate includes a plate body and a film layer, the film layer is attached to the plate body, the microstructure pattern is disposed on the film layer, and the film layer is a UV cured layer.

The utility model also provides a lamp, which comprises any lamp holder.

According to the lamp cap and the lamp, the first microstructure area and the second microstructure area are arranged on the first surface of the light guide plate, the first microstructure area is provided with the plurality of first protrusions, and the second microstructure area is provided with the plurality of second protrusions, so that the transmissivity of the first microstructure area is smaller than the transmissivity of the second microstructure area. Therefore, the light emitted by the light source can form two different color areas on the second surface after passing through the light guide plate, the shape, the distribution and the position relation of the first microstructure area and the second microstructure area can be adjusted, so that the design pattern with ornamental value and aesthetic feeling can be displayed on the second surface, namely the light emitting surface of the lamp cap, and meanwhile, the lighting requirement and the personalized use requirement of consumers are met, the lamp structure is simplified, and the production cost is reduced.

Drawings

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a lamp cap structure provided by the utility model;

FIG. 2 is a schematic diagram of microstructure on a first surface of a light guide plate of a lamp cap according to the present utility model;

FIG. 3 is a schematic view of an optical path of a light guide plate according to the present utility model;

FIG. 4 is a schematic diagram of an explosion structure of a lamp provided by the utility model;

Reference numerals:

1. A light guide plate; 11. a first surface; 12. a second surface; 13. a peripheral side surface; 141. a first microstructure area; 1411. a first sub-partition; 142. a second microstructure region; 1421. a second sub-partition; 143. a third microstructure area; 15. a film coating layer; 2. a light source; 3. a reflection sheet; 4. a housing.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present embodiment more apparent, the technical solutions in the present embodiment will be clearly and completely described below with reference to the drawings in the present embodiment, and it is apparent that the described embodiments are some embodiments of the present embodiment, but not all embodiments. All other embodiments, based on the embodiments in this embodiment, which a person of ordinary skill in the art would obtain without making any inventive effort, are within the scope of the protection of this embodiment.

In the description of the present embodiment, it should be noted that the terms "first," "second," and "third" are used for clarity in describing the numbering of the product components and do not represent any substantial distinction unless explicitly specified or defined otherwise. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances. Furthermore, the meaning of "plurality" is two or more. In the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally indicates that the associated object is an "or" relationship.

In the description of the present embodiment, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The lamp cap and the luminaire of the present embodiment are described below with reference to fig. 1 to 4.

As shown in fig. 1, the lamp cap provided in this embodiment includes a light guide plate 1, a light source 2, and a reflecting sheet 3. The light guide plate 1 has a first surface 11 and a second surface 12 opposite to each other, and a peripheral side surface 13 connecting the first surface 11 and the second surface 12, the first surface 11 being provided with a microstructure pattern. The reflective sheet 3 is disposed opposite the first surface 11. The light source 2 is provided on the peripheral side surface of the light guide plate 1.

As shown in fig. 2, the microstructure pattern includes a first microstructure area 141 and a second microstructure area 142, and the two hatched patterns in fig. 2 represent the first microstructure area 141 and the second microstructure area 142, respectively. The first microstructure area 141 is provided with a plurality of first protrusions, the second microstructure area 142 is provided with a plurality of second protrusions, and the transmittance of the first microstructure area 141 is smaller than that of the second microstructure area 142.

The light guide plate 1 is made of a light-transmitting material, such as a light-transmitting plastic. The light source 2 is disposed around the light guide plate 1 and opposite to the peripheral side 13 of the light guide plate 1, and the light source 2 includes a plurality of LED lamps circumferentially distributed around the peripheral side of the light guide plate 1, for example, the light source 2 is an LED light band. The first protrusions and the second protrusions are micro-structured protrusions protruding from the first surface 11, such that the first micro-structured area 141 and the second micro-structured area 142 form two kinds of micro-structured surfaces having different transmittance.

Referring to fig. 3, the lamp cap of the present embodiment is a side-emitting lamp cap, and after light emitted from the light source 2 enters the light guide plate 1 from the peripheral side surface 13, a part of the light is directly emitted from the second surface 12 out of the light guide plate 1; after being reflected by the first surface 11, a part of the light is emitted out of the light guide plate 1 from the second surface 12; a further part of the light is refracted out of the light guide plate 1 by the first surface 11 into the space between the light guide plate 1 and the reflector plate 3.

When the light source 2 is turned on, most of the light emitted from the light source 2 to the first protrusion and the second protrusion is reflected and emitted from the second surface 12 to the light guide plate 1, and the light is used for illumination; a small portion of the light emitted from the light source 2 toward the first and second protrusions is refracted out of the light guide plate 1 from the first surface. A part of the light rays refracted out of the light guide plate 1 from the first surface 11 is reflected by the reflection sheet 3 and then re-enters the light guide plate 1, and is emitted from the second surface 12, and a part of the light rays cannot re-enter the light guide plate 1.

Due to the different shapes of the first protrusions and the second protrusions, the light refracted out through the first microstructure area 141 and entering the light guide plate 1 again is less than the light refracted out through the second microstructure area 142 and entering the light guide plate 1 again, so that the first microstructure area 141 and the second microstructure area 142 have different transmittances. In this way, the location on the second surface 12 corresponding to the first microstructure area 141 is darker in color than the location corresponding to the second microstructure area 142, i.e. a pattern of two light and dark areas is present on the second surface 12. In an actual product, the shape, distribution, and positional relationship of the first and second microstructure areas 141, 142 may be set according to the pattern desired to be presented on the second surface 12.

Wherein, since most of the light emitted by the light source 2 is directly reflected by the first protrusion and the second protrusion and then emitted out of the light guide plate 1 from the second surface 12, even if the human eyes see that the second surface 12 has different patterns of bright and dark areas, the normal illumination of the lamp cap is not affected.

The lamp cap provided in this embodiment is configured such that the first surface 11 of the light guide plate 1 is provided with the first microstructure area 141 and the second microstructure area 142, and the first microstructure area 141 is provided with a plurality of first protrusions, and the second microstructure area 142 is provided with a plurality of second protrusions, so that the transmittance of the first microstructure area 141 is smaller than the transmittance of the second microstructure area 142. Therefore, the light emitted by the light source 2 can form two different color areas on the second surface 12, namely the light emitting surface of the lamp cap, after passing through the light guide plate 1, the design patterns with ornamental and aesthetic feeling can be displayed on the light emitting surface by adjusting the shapes, the distribution and the position relation of the first microstructure area 141 and the second microstructure area 142, meanwhile, the lighting requirement and the personalized use requirement of consumers are met, the lamp structure is simplified, and the production cost is reduced.

In this embodiment, at least a part of the area of the first surface 11 is provided with the microstructure pattern. For example, the light guide plate 1 is a circular plate, and the microstructure patterns are distributed on the whole surface of the first surface 11, so that the whole surface of the second surface 12 presents patterns composed of different colors.

As shown in fig. 2, in the present embodiment, the first microstructure area 141 includes a plurality of first sub-partitions 1411, and the second microstructure area 142 includes a plurality of second sub-partitions 1421, and each of the first sub-partitions 1411 has a plurality of second sub-partitions 1421 distributed around it.

Note that, circumferentially distributed about the first sub-partition 1411 refers to annularly or partially annularly circumferentially distributed about the first sub-partition 1411. The first and second sub-partitions 1411 and 1421 may have the same or different shapes and sizes. The first sub-partitions 1411 may have the same or different shapes and the second sub-partitions 1421 may have the same or different shapes and sizes.

The first sub-partition 1411 and the second sub-partition 1421 may be connected to each other or separated from each other. The specific shape and size of each of the first and second sub-sections 1411, 1421 may be personalized as desired to the pattern effect to be presented on the second surface 12.

For example, the first and second sub-partitions 1411, 1421 are each circular. For another example, the first sub-partition 1411 and the second sub-partition 1421 are each a polygon, and sides of the polygon may be straight sides or arc sides. One side of each side of the first sub-partition 1411 is provided with a second sub-partition 1421. The polygon may be a triangle, a rectangle, a pentagon, a hexagon, or the like, and different polygons may enable the second surface 12 of the light guide plate 1 to exhibit different pattern effects.

Wherein, for a first sub-partition 1411 spaced apart from an edge of the microstructure pattern, a plurality of second sub-partitions 1421 may be annularly distributed around a circumference of the first sub-partition 1411; for the first sub-partition 1411 connected to the edge of the microstructure pattern, a plurality of second sub-partitions 1421 can be disposed around only the portion of the first sub-partition 1411 located inside the edge.

Among the plurality of second sub-partitions 1421 surrounding the first sub-partition 1411, two adjacent second sub-partitions 1421 may be disposed at intervals, and another first sub-partition 1411 may be disposed.

For example, the first sub-partition 1411 and the second sub-partition 1421 are square, and one first sub-partition 1411 is disposed between every two adjacent second sub-partitions 1421 in the plurality of second sub-partitions 1421 surrounding the first sub-partition 1411. The transmittance of the first microstructure areas 141 is 3% to 8%, such as 5%, so that the positions on the second surface 12 corresponding to the first microstructure areas 141 are black; the second microstructure areas 142 have a transmittance of 85% to 95%, such as 90%, and the second surface 12 is white at a position corresponding to the second microstructure areas 142. Thus, the second surface 12 of the light guide plate 1 is made to exhibit a checkerboard-like pattern.

As shown in fig. 2, in this embodiment, the microstructure pattern further includes a third microstructure area 143, and the third microstructure area 143 is provided with a plurality of third protrusions. The third microstructure area 143 divides the second microstructure area 142 into a plurality of second sub-areas 1421. The transmittance of the third microstructure area 143 is greater than the transmittance of the first microstructure area 141 and less than the transmittance of the second microstructure area 142.

Wherein, most of the light emitted from the light source 2 to the third protrusion is reflected and then emitted from the second surface 12 to the light guide plate 1, and the light is used for illumination; a small portion of the light emitted from the light source 2 toward the third protrusion is refracted out of the light guide plate 1. A part of the light rays refracted out of the light guide plate 1 from the first surface 11 is reflected by the reflection sheet 3 and then re-enters the light guide plate 1, and is emitted from the second surface 12, and a part of the light rays cannot re-enter the light guide plate 1.

The light refracted out through the third microstructure area 143 and re-entering the light guide plate 1 is more than the light refracted out through the first microstructure area 141 and re-entering the light guide plate 1, and is less than the light refracted out through the second microstructure area 142 and re-entering the light guide plate 1, so that the transmittance of the third microstructure area 143 is greater than the transmittance of the first microstructure area 141 and less than the transmittance of the second microstructure area 142. Thus, the location on the second surface 12 corresponding to the third microstructure area 143 is lighter in color than the location of the first microstructure area 141 and darker than the location of the second microstructure area 142, rendering a pattern of three light and dark areas on the second surface 12.

Wherein, adjacent second sub-partitions 1421 are separated by third microstructure areas 143, and adjacent first sub-partitions 1411 and second sub-partitions 1421 are also separated by third microstructure areas 143, and the blank area in fig. 2 is the third microstructure area 143. That is, the third microstructure area 143 is divided into a plurality of sub-areas in the microstructure pattern, wherein a part of the sub-areas is a first sub-area 1411 and the other part is a second sub-area 1421.

In the case where the plurality of second sub-partitions 1421 surrounding the first sub-partition 1411 do not have the first sub-partition 1411 with respect to each other, the adjacent second sub-partitions 1421 are separated by the third microstructure region 143.

For example, the first sub-partition 1411 and the second sub-partition 1421 spaced apart from the edges of the microstructure pattern are each hexagonal, and six second sub-partitions 1421 surrounding the first sub-partition 1411 are provided, wherein every two adjacent second sub-partitions 1421 are separated by the third microstructure region 143.

The present embodiment can achieve different pattern effects on the second surface 12 by adjusting the shape, distribution and positional relationship of the first microstructure areas 141 and the second microstructure areas 142.

For example, a portion of the light emitted from the light source 2 is refracted out of the first surface 11 through the first protrusion, the second protrusion and the third protrusion, so that the second surface 12 of the light guide plate 1 presents a football pattern. On this basis, the plurality of first and second sub-partitions 1411 and 1421 may be arranged to form a soccer pattern having a stereoscopic effect by adjusting the shapes of the first and second sub-partitions 1411 and 1421.

For another example, a part of the light emitted by the light source 2 is refracted out of the first surface 11 through the first protrusion and the second protrusion, so that a pattern with black and white color characteristics such as a panda pattern, a zebra pattern, or a ink and wash painting is displayed on the second surface 12. Of course, other types of designs, such as basketball designs or cartoon designs, may be provided in addition to designs having black and white features.

It should be noted that the first protrusions in the first microstructure area 141 may be the same or different in size, and the first protrusions with the same size are distributed in the first microstructure area 141 according to a set rule. The second protrusions in the second microstructure area 142 may have the same or different sizes, and the second protrusions with the same size are distributed in the second microstructure area 142 according to a set rule. The third protrusions in the third microstructure area 143 may have the same size or different sizes, and the third protrusions with the same size are distributed in the third microstructure area 143 according to a set rule.

Alternatively, the surfaces of the first protrusion and the second protrusion in this embodiment are conical surfaces, spherical surfaces, ellipsoidal surfaces, or free curved surfaces, which are not particularly limited in this embodiment. The first protrusion and the second protrusion are free-form surfaces as shown in fig. 3. The first and second microstructure areas 141 and 142, respectively, have a specific transmittance by adjusting the slope of the curved surface of the first and second protrusions, as will be understood and implemented by those skilled in the art.

Specifically, the transmittance of the first microstructure area 141 is 3% to 8%, for example, 5%, that is, most of the light refracted from the first surface 11 of the light guide plate 1 through the first protrusion cannot be reflected back to the light guide plate 1 through the reflective sheet 3, so that the position on the second surface 12 corresponding to the first microstructure area 141 is black.

The transmissivity of the second microstructure area 142 is 85% -95%, for example 90%, that is, most of the light refracted from the first surface 11 of the light guide plate 1 through the second protrusions can be reflected back to the light guide plate 1 through the reflective sheet 3 and emitted from the second surface 12, so that the position on the second surface 12 corresponding to the second microstructure area 142 appears white.

The transmittance of the third microstructure area 143 is 15 to 25%, for example, 20%, that is, a larger portion of the light refracted from the first surface 11 of the light guide plate 1 through the third protrusion cannot be reflected back to the light guide plate 1 through the reflective sheet 3, so that the position on the second surface 12 corresponding to the third microstructure area 143 appears gray.

In some embodiments, the first protrusion, the second protrusion, and the third protrusion in the microstructure pattern described in the above embodiments are integrally formed with the light guide plate 1.

In other embodiments, the light guide plate 1 includes a plate body and a coating layer 15, the coating layer 15 is attached to the plate body, and the microstructure pattern is disposed on the coating layer 15. In actual production, the coating layer 15 may be bonded to the board body after the coating layer 15 is manufactured.

As a specific example, the coating layer 15 is a UV cured layer. When the UV glue is in a liquid state, the liquid UV glue is transferred onto the plate body in a pad printing mode, a UV curing layer with a microstructure is formed after the UV glue is cured, and micro-structure protrusions which are densely covered with hemp and invisible to naked eyes are formed on the UV curing layer. Compared with the traditional method of manufacturing the microstructure by laser etching, the method has higher production efficiency, can obtain the microstructure protrusion with smaller volume, and improves the light control effect of the light guide plate 1.

Alternatively, the first protrusions and the second protrusions have a size of less than 80 μm in the plate surface direction of the light guide plate 1. Optionally, the height of the first protrusions and the second protrusions relative to the light guide plate 1 is also less than 80 μm. Similarly, the dimension of the third protrusion in the plate surface direction of the light guide plate 1 is smaller than 80 μm, and the height of the third protrusion relative to the light guide plate 1 is also smaller than 80 μm.

Alternatively, the thickness of the light guide plate 1 is 2-5mm, such as 4mm, depending on the size of the light source 2, and a smaller thickness is advantageous for reducing the size and weight of the lamp.

The embodiment also provides a lamp, as shown in fig. 4, which includes the lamp cap in any of the embodiments above. The lamp further comprises a housing 4, and the lamp cap is arranged in the housing 4. Wherein, light guide plate 1 can be with the some light-emitting of a plurality of LED lamps turn into even luminous to through the distribution in the micro-structure district on its first surface 11 make appear art pattern on the second surface 12, satisfy illumination demand and consumer individualized user demand simultaneously, lamps and lanterns simple structure need not to set up traditional diffuser plate at the light-emitting side of light guide plate, has reduced manufacturing cost. The uniform and comfortable illumination of a large illumination area or the illumination of a small illumination area without glare can be realized by adjusting the protruding shape of the microstructure.

Finally, it should be noted that: the above embodiments are merely for illustrating the technical solution of the present embodiment, and are not limited thereto; although the present embodiment has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments.

Claims (10)

1. A lamp head, comprising:

The light guide plate is provided with a first surface and a second surface which are opposite to each other, and a peripheral side surface connecting the first surface and the second surface, wherein the first surface is provided with a microstructure pattern;

The reflecting sheet is arranged opposite to the first surface;

a light source arranged on the peripheral side surface of the light guide plate;

The microstructure pattern comprises a first microstructure area and a second microstructure area, wherein the first microstructure area is provided with a plurality of first protrusions, the second microstructure area is provided with a plurality of second protrusions, and the transmissivity of the first microstructure area is smaller than that of the second microstructure area.

2. The lamp head of claim 1, wherein the first microstructure area comprises a plurality of first sub-partitions and the second microstructure area comprises a plurality of second sub-partitions, each of the first sub-partitions being distributed around a plurality of the second sub-partitions.

3. The lamp head of claim 2, wherein the microstructure pattern further comprises a third microstructure area provided with a plurality of third protrusions, the third microstructure area dividing the second microstructure area into the plurality of second sub-divisions;

the transmittance of the third microstructure area is greater than the transmittance of the first microstructure area and less than the transmittance of the second microstructure area.

4. A lamp cap as claimed in claim 3, characterized in that the transmittance of the first microstructure area is 3-8%, the transmittance of the second microstructure area is 85-95%, and the transmittance of the third microstructure area is 15-25%.

5. A lamp cap as claimed in claim 3, wherein a portion of the light from the light source is refracted out of the first surface via the first protrusion, the second protrusion and the third protrusion, such that a football pattern is present on the second surface.

6. The lamp head of claim 1 wherein a portion of the light from the light source is refracted out of the first surface by the first protrusion and the second protrusion such that a panda pattern is presented on the second surface.

7. The lamp head according to claim 1, wherein the first protrusion and the second protrusion have a size of less than 80 μm in a plate surface direction of the light guide plate.

8. A lamp cap as claimed in claim 1, characterized in that the thickness of the light guide plate is 2-5mm.

9. The lamp head of claim 1, wherein the light guide plate comprises a plate body and a coating layer, the coating layer is attached to the plate body, the microstructure pattern is disposed on the coating layer, and the coating layer is a UV cured layer.

10. A lamp comprising a lamp cap as claimed in any one of claims 1-9.