CN216591198U - COB waterproof lamp strip - Google Patents

Abstract

The utility model discloses a COB waterproof lamp strip, which comprises a flexible circuit board, a lamp bead, a light blocking layer and a light diffusion layer, wherein the lamp bead is arranged on the flexible circuit board; the light blocking layer is provided with a containing groove for containing the flexible circuit board and a groove communicated with the containing groove, and the lamp beads are embedded in the groove; the light diffusion layer is arranged on one side, away from the flexible circuit board, of the lamp bead and covers the lamp bead, and the light diffusion layer and the light blocking layer are fixed in a sealing mode. The utility model discloses a COB waterproof lamp strip has reached the luminous effect of line type owing to adopted the light diffusion layer to form the diffusion light emitting area, and because the reflection of light effect on the layer that is in the light makes COB lamp strip possess high light efficiency, simultaneously, light diffusion layer and the sealed fixed connection of layer that is in the light, and flexible line way board and lamp pearl setting make flexible line way board and lamp pearl and outside insulating between the two to COB waterproof lamp strip's water-proof effects has been improved.

Description

COB waterproof lamp strip

Technical Field

The utility model relates to a LED lamp strip field especially relates to a COB waterproof lamp strip.

Background

At present, the light emitting surface of the COB light bar is a linear layer, and compared with a common light bead type light bar, the light emitting surface of the COB light bar is uniform and very much linear and has no light spot, so that the COB light bar is widely applied to various decorative lighting scenes. Most COB lamp strips adopt a flexible circuit board as a substrate in the current market, flip LED chips are die-bonded on the flexible circuit board through solder paste or silver paste, silica gel mixed with fluorescent powder is dripped above the chips, and a light-emitting surface is formed after curing. Under the global environment concerned about energy conservation and emission reduction, higher lighting effect requirements are provided for the LED lamp bar, and the traditional structural mode of the COB lamp bar has relative advantages in cost reduction of the LED support, but the light emitting efficiency of the LED is reduced, so that higher lighting effect cannot be obtained; and because the precision problem of some glue processes, the color tolerance is not well controlled and also brings the problem of light color consistency, make this type of COB lamp strip seal glue only in chip region on the flexible circuit board in addition, lead to COB lamp strip's water-proof effects on the low side.

Therefore, there is a need to provide a COB waterproof light bar to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a COB waterproof lamp strip, it is low to aim at solving current COB lamp strip light efficiency, and color tolerance is big, the not good problem of water-proof effects.

In order to achieve the purpose, the COB waterproof lamp strip provided by the utility model comprises a flexible circuit board, a lamp bead, a light blocking layer and a light diffusion layer, wherein the lamp bead is arranged on the flexible circuit board; the light blocking layer is provided with a containing groove for containing the flexible circuit board and a groove communicated with the containing groove, and the lamp beads are embedded in the groove; the light diffusion layer is arranged on one side, away from the flexible circuit board, of the lamp bead and covers the lamp bead, and the light diffusion layer and the light blocking layer are fixed in a sealing mode.

Optionally, the cross section of the light diffusion layer is semicircular, and the plane end of the light diffusion layer is sealed and fixed with the light blocking layer.

Optionally, the light diffusion layer is in a trapezoid shape, and the side surface of the light diffusion layer is fixed to the light blocking layer in a sealing manner.

Optionally, the light diffusion layer is gradually widened towards the side far away from the lamp beads by covering the lamp beads.

Optionally, the light diffusion layer is flush with an upper surface of the light blocking layer.

Optionally, the number of the lamp beads is multiple, and the multiple lamp beads are mounted on the flexible circuit board in an array manner along the length direction of the flexible circuit board.

Optionally, the light diffusion layer is transparent fixed silica gel, and light diffusion particles are mixed in the light diffusion layer.

Optionally, the light blocking layer is filled with a light blocking filling material.

Optionally, the light blocking layer is opaque silica gel.

In the technical scheme of the utility model, when the COB waterproof lamp strip is manufactured, the lamp bead array is distributed on the flexible circuit board, and through a co-extrusion process, one extruder seals and covers the lamp beads with the flexible layer doped with the diffusion powder particles to form a light diffusion layer; the other extruder extrudes the light-blocking flexible layer material to fully coat the flexible circuit board, and the light-blocking flexible layer material and the light diffusion layer form an integrated sealing structure, so that the waterproof level above IP65 is achieved, and higher light efficiency and smaller color tolerance are obtained. The COB lamp strip has the advantages that the light diffusion layer is adopted to form the diffusion light emitting surface, the linear light emitting effect is achieved, and therefore the COB lamp strip is high in light efficiency, meanwhile, the light diffusion layer is fixedly connected with the light blocking layer in a sealing mode, the flexible circuit board and the lamp beads are arranged between the flexible circuit board and the lamp beads and are insulated from the outside, and therefore the waterproof effect of the COB lamp strip is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a sectional view of a COB waterproof light bar according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a structure in which a light blocking layer and a light diffusion layer are connected according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of a light diffusion layer in a trapezoidal configuration according to an embodiment of the present invention;

fig. 4 is a cross-sectional view of the light blocking layer and the trapezoidal light diffusion layer in an embodiment of the present invention.

The reference numbers illustrate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary @ technical staff in the field without creative work belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

The utility model provides a COB waterproof lamp strip aims at solving how to make the COB lamp strip possess high light efficiency and how to improve the water-proof effects of COB lamp strip.

Referring to fig. 1 and 2, the COB waterproof light bar provided by the present invention includes a flexible circuit board 1, a light bead 2, a light blocking layer 3 and a light diffusion layer 4, wherein the light bead 2 is disposed on the flexible circuit board 1; the light blocking layer 3 is provided with an accommodating groove 31 for accommodating the flexible circuit board 1 and a groove 32 communicated with the accommodating groove 31, and the lamp bead 2 is embedded in the groove 32; the light diffusion layer 4 is arranged on one side, away from the flexible circuit board 1, of the lamp bead 2 and covers the lamp bead 2, and the light diffusion layer 4 and the light blocking layer 3 are fixed in a sealing mode.

In this embodiment, the flexible circuit board 1 is a long strip, when the COB waterproof light bar is manufactured, a plurality of light beads 2 are distributed in the flexible circuit board 1 in an array manner, and the light diffusion layer 4 is formed by sealing and covering the light beads 2 with a flexible layer doped with diffusion powder particles through a co-extrusion process by using one extruder; another extruder extrudes the flexible layer material that is in the light that is blocked and carries out full cladding to flexible line way board 1, forms integrative seal structure with light diffusion layer 4, reaches waterproof level more than IP65, owing to adopted light diffusion layer 4 to form the diffusion light emitting area, has reached the luminous effect of line type, and makes COB lamp strip possess high light efficiency owing to the reflection of light effect on layer 3 that is in the light. Meanwhile, the light diffusion layer 4 and the light blocking layer directly wrap the flexible circuit board 1 and the lamp beads 2 through an extruder, so that the problem of large color difference caused by dispensing is solved. Make the waterproof lamp strip of COB possess the little advantage of colour difference. Specifically, owing to adopted light diffusion layer 4 to form the diffusion light emitting area, reached the luminous effect of line type, simultaneously, light diffusion layer 4 and the sealed fixed connection of layer 3 that is in the light, and flexible line way board 1 and lamp pearl 2 set up between the two and make flexible line way board and lamp pearl 2 and external insulation to the water-proof effects of COB lamp strip has been improved.

In one embodiment, the cross section of the light diffusion layer 4 is semicircular, and the planar end of the light diffusion layer 4 is sealed and fixed with the light blocking layer 3. Specifically, the cross-section semicircular in shape of light diffusion layer 4 sets up, increases light diffusion layer 4's structural strength, improves compressive strength, extension practical life. Meanwhile, the arc-shaped structure is arranged, so that light diffusion is facilitated.

Referring to fig. 3 and 4, in a further embodiment, the light diffusion layer 4 is trapezoidal in cross section, and the side surface of the light diffusion layer 4 is sealed and fixed with the light blocking layer 3. Specifically, the cross section of the light diffusion layer 4 is trapezoidal, the side face of the light diffusion layer 4 is sealed and fixed with the light blocking layer 3, and the upper surface of the light diffusion layer 4 is flush with the upper surface of the light blocking layer 3.

Further, the light diffusion layer 4 is by closing 2 one sides of lamp pearl to keeping away from 2 one side width grow gradually of lamp pearl by the lid. In this embodiment light diffusion layer 4 closes 2 one sides of lamp pearl to keeping away from 2 a radius grow gradually by the lid for light diffusion layer 4 forms the inverted cone post, is favorable to the diffusion of light.

Further, the light diffusion layer 4 is flush with the upper surface of the light blocking layer 3. In this embodiment, with light diffusion layer 4 with the upper surface parallel and level of layer 3 that is in the light sets up, makes the waterproof lamp strip aesthetic property of COB stronger on the one hand, and on the other hand makes light diffusion layer 4 and layer 3 that is in the light fix more firmly.

Furthermore, the quantity of the lamp beads 2 is multiple, and the multiple lamp beads 2 are attached to the flexible circuit board in an array mode. In the embodiment, the plurality of lamp beads 2 can improve the luminous intensity,

further, the light diffusion layer 4 is transparent fixed silica gel, and light diffusion particles are mixed in the light diffusion layer 4. The utility model discloses in, mix light diffusion powder particle in the flexible layer, it is even to open and mill. After being extruded by an extruder, the LED lamp is coated above the lamp beads 2 to form a diffused light-emitting surface, so that a linear light-emitting effect is achieved.

Further, the light blocking layer 3 is filled with a light blocking filling material. In this embodiment, a light-shielding filling material is mixed into the flexible layer, and after the mixture is milled uniformly, the mixture is extruded by another extruder to completely cover the flexible wiring board 1, and the flexible wiring board is joined to the light-emitting surface to form an integral sealing structure, so that the flexible wiring board is insulated from the outside. Specifically, the shading filling material can be titanium dioxide and is used for forming a shading surface.

Further, the light-blocking layer 3 is opaque silica gel. Specifically, the light blocking layer is white opaque silica gel, and may also be black opaque silica gel or other colors.

Further, the lamp beads 2 are blue light LED lamp beads 2. In other embodiments, the lamp beads 2 may also be lamp beads of other colors.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims (9)

1. The utility model provides a waterproof lamp strip of COB, its characterized in that includes:

the flexible circuit board is in a strip shape;

the lamp beads are arranged on the flexible circuit board;

the light blocking layer is provided with a containing groove for containing the flexible circuit board and a groove communicated with the containing groove, and the lamp beads are embedded in the groove;

the light diffusion layer is arranged on one side, away from the flexible circuit board, of the lamp bead and covers the lamp bead, and the light diffusion layer and the light blocking layer are fixed in a sealing mode.

2. The COB waterproof light bar of claim 1, wherein the cross section of the light diffusion layer is semicircular, and the plane end of the light diffusion layer is fixed with the light blocking layer in a sealing manner.

3. The COB waterproof light bar of claim 1, wherein the light diffusion layer is trapezoidal, and the side face of the light diffusion layer is fixed with the light blocking layer in a sealing manner.

4. The COB waterproof light bar of claim 3, wherein the light diffusion layer is gradually widened from the side of covering the lamp beads to the side of being away from the lamp beads.

5. The COB waterproof light bar of claim 4, wherein the upper surface of the light diffusion layer is flush with the upper surface of the light blocking layer.

6. The COB waterproof light bar of claim 1, wherein the number of the light beads is multiple, and the multiple light beads are attached to the flexible circuit board in an array manner along the length direction of the flexible circuit board.

7. The COB waterproof light bar of claim 1, wherein the light diffusion layer is transparent solid silica gel, and light diffusion particles are mixed in the light diffusion layer.

8. The COB waterproof light bar of claim 1, wherein the light blocking layer is filled with a light blocking filling material.

9. The COB waterproof light bar of claim 8, wherein the light blocking layer is opaque silica gel.

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