CN204042570U - With the LED module lamp string of lens - Google Patents

Abstract

The utility model is applicable to technical field of LED illumination, and provide a kind of LED module lamp string with lens, comprise the LED module of multiple serial connection, LED module comprises LED lamp bead, lens and injection-moulded housing; Lens comprise body, and body has end face and lateral surface, and lateral surface comprises curved portions, and the middle part of the end face of body has the groove that an inner surface is taper concave surface, and the bottom surface of body being arranged with an inner surface is paraboloidal cavity.In the utility model, it is by by multiple LED module serial connection, and LED module comprises is located at lens in LED lamp bead and injection-moulded housing, and its injection-moulded housing be by injection moulding integrated molding, and without the need to by putting glue, a baking process, operation is easy, and thus production efficiency is higher; It also passes through on lens, arrange inner surface is that the cavity of concave spherical surface is for holding light source and carrying out first time refraction to light source, arranging inner surface is that the groove of taper concave surface is to carry out second time refraction to light source, thus its not only light emitting anger be exaggerated, also solve the problem of non-uniform light simultaneously.

Description

LED module light string with lens

technical field

The utility model belongs to the technical field of LED lighting, in particular to an LED module lamp string with a lens.

Background technique

In the LED application industry, the application of LED modules in the industry of three-dimensional luminous characters and advertising signs is in full swing and in the ascendant. In the field of three-dimensional luminous characters and advertising light boxes, LED modules have the tendency to completely replace other light sources such as neon lights due to their advantages of economy, weather resistance, energy saving, and simple construction and maintenance.

At present, the production of similar LED module light strings at home and abroad generally involves embedding a circuit board equipped with an LED light source into a preformed housing, and then covering the circuit board area by dispensing. The LED module processed by this method must go through processes such as dispensing and baking, and the process is relatively complicated, so the production efficiency is low; Small, uneven light emitting phenomenon.

Utility model content

The purpose of the utility model is to provide a LED module light string with a lens, aiming to solve the problems of low production efficiency, small light emitting angle and uneven light emission in the prior art.

The utility model is realized as follows: a LED module lamp string with a lens, which includes a plurality of LED modules connected in series through wires, the LED modules include an aluminum substrate, and are electrically connected to the aluminum substrate The LED lamp bead on the upper surface, the lens covering the LED lamp bead and the injection molded housing covered on the aluminum substrate, the upper part of the lens is exposed outside the injection molded housing, and the injection molded housing is After the lens is connected to the aluminum substrate, it is an integral molding structure through injection molding; the lens includes a body, the body has a top surface and an outer surface, the outer surface includes an arc portion, and the arc portion It is formed by an arc rotation of 360 degrees. The middle part of the top surface of the body has a groove whose inner surface is a conical concave surface. The bottom surface of the body is concavely provided with a concave cavity whose inner surface is a paraboloid, and the The central axis of the groove coincides with the central axis of the cavity.

Specifically, the bottom surface of the injection molded housing is flush with the bottom surface of the aluminum substrate.

Specifically, the LED module further includes a heat sink disposed at the bottom of the aluminum substrate.

Further, the heat sink includes a heat dissipation base, and a hollow groove is opened in the middle of the heat dissipation base.

Specifically, the bottom of the heat dissipation base is provided with multiple sets of heat dissipation teeth groups, and the heat dissipation teeth groups include a plurality of heat dissipation teeth arranged side by side at intervals.

Specifically, a plurality of positioning posts protrude downward from the edge of the bottom of the lens body.

Further, a glue leakage groove is provided on the outer wall of the positioning column, and the glue leakage groove penetrates through the positioning column in the axial direction.

Specifically, the arc portion of the outer surface of the lens has a frosted portion, and the frosted portion is located at the lower end of the arc portion.

Further, the bottom ring of the outer surface of the lens body is provided with a protection groove.

Specifically, the outer surface of the lens body also includes a stepped surface that is provided at the bottom of the arc and is continuous with the arc, and the side step of the stepped is the side wall of the protective groove. .

The LED module lamp string with lens provided by the utility model connects a plurality of LED modules in series. The LED module includes a lens covered on the LED lamp bead and an injection molded shell covered on the aluminum substrate. Body, the injection molded shell is integrally formed by injection molding after the lens is connected to the aluminum substrate. Since it does not need to go through dispensing and baking processes, the process is relatively simple, so compared with the existing technology, its production efficiency is greatly improved; It also sets a concave cavity with a concave spherical inner surface on the bottom of the lens body to accommodate the light source, and refracts the light source for the first time, and sets a groove with a tapered concave inner surface on the top of the lens body to accommodate the light source. The second refraction is carried out, so that after the light source has been refracted and reflected twice, not only the luminous angle is enlarged, but also the problem of uneven luminescence caused by the large light intensity near the axis of the light source can be solved, and more uniformity can be achieved Flood light distribution, the light distribution effect is ideal.

Description of drawings

Fig. 1 is a perspective view of the LED module of the LED module light string with lens provided by the embodiment of the present invention;

Fig. 2 is a schematic cross-sectional view of the LED module in Fig. 1;

Fig. 3 is a partial schematic view of the lens of the LED module of Fig. 1;

Fig. 4 is an exploded view of the LED module of Fig. 1;

Fig. 5 is a bottom view of the LED module of Fig. 1;

FIG. 6 is a partial schematic view of the heat sink of the LED module in FIG. 1 .

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in Figures 1 to 3, it is an example diagram of a LED module light string with a lens and a lens of the LED module provided by the embodiment of the utility model, which includes a plurality of LED modules connected in series through wires 10 group 20, wherein the number of LED modules 20 connected in series can be adjusted accordingly according to actual needs, specifically, the LED module 20 includes an aluminum substrate 21, an LED lamp bead 22 electrically connected to the aluminum substrate 21, a cover The lens 23 arranged on the LED lamp bead 22 and the injection molded housing 24 covered on the aluminum substrate 21, the injection molded housing 24 is an integral molding structure through injection molding after the lens 23 is connected to the aluminum substrate 21, which can be used The PC material is integrally injection molded, the upper part of the lens 23 is exposed outside the injection molded housing 24, and the lens 23 is covered on the LED lamp bead 22, which not only refracts and reflects the light emitted by it, obtains a better lighting effect, but also The LED lamp beads can be protected, thereby reducing the dead light rate and prolonging the service life of the LED module.

The lens 23 includes a body 230. The body 230 has a top surface and an outer surface. The outer surface includes an arc-shaped portion 2301. The arc-shaped portion 2301 is formed by rotating an arc 360 degrees, thereby forming an annular arc surface. The top surface of the body 230 The middle part of the main body 230 has a groove 2302 whose inner surface is a conical concave surface as a refracting surface of the light source. The bottom surface of the body 230 is concavely provided with a concave cavity 2304 whose inner surface is a parabolic surface. The inner surface of the concave cavity 2304 can be treated with frosting. , the bottom surface of the body 230 can also be frosted, which can effectively solve the problem of the yellow and blue aperture, the cavity 2304 at the bottom of the body 230 is used to accommodate the light source, and its paraboloid is used as the refraction surface of the light source, so that the light source can pass through the cavity 2304 Refraction and reflection are performed, and the central axis of the groove 2302 coincides with the central axis of the concave cavity 2304 . In this way, after the light with a small luminous angle of the LED lamp bead is refracted by the paraboloid of the concave cavity 2304, the luminous angle is enlarged for the first time, and after being refracted by the conical concave surface of the groove 2302 on the top surface, the luminous angle is enlarged for the second time , after secondary amplification, the strong light near the axis diffuses to the surroundings, and the side of the lens body 230 forms a total reflection light surface, thereby solving the problem that the light intensity of the near axis of the LED light source is relatively large, and can achieve a more uniform Flood light distribution, and high light efficiency utilization rate, the light angle of the lens body 230 can reach 150 degrees to 170 degrees after secondary refraction, so that light distribution with a large light angle can be realized. After the luminous angle is increased, the spacing of LED modules in the application of advertising light boxes can be increased, so that the number of LED modules installed can be reduced, installation man-hours can be saved, and bright spots and dark spots can be eliminated. Spots and dark areas in the corners make the light of the LED light box lighting completely evenly distributed, thereby reducing power consumption and making it more energy-saving.

The LED module lamp string with a lens provided by the utility model is connected in series by connecting a plurality of LED modules 20. The LED module 20 includes an aluminum substrate 21, an LED lamp bead 22 and a cover arranged on the aluminum substrate 21. The lens 23 provided on the LED lamp bead 22 and the injection molded housing 24 covered on the aluminum substrate 21, the injection molded housing 24 is integrally formed by injection molding after the lens 23 is connected to the aluminum substrate 21, because it does not need to pass through the point Glue and baking process, the process is relatively simple, so compared with the prior art, its production efficiency is greatly improved; it is also used to accommodate the light source by setting a concave cavity 2304 with a concave spherical inner surface at the bottom of the lens body 230, and Refract the light source for the first time, and set a groove 2302 with a conical concave inner surface on the top of the lens body 230 to refract the light source for the second time, so that after the light source is refracted and reflected twice, not only the luminous angle is reduced Amplification, and at the same time solve the problem of uneven light emission caused by the large light intensity near the axis of the light source, can achieve a more uniform flood light distribution, and the light distribution effect is ideal.

Further, the bottom surface of the injection molded shell 24 is flush with the bottom surface of the aluminum substrate 21, so that not only the circuit on the aluminum substrate 21 can be protected, but also the bottom surface of the aluminum substrate 21 can be exposed, thereby facilitating heat dissipation.

In order to better dissipate heat from the LED module 20 and enhance its weather resistance, referring to FIG. 4 and FIG. 5 at the same time, a radiator 25 can be provided at the bottom of the aluminum substrate 21. Specifically, the radiator 25 can be made of aluminum. The bottom of the aluminum substrate 21 can be coated with a heat-conducting material and locked to the bottom of the aluminum substrate 21 by screws or other locking elements. The heat sink 25 includes a heat dissipation base 251. Further, in order to obtain a better heat dissipation effect for the LED module 20 A plurality of heat dissipation tooth sets 2511 can be arranged on the bottom of the heat dissipation base 251, and the heat dissipation tooth set 2511 includes a plurality of heat dissipation teeth arranged side by side at intervals.

Furthermore, in order to accelerate the heat dissipation effect of the heat sink, a hollow groove 2512 can be set in the middle of the heat dissipation base 251. In this way, not only the heat dissipation area can be increased, but also the gap between the heat dissipation base 251 and the aluminum substrate 21 can be reduced during the use of the LED module 20. The hollow groove 2512 provided on the heat dissipation base 251 constitutes an air circulation channel, and the cold air can enter the inside of the heat dissipation base 251 at any time, and the heat generated by the LED lamp bead 22 is drawn into the heat dissipation base 251 by the cold air passing through the heat dissipation base at any time. The heat dissipation teeth at the bottom of 251 are brought out of the heat dissipation base 251 after cold and heat exchange, thereby solving the problem of difficult heat dissipation of high-power modules. In this embodiment, there are four groups of heat dissipation teeth groups 2511, and the four groups of heat dissipation teeth groups 2511 are arranged symmetrically in pairs on the bottom of the heat dissipation base 251. The symmetrical arrangement of the heat dissipation teeth groups 2511 can make the heat dissipation base 251 obtain more uniform heat dissipation. Function. Of course, the arrangement of the heat dissipation tooth set 2511 is not limited, and the shape and layout of the hollow groove 2512 can be set according to the actual situation, and the installation of the heat sink 25 can be properly selected according to the power of the LED module.

In order to make the lens 23 easy to be positioned when mounted on the aluminum substrate 21, the edge of the bottom of the lens body 230 is provided with a plurality of positioning posts 2303 (see FIG. 3 ) protruding downwards. The through hole (not shown) opposite to the positioning column 2303 is used, so that the lens 23 can be firmly inserted on the aluminum substrate 21 and thus be stably positioned.

A glue leakage groove 23031 is provided on the outer side wall of the positioning post 2303, and the glue leakage groove 23031 runs through the positioning pillar 2303 in the axial direction. It is firmly connected to the aluminum substrate 21.

There is a frosted portion 23032 on the arc portion 2301 of the outer surface of the lens 23, which serves as a reflective surface of the light source and can further make the refraction and reflection effect of the lens 23 more uniform. Specifically, the frosted portion 23032 is located at the lower end of the arc portion 2301 , that is, the lower part of the arc-shaped part 2301 is frosted so that the lower part of the arc-shaped part 2301 is a frosted surface.

The bottom surface of the lens 23 and the inner surface of the lens cavity 2304 are frosted, which can effectively solve the problem of the yellow basket aperture that is easy to appear in the high-power LED lamp bead 22 .

In order to make the LED module 20 have a better dustproof and waterproof effect, the bottom ring of the outer surface of the lens body 230 is provided with a protective groove 2304, so that even if dust and water enter the injection molded housing 24, they will first accumulate on this surface. In the protection groove 2304, moisture and dust can be prevented from entering the interior of the lens 23.

The outer surface of the lens body 230 also includes a step surface 2305 which is arranged at the bottom of the arc portion 2301 and is arranged continuously with the arc portion 2301. The side step surface of the step portion 2305 is the side wall surface of the protective groove 2304. The setting of the step portion 2305 can be The lens 23 is combined with the injection molded housing 24 more tightly, thereby improving the reliability and structural stability of the lens 23 .

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements or improvements made within the spirit and principles of the present utility model should be included in the utility model. within the scope of protection.

Claims (10)

1. the LED module lamp string with lens, it is characterized in that: comprise multiple LED module be connected in series by wire-connection, described LED module comprises aluminium base, the LED lamp bead be electrically connected on described aluminium base, the injection-moulded housing that is covered on the lens in described LED lamp bead and covers on described aluminium base, described lens top is exposed outside described injection-moulded housing, and described injection-moulded housing is the integrated formed structure by injection mo(u)lding after described lens are connected on described aluminium base; Described lens comprise body, described body has end face and lateral surface, described lateral surface comprises curved portions, described curved portions is formed by an arc rotating 360 degree, the middle part of the end face of described body has the groove that an inner surface is taper concave surface, the bottom surface of described body being arranged with an inner surface is paraboloidal cavity, and the axis of described groove overlaps with the axis of described cavity.

2. the LED module lamp string of band lens as claimed in claim 1, is characterized in that: the bottom surface of described injection-moulded housing is concordant with the bottom surface of described aluminium base.

3. the LED module lamp string of band lens as claimed in claim 1, is characterized in that: described LED module also comprises the radiator be located at bottom described aluminium base.

4. the LED module lamp string of band lens as claimed in claim 3, it is characterized in that: described radiator comprises heat dissipation base, the middle part of described heat dissipation base offers hollow slots.

5. the LED module lamp string of band lens as claimed in claim 4, is characterized in that: the bottom of described heat dissipation base is provided with many group radiation tooth groups, and described radiation tooth group comprises the radiation tooth that multiple spacing side by side is arranged.

6. the LED module lamp string of band lens as claimed in claim 1, is characterized in that: the edge bottom described lens body is convexly equipped with multiple locating dowel downwards.

7. the LED module lamp string of band lens as claimed in claim 6, it is characterized in that: the lateral wall of described locating dowel is provided with Lou glue groove, described leakage glue groove runs through described locating dowel vertically.

8. the LED module lamp string of band lens as claimed in claim 1, it is characterized in that: the curved portions of the lateral surface of described lens has frosted portion, described frosted portion is positioned at the lower end of described curved portions.

9. the LED module lamp string of the band lens as described in any one of claim 1 to 8, is characterized in that: the bottom part ring of the lateral surface of described lens body is provided with protection groove.

10. the LED module lamp string of band lens as claimed in claim 9, it is characterized in that: the lateral surface of described lens body also comprises to be located at bottom described curved portions and to continue the step face arranged with described curved portions, and the offset face of described step face is the side wall surface of described protection groove.