CN110762425A - A light engine and LED lamp - Google Patents

Abstract

The present invention discloses a light engine and an LED lamp, wherein the light engine comprises an LED module, an inner cover, a positioning column and a diffusion cover arranged in sequence from the inside to the outside, the LED module is fixed in the inner cover, and the inner cover is fixed to the diffusion cover by the positioning column. The light engine proposed by the present invention fixes the LED module in the inner cover and fixes the inner cover to the diffusion cover by the positioning column, thereby achieving the fixation of the LED module and the inner cover, and improving the light uniformity of the light engine.

Description

A light engine and LED lamp

technical field

The invention relates to the field of lighting equipment processing, in particular to a light engine and an LED lamp.

Background technique

Compared with traditional light sources, light emitting diodes (LEDs) have the advantages of higher luminous efficiency, low radiation, low power consumption, long life, low driving voltage, fast startup, environmental protection, shock resistance and pressure resistance, and miniaturization of lamps. Lighting equipment as a fluorescent light source is currently widely used. At present, in LED lamps, light engines directly affect their lighting effects. Therefore, light engines are one of the most important components in LED lamps.

The existing light engine usually includes an LED module and an inner cover. The inner cover is arranged outside the LED module, and the light emitted by the LED module is emitted through the inner cover. The LED module and the inner cover are usually co-extruded or post-processing. assembled. The LED module and the inner cover in the later assembled form are easily biased to one side of the inner cover due to the influence of its own gravity, thus affecting the uniform light output effect of the actual light engine.

In view of this, the present invention is proposed.

SUMMARY OF THE INVENTION

The invention provides a light engine and an LED lamp, which solves the problem of fixing the LED module, thereby improving the light output uniformity of the light engine.

As conceived above, the present invention adopts the following technical solutions:

A light engine includes an LED module, an inner cover, a positioning column and a diffusion cover sequentially arranged from the inside to the outside, the LED module is fixed in the inner cover, and the inner cover is connected to the inner cover through the positioning column. The diffuser cover is fixed.

Optionally, the LED module is arranged in the center of the inner cover, the inner cover and the diffusion cover are arranged coaxially, and the axial lengths of the inner cover and the diffusion cover are equal.

Optionally, the LED module includes a substrate and LED lamp beads, the LED lamp beads are mounted on the substrate, and both ends of the substrate are fixed to the inner cover.

Optionally, the LED lamp beads are packaged in CSP.

Optionally, there are two substrates, and the two substrates are attached to one side on which the LED lamp beads are not installed.

Optionally, the inner cover has an annular structure, and the inner surface of the inner cover is provided with a plurality of first bar-shaped saw teeth, and the plurality of the first bar-shaped saw teeth are closely distributed in sequence and circumferentially, and both ends of the base plate are The part is clamped between two adjacent first strip saw teeth.

Optionally, the outer surface of the inner cover is provided with a plurality of second bar-shaped serrations, the plurality of second bar-shaped serrations are sequentially distributed closely circumferentially, and one end of the positioning column is fixed on one of the second bar-shaped teeth. The serrations are on or between two adjacent second strip serrations, and the other end of the positioning column is fixed on the inner surface of the diffuser cover.

Optionally, the positioning pillars are provided in multiples and the multiple positioning pillars are evenly distributed along the circumference of the outer surface of the inner cover.

Optionally, the positioning column is made of transparent material.

An LED lamp includes the light engine according to any one of the above.

The beneficial effects of the present invention

In the light engine and the LED lamp provided by the present invention, the LED module and the inner cover are fixed by fixing the LED module in the inner cover, and further fixing the inner cover and the diffusion cover with positioning posts, thereby realizing the fixing of the LED module and the inner cover, and improving the light The uniformity of the light output of the engine.

Description of drawings

1 is a front view of a light engine provided by a specific embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a light engine provided by a specific embodiment of the present invention.

in

1. LED module; 11. Substrate; 12. LED lamp beads; 2. Inner cover; 21. First strip sawtooth; 22. Second strip sawtooth; 3. Positioning column; 4. Diffuser cover.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limiting the invention. Furthermore, the terms "one end" and "the other end" are used for descriptive purposes only and should not be construed to indicate or imply relative importance. Therein, the terms "one end" and "the other end" are two different positions.

Unless otherwise expressly specified and limited, the terms "installed", "connected", "connected" and "fixed" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection; it may be a mechanical connection, or a It can be an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be an internal connection between two elements or an interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

The technical solutions of the present invention are further described below with reference to the accompanying drawings and through specific embodiments.

In order to solve the problem of uneven light output of the LED lamp due to the fact that the LED module 1 inside the light engine is easily deflected to the side of the inner cover 2 due to the influence of its own gravity in actual use of the existing LED lamp, the present invention provides a light engine. 1 and FIG. 2, wherein FIG. 1 is a front view of the light engine provided by the specific embodiment of the present invention, and FIG. 2 is a schematic structural diagram of the light engine provided by the specific embodiment of the present invention. The light engine includes an LED module 1 , an inner cover 2 , a positioning column 3 and a diffuser cover 4 arranged in sequence from the inside to the outside. The LED module 1 is fixed in the inner cover 2 , and the inner cover 2 passes through the positioning column 3 and the diffusion cover. 4 fixed. The LED module 1 is fixed in the inner cover 2, and at the same time the inner cover 2 and the outer diffuser cover 4 are fixed by the positioning column 3, which further realizes the fixing of the LED module 1, so that the LED module 1 is not fixed during the use of the light engine. will be offset, thereby effectively improving the light uniformity of the light engine and the LED lamp.

Preferably, the above-mentioned LED module 1 is fixed to the center of the inner cover 2. Further, the inner cover 2 and the diffuser cover 4 are coaxially arranged, and the inner cover 2 is fixed to the diffuser cover 4 through the positioning column 3, and the inner cover 2 and the diffuser cover 4 are fixed. 4. The axial lengths are equal. By fixing the LED module 1 in the center of the inner cover 2, at the same time, the inner cover 2 is fixed to the diffusion cover 4 through the positioning column 3, and the inner cover 2 and the diffusion cover 4 are coaxially arranged, so that the LED module 1 can be solved. It is easy to be biased to the side of the inner cover 2, and the inner cover 2 is easy to be biased to the side of the diffuser cover 4, which causes the LED module 1 to be biased to the side of the inner cover 2 and/or the diffuser cover 4, resulting in the problem that the actual light output of the light engine and the LED lamp is uneven. The axial lengths of the inner cover 2 and the diffuser cover 4 are equal, which ensures that the light emitted by the LED module 1 first passes through the inner cover 2 and then diffuses out through the diffuser cover 4, which further improves the light output uniformity of the light engine. Optionally, in the actual use of the light engine, the axial ends of the inner cover 2 and the diffuser cover 4 need to be closed to ensure safety and prevent dust from entering the interior.

Preferably, the LED module 1 includes a substrate 11 and LED lamp beads 12 , the LED lamp beads 12 are mounted on the substrate 11 , and both ends of the substrate 11 are fixed to the inner cover 2 . Specifically, the LED lamp beads 12 are light-emitting chips, a circuit is provided on the substrate 11 , and the LED lamp beads 12 are fixed on the surface of the substrate 11 and communicate with the circuit. The number of substrates 11 can be one or two. When the number of substrates 11 is one, the two ends of one substrate 11 are fixed to the inner cover 2. When the number of substrates 11 is two, the two substrates 11 are not installed with LED lamp beads 12. One side is attached to each other and both ends of the two attached substrates 11 are fixed to the inner cover 2 . Alternatively, the two substrates 11 can be attached together by sticking or welding. In this embodiment, as As shown in FIG. 1 , two substrates 11 are provided, and the sides on which the LED lamp beads 12 are not installed are attached to each other. This arrangement enables the LED module 1 to emit light from all angles as much as possible. Further, the LED lamp bead 12 on each substrate 11 can be set as one or a plurality of LED lamp beads 12. When the LED lamp bead 12 is set as one, it is located in the center of the surface of each substrate 11. When the LED lamp bead 12 is set as one When the number 12 is set to be multiple, the plurality of LED lamp beads 12 are evenly distributed at equal intervals along the length direction of each substrate 11, and the uniform distribution of the multiple LED lamp beads 12 on the substrate 11 makes the light output of the light engine more uniform. In an example, one LED lamp bead 12 is provided on each of the two substrates 11 and is located in the center of the substrate 11 .

Optionally, the LED lamp beads 12 are packaged in a CSP (Chip Scale Package, chip scale package). Specifically, the LED lamp beads 12 are first flipped on the substrate 11, and the surrounding area is made of silicone phosphors. At present, the CSP packages for LEDs on the market mainly have two forms of five-sided light-emitting and single-sided light-emitting. In the embodiment, the LED light source using the CSP packaging technology with five-side light emission can further effectively increase the light-emitting angle of the LED and reduce the generation of the dark side of the LED.

Further, the inner cover 2 has an annular structure, and the inner surface of the inner cover 2 is provided with a plurality of first bar-shaped saw teeth 21, and the plurality of first bar-shaped saw teeth 21 are closely distributed in sequence in the circumferential direction. Between two adjacent first bar-shaped saw teeth 21 . Specifically, as shown in FIG. 1 and FIG. 2 , each first bar-shaped sawtooth 21 is protruded toward the direction of the LED module 1 and each first bar-shaped sawtooth 21 has two symmetrical raised edges. The arrangement enables the light emitted by the LED module 1 to be refracted and reflected by the two raised edges of the first strip-shaped sawtooth 21 and then radiated out, which increases the light scattering and improves the light output uniformity of the light engine. Further, a groove is formed between every two adjacent first strip-shaped saw teeth 21, and both ends of the substrate 11 are respectively caught in the groove. In order to further increase the stability of the substrate 11 stuck in the groove, the The sticking method sticks the end of the substrate 11 on the contact surface with the groove. This arrangement not only effectively fixes the LED module 1 in the inner cover 2, but also does not require additional fixing parts, thus saving the process cost.

Optionally, the outer surface of the inner cover 2 is provided with a plurality of second bar-shaped saw teeth 22, and the plurality of second bar-shaped saw teeth 22 are distributed closely circumferentially in sequence, and one end of the positioning column 3 is fixed on a second bar-shaped saw tooth 22 or The other end of the positioning column 3 is fixed on the inner surface of the diffuser cover 4 between two adjacent second bar-shaped saw teeth 22 . Specifically, as shown in FIG. 1 and FIG. 2 , each of the second strip-shaped teeth 22 is protrudingly disposed along the direction of the diffuser cover 4 and each second strip-shaped teeth 22 has two symmetrical raised sides, and the setting makes The light emitted by the LED module 1 is first refracted and reflected by the two raised edges of the first bar-shaped sawtooth 21, and then refracted and reflected by the raised edges of the second bar-shaped sawtooth 22, and then diffused, which further increases the scattering of light. It can improve the uniformity of light output of the light engine. Optionally, a groove is formed between every two adjacent second strip saw teeth 22, and one end of the positioning post 3 can be fixed on the protrusion of one second strip saw tooth 22, or can be fixed on two adjacent first strip teeth 22. In the groove between the two strip-shaped teeth 22, in this embodiment, one end of the positioning column 3 is fixed on the protrusion of a second strip-shaped teeth 22 and the other end can be fixed to the diffuser cover by sticking or abutting 4 inner surfaces.

Preferably, the positioning pillars 3 are made of transparent material and do not block the light emitted by the LED module 1 ; Specifically, as shown in FIG. 1 and FIG. 2 , in this embodiment, there are four positioning columns 3 , and the four positioning columns 3 are evenly distributed along the circumference of the outer surface of the inner cover 2 , and this arrangement enables the inner cover 2 to be uniformly stressed in the circumferential direction , which is more conducive to the stability of the light engine.

Specifically, as shown in FIG. 2 , in the actual use process, the inner cover 2 and the positioning column 3 can be formed by integral co-extrusion of plastic or silicone material, or the inner cover 2 and the positioning column 3 can be processed separately, and then fixed in the later stage. together; the diffuser cover 4 can be a ring-shaped cover body formed by extrusion of plastic or silica gel. In the later stage, the inner cover 2 and the positioning column 3 are assembled in the diffuser cover 4, and the LED module 1 is assembled and fixed in the inner cover 2. Finally, The axial ends of the inner cover 2 and the diffuser cover 4 are closed. Optionally, in order to further reduce the processing and assembly steps, the inner cover 2, the positioning column 3 and the diffuser cover 4 can be co-extruded at the same time, and then the LED module 1 is assembled and fixed in the inner cover 2 at a later stage, and finally the inner cover 2 and The diffuser cover 4 is closed at both ends in the axial direction. The integrated extrusion process reduces the difficulty of processing, and at the same time increases the sealing performance of the annular cover.

In the light engine and LED lamp provided by the present invention, the LED module 1 is fixed in the inner cover 2, and the inner cover 2 is fixed on the diffuser cover 4 through the positioning column 3, so as to solve the problem of the LED module 1 in the existing light engine. Due to the lack of positioning, due to the influence of its own gravity, it is easy to be biased to the side of the inner cover 2 and/or the diffuser cover 4, thus affecting the problem of uniform light output from the light engine; further, the surface of the inner cover 2 is provided with strip-shaped sawtooth to increase light scattering, thereby effectively improving the light Light uniformity of engine and LED lights.

The above contents are only preferred embodiments of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific embodiments and application scope. limits.

Claims (10)

1. The utility model provides a light engine, its characterized in that includes LED module (1), inner cover (2), reference column (3) and diffusion cover (4) that from interior to exterior set gradually, LED module (1) set firmly in inner cover (2), inner cover (2) pass through reference column (3) with diffusion cover (4) are fixed.

2. A light engine as claimed in claim 1, characterized in that the LED module (1) is arranged in the center of the inner cover (2), the inner cover (2) and the diffuser cover (4) are coaxially arranged and the inner cover (2) and the diffuser cover (4) have equal axial lengths.

3. A light engine as claimed in claim 1, characterized in that the LED module (1) comprises a substrate (11) and LED beads (12), the LED beads (12) are mounted on the substrate (11), and two ends of the substrate (11) are fixed to the inner cover (2).

4. A light engine as recited in claim 3, wherein the LED light beads (12) are packaged in CSP.

5. A light engine as claimed in claim 3 or 4, characterized in that the number of the substrates (11) is two, and the two substrates (11) are attached to the side where the LED lamp beads (12) are not installed.

6. A light engine as claimed in claim 5, characterized in that the inner cover (2) is of a ring-shaped structure, and the inner surface of the inner cover (2) is provided with a plurality of first bar-shaped saw teeth (21), the plurality of first bar-shaped saw teeth (21) are sequentially distributed in a close circumferential direction, and two ends of the base plate (11) are clamped between two adjacent first bar-shaped saw teeth (21).

7. A light engine as claimed in claim 6, characterized in that the outer surface of the inner cover (2) is provided with a plurality of second strip-shaped saw teeth (22), the plurality of second strip-shaped saw teeth (22) are closely distributed circumferentially in sequence, one end of the positioning column (3) is fixed on one second strip-shaped saw tooth (22) or between two adjacent second strip-shaped saw teeth (22), and the other end of the positioning column (3) is fixed on the inner surface of the diffusion cover (4).

8. A light engine as claimed in claim 1, characterized in that the positioning posts (3) are provided in plurality and the positioning posts (3) are evenly distributed circumferentially along the outer surface of the inner cover (2).

9. A light engine as claimed in claim 1, characterized in that the positioning posts (3) are of transparent material.

10. An LED lamp comprising the light engine of any of claims 1-9.

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