CN210372914U - LED light distribution structure, light source module and lamp - Google Patents

Abstract

The embodiment of the application discloses LED grading structure, light source module and lamps and lanterns. The LED light distribution structure comprises an annular light distribution element and a plurality of LED chips; the annular light distribution element is provided with an annular light source cavity, and the light source cavity is provided with an annular center and a central line which annularly surrounds the annular center; the LED light source comprises a light source cavity, a plurality of LED chips and a light source module, wherein the LED chips are annularly arranged in the light source cavity and comprise LEDs and chip substrates, and the LEDs are arranged on the chip substrates; the LEDs on all the LED chips are uniformly distributed along the annular row wiring, the annular row wiring and the central line are distributed in a concentric ring mode, and the annular distribution line is located on the inner side or the outer side of the central line. The light source module comprises a light source plate and an LED light distribution structure; the LED chips are arranged on the light source board, and the annular light distribution element is covered on the light source board. The lamp comprises a lamp body and at least one light source module, and the light source module is arranged on the lamp body. The LED light distribution structure, the light source module and the lamp provided by the embodiment of the application can greatly simplify the structure.

Description

LED light distribution structure, light source module and lamp

Technical Field

The application relates to the technical field of inductor manufacturing, in particular to an LED light distribution structure, a light source module and a lamp.

Background

The lamp is an indispensable lighting device in people's life, and along with the development of society, the function of lamps and lanterns has also developed more functions such as decoration, rendering gradually from single indoor lighting, constantly richened people's living environment.

With the advance of technology, the light emitting elements of modern lamps have gradually separated from filaments and incandescent lamps, and LEDs (light emitting diodes) are generally adopted as the light emitting elements. In order to facilitate the assembly of lamp manufacturers, the LED manufacturers usually set one or more LEDs on a small chip substrate to form an LED chip, and the lamp manufacturers only need to attach the LED chip to the light source board of the lamp to connect the LED to the circuit.

Because the LED emits light in a spherical shape, the light-emitting angle is fixed, and the lighting effect is single. In order to make the lamp exhibit the required illumination effects such as illumination angle, light condensation degree, etc., the related art generally arranges a light element on the LED to distribute light. The early light distribution element is usually a single light distribution element, that is, each LED or LED chip has an independent rotary light distribution element, and the LED chip is located at the center of the rotary light distribution element, so that the light spot is circular. When the light-emitting angle needs to be adjusted, there are two ways, one way is to directly change the light distribution configuration of the light distribution element, and this way is extremely costly. In order to save cost, the light emitting angle can be adjusted on the premise of not changing the light distribution element, and the adjustment can be realized by changing the distance (Z-axis distance) between the LED chip and the light distribution element.

Annular light distribution elements are gradually developed in the later stage, and the LED chips which are annularly distributed can be uniformly distributed through one light distribution element, so that circular light spots can be formed. Considering that each LED chip can be uniformly distributed by the annular light distribution element, the LED chip is usually disposed at a central line of a light source cavity of the annular light distribution element. For such an annular light distribution element, when the light emitting angle is to be adjusted without changing the light distribution configuration of the light distribution element, the above-mentioned manner of changing the distance (Z-axis distance) between the LED chip and the light distribution element is also commonly used at present.

However, although the above-mentioned angle adjustment method does not require changing the light distribution configuration of the light distribution element, it requires a structural member to be additionally disposed between the light source board and the light distribution element to adjust the Z-axis distance, and the structure is still complicated.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an LED grading structure, a light source module and a lamp, which aim to solve the problems.

The embodiment of the application adopts the following technical scheme:

in a first aspect, an embodiment of the present application provides an LED light distribution structure, including an annular light distribution element and a plurality of LED chips;

the annular light distribution element is provided with an annular light source cavity, and the light source cavity is provided with an annular center and a central line annularly surrounding the annular center;

the LED chips are annularly arranged in the light source cavity, each LED chip comprises an LED and a chip substrate, and the LEDs are arranged on the chip substrates;

the LEDs on all the LED chips are uniformly distributed along a ring-shaped row wiring, the ring-shaped row wiring and the central line are distributed in a concentric ring mode, and the ring-shaped distribution line is located on the inner side or the outer side of the central line.

Optionally, in the above LED light distribution structure, the chip substrate has a center, and the LED is located at the center or not.

Optionally, in the above LED light distribution structure, the LED is not located at the center, and the center of the chip substrate is located on the central line.

Optionally, in the above LED light distribution structure, the center of the chip substrate is located inside or outside the central line.

Optionally, in the above LED light distribution structure, the chip substrate has a transverse axis and a longitudinal axis passing through the center and perpendicular to each other, the transverse axis and the longitudinal axis divide the chip substrate into four quadrants, and at least most of the LEDs are located in one of the quadrants.

Optionally, in the above LED light distribution structure, neither the horizontal axis nor the longitudinal axis is perpendicular to a line connecting the center of the ring to the center.

Optionally, in the above LED light distribution structure, postures of all the LED chips in the circumferential direction with respect to the ring center are the same.

Optionally, in the LED light distribution structure, the LED chip includes a plurality of LEDs, and the plurality of LEDs are all disposed on the chip substrate.

Optionally, in the above LED light distribution structure, the annular light distribution element is an annular refractive lens or an annular total reflection lens.

In a second aspect, an embodiment of the present application provides a light source module, which includes a light source board and the LED light distribution structure;

the LED chips are arranged on the light source board, and the annular light distribution element covers the light source board.

In a third aspect, an embodiment of the present application provides a lamp, which includes a lamp body and at least one light source module, where the light source module is disposed on the lamp body.

The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:

the LED light distribution structure, the light source module and the lamp provided by the embodiment of the application can keep the circular light spot and simultaneously realize the adjustment of the light emitting angle by changing the position of the LED relative to the central line of the light source cavity, and the structure can be greatly simplified due to the fact that the structural member is not required to be additionally arranged between the light source plate and the light distribution element in the manner of adjusting the light emitting angle.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a top assembly view of an LED light distribution structure provided in an embodiment of the present application, wherein the center d is on a center line b, and the LED chips are rotated around the center d to the annular row of wires c1 and c2, which are located outside the center line b;

fig. 2 is a top assembly view of an LED light distribution structure with center d on center line b and circular row wiring c outside center line b according to an embodiment of the present disclosure;

FIG. 3 is a cross-sectional view of FIG. 2;

FIG. 4 is a light distribution graph of the LED light distribution structure provided in FIG. 2;

fig. 5 is a top assembly view of the LED light distribution structure provided by the embodiment of the present application, wherein the center d and the ring-shaped row wiring c are both located inside the center line b;

FIG. 6 is a cross-sectional view of FIG. 5;

FIG. 7 is a light distribution graph of the LED light distribution structure provided in FIG. 5;

fig. 8 is a top assembly view of the LED light distribution structure provided by the embodiment of the present application, wherein the center d and the ring-shaped row wiring c are located outside the center line b;

FIG. 9 is a cross-sectional view of FIG. 8;

FIG. 10 is a light distribution graph of the LED light distribution structure provided in FIG. 8;

fig. 11 is a top assembly view of an LED light distribution structure provided by an embodiment of the present application with center d on centerline b and circular row wiring c located inside centerline b;

FIG. 12 is a cross-sectional view of FIG. 11;

FIG. 13 is a light distribution graph of the LED light distribution structure provided in FIG. 11;

FIG. 14 is a structural view of an LED chip including a plurality of LEDs according to an embodiment of the present disclosure;

fig. 15 shows two postures of the LED chip provided in the embodiment of the present application.

Description of reference numerals:

1-annular light distribution element, 10-light source cavity, 12-light distribution part, 120-light incident surface, 122-light emergent surface, 124-total reflection surface, 2-LED chip, 20-LED and 22-chip substrate;

a-ring center, b-midline, c-ring row wiring, d-center, e-horizontal axis, f-vertical axis.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

The embodiment of the application discloses an LED light distribution structure, as shown in fig. 1 to 15, comprising an annular light distribution element 1 and a plurality of LED chips 2. The annular light distribution element 1 includes an annular light source cavity 10, and the light source cavity 10 has an annular center a and a center line b annularly surrounding the annular center. The annular light distribution element 1 further includes a light distribution portion 12, the light distribution portion 12 is disposed around the light source cavity 10, an interface between the light distribution portion 12 and the light source cavity 10 is a light incident surface 120 of the light distribution portion 12, and light entering the light distribution portion 12 from the light incident surface 120 can be adjusted in a light path by refraction or reflection, and finally emitted from a light emitting surface 122 substantially opposite to the light incident surface 120. In general, the radial cross-section of the light source cavity 10 and the light distribution part 12 is an axisymmetric structure, and the axis perpendicularly intersects with the middle line b. The annular light distribution element in this embodiment may be an annular refractive lens or an annular total reflection lens, and the two lenses are different mainly in the structure of the light distribution part 12. The light distribution part 12 of the annular refraction lens distributes light through the light refraction principle of the concave lens or the convex lens, and the light distribution part 12 of the annular total reflection lens is additionally provided with the total reflection surface 124 on the basis of refraction, so that the light distribution effect different from that of the annular refraction lens can be presented.

The LED chips 2 are annularly arranged in the light source cavity 10, the LED chips 2 comprise LEDs 20 and chip substrates 22, and the LEDs 20 are arranged on the chip substrates 22. The LEDs 20 on all the LED chips 2 are uniformly arranged along a ring-shaped row wiring c, which is arranged concentrically with the center line b, and the ring-shaped row wiring c may be located inside the center line b (see fig. 2, 3, 5, 6, 11, 12) or outside the center line b (see fig. 1, 7, 8) according to the required light-emitting angle. When the light emitting angle needs to be increased, the ring-shaped row wiring c is located inside the central line b, at this time, the light distribution part 12 generates a polarization effect on the light of the LED20, and more light emitted by the LED20 is emitted to the side away from the ring center a by the light distribution part 12, so that the whole LED light distribution structure can have a larger light emitting angle. On the contrary, when the light emitting angle needs to be reduced, the ring-shaped row wiring line c is located outside the center line b, and at this time, more light emitted by the LED20 is emitted to the side facing the ring center a by the light distribution portion 12, so that the whole LED light distribution structure can have a smaller light emitting angle.

Moreover, although the single LED20 is adjusted to be in the environment of the partial light distribution, since the LEDs 20 are all located on the same ring-shaped row wiring c, the partial light distribution effect of each LED20 can be kept consistent, and the overall light emitting effect of all the LEDs 20 can still be ensured to be a circular light spot.

For the light source module realizing the LED light distribution structure, the LED chips 2 of the LED light distribution structure can be directly distributed on the light source board (not shown in the figure), and the annular light distribution element 1 is covered on the light source board, so that the corresponding light distribution effect can be realized, and other structural members do not need to be additionally arranged in the module structure, so that the structure of the light source module can be simplified compared with the adjustment structure in the related art.

In production practice, chip substrate 22 typically has a center d, which may refer to the geometric center of chip substrate 22, when chip substrate 22 is circular, square or other approximate shape. In addition, the center may be a center of a chip substrate in various forms such as a size center, a perpendicular center, and the like. The center d is generally located at the centerline b of the light source cavity 10 in the related art.

In this embodiment, depending on the model of the LED chip 2, the LED20 may or may not be located at the center d. For LED chips 2 of different structures, different structural forms can be used.

As shown in fig. 1, 2, 3, 11 and 12, when the LED20 is not located at the center d of the chip substrate 22, the center d of the chip substrate 22 may be located on the central line b. The LED20 will now be in an off-center position. The LED chip 2 is rotated around the center d, and the LED20 is rotated around the center d, so that the position of the LED20 is adjusted. At this time, the adjustment of the light emitting angle can be realized only by controlling all the LEDs to be in the same annular row wiring c. Referring to fig. 4 and 13, taking the clear 60 deg. projector as an example, the LED selects the OSRAM3030, and the beam angle can be adjusted within the range of 60 deg. (fig. 4) to 86 deg. (fig. 13) by rotating the LED chip 2 about the center d.

When the LED20 is located at the center d of the chip substrate 22, the position of the whole LED chip 2 can be directly adjusted, so that the center d of the chip substrate 22 is located at the inner side or the outer side of the central line b, the original posture of the LED chip 2 is kept unchanged, and the position of the LED20 can still be adjusted. Also, this adjustment may be applied to the case where the LED20 is not located at the center d of the chip substrate 22 (see fig. 2 to 10). Referring to fig. 4, 7 and 10, also taking the clear 60 ° projector as an example, the LED selection OSRAM3030, the beam angle can be adjusted within a range of 54 ° (fig. 10) to 70 ° (fig. 7) by adjusting the position of the LED chip 2 in a posture in which the LEDs 20 on the LED chip 2 are all on the side of the chip substrate 22 away from the center d.

By the two adjustment modes, the adjustment of the beam angle in the range of 54-86 degrees can be realized. In other embodiments, the two adjustment manners may be applied to the LED chip 2 where the LED20 is not located at the center d of the chip substrate 22, that is, on the one hand, the center of the chip substrate 22 is changed to be located inside or outside the center line b, and on the other hand, the position of the LED20 is further changed by rotating the LED chip 2 around the center d. This may be desirable to achieve greater angular adjustment.

In order to adjust or rotate the position of the LED chip 2, it is usually necessary to adjust the position or posture of the pad on the light source board corresponding to the LED chip 2 to be consistent with the LED chip 2. And under some circumstances, because the circuit arrangement restriction on the light source board, probably the light source board can't correspond the adjustment that adopts single adjustment mode to carry out the pad, and the scheme of using two kinds of adjustment modes simultaneously has then given more wiring selections of light source board, is favorable to the light source board to rationally lay wire, reduces the wiring and the light source board processing degree of difficulty.

With the adjustment manner of rotating the LED chip 2 about the center d as an axis, the LED20 can be rotated clockwise to be in the ring-shaped row wiring c or counterclockwise to be in the ring-shaped row wiring c in most cases due to the difference in the rotation direction, thereby forming two different postures (see fig. 15). Although the distance between the LED20 and the center line a or the center line b is the same in the two postures, the positions of the light spots formed by the LEDs 20 are shifted to some extent due to the difference in position in the circumferential direction of the ring. These shifts may cause an uneven brightness distribution of the entire spot. Therefore, in order to make the luminance distribution of the light spot uniform, it is preferable in this embodiment that the postures of all the LED chips 2 with respect to the ring center a in the circumferential direction are uniform. This enables all the LEDs 20 to move the same distance in the same direction in the circumferential direction while changing the position of the LEDs 20 with respect to the center a or the center line b, ensuring that the intervals do not change, thereby ensuring uniform distribution of brightness.

The adjustment method of the present embodiment is more suitable for the LED chip 2 having the following structure. As shown in fig. 14, the chip substrate 22 of the LED chip 2 has a horizontal axis e and a vertical axis f that are perpendicular to each other and cross the center d, the horizontal axis e and the vertical axis f divide the chip substrate 22 into four quadrants, and the number of the LEDs 20 included in the LED chip 2 may be only one or may include a plurality of LEDs at the same time. Either way, for the LEDs 20 as a whole, at least a majority of the LEDs 20 are in one of the quadrants, and possibly a minority of the LEDs 20 are in adjacent, even opposite, other quadrants. Such LED chips 2 may be referenced to a horizontal axis e and a vertical axis f, which may further facilitate adjustment of the position of the LED20 by a technician. As shown in fig. 1, in some embodiments, the horizontal axis e and the vertical axis f may not be perpendicular to the line connecting the ring center a to the center d, but may be at an angle (see fig. 1).

When a plurality of LEDs 20 are contained in the LED chip 2, the LEDs 20 may be located in the same ring-shaped row wiring line c, but it is more likely that the LEDs 20 located at the same position are located in the same ring-shaped row wiring line c, and the LEDs 20 located at different positions are respectively located in different ring-shaped row wiring lines c, thereby forming a plurality of ring-shaped row wiring lines c1, c 2.

The light source module provided by the embodiment can be arranged on the lamp body when being arranged inside the lamp. And according to different light efficiency requirements, a plurality of light source modules can be arranged in the same lamp in a planar array form or a concentric annular form. The light source plates of the light source modules can be independent of each other or integrated into a whole.

To sum up, the LED light distribution structure, the light source module and the lamp provided by the embodiment of the application can greatly simplify the structure.

In the embodiments of the present application, the difference between the embodiments is described in detail, and different optimization features between the embodiments can be combined to form a better embodiment as long as the differences are not contradictory, and further description is omitted here in view of brevity of the text.

The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (11)

1. An LED light distribution structure is characterized by comprising an annular light distribution element and a plurality of LED chips;

the annular light distribution element is provided with an annular light source cavity, and the light source cavity is provided with an annular center and a central line annularly surrounding the annular center;

the LED chips are annularly arranged in the light source cavity, each LED chip comprises an LED and a chip substrate, and the LEDs are arranged on the chip substrates;

the LEDs on all the LED chips are uniformly distributed along a ring-shaped row wiring, the ring-shaped row wiring and the central line are distributed in a concentric ring mode, and the ring-shaped distribution line is located on the inner side or the outer side of the central line.

2. The LED light distribution structure of claim 1, wherein the chip substrate has a center, and the LED is at the center or not.

3. The LED light distribution structure of claim 2 wherein the LED is not at the center and the center of the chip substrate is on the centerline.

4. The LED light distribution structure of claim 2, wherein the center of the chip substrate is inside or outside the centerline.

5. The LED light distribution structure of claim 3 or 4, wherein the chip substrate has a transverse axis and a longitudinal axis passing through the center and perpendicular to each other, the transverse axis and the longitudinal axis dividing the chip substrate into four quadrants, at least a majority of the LEDs being in one of the quadrants.

6. The LED light distribution structure of claim 5, wherein neither the transverse axis nor the longitudinal axis is perpendicular to a line connecting the center of the ring to the center.

7. The LED light distribution structure according to any one of claims 1 to 4, wherein all the LED chips are uniformly oriented with respect to the ring center in the circumferential direction.

8. The LED light distribution structure according to any one of claims 1 to 4, wherein the LED chip comprises a plurality of LEDs, and the plurality of LEDs are all arranged on the chip substrate.

9. The LED light distribution structure according to any one of claims 1 to 4, wherein the annular light distribution element is an annular refractive lens or an annular total reflection lens.

10. A light source module, comprising a light source board and the LED light distribution structure of any one of claims 1 to 9;

the LED chips are arranged on the light source board, and the annular light distribution element covers the light source board.

11. A lamp comprising a lamp body and at least one light source module as claimed in claim 10, wherein the light source module is disposed on the lamp body.

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