WO2020135290A1 - Illumination lamp and light source thereof - Google Patents

Abstract

A light source (10) comprises: a first light-guiding member (100) having a first light-entering end surface (110) and a first light output member (120) respectively arranged at two end portions thereof; a second light-guiding member (200) having a second light-entering end surface (210) and a second light output member (220) respectively arranged at two end portions thereof; a first light source (300), a first light beam emitted therefrom entering the first light-guiding member (100) via the first light-entering end surface (110) and exiting via the first light output member (120) to form illumination light; and a second light source (400), a second light beam emitted therefrom entering the second light-guiding member (200) via the second light-entering end surface (210) and exiting via the second light output member (220) to form illumination light, wherein the first light output member (120) and the second light output member (220) are arranged opposite to and close to each other, and orthographic projections of the first light output member (120) and the second light output member (220) on a plane perpendicular to a central axis of the first light output member (120) or the second light output member (220) at least partially overlap. The light source (10) has favorable heat dissipation performance and a high brightness level.

Description

Illumination lamp and its light source Technical field

This application relates to the field of lighting, in particular to a lighting lamp and its light source.

Background technique

In the current lighting field, such as automotive lighting, halogen lamps are generally used as the light source of automobile headlamps, but halogen lamps have low electrical efficiency and short life, while LED light sources have the characteristics of high photoelectric efficiency and long life, but the existing The luminous characteristics of the LED chip are different from the luminous characteristics of the halogen lamp filament, so the LED chip needs to be made into a light source that imitates the shape of the halogen lamp filament to replace the halogen lamp. However, the optical expansion of the LED light source is large, and the optical power density is small; the imitation filament made of the LED light source is difficult to take into account both the diameter of the filament and the brightness of the exit. When it is applied to the headlight of a car, the brightness cannot meet the demand.

Currently, there are two main ways to make LEDs into filaments. One is to integrate multiple LED chips on both sides of a metal plate, and increase the luminous flux of the light source by increasing the number of LED chips. However, the heat generated by the LED chip is difficult to dissipate. In order to solve the heat dissipation problem of the LED chip, the thickness of the metal plate needs to be increased, which in turn leads to an increase in the distance between the LED chips on the upper and lower sides, making it more defocused when applied to the reflective bowl Obviously, the brightness of the center of the illumination light pattern is still low.

Another way is to make the LED chip with the tapered light guide. The LED chip is set at the end of the light guide with a large diameter. At this time, more LED chips can be set at the light input end of the light guide to improve the brightness of the light source. The light output body is set at The end of the light guide with a small diameter makes the diameter of the light output body small, which is beneficial to reduce the defocusing phenomenon when the reflector bowl receives light. However, if a TIR light guide is used, the light will leak when it is conducted in the tapered light guide, which no longer satisfies the total reflection conditions, resulting in low light utilization and low brightness of the light source. In addition, multiple LED chips are closely arranged in the cone When the shaped light is introduced into the emitting end, the chips generate more heat and the heat between the chips affects each other, making the light source light efficiency lower.

Summary of the invention

The present application provides an illumination lamp and a light source thereof to solve the problems of low brightness and difficult heat dissipation of the existing LED light source.

In order to solve the above technical problems, a technical solution adopted by the present application is to provide a light source, the light source includes: a first light conductor, which includes a first light input end surface and a first light output body respectively provided at two ends; A second light conductor, which includes a second light incident end surface and a second light output body respectively provided at both ends; a first light source for emitting a first light beam, and the first light beam enters the light from the first light The end face enters the first light conductor and exits the first light output body to form illumination light; a second light source is used to emit a second light beam, and the second light beam enters the second light incident end face The second light conductor exits from the second light output body to form illumination light; the top of the end of the first light output body and the top of the end of the second light output body are arranged relatively close to each other, and the first An orthographic projection of a light output body and the second light output body in a vertical plane of the central axis of the first light output body at least partially overlap.

According to a specific embodiment of the present application, the first light incident end face and the second light incident end face have the same orientation.

According to a specific embodiment of the present application, the first light incident end face is opposite to the second light incident end face.

According to a specific embodiment of the present application, the first light output body and the second light output body have the same shape.

According to a specific embodiment of the present application, the shapes of the first light output body and the second light output body are different.

According to a specific embodiment of the present application, the first light output body and the second light output body are cylinders, truncated cones or cones.

According to a specific embodiment of the present application, the end surfaces of the first light output body and the second light output body are respectively provided with reflective layers.

According to a specific embodiment of the present application, a first lens is further provided between the first light source and the first light conductor, and a second lens is further provided between the second light source and the second light conductor .

According to a specific embodiment of the present application, the light output body includes a scattering structure. Wherein, the scattering structure includes: roughening the outer surface of the photoconductor; or microstructuring the outer surface of the photoconductor; or coating a scattering layer on the outer surface of the photoconductor, the scattering layer includes scattering particles and A carrier, the refractive index of the carrier is greater than the refractive index of the light conductor.

According to a specific embodiment of the present application, the light output surface of the light output body is further provided with a fluorescent layer.

According to a specific embodiment of the present application, at least one of the first optical conductor or the second optical conductor is a curved body, and the curved body includes an arc segment and a straight segment.

According to a specific embodiment of the present application, both the first optical conductor and the second optical conductor are straight segments.

To solve the above problem, another technical solution adopted by the present application is to provide an illumination lamp, the illumination lamp including the light source described above.

Different from the prior art, the illuminating lamp and its light source provided by the present application include a first light conductor and a second light conductor, and corresponding first light source and second light source; through the above settings, on the one hand, the first One light source and the second light source can be dissipated separately, the heat dissipation effect is good, and the light efficiency of the light source is high; on the other hand, two light sources and two light guides are used, and the two light sources are respectively coupled into different light guides, and the light coupling efficiency is high, and When the light is TIR conducted in each light guide, it meets total reflection without light leakage, and the light utilization rate is high, so the light source can have both high light coupling efficiency and high light utilization rate, and the light source has high light efficiency; in addition, because the first The top end of the light output body and the end top of the second light output body are arranged relatively close to each other, and the orthographic projections of the first light output body and the second light output body in a vertical plane of the central axis of the first light output body are at least Partial overlap makes the diameter of the light output body of the light source smaller, but the brightness of the light emitted from the light source doubles.

BRIEF DESCRIPTION

In order to more clearly explain the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without paying any creative work, other drawings can also be obtained based on these drawings, in which:

FIG. 1 is a schematic structural diagram of an embodiment of a light source of the present application;

2 is another schematic structural view of an embodiment of a light source according to the present application;

3 is another schematic structural diagram of an embodiment of a light source according to the present application;

4 is another schematic structural view of an embodiment of a light source according to the present application;

5 is another schematic structural diagram of an embodiment of a light source according to the present application;

6 is another schematic structural view of an embodiment of a light source according to this application;

7 is another schematic structural view of an embodiment of a light source according to this application;

8 is another schematic structural diagram of an embodiment of a light source according to the present application;

9 is another schematic structural diagram of an embodiment of a light source according to this application;

10 is another schematic structural view of an embodiment of a light source according to this application;

FIG. 11 is a schematic structural diagram of an embodiment of an illumination lamp of the present application.

detailed description

The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

It should be noted that if there are directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application, the directional indication is only used to explain a specific posture (as shown in the drawings) The relative positional relationship, movements, etc. of the various components below, if the specific posture changes, then the directional indication changes accordingly.

In addition, if there are descriptions related to "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are for descriptive purposes only, and cannot be understood as instructions or hints Its relative importance or implicitly indicates the number of technical features indicated. Thus, the features defined as "first" and "second" may include at least one of the features explicitly or implicitly. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary skilled in the art to achieve, when the combination of technical solutions contradicts each other or cannot be achieved, it should be considered that the combination of such technical solutions does not exist , Nor within the scope of protection required by this application.

Please refer to Figure 1 to Figure 11 together. The present application provides a light source 10 including a first light conductor 100, a second light conductor 200, a first light source 300, and a second light source 400.

The first optical conductor 100 may be a hard material, and its cross-section may be an arc surface, a square surface, a polygonal surface, etc., and any cross-section of the optical conductor 100 has the same size, and the cross-section is preferably an arc surface. The material of the first photoconductor 100 may be, for example, transparent organic glass (PMMA, polymethyl methacrylate) or glass, quartz, sapphire, YAG (yttrium aluminum garnet), or the like.

As shown in FIG. 1, the two ends of the first light conductor 100 are the first light incident end face 110 and the first light output body 120 respectively. The first light output body 120 is disposed outside the first light conductor 110 near the end The surface, and the outer surface is provided with a scattering structure, the scattering structure can be obtained by, for example, roughening the outer surface of the first optical conductor 100; or microstructuring the outer surface of the first optical conductor 100; or The outer surface of a light conductor 100 is coated with a scattering layer, the scattering layer includes scattering particles and a carrier, the refractive index of the carrier is greater than the refractive index of the light conductor, so that it becomes a scattering surface, and light can be output at the first light Body 120 shoots out.

Specifically, if a mixture of titanium oxide powder and glue or glass is applied, the refractive index of the glue or glass is greater than the refractive index of the first light conductor 100, thereby forming the first light output body 120, and the light can be scattered outward to form Illumination light. In other embodiments, scattering objects, such as pores, or other scattering particles with a refractive index different from that of the first photoconductor 100 may be provided inside the first photoconductor 100, such as titanium oxide, silicon dioxide, etc. .

In a specific embodiment, a fluorescent layer may be provided on the outer surface of the first light output body 120. The fluorescent layer may be formed by mixing a phosphor and its carrier. The carrier may be glue, glass, etc. The phosphor may be, for example. It is yellow phosphor, green phosphor, red phosphor, or a mixture of several phosphors, etc. In a specific embodiment, the phosphor is excited to convert the wavelength of light emitted by the light source to form illumination light.

The end surface of the first light conductor 100 is provided with a reflective layer, which may be a diffuse reflective layer or a Gaussian scattering reflective layer, where diffuse reflection means that the light beam is Lambertian distributed after being reflected by the reflective layer, which reflects light The intensity is cosine distribution, and the diffuse reflection material can be a mixture of particles such as TiO ₂ , MgO, BaSO ₄ and glue or glass powder; Gaussian scattering reflection means that the light beam is Gaussian distributed after being reflected by the reflective layer, and the reflected light intensity is Gaussian distributed.

The second photoconductor 200 also includes a second light incident end face 210 and a second light output body 220, and its specific structure is similar to that of the first photoconductor 100, and will not be repeated here.

The first light source 300 is disposed outside the first light conductor 100, and specifically includes at least one LED chip or semiconductor laser chip for emitting a first light beam from the first light incident end face 110 into the first light conductor 100, And conduct TIR conduction in the first optical conductor 100, and since the arbitrary cross-sectional size of the optical conductor 100 is the same, that is, the diameter of the optical conductor 100 remains unchanged, the light can meet the total reflection angle without leakage at the optical conductor 100 until The first light output body 120 emits to form illumination light. Specifically, it is not directly emitted from the end surface, but is emitted on the outer surface of the first light output body 120.

The second light source 400 is disposed outside the second light conductor 200, and specifically includes at least one LED chip or semiconductor laser chip for emitting a second light beam from the second light incident end face 210 into the second light conductor 200, And conduct TIR conduction in the second light conductor 200, and satisfy the total reflection angle anywhere in the light conductor 200, and no light leakage will occur until it exits on the second light output body 220 provided at the end to form illumination light .

As shown in FIG. 1, the incident directions of the first light beam and the second light beam are the same, the directions of the first light incident end face 110 and the second light incident end face 120 are the same, and the plane and the first The plane where the two light incident end faces are overlapped. In other cases, the plane where the first light incident end face is located and the plane where the second light incident end face is located may not overlap. The first light source 300 and the second light source 400 may be arranged side by side according to specific conditions Setting or staggering the settings before and after, to facilitate subsequent installation, etc.

In this embodiment, the first light output body 120 and the second light output body 220 together constitute the light output body of the light source 10, and the first light output body 120 and the second light output body 220 are disposed close to each other, that is, their The end surfaces of the first light output body 120 and the second light output body 220 are kept relatively arranged within a certain distance, which may be a small distance, and further may be against each other.

Specifically, the distance between the top end of the first light output body 120 and the top end of the second light output body 220 is less than or equal to 0.5 mm, and may specifically be 0.5 mm, 0.4 mm, 0.1 mm, and so on.

At least one of the first photoconductor 100 and the second photoconductor 200 is a curved body, which includes an arc segment and a straight segment.

As shown in FIG. 2, in a specific embodiment, the second photoconductor 200 may be a curved body, which includes a first straight section 230 and an arc-shaped section 240 and a second straight section 250, and the first photoconductor 100 may be a straight section , Which includes the third straight section 130. One end of the first straight section 230 is provided with the first light incident end surface 210, and the other end of the second straight section 250 is smoothly connected to one end of the second straight section 250 through the arc section 240, and the other end of the second straight section 250 is provided with First light output body 220. The first straight section 230 is parallel to the second straight section 250, and the arc section 240 preferably includes two circular arc sections, so that the second light beam can meet the total internal reflection when it is conducted in the second optical conductor 200, and the curvature There are certain requirements to make the light meet the angle of total reflection without loss.

The third straight section 130 of the first optical conductor 100 is parallel to the first straight section 230, that is, the first light output body 120 and the second light output body 220 are parallel, one end of which is the first light incident end face 110, and the other end is provided There is a first light output body 120, and the orthographic projections of the first light output body 120 and the second light output body 220 in a plane perpendicular to the central axis of the first light output body or the second light output body at least partially overlap.

In a specific application scenario, the light emitted by the first light source 300 and the second light source 400 enter the first light conductor 100 and the second light conductor 200 respectively, and pass through the first light output body 120 and the second light output body 220 Emitted to form illumination light.

In other embodiments, as shown in FIG. 3, the first light conductor 100 and the second light conductor 200 may both be curved bodies, and the first light output body 120 and the second light output body 220 may be respectively disposed in their arcs. Above the segment, can meet different application needs.

In a specific embodiment, as shown in FIG. 11, the incident directions of the first light beam and the second light beam are opposite, and the orientations of the first light incident end face 610 and the second light incident end face 710 are opposite, and the first light The output body 620 and the second light output body 720 are also relatively close to each other, and the first light output body 620 and the second light output body 720 are in a plane perpendicular to the central axis of the first light output body 620 or the second light output body 720 The orthographic projections within at least partially overlap. Correspondingly, both the first light conductor 600 and the second light conductor 700 are straight bodies, and are arranged oppositely.

The light source 10 provided in the above embodiment has the following advantages.

First, since there is a certain distance between the first light source 300 and the second light source 400, and independent heat dissipation is possible, the heat dissipation performance of the entire light source 10 is good, and the light efficiency of the light source is high; Second, because two light sources and two are used Light guide, each light source is coupled with a light guide with high efficiency, and when the light is TIR conducted in each light guide, it meets total reflection without light leakage. Compared with using a tapered light guide for TIR light guide, the light source 10 uses light The light source 10 can have high light coupling efficiency and high light utilization rate at the same time, so that the light source has high light efficiency; third, because the tops of the ends of the two light output bodies are relatively close to each other, and the first light output body 120 and The orthographic projection of the second light output body 220 in a plane perpendicular to the central axis of the first light output body 120 or the second light output body 220 at least partially overlaps, so that the diameter of the light output body of the light source 10 is small, but The brightness of the beam is doubled.

As shown in FIG. 4, in a specific embodiment, the first light output body 120 is a tapered body, which may specifically be the end of the first light conductor 100 along the main body of the first light conductor 100 at the first light incident end surface 110 The diameter of the main body in the direction of one end gradually becomes smaller, thereby forming a cone, and the outer surface of the cone is further set as a scattering surface, thereby forming the first light output body 120. The second light output body 220 may also be a tapered body, and its formation may also be similar to that of the first light output body 120. The cones of the first light output body 120 and the second light output body 220 are arranged close to each other, and the first light output body 120 and the second light output body 220 are perpendicular to the first light output body 120 or the second light output The orthographic projections in the plane of the central axis of the body 220 at least partially overlap.

As shown in FIG. 5, in another specific embodiment, the first light output body 120 may be a circular truncated body. Specifically, the diameter gradually decreases toward the second light output 220 and forms an end surface. The output body 220 may also be a circular truncated body, the end surface of the first light output body 120 and the end surface of the second light output body 220 are close to each other, and the first light output body 120 and the second light output body 220 are perpendicular to the first light The orthographic projection in the plane of the central axis of the output body 120 or the second light output body 220 at least partially overlaps, and specifically, the end surfaces of the first light output body 120 and the second light output body 200 are both provided with a reflective layer, so that Its light is further scattered on the outer surface passing through its light output body.

Specifically, in the above embodiment, the light output body is adopted as a cone or a truncated cone. Compared with a cylinder, the light output surface is a slanted surface, which is beneficial to the light in the light conductor directly exiting the light output surface, and the light utilization rate is high; And the light output body adopts the shape of a cone or a truncated cone. Compared with the cylindrical body, on the one hand, the diameter of the light output body is gradually reduced, that is, the surface area of the light exit surface is small, and the optical power density of the light exit surface is increased. In terms of light, the light exits directly from the light exit surface without being reflected by the reflective layer at the end surface of the light conductor, and then exits from the light exit surface. The light utilization rate is higher. In specific applications, it can effectively increase the illuminance of the entire lighting area.

As shown in FIG. 6, in another specific embodiment, the first light output body 120 may be a cone, and the second light output body 220 may be a cylinder. The cone bottom of the first light output body 120 and the second light output body The end faces of 220 are close to each other, and the orthographic projections of the first light output body 120 and the second light output body 220 in a plane perpendicular to the central axis of the first light output body 120 or the second light output body 220 at least partially overlap, which The outer surface of the first light output body 120 may be provided as a scattering surface, and the second light output body 220 may be directly formed by providing a scattering surface on the outer surface of the end of the second light conductor 200, and the end of the second light conductor 200 The surface is provided with a reflective layer.

As shown in FIG. 7, in another specific embodiment, the first light output body 120 may be a circular truncated body, and the second light output body 220 may be a cylinder. The end surface of the first light output body 120 and the second light output body 220 Is close to each other, and the orthographic projections of the first light output body 120 and the second light output body 220 in a plane perpendicular to the central axis of the first light output body 120 or the second light output body 220 at least partially overlap. The light output body 220 can be directly formed by providing a scattering surface on the outer surface of the end of the second light conductor 200, and specifically, both the end surfaces of the first light output body 120 and the second light output body 200 are provided with a reflective layer , So that its light is further scattered on the outer surface passing through its light output body.

In the above embodiment, when the first light output body is a cone or a circular truncated cone and the second light output body is a cylindrical body, since the first light output volume is a cone or a truncated cone, the light effect of the first light output volume is Higher, but part of the illuminating light emitted by the first light output body cannot be reflected by the reflective bowl and directly emitted to the outside, which is not conducive to obtaining the expected illumination light pattern; because the second light output body is set as a cylinder, and the first The end surface of the two light conductors is provided with a reflective layer. The reflective layer can reflect part of the light back into the reflective bowl, so that the part of the light can be reflected by the reflective bowl and then emitted to the outside to obtain the expected illumination light pattern and improve light utilization. In addition, the illumination light emitted by the second light output body can be reflected by the reflector bowl and then emitted to the outside. At this time, the light utilization rate of the light source 10 is the highest and the light efficiency is optimal.

As shown in FIG. 8, in a specific embodiment, the light source 10 may further include a first lens 310 and a second lens 410, the first lens 310 is disposed between the first light source 300 and the first light conductor 100, and the second lens 410 is disposed between the second light source 400 and the second photoconductor 200, and can compress the light beam emitted by the light source, so that as much light as possible enters the photoconductor, improving the light utilization rate of the light source, and thereby increasing the brightness of the light source 10.

In a specific embodiment, the wavelengths of the light emitted by the first light source 300 and the second light source 400 may be different, so that the intensity and difference of the emitted light intensity can be controlled by adjusting the driving current of the first light source 300 and the second light source 400 The proportion of the wavelength of light, and further control the optical properties of the illumination light emitted by the first light output body 120 and the second light output body 220, such as brightness, color temperature, color rendering index, etc., for different applications. In another embodiment, the wavelength can also be the same.

As shown in FIG. 9, in a specific embodiment, the first light conductor 100 and the second light conductor 200 are also an integral continuous piece, that is, one light conductor 500, and at this time, the first light output body 120 and the second light output The body 220 may also be an integral type, that is, a continuous light output body 530. The two ends are the first light incident end surface 510 and the second light incident end surface 520, respectively. When the light beam enters the photoconductor 500, it exits the light output body 530 to form illumination light. A diffuse reflection layer 531 is further provided in the middle of the light output body 530, so that the light irradiated to the diffuse reflection layer 531 in the first light beam or the second light beam can be reflected by the diffuse reflection layer 531 and emerge from the outer surface of the light output body 530 to form illumination light. Thereby improving the light exit rate. In this embodiment, the wavelengths of the first light source 300 and the second light source 400 may be the same.

In the above embodiment, the first light source and the second light source may also be blue light, the light output body is provided with a fluorescent layer, and the blue light remotely excites the fluorescent layer to obtain white light. The first light source and the second light source may also be provided with a fluorescent layer on the blue light source, such as a yellow fluorescent layer, and a red fluorescent layer is coated on the position of the light output body to improve the color rendering index of the output light, and the red fluorescent layer is provided on The light output body, far away from the light source and the yellow fluorescent layer, is less affected by its heat and has higher efficiency.

Referring to FIG. 12, the present application also provides a lighting lamp 1 including the light source 10 described in any of the above embodiments. The illumination lamp 1 further includes a reflective bowl 20. Specifically, the reflective bowl 20 may be, for example, a parabolic reflective bowl, an ellipsoidal reflective bowl, or a hyperbolic reflective bowl. The light output body 120 of the light source 10 is located at the focal position of the reflective bowl 20. The bowl 20 is used to reflect the illumination light emitted from the light output body 120 to the outside to realize illumination.

In summary, the illuminating lamp and the light source thereof provided by the present application, by providing the first light conductor and the second light conductor, and the corresponding first light source and second light source, on the one hand, the first light source and the second light source The second light sources are separated, which can dissipate heat independently, and the light efficiency of the light source is higher. On the other hand, by placing the top of the end of the first light output body and the end of the second light output body relatively close to each other, and the first light output body The orthographic projection of the second light output body in a plane perpendicular to the central axis of the first light output body or the second light output body at least partially overlaps, which can make the diameter of the light output body of the light source better, but the brightness of the light emitted by the light source In addition, by changing the shape of the first light output body or the second light output body, the brightness of the light source can be further improved to meet the requirements of good heat dissipation and higher brightness.

The above are only the embodiments of the present application, and do not limit the patent scope of the present application. Any changes to the equivalent structure or equivalent process made by the description and drawings of this application, or used directly or indirectly in other related technologies In the field, the same reason is included in the scope of patent protection of this application.

Claims (12)

A light source, characterized in that the light source includes: A first light conductor, which includes a first light input end surface and a first light output body which are respectively provided at both ends; A second light conductor, which includes a second light incident end face and a second light output body respectively provided at both ends; A first light source for emitting a first light beam, and the first light beam enters the first light conductor from the first light incident end face and exits from the first light output body to form illumination light; A second light source for emitting a second light beam, and the second light beam enters the second light conductor from the second light incident end face and exits from the second light output body to form illumination light; The end of the first light output body and the end of the second light output body are disposed relatively close to each other, and the first light output body and the second light output body are at the center of the first light output body Orthographic projections in a vertical plane of the axis at least partially overlap. The light source according to claim 1, wherein the first light incident end face and the second light incident end face have the same orientation. The light source according to claim 2, wherein at least one of the first light conductor or the second light conductor is a curved body, and the curved body includes an arc segment and a straight segment. The light source according to claim 1, wherein the first light incident end face and the second light incident end face are oriented in opposite directions. The light source according to claim 4, wherein the first light conductor and the second light conductor are straight bodies. The light source according to claim 1, wherein the first light output body and the second light output body have the same shape. The light source according to claim 1, wherein the first light output body and the second light output body have different shapes. The light source according to claim 4 or 5, wherein the first light output body and the second light output body are a cylinder, a truncated cone, or a cone. The light source according to claim 6, wherein the end surfaces of the first light output body and the second light output body are respectively provided with reflective layers. The light source of claim 1, wherein the light output body includes a scattering structure. The light source according to claim 1, wherein the light output surface of the light output body is provided with a fluorescent layer. An illumination lamp, characterized in that the illumination lamp includes the light source of any one of claims 1-11.

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