CN219831433U

CN219831433U - Light guide assembly and light-emitting module

Info

Publication number: CN219831433U
Application number: CN202322108526.9U
Authority: CN
Inventors: 吕力; 山海峰; 刘超; 李芮; 周智
Original assignee: Zhejiang Huayuxin Technology Co ltd
Current assignee: Zhejiang Huayuxin Technology Co ltd
Priority date: 2023-08-07
Filing date: 2023-08-07
Publication date: 2023-10-13
Anticipated expiration: 2033-08-07

Abstract

The utility model relates to a light guide assembly and a light emitting module, wherein the light guide assembly comprises a light emitting unit and a light guide column; the light guide column comprises a first light guide body, a second light guide body and a spacing crystal; the spacer crystal is arranged between the first light guide body and the second light guide body; the first light guide body is provided with a first light incident surface, a first light emergent surface and a second light emergent surface; after entering the first light-in surface, the light emitted by the light-emitting unit is reflected by the first light-out surface and the interval crystal and then emitted by the second light-out surface; the second light guide body is provided with a second light incident surface and a third light emergent surface, and light emitted by the light emitting unit is emitted through the third light emergent surface after passing through the second light incident surface. The utility model solves the problems of the prior art that the electronic device has different-surface light-emitting design, the number of the corresponding lamp beads of each light-emitting surface needs to be increased, and the cost is higher, omits the lamp beads which are additionally arranged, has simpler structure, and achieves the effects of more convenient assembly and lower cost.

Description

Light guide assembly and light-emitting module

Technical Field

The present utility model relates to the field of light emitting modules, and more particularly, to a light guide assembly and a light emitting module.

Background

Conventional light guide columns are generally LED direct-projection schemes to perform the light guide function, and even some special IDs are designed to be linear, circular, or even mosaic. But the principle is basically the same. However, some special ID designs, such as different-surface light-emitting designs, such as light-guiding columns with L-shaped corners, have poor light-guiding effect.

Because the light guide of the light itself is linear, for the light guide column with different surface light emission such as L-shaped corner design, a light source is made on the corresponding side of each surface, and the light source is used for providing a light source for the corresponding surface.

Aiming at the problems of the electronic device in the related art that different-surface light emitting designs are needed to increase the number of corresponding lamp beads on each light emitting surface and the cost is high, no effective solution is proposed at present.

Disclosure of Invention

In this embodiment, a light guide assembly and a light emitting module are provided to solve the problem that in the related art, the number of corresponding light beads on each light emitting surface needs to be increased, and the cost is high.

In a first aspect, in this embodiment, there is provided a light guide assembly, including: a light emitting unit and a light guiding column; the light guide column comprises a first light guide body, a second light guide body and a spacing crystal; the spacer crystal is arranged between the first light guide body and the second light guide body; the first light guide body is provided with a first light incident surface, a first light emergent surface and a second light emergent surface, and light emitted by the light emitting unit is emitted through the first light incident surface and the first light emergent surface and the second light emergent surface respectively; the second light guide body is provided with a second light incident surface and a third light emergent surface, and light emitted by the light emitting unit is emitted through the third light emergent surface after passing through the second light incident surface.

In some embodiments, the spacer crystal is a single-sided mirror, and forms an obtuse angle with the second light-emitting surface, so as to reflect part of the light irradiated on the spacer crystal to the second light-emitting surface.

In some embodiments, the first light guide and the second light guide are formed by mixing and injection molding PC material and light scattering powder.

In some of these embodiments, the light-diffusing powder content in the second light-guide is greater than the light-diffusing powder content in the first light-guide.

In some embodiments, the light guide assembly further includes a light diffusion sheet disposed on the first light guide and the second light guide, and the light emitted from the light emitting unit enters the first light guide and the second light guide through the light diffusion sheet.

In some embodiments, the light emitting unit is an LED light bead.

In a second aspect, in this embodiment, there is provided a light emitting module including: the light guide assembly of the first aspect; the accommodating shell is in clearance fit with the light guide column; the light-emitting unit is coupled with the accommodating shell, and light emitted by the light-emitting unit enters from the light-in surface of the light guide column through the accommodating shell and is emitted from the light-out surface of the light guide column.

In some of these embodiments, the housing case has a mounting portion and a light blocking portion, the mounting portion and the light blocking portion being integrally injection molded.

In some embodiments, the light emitting module includes a plurality of the light guide columns, and the plurality of the light guide columns are connected through a connection part; the accommodating shell comprises a plurality of light isolating parts; the light isolation parts and the light guide columns are arranged at intervals, and light transmitted by the light guide columns is not interfered with each other.

In some of these embodiments, the mounting portion is secured to the attachment portion by a hot melt adhesive.

Compared with the related art, the light guide assembly and the light emitting module provided in the embodiment comprise a light emitting unit and a light guide column; the light guide column comprises a first light guide body, a second light guide body and a spacing crystal; the spacer crystal is arranged between the first light guide body and the second light guide body; the first light guide body is provided with a first light incident surface, a first light emergent surface and a second light emergent surface; after entering the first light-in surface, the light emitted by the light-emitting unit is reflected by the first light-out surface and the interval crystal and then emitted by the second light-out surface; the second light guide body is provided with a second light incident surface and a third light emergent surface, and light emitted by the light emitting unit is emitted through the third light emergent surface after passing through the second light incident surface, so that the problem that the electronic device in the related art has different-surface light emitting designs, the number of corresponding lamp beads of each light emitting surface needs to be increased, the cost is high, the additionally arranged lamp beads are omitted, the structure is simpler, the assembly is more convenient, and the cost is lower is achieved.

The details of one or more embodiments of the utility model are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the other features, objects, and advantages of the utility model.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

fig. 1 is a schematic structural diagram of a light guide assembly according to the present embodiment;

fig. 2 is a top view of a light guide module according to the present embodiment;

fig. 3 is a schematic structural view of a housing of the present embodiment;

FIG. 4 is a schematic diagram of a light guide module according to the preferred embodiment;

fig. 5 is a schematic structural diagram of a light guiding column according to the preferred embodiment.

Detailed Description

The present utility model will be described and illustrated with reference to the accompanying drawings and examples for a clearer understanding of the objects, technical solutions and advantages of the present utility model.

Unless defined otherwise, technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terms "a," "an," "the," "these" and similar terms in this utility model are not intended to be limiting in number, but may be singular or plural. The terms "comprising," "including," "having," and any variations thereof, as used herein, are intended to encompass non-exclusive inclusion; for example, a process, method, and system, article, or apparatus that comprises a list of steps or modules (units) is not limited to the list of steps or modules (units), but may include other steps or modules (units) not listed or inherent to such process, method, article, or apparatus. The terms "connected," "coupled," and the like in this disclosure are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The term "plurality" as used herein means two or more. "and/or" describes an association relationship of an association object, meaning that there may be three relationships, e.g., "a and/or B" may mean: a exists alone, A and B exist together, and B exists alone. Typically, the character "/" indicates that the associated object is an "or" relationship. The terms "first," "second," "third," and the like, as referred to in this disclosure, merely distinguish similar objects and do not represent a particular ordering for objects.

Conventional light guide columns are generally LED direct-projection schemes to perform the light guide function, and even some special IDs are designed to be linear, circular, or even mosaic. However, some special ID designs, such as different-surface light-emitting designs, such as light-guiding columns with L-shaped corners, have poor light-guiding effect. The reason is that the light guide with the light itself is linear, and the other direction or the requirement of the luminous surface is difficult to be taken care of. Conventionally, a light source is provided on the opposite side of each surface to match the light source. If the lamp strip is relatively thin as in the above-described scheme, it may be necessary to increase the number of corresponding beads per light-emitting surface to satisfy the light-emitting brightness and uniformity of the lamp strip.

In the present embodiment, a light guide assembly is provided, and in the present embodiment, only one light guide pillar and two light emitting units are shown, it should be understood that the light guide pillar and the light emitting units of the present utility model may be plural, and are not limited thereto. The light guide component provided in this embodiment is built in the DMU product itself, and because of the design limitation of the lamp beads and the structural positions in the PCBA design of the DMU product itself, the requirements of the ID design need to be satisfied, and the functional and appearance requirements are satisfied.

Fig. 1 is a schematic structural diagram of a light guide assembly according to the present embodiment, as shown in fig. 1, the light guide assembly includes: a light emitting unit 10 and a light guiding column 20; the light guide column comprises a first light guide body 21, a second light guide body 22 and a spacing crystal 23; the spacer crystal 23 is disposed between the first light guide and the second light guide.

In this embodiment, the light emitting unit 10 is disposed on the light guiding pillar 20, and the light emitted by the light emitting unit 10 is directly incident on the light incident surface of the light guiding pillar 20 and then emitted through the light emitting surface of the light guiding pillar 20, where the light emitting surface of the light guiding pillar 20 includes a bottom light emitting surface and a side light emitting surface.

Specifically, in this embodiment, taking a rectangular cube of the light guide column 20 as an example, the light guide column 20 is provided with the spacer crystal 23, the light emitting unit 10 is disposed on a circuit board mounted on the outside, the circuit board is disposed on the light guide column 20, the light emitting unit 10 and the light guide column 20 may not be in physical contact, the light emitted by the light emitting unit 10 is directly incident on the light incident surface of the light guide column 20 and then is emitted through the light emitting surface of the light guide column 20, the light emitting surface of the light guide column 20 includes a bottom light emitting surface and a side light emitting surface, and due to the spacer crystal 23 disposed in the light guide column 20, part of the light incident on the spacer crystal 23 is reflected to the side light emitting surface by the spacer crystal 23.

Further, the circuit board may be a printed circuit board (PCB, printed Circuit Board) consisting of an insulating floor, connecting wires and pads for assembling soldered electronic components, having the dual function of a conductive track and an insulating floor. The circuit board is also provided with other electronic components besides the light-emitting unit.

In the present embodiment, the first light guide 21 has a first light incident surface 21-1, a first light emergent surface 21-2 and a second light emergent surface 21-3; after entering the first light-in surface 21-1, the light emitted by the light-emitting unit 10 is reflected by the first light-out surface 21-2 and the spacing crystal 23 and then emitted by the second light-out surface 21-3; the second light guide 22 has a second light incident surface 22-1 and a third light emergent surface 22-2, and the light emitted from the light emitting unit 10 is emitted through the third light emergent surface 22-2 after passing through the second light incident surface 22-1.

Through the first light-emitting surface and through the second light-emitting surface after being reflected by the interval crystal; the second light guide body is provided with a second light incident surface and a third light emergent surface, and light emitted by the light emitting unit is emitted through the third light emergent surface after passing through the second light incident surface, so that the problem that the electronic device in the related art has different-surface light emitting designs, the number of corresponding lamp beads of each light emitting surface needs to be increased, the cost is high, the additionally arranged lamp beads are omitted, the structure is simpler, the assembly is more convenient, and the cost is lower is achieved.

In some embodiments, the spacer crystal 23 is a single-sided mirror, and forms an obtuse angle with the second light-emitting surface 21-3, so as to reflect part of the light impinging on the spacer crystal 23 to the second light-emitting surface 21-3.

In this embodiment, the spacer crystal 23 is a single-sided reflective, the mirror surface of the spacer crystal 23 forms an acute angle with the incident light, and when the light emitted from the light emitting unit 10 irradiates the spacer crystal 23, the light reflected by the spacer crystal 23 can be reflected to the side light emitting surface of the light guiding column 20, i.e. the second light emitting surface 21-3 of the first light guiding body 21.

Preferably, the mirror surface of the spacer crystal 23 forms 135 ° with the second light-emitting surface 21-3, and when the light emitted from the light-emitting unit 10 is incident on the mirror surface of the spacer crystal 23 at 45 °, the spacer crystal 23 reflects the incident light onto the second light-emitting surface 21-3 at a 90 ° angle.

Furthermore, a layer of coating can be coated on the single-sided mirror surface, so that the light reflection efficiency is better. The plating film may be selected from titanium dioxide (TiO ₂ ) Tantalum oxide (Ta) ₂ O ₅ ) Zirconium dioxide (ZrO) ₂ ) Zinc oxide (ZnO), neodymium oxide (Nd) ₂ O ₃ ) Niobium pentoxide (Nb) ₂ O ₅ ) Indium oxide (In) ₂ O ₃ ) Tin oxide (SnO) ₂ ) Antimony oxide (SbO) ₃ ) Hafnium oxide (HfO) ₂ ) Cerium oxide (CeO) ₂ ) Or zinc sulfide (ZnS) such that most of the light irradiated to the spacer crystal 23 is reflected and transmitted in the light guide column 20.

In some of these embodiments, the first light guide 21 and the second light guide 22 are two-shot molded from a PC transparent material and a PC haze transparent material. By adopting the further arrangement, the light guide body is manufactured in a double-color injection molding mode, the PC transparent material with the first color has good light source conductivity, and the PC vaporific transparent material with the second color can increase the uniformity of light.

In some embodiments, the first light guide 21 and the second light guide 22 are injection molded by mixing PC material and light-diffusing powder.

Specifically, the PC material is heated and melted, mixed with the light-scattering powder, poured into a mold, waiting for preliminary presentation of a certain shape, then placed into a spacer crystal 23 until cooling and shaping to form a first portion of the light-guiding column 20, and similarly, the material fused with the PC material and the light-guiding powder is poured into the mold again, cooled to shaping, and injection molding of the light-guiding column 20 is completed.

Further, the PC material may be selected from one of thermoplastic polyurethane, polycarbonate, polymethyl methacrylate, or ethylene terephthalate.

In some of these embodiments, the amount of light diffusing powder in the second light guide 22 is greater than the amount of light diffusing powder in the first light guide 21.

Specifically, the spacer crystal 23 divides the light guide column 20 into a first light guide 21 and a second light guide 22. Wherein the content of the light scattering powder in the second light guide body 22 is larger than that of the light scattering powder in the first light guide body 21; the light-diffusing powder can further enhance the reflection, refraction and scattering effects on the light, the light has larger divergence degree after diffusion, and uniform light emission can be realized only in a shorter optical path, so that the display effect of the light-guiding column 20 is further improved.

In some of these embodiments, the light guide assembly further includes a light diffusion sheet disposed on the first and second light guides 21 and 22, and the light emitted from the light emitting unit 10 enters the first and second light guides 21 and 22 through the light diffusion sheet.

Specifically, the light-scattering sheet may be a transparent silica gel sheet, and the silica gel sheet may uniformly scatter light, so that the light irradiated into the light-guiding column 20 is not too concentrated.

In some of these embodiments, the light emitting unit 10 is an LED light bead.

Specifically, the LED light beads may be one or a combination of white light emitting diode, blue light emitting diode, red light emitting diode, and green light emitting diode.

A light guide module is provided in this embodiment that is adaptable to a circuit board indicator (Circuit Board Indicator). Fig. 2 is a top view of a light guide module according to the present embodiment, as shown in fig. 2, the light guide module includes: the light guide assembly and the accommodating case 2 shown in the foregoing first embodiment; the accommodating housing 2 is in clearance fit with the light guide column 20. The light emitting unit 10 in the light guide assembly is coupled with the accommodating housing 2, and light emitted by the light emitting unit 10 enters from the light incident surface of the light guide column 20 through the accommodating housing 2 and is emitted from the light emitting surface of the light guide column 20.

The material of the housing 2 is, for example, opaque plastic, which can be manufactured by injection molding. The accommodating housing 2 may be light-shielding foam, or may be black rubber, and the surface of the black rubber is rough and black, so that on one hand, light diffused from the light-emitting unit 10 to the side can be absorbed, reflection and refraction of light can be reduced, and the problem of light-string can be solved, and on the other hand, the accommodating housing 2 has elasticity, so that the light-guiding column 20 can be protected.

In some embodiments, the accommodating housing 2 has a light-blocking portion 2-1, and the light-blocking portion 2-1 wraps the light-emitting unit 10, and only the light-incident surface and the light-emitting surface are exposed.

In some of these embodiments, as shown in fig. 3, the accommodating case 2 has a mounting portion 2-2 and a light blocking portion 2-1, and the mounting portion 2-2 and the light blocking portion 2-1 are integrally injection molded.

In some embodiments, the light emitting module includes a plurality of light guide columns 20, and the plurality of light guide columns 20 are connected by a connection portion; the accommodating housing 2 includes a plurality of light-blocking portions 2-1; the light-blocking portions 2-1 are spaced apart from the light-guiding columns 20, and the light transmitted by the light-guiding columns 20 does not interfere with each other.

Specifically, the plurality of light guide columns 20 are connected through the connecting portion to form a solid 'king' shaped radiator tooth sheet structure, and the accommodating housing 2 is in a hollow 'king' shaped structure, wherein the plurality of light isolation portions 2-1 of the accommodating housing 2 and the plurality of light guide columns 20 are arranged at intervals, the light isolation portions 2-1 wrap the light guide columns 20, and only the light incident surface and the light emergent surface of the light guide columns 20 are reserved.

In some of these embodiments, the mounting portion 2-2 is secured to the attachment portion by a hot melt adhesive.

Specifically, the connection portion between the mounting portion 2-2 of the accommodating housing 2 and the light guide column 20 is fixed by hot melt adhesive, so that the accommodating housing 2 is fixed to the light guide column 20.

In some embodiments, the mounting portion 2-2 of the accommodating housing 2 is fixedly connected to the connecting portion of the light guiding column 20 through a clamping connection.

Specifically, the outer surface of the light guiding pillar 20 may be provided with a clamping portion or a clamping groove, and the clamping portion or the clamping groove may be used to clamp the clamping groove or the clamping portion of the accommodating housing 2. The clamping part and the clamping groove can be a dovetail convex part and a dovetail groove or various mortise and tenon structures. However, the present utility model is not limited thereto, the number of the engaging portion and the engaging groove may be at least one, and the engaging portion and the engaging groove may be other shapes of engaging structures, for example, the engaging portion may be a protruding portion structure, the engaging groove may be a groove structure, and the shape and structure are not limited as long as the function of assembling and engaging each other can be achieved.

The present embodiment is described and illustrated below by way of preferred embodiments.

Fig. 4 is a schematic structural diagram of a light guide module according to the preferred embodiment. As shown in fig. 4, the light guide module includes: a light guide post 30, a light shielding sleeve 40, and a light emitting unit 50; as shown in fig. 5, the light guide column 30 is divided into a side light guide part and a bottom light guide part according to the light guide requirement, and the side light guide part and the bottom light guide part are separated by a spacer crystal 33, and the spacer crystal 33 is a single-sided mirror surface. The side light guiding portion is a side light transmitting region 31, and the bottom light guiding portion is a bottom light transmitting region 32.

Specifically, the PC material is heated and melted, mixed with the light-scattering powder, poured into a mold, waiting for preliminary presentation of a certain shape, then placed into the spacer crystal 23 until cooling and shaping to form the bottom light-transmitting region 32, and likewise, the material fused with the PC material and the light-guiding powder is poured into the mold again, cooled to shaping, and injection molding of the side light-transmitting region 31 is completed.

In this embodiment, taking the light guide column 30 including 4 light bars as an example, the light guide column 30 is injection molded by using a transparent PC material, in the process of molding the light guide column 30, the spacer crystals 33 are embedded in advance in the mold, so that the transparent PC material in the bottom light transmission region 32 and the side light transmission region 31 can be doped with light scattering powder with different specific gravities, the light loss is small because the light is direct, the light scattering powder with larger gram weight can be added, 3-5 g is recommended, and a smaller amount of light scattering powder, such as about 0-2 g, can be doped in the PC material in the side light transmission region 31. The specific actual weight is tested and selected according to the light source intensity of the light emitting unit 50 and the actual light guiding effect.

In this embodiment, the transparent PC material of the light guide column may be, for example, transparent silica gel or plastic, and is preferably made of a material capable of guiding light. Specifically, the light guide column may use self-adhesive silica gel, or an interface adhesive (Primer) is coated on the inner wall of the light shielding sleeve, and in the process of embedding and injecting, the light guide column is tightly attached to the inner wall surface of the channel of the light shielding sleeve, so that the adhesive force between the light guide column and the light shielding sleeve is improved.

In this embodiment, the spacer crystal 33 may be a mirror surface reflecting light from one side, and the light emitted from the light emitting unit 50 is reflected to the side light transmitting region through a 90 degree angle. In the process of actually adjusting the display brightness, the actual display effect can be adjusted by adjusting the current of the two light emitting units 50 or the specification of the light emitting units 50 and adjusting the light source size, so as to achieve the design effect of the corner type light guide column 30.

Specifically, the two light emitting units 50 may be identical or different in shape and structure, and may be the same color or different colors.

In the present embodiment, the light emitting unit 50 may be an LED light source.

In particular, the light emitting unit 50 may be at least one single-color or multi-color LED light source, wherein the multi-color LED includes a wafer with more than one wavelength, and the wavelengths include visible light and invisible light. In other words, the first light emitting unit 50 may include a single white, or red, or green, or blue wafer inside to emit light of a single color; or three wafers of red, green and blue can be provided simultaneously, and different colors of light can be emitted by controlling.

The light guide column 30 in this embodiment is designed to be similar to a radiator toothed structure according to the product ID, and meanwhile, under the condition that only two LED lamps are used at each lighting position, the uneven mixing design of the light scattering powder is performed on each light guide column 30 toothed sheet, so as to meet the uniform light distribution requirement of the indicator lamps.

In this embodiment, for each light bar, before the front and rear LED lamps enter the light guide post 30 through the light shielding sleeve 40, the light can be uniformly scattered by the action of a transparent silica gel sheet, so that the light of the LED lamps cannot be too focused, and then enters the light guide post 30.

In this embodiment, the material of the light shielding sleeve 40 is, for example, opaque plastic, which can be manufactured by injection molding. The light shielding sleeve 40 can be light shielding foam or black rubber, and the surface of the black rubber is rough and black, so that on one hand, light diffused from the light emitting unit to the side surface can be absorbed, reflection and refraction of light are reduced, the problem of light crosstalk can be solved, and on the other hand, the light shielding sleeve 40 has elasticity, and therefore the light guiding column can be protected.

While the utility model has been described with reference to several exemplary embodiments, it is to be understood that the terminology used is intended to be in the nature of words of description and of limitation. As the present utility model may be embodied in several forms without departing from the spirit or essential attributes thereof, it should be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the metes and bounds of the claims, or equivalences of such metes and bounds are therefore intended to be embraced by the appended claims. It should be noted that, specific examples in this embodiment may refer to examples described in the foregoing embodiments and alternative implementations, and are not described in detail in this embodiment.

It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to be limiting. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure in accordance with the embodiments provided herein.

It is to be understood that the drawings are merely illustrative of some embodiments of the present utility model and that it is possible for those skilled in the art to adapt the present utility model to other similar situations without the need for inventive work. In addition, it should be appreciated that while the development effort might be complex and lengthy, it will nevertheless be a routine undertaking of design, fabrication, or manufacture for those of ordinary skill having the benefit of this disclosure, and further having the benefit of this disclosure.

The term "embodiment" in this disclosure means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive. It will be clear or implicitly understood by those of ordinary skill in the art that the embodiments described in the present utility model can be combined with other embodiments without conflict.

The above examples merely represent a few embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the patent claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of the utility model should be assessed as that of the appended claims.

Claims

1. A light guide assembly, the light guide assembly comprising: a light emitting unit and a light guiding column;

the light guide column comprises a first light guide body, a second light guide body and a spacing crystal; the spacer crystal is arranged between the first light guide body and the second light guide body;

the first light guide body is provided with a first light incident surface, a first light emergent surface and a second light emergent surface; after entering the first light-in surface, the light emitted by the light-emitting unit is respectively reflected by the first light-out surface and the interval crystal and then emitted by the second light-out surface;

the second light guide body is provided with a second light incident surface and a third light emergent surface, and light emitted by the light emitting unit is emitted through the third light emergent surface after passing through the second light incident surface.

2. The light guide assembly of claim 1, wherein the spacer crystal is a single-sided mirror, and forms an obtuse angle with the second light-emitting surface for reflecting a portion of light impinging on the spacer crystal to the second light-emitting surface.

3. A light guide assembly as recited in claim 1, wherein the first light guide body and the second light guide body are injection molded from a mixture of PC material and light diffusing powder.

4. A light guide assembly as recited in claim 3, wherein said light diffusing powder content in said second light guide is greater than said light diffusing powder content in said first light guide.

5. The light guide assembly of claim 2, further comprising a light diffuser disposed on the first and second light guides, wherein light emitted by the light emitting unit enters the first and second light guides through the light diffuser.

6. The light guide assembly of claim 1, wherein the light emitting unit is an LED light bead.

7. A lighting module, the lighting module comprising:

the light guide assembly of any one of claims 1 to 6;

the accommodating shell is in clearance fit with the light guide column;

the light-emitting unit is coupled with the accommodating shell, and light emitted by the light-emitting unit enters from the light-in surface of the light guide column through the accommodating shell and is emitted from the light-out surface of the light guide column.

8. The lighting module of claim 7, wherein the housing has a mounting portion and a light blocking portion, the mounting portion and the light blocking portion being integrally injection molded.

9. The light emitting module of claim 8, wherein the light emitting module comprises a plurality of the light guide posts connected by a connection portion;

the accommodating shell comprises a plurality of light isolating parts;

the light isolation parts and the light guide columns are arranged at intervals, and light transmitted by the light guide columns is not interfered with each other.

10. The lighting module of claim 9, wherein the mounting portion is secured to the connection portion by a hot melt adhesive.