CN111623301A

CN111623301A - Illumination module and illumination lamp

Info

Publication number: CN111623301A
Application number: CN202010604481.2A
Authority: CN
Inventors: 邓诗涛; 尹松; 李双增
Original assignee: Opple Lighting Co Ltd; Suzhou Op Lighting Co Ltd
Current assignee: Opple Lighting Co Ltd; Suzhou Op Lighting Co Ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2020-09-04

Abstract

The invention discloses an illumination module, which comprises a light source module and an extinction grating (550), wherein the extinction grating (550) is provided with an extinction cavity (556), an extinction cavity light inlet and an extinction cavity light outlet are respectively arranged at two ends of the extinction cavity (556) along the length direction of the extinction cavity (556), and the light source module is arranged at the extinction cavity light inlet. The scheme can solve the problem that stray light of the lighting lamp is more. The invention also discloses a lighting fixture comprising a housing (100) and a lighting module according to the above, said lighting module being mounted in said housing (100).

Description

Illumination module and illumination lamp

Technical Field

The invention relates to the technical field of lighting equipment, in particular to a lighting module and a lighting lamp.

Background

In daily life and work, the lamp is widely applied to household lighting, commercial lighting, industrial lighting, landscape lighting and the like, and provides convenience for life of people. With the increasing demand of users, the performance of lighting fixtures is also continuously optimized. The existing light source is usually a point light source, light emitted by the light source is scattered towards various angles, and in order to pursue higher optical efficiency and realize accurate light distribution, the light source is usually matched with a reflector and a lens lamp optical element for use. However, even after the light emitted from the light source passes through the reflector, the lens and other optical elements to adjust the exit angle, a large amount of stray light still exists, which affects the lighting effect of the lamp, and causes the glare problem in the use process.

It is therefore desirable to have a lighting module that overcomes or at least alleviates the above-mentioned drawbacks of the prior art.

Disclosure of Invention

The invention discloses an illumination module, which aims to solve the problem that a lighting lamp has more stray light.

In order to solve the problems, the invention adopts the following technical scheme:

the utility model provides an illumination module, includes light source module and extinction grid, the extinction grid has extinction chamber, follows the length direction in extinction chamber, the both ends in extinction chamber are extinction chamber income light mouth and extinction chamber light-emitting window respectively, light source module set up in extinction chamber light-emitting window department.

A lighting fixture comprising a housing and a lighting module according to the above, said lighting module being mounted in said housing.

The technical scheme adopted by the invention can achieve the following beneficial effects:

the light source module is provided with the extinction grating, the extinction grating is provided with the extinction cavity, and light rays emitted by the light source module enter the extinction cavity, so that stray light which is not expected to be reserved is absorbed and weakened by the inner wall of the extinction cavity, the aim of reducing the stray light of the lighting module is fulfilled, the lighting effect of the lighting module is effectively improved, and the problem of glare in the using process is avoided.

Drawings

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

fig. 1 is an exploded view of a lighting module according to an embodiment of the present invention;

FIG. 2 is a schematic view of a light extinction grid of the lighting module shown in FIG. 1;

FIG. 3 is an exploded view of the extinction grid shown in FIG. 2;

FIG. 4 is a schematic view of a light extinction grid of an illumination module according to another embodiment of the invention;

FIG. 5 is an exploded view of the extinction grid shown in FIG. 4;

FIG. 6 is a schematic view of an extinction grating of a lighting module according to yet another embodiment of the invention;

FIG. 7 is an exploded view of the extinction grid shown in FIG. 6;

fig. 8 and 9 are schematic views of a lighting fixture disclosed in an embodiment of the present invention;

FIG. 10 is an exploded view of the lighting fixture of FIG. 8;

FIG. 11 is a side view of the light fixture of FIG. 8;

FIG. 12 is a cross-sectional view of the lighting fixture of FIG. 11 along section line A-A, incorporating the disclosed lighting module of an embodiment of the present invention;

FIG. 13 is an enlarged, partial schematic view of the location of the lighting modules of the cross-sectional view of the lighting fixture of FIG. 12;

FIG. 14 is an exploded view of the housing of the light fixture of FIG. 8;

fig. 15 is an exploded view of the RGB light source module of the lighting fixture shown in fig. 8.

Description of reference numerals:

100-shell, 110-top wall, 120-bottom wall, 121-lighting module shielding area, 130-circumferential wall, 140-light outlet, 150-L-shaped connecting piece, 160-RGB light source module fixing piece, 170-light outlet frame, 200-RGB light source module, 210-first RGB light source, 211-first RGB LED, 220-second RGB light source, 230-light guide plate, 300-annular decorative cover, 400-lamp bearing frame, 500-lighting module, 510-fixing frame, 520-light source circuit board, 530-LED, 540-lens, 541-first end, 542-second end, 543-reflection inclined plane, 544-light source mounting cavity, 550-extinction grating, 551-top plate, 5511-first plug-in groove, 552-bottom plate, 5521-a second plug groove, 553-a first side plate, 554-a second side plate, 555-a grating plate and 556-a light elimination cavity.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. 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 invention.

In the description of the present invention, it should be noted that the term "spaced from each other" means that there is a gap between two members.

The technical solutions disclosed in the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

An embodiment of the present invention discloses an illumination module, which includes a light source module and a light extinction grid 550, referring to fig. 1 to 7.

The extinction grating 550 has an extinction cavity 556, and along the length direction of the extinction cavity 556, two ends of the extinction cavity 556 are respectively an extinction cavity light inlet and an extinction cavity light outlet, and the light source module is disposed at the extinction cavity light inlet. The light elimination cavity 556 can eliminate or reduce stray light in light emitted by the light source module, so that the dazzling problem caused by more stray light of the illumination module is avoided, the effective utilization rate of light is improved, and the illumination effect of the illumination module is improved.

The specific structure of the light source module can be properly selected according to actual needs. Optionally, referring to fig. 1 and 13, the light source module includes an LED530 and a lens 540, the lens 540 includes a first end 541 and a second end 542 that are oppositely disposed, and a reflection inclined plane 543 connecting the first end 541 and the second end 542, the first end 541 is provided with a light source installation cavity 544, the LED530 is installed in the light source installation cavity 544, an inner wall surface of the light source installation cavity 544 is a light incident surface, an end surface of the second end 542 is a light emergent surface, and the second end 542 is located at the light incident surface of the extinction cavity. The scattered light emitted by the LED530 enters the lens 540 through the light incident surface, part of the light is reflected by the reflection inclined surface 543 and then exits through the light exit surface, and part of the light directly exits through the light exit surface, so that the light emitted by the LED530 is gathered and emitted, the light emitting effect of the light source module is improved, the light utilization rate is improved, and stray light is reduced.

Optionally, the length direction of the light extinction cavity 556 is perpendicular to the end surface (i.e., the light exit surface) of the second end 542, so that the third light emitted along the direction perpendicular to the light exit surface can exit through the light extinction cavity 556, and the light utilization rate is improved.

The number and arrangement of the LEDs 530 and the lenses 540 can be selected according to the usage requirement, and the number of the extinction cavities 556 can be selected according to the usage requirement, for example, the extinction cavities 556 are formed as a single extinction cavity 556 corresponding to the plurality of lenses 540. Optionally, the lighting module includes a fixing support 510, a plurality of LEDs 530 sequentially arranged along a length direction of the fixing support 510, and a plurality of lenses 540 arranged corresponding to the plurality of LEDs 530, and the extinction grating 550 is fixedly mounted on the fixing support 510, wherein the extinction grating 550 has a plurality of extinction cavities 556, and the plurality of extinction cavities 556 and the plurality of lenses 540 are in one-to-one correspondence, so that an extinction effect of the extinction grating 550 can be further improved, and stray light of the lighting module 500 is reduced. The fixing bracket 510 is fixedly mounted on the housing 100, the plurality of LEDs 530 are mounted on the light source circuit board 520 at intervals, and the light source circuit board 520 is fixedly mounted on the fixing bracket 510.

The specific structure of the extinction grating 550 may be appropriately selected according to actual needs, and the stray light of the illumination module 500 may be effectively eliminated.

Referring to fig. 1 to 5, the extinction grating 550 includes a grating frame and a plurality of grating plates 555 mounted on the grating frame, the grating frame is fixedly mounted on the fixing bracket 510, the grating frame includes a top plate 551, a bottom plate 552, a first side plate 553 and a second side plate 554, the top plate 551 and the bottom plate 552 are spaced from each other, along a length direction of the bottom plate 552, the first side plate 553 and the second side plate 554 are disposed at two ends of the bottom plate 552 and are connected with the top plate 551 and the bottom plate 552, the plurality of grating plates 555 are spaced from each other along the length direction of the bottom plate 552, the grating plates 555 and the grating frame enclose an extinction cavity 556, light rays emitted by each LED530 are refracted and/or reflected by a corresponding lens 540 and then enter the extinction cavity 556, and then exit the extinction cavity 556 after stray light is eliminated by the extinction cavity 556.

Referring to fig. 3 and 5, the top plate 551 has a first insertion groove 5511 and/or the bottom plate 552 has a second insertion groove 5521, and the grid plate 555 is inserted into the first insertion groove 5511 and/or the second insertion groove 5521, so that the grid plate 555 is positioned and assembled quickly, and the assembling efficiency of the extinction grid 550 is improved. In the illustrated preferred embodiment, the top plate 551 has a first insertion groove 5511, the bottom plate 552 has a second insertion groove 5521, and the upper and lower ends of the grid plate 555 are respectively inserted into the first insertion groove 5511 and the second insertion groove 5521, so that the grid plate 555 is more stably and reliably assembled.

In order to further improve the extinction effect of the extinction grating 550, the grating plate 555 has an extinction structure, and the specific structure of the extinction structure may be appropriately designed according to actual needs, for example, the extinction structure is a mesh extinction protrusion or a strip extinction protrusion. Referring to fig. 1 to 3, 12 and 13, in an embodiment of the present invention, the grating plate 555 is provided with grid extinction protrusions, and in the illustrated embodiment, the grating plate 555 is integrally formed as a net plate, which not only satisfies extinction requirements, but also reduces the weight of the grating plate, thereby reducing the weight of the lighting fixture. Referring to fig. 4 and 5, in another embodiment of the present invention, a strip-shaped extinction protrusion is disposed on the grating plate 555, and in the illustrated embodiment, the grating plate 55 includes a plate-shaped body and a strip-shaped extinction protrusion disposed on the plate-shaped body. The extending direction of the strip-shaped extinction protrusion is preferably parallel to the second end surface of the lens 540, so as to better eliminate stray light.

In addition, if necessary, at least one of the top plate 551, the bottom plate 552, the first side plate 553, and the second side plate 554 has a light extinction structure, which improves a light extinction effect of the light extinction grill 550. The specific structure of the light extinction structure can be designed appropriately according to actual needs, for example, the light extinction structure is a net-shaped light extinction protrusion or a strip-shaped light extinction protrusion similar to the grating plate 555.

Referring to fig. 6 and 7, in still another embodiment of the present invention, a light extinction grill 550 includes a grill frame fixedly mounted to a fixing bracket 510 and a plurality of grill plates 555 mounted to the grill frame, the grill frame including a top plate 551, a bottom plate 552, a first side plate 553, and a second side plate 554, the top plate 551 and the bottom plate 552 being spaced apart from each other, the first side plate 553 and the second side plate 554 being disposed at both ends of the bottom plate 552 and connecting the top plate 551 and the bottom plate 552 along a length direction of the bottom plate 552, the plurality of grill plates 555 being spaced apart from each other along a width direction of the bottom plate 552, wherein a light extinction chamber 556 sequentially penetrates the grill plates 555 along the width direction of the bottom plate 552. The grating plates 555 arranged at intervals form a strip extinction structure on the inner periphery of the extinction cavity 556, the inner periphery of the whole extinction cavity 556 is provided with the extinction structure, no joint position exists, and the extinction effect of the extinction grating 550 is improved.

Referring to fig. 7, the top plate 551 has a first insertion groove 5511 and/or the bottom plate 552 has a second insertion groove 5521, and the grid plate 555 is inserted into the first insertion groove 5511 and/or the second insertion groove 5521, so that the grid plate 555 is positioned and assembled quickly, and the assembling efficiency of the extinction grid 550 is improved. In the illustrated preferred embodiment, the top plate 551 has a first insertion groove 5511, the bottom plate 552 has a second insertion groove 5521, and the upper and lower ends of the grid plate 555 are respectively inserted into the first insertion groove 5511 and the second insertion groove 5521, so that the grid plate 555 is more stably and reliably assembled.

Further, the extinction grating 550 is coated with an extinction coating that prevents or reduces reflections, thereby preventing or reducing stray light from reflections from the extinction grating 550. The specific color and type of the matting coating can be properly selected according to actual needs, and optionally, the matting coating is frosted black coating, so that the matting effect is good.

The embodiment of the invention also discloses a lighting fixture, and referring to fig. 8 to 15, the lighting fixture comprises a housing 100 and the lighting module 500 according to the above description, the lighting module 500 is installed in the housing 100, the housing 100 can protect the lighting module 500, and the installation and fixation of the lighting module 500 are facilitated.

Optionally, the lighting fixture further comprises a control system and an RGB light source module 200. The housing 100 has a light outlet 140, the RGB light source module 200 includes a light guide plate 230 and a first RGB light source 210, the control system controls the first RGB light source 210 to emit a first light with a first predetermined color, and the first predetermined color can be properly selected according to different requirements, for example, a blue-sky color simulating a fine midday sky, a reddish color simulating an evening or morning sky, a blue-gray color simulating a rainy weather, and the like, so that people can obtain an illumination effect close to natural light.

The light guide plate 230 is installed at the light outlet 140, the light guide plate 230 includes a first plate surface facing the outside of the housing 100, a second plate surface facing the inside of the housing 100, and an outer peripheral surface connecting the first plate surface and the second plate surface, and the first RGB light source 210 faces the outer peripheral surface, wherein the first light is emitted into the light guide plate 230 through the outer peripheral surface and is emitted out of the light guide plate 230 through the first plate surface, and the first light is converted by the light guide plate and is then uniformly emitted out of the first plate surface of the light guide plate, so as to form a surface light source to simulate a real sky.

The specific type of the light guide plate 230 can be selected appropriately, for example, an acrylic light guide plate, but in the conventional art, the acrylic light guide plate needs to be printed with light guide points on the light guide plate by laser engraving and cross grid engraving techniques, so that grid lamp lines exist on the light guide plate seen by a user, the difference between the grid lamp lines and the real sky is large, and the lighting effect of the lamp is affected. Optionally, the light guide plate 230 is a nano light guide plate, the nano light guide plate converts a line light source or a point light source into a surface light source by using a light scattering effect of nano particles evenly dispersed in the light guide plate 230, and the surface of the light guide plate 230 does not need to be designed and processed with any dots and grids, so that the lighting effect of the lighting fixture is more uniform and softer, and is closer to a real sky.

In the case that the light guide plate 230 has a large size, the first RGB light source 210 may not meet the use requirement. Therefore, referring to fig. 15, in the embodiment of the invention, the RGB light source module 200 includes the second RGB light source 220, the control system controls the second RGB light source 220 to emit the second light with the second predetermined color, the second RGB light source 220 faces the outer peripheral surface, the second light enters the light guide plate 230 through the outer peripheral surface and exits the light guide plate 230 through the first plate surface, and the first RGB light source 210 and the second RGB light source 220 are used in cooperation, so that the light emitting effect of the lighting fixture is better. The second predetermined color can be selected according to different requirements, for example, a color of blue sky simulating sunny midday sky, a reddish color simulating evening or morning sky, a blue-gray color simulating rainy weather, and the like, so that people can obtain a lighting effect close to natural light. Wherein the first predetermined color and the second predetermined color may be the same or different depending on the actual desired lighting effect.

Further, the light guide plate 230 is a rectangular light guide plate, and the first RGB light sources 210 and the second RGB light sources 220 are disposed on opposite sides of the light guide plate 230 along a width direction of the light guide plate 230. The first RGB light source 210 and the second RGB light source 220 arranged oppositely make the light distribution on the light guide plate 230 more uniform, so that the lighting effect of the lighting fixture is closer to the real sky.

Optionally, along the length direction of the light guide plate 230, the first RGB light source 210 extends from one end of the light guide plate 230 to the other end of the light guide plate 230, and the second RGB light source 220 extends from one end of the light guide plate 230 to the other end of the light guide plate 230, so that the light distribution on the whole light guide plate 230 is uniform and beautiful. The specific types of the first RGB light source 210 and the second RGB light source 220 can be properly selected according to actual needs, and preferably, the first RGB light source 210 includes a plurality of first rgblds 211 arranged in sequence, and the second RGB light source 220 includes a plurality of second RGB LEDs arranged in sequence, and the LED light source has the advantages of high luminous efficiency, long service life and environmental protection.

Referring to fig. 9 to 11, in the embodiment of the present invention, the light outlet 140 is provided with the lamp bearing frame 400, the lamp bearing frame 400 may be installed at a ceiling lamp position of a house, so as to facilitate installation and use of the lighting lamp, after the lighting lamp is installed, only the light outlet position can be observed by a user, the housing 100 is completely hidden inside structures such as a ceiling, so that the lighting lamp is more beautiful, and the light outlet is similar to a window in the house, so that a lighting effect generated by the lighting lamp is closer to a real sky. And, the light outlet 140 is provided with an annular decorative cover 300 arranged around the light outlet, the annular decorative cover 300 makes the part of the lighting fixture which can be observed by the user more beautiful.

Referring to fig. 14, the housing 100 includes an RGB light source module fixing member 160 and a light exit frame 170, the light exit frame 170 and the RGB light source module fixing member 160 are disposed at the light exit 140, the light exit frame 170 is fixedly mounted on the housing 100 by any suitable method, such as welding, riveting or screwing, the RGB light source module fixing member 160 is fixedly mounted on the light exit frame 170, the RGB light source module 200 is mounted on the RGB light source module fixing member 160, and the light exit frame 170 and the RGB light source module fixing member 160 can improve the strength of the position of the light exit 140 of the housing 100 and facilitate the fixing and mounting of the RGB light source module 200. In the illustrated embodiment of the invention, the light outlet frame 170 is fixed to the bottom wall 120 by an L-shaped adaptor 150.

In the real sky, the position where the sun or the moon is located has higher brightness than other parts, and in order to make the lighting effect of the lighting fixture closer to the real sky, optionally, referring to fig. 12, the lighting module 500 emits a third light ray, the third light ray enters the light guide plate 230 through the second plate surface, and exits the light guide plate 230 through the first plate surface, and the brightness of the position where the light guide plate 230 is aligned with the lighting module 500 is higher, so as to bring the use feeling similar to the sun to the user. Optionally, the color temperature of the third light is 2000k to 7000k, and the specific color temperature of the third light can be appropriately selected according to the use requirement, and different color temperatures can be selected when simulating the sun at different times and different weather conditions. Further, the color temperature of the third light ray is 5700k to 6500k, simulating sunlight in sunny weather.

The light emitting angle of the lighting module 500 can be properly selected according to the use requirement, the stray light influences the lighting effect of the lighting fixture, and the light emitted by the lighting fixture is easy to be dazzling. Preferably, the light emitting angle of the lighting module 500 is 0 to 10 degrees.

Except for the equatorial region, most of the sunlight is obliquely irradiated, so the included angle between the length direction of the extinction cavity 556 and the second plate surface of the light guide plate 230 is preferably 20 degrees to 60 degrees, and the third light emitted by the illumination module 500 is obliquely incident into the light guide plate 230, so that the illumination effect of the illumination lamp is closer to the real sky.

Optionally, the housing 100 includes a top wall 110, a bottom wall 120 and a circumferential wall 130 connecting the top wall 110 and the bottom wall 120, the light outlet 140 is disposed on the bottom wall 120, the inner surface of the top wall 110, the inner surface of the bottom wall 120 and the inner surface of the circumferential wall 130 are coated with a light extinction coating, the light extinction coating can prevent or reduce stray light generated by light rays emitted by the RGB light source module 200 and the lighting module 500 reflected in the housing 100, so as to improve the lighting effect of the luminaire, and the light extinction coating, especially the light extinction coating, is coated on the inner side of the housing 100, so that the "dark sky" simulated by the light guide plate 230 can have a deep sensation, and more approaches to a real sky effect. The specific color and type of the matting paint can be selected as required, and optionally, the matting paint is frosted black, which has good matting effect and makes the "sky" simulated by the light guide plate 230 deeper.

Optionally, the bottom wall 120 includes a light exit area and a lighting module shielding area 121, the light exit port 140 is disposed in the light exit area, the lighting module 500 is disposed corresponding to the lighting module shielding area 121, and the lighting module 500 is offset from the light exit port 140, so that the lighting module 500 is shielded by the lighting module shielding area 121, the lighting module 500 is prevented from being exposed to the light exit port 140, and the lighting fixture provides a more real lighting effect of natural sky for the user. Wherein, along the length direction of the light guide plate 230, the ratio of the size of the light guide plate 230 to the overall size of the lighting module is greater than 0.5, and along the thickness direction of the light guide plate 230, the ratio of the size of the lighting module 500 to the overall size of the lighting module is 0.5 to 0.8, so that the lighting fixture has a compact structure, and the arrangement space required by the lighting fixture is reduced under the condition that the sizes of the light outlets 140 are the same.

The incident position of the third light emitted by the lighting module 500 on the light guide plate 230 can be properly selected according to the actual required lighting effect, referring to fig. 5, in the embodiment of the present invention, the lighting module 500 faces the light guide plate 230 and is close to the edge of the lighting module 500, the light guide plate 230 simulates a window in a house, and the sunlight simulated by the lighting module 500 is obliquely incident from the edge of the window, so that the lighting effect of the lighting fixture is softer, and comfort is brought to people.

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

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides an illumination module, its characterized in that includes light source module and extinction grid (550), extinction grid (550) have extinction chamber (556), follow the length direction in extinction chamber (556), the both ends in extinction chamber (556) are extinction chamber income light mouth and extinction chamber light-emitting outlet respectively, light source module set up in extinction chamber income light mouth department.

2. The lighting module according to claim 1, wherein the light source module comprises an LED (530) and a lens (540), the lens (540) comprises a first end (541) and a second end (542) which are oppositely arranged, and a reflection inclined plane (543) which connects the first end (541) and the second end (542), the first end (541) is provided with a light source installation cavity (544), the LED (530) is installed in the light source installation cavity (544), an inner wall surface of the light source installation cavity (544) is a light incident surface, an end surface of the second end (542) is a light emergent surface, and the second end (542) is located at the light incident surface of the extinction cavity.

3. The lighting module of claim 2, wherein the length of the extinction cavity (556) is perpendicular to an end face of the second end (542).

4. The lighting module according to claim 2, wherein the lighting module comprises a fixing bracket (510), a plurality of LEDs (530) sequentially arranged along a length direction of the fixing bracket (510), and a plurality of lenses (540) arranged corresponding to the plurality of LEDs (530), and the extinction grating (550) is fixedly mounted on the fixing bracket (510), wherein the number of the extinction cavities (556) is multiple, and the extinction cavities (556) correspond to the lenses (540) one by one.

5. The lighting module according to claim 4, wherein the extinction grid (550) comprises a grid frame and a plurality of grid plates (555) mounted on the grid frame, the grid frame is fixedly mounted on the fixing bracket (510), the grid frame comprises a top plate (551), a bottom plate (552), a first side plate (553) and a second side plate (554), the top plate (551) and the bottom plate (552) are spaced apart, the first side plate (553) and the second side plate (554) are disposed at two ends of the bottom plate (552) along a length direction of the bottom plate (552) and connect the top plate (551) and the bottom plate (552), the plurality of grid plates (555) are spaced apart from each other along the length direction of the bottom plate (552), and the grid plates (555) and the grid frame enclose the extinction cavity (556).

6. The lighting module according to claim 5, wherein the top plate (551) has a first plug-in recess (5511) and/or the bottom plate (552) has a second plug-in recess (5521), the grid plate (555) being plugged into the first plug-in recess (5511) and/or the second plug-in recess (5521).

7. The lighting module according to claim 5, wherein the grid plate (555) has a light extinction structure, and the light extinction structure is a net-shaped light extinction protrusion or a strip-shaped light extinction protrusion.

8. The lighting module according to claim 5, wherein at least one of the top plate (551), the bottom plate (552), the first side plate (553), and the second side plate (554) has a light extinction structure, and the light extinction structure is a mesh-shaped light extinction protrusion or a strip-shaped light extinction protrusion.

9. The lighting module of claim 4, wherein the light extinction grid (550) comprises a grid frame and a plurality of grid plates (555) mounted to the grid frame, the grid frame is fixedly arranged on the fixed support (510), and comprises a top plate (551), a bottom plate (552), a first side plate (553) and a second side plate (554), the top plate (551) and the bottom plate (552) are spaced apart from each other, along the length direction of the bottom plate (552), the first side plate (553) and the second side plate (554) are disposed at both ends of the bottom plate (552) and connect the top plate (551) and the bottom plate (552), the plurality of grating plates (555) are spaced apart from each other in a width direction of the bottom plate (552), wherein the extinction cavity (556) penetrates through the grating plates (555) in sequence along the width direction of the bottom plate (552).

10. The lighting module according to claim 9, wherein the top plate (551) has a first plug-in recess (5511) and/or the bottom plate (552) has a second plug-in recess (5521), the grid plate (555) being plugged into the first plug-in recess (5511) and/or the second plug-in recess (5521).

11. The lighting module of any one of claims 1-10 wherein the matte grid (550) is coated with a matte paint.

12. The lighting module of claim 12 wherein the matte finish is a matte black finish.

13. A lighting fixture, characterized in that it comprises a housing (100) and a lighting module according to any one of claims 1-12, said lighting module being mounted in said housing (100).