CN218119532U - Lighting device - Google Patents

Abstract

The application provides a lighting device, which comprises a first reflector, a first light source and a second light source, wherein the first light source and the second light source are arranged in the first reflector; one side of the first reflector is provided with a first light outlet, and the first reflector is configured to reflect the light rays emitted by the first light source out of the first light outlet; the second light source comprises a light outlet window and a diffusion piece arranged at the light outlet window, and the second light source is configured in such a way that light rays emitted by the light outlet window are directly emitted from the first light outlet after being diffused by the diffusion piece. The application provides a lighting device can make the light that shines keep illumination luminance and lower dizzy light value when softer.

Description

Lighting device

Technical Field

The application relates to the technical field of lighting devices, in particular to a lighting device.

Background

The lamp is used as a necessary article in daily life of people, and needs to meet the illumination requirements of people in various different living places. Most of the existing lamps in the market are in a direct lighting mode, namely, the light-emitting lamp body directly emits light to illuminate. Although the lamp can improve the illumination brightness, the glare value is large, the injury to human eyes is large, and the lamp is not suitable for household illumination or illumination of long-term office places.

In the related art, a lamp is provided, which adopts an indirect lighting manner, i.e., light emitted by a light-emitting lamp body can be reflected and then emitted, and has the advantage of softer light.

SUMMERY OF THE UTILITY MODEL

The inventors of the present application have realized that: although the indirectly illuminating lamp can make the illuminating light softer, the light is lost in the reflection process, so that the illumination brightness is weakened, and the requirement of people on high-brightness illumination cannot be met.

An object of the embodiment of the present application is to provide a lighting device, which is used to solve the problem that the lighting fixture in the related art cannot maintain the illumination brightness and the lower glare value while making the emitted light softer.

The inventor of the present application proposes the basic idea that: the first light source and the second light source are arranged in the first reflecting cover at the same time, light rays emitted by the first light source are reflected out of the first light outlet of the first reflecting cover, light rays emitted by the second light source are diffused by the diffusion piece and then directly emitted out of the first light outlet, so that the glare value of the lamp is reduced, the illumination intensity of the light rays emitted out of the first light outlet after being diffused by the diffusion piece is larger, the illumination brightness of the lamp is improved, and the requirement of people on high-brightness illumination can be met.

Based on the basic concept, the embodiment of the application provides a lighting device, which comprises a first reflector, a first light source and a second light source, wherein the first light source and the second light source are arranged in the first reflector; one side of the first reflector is provided with a first light outlet, and the first reflector is configured to reflect the light rays emitted by the first light source out of the first light outlet; the second light source comprises a light outlet window and a diffusion piece arranged at the light outlet window, and the second light source is configured in such a way that light rays emitted by the light outlet window are directly emitted from the first light outlet after being diffused by the diffusion piece.

By adopting the technical scheme, the glare value can be reduced, meanwhile, higher illumination brightness can be kept, and the requirement of people on high-brightness illumination is met.

In some embodiments, the second light source includes a second reflector and a light emitting device disposed in the second reflector, the light exit window is located at an end of the second reflector close to the first light exit, and the second reflector is configured to reflect a portion of light emitted by the light emitting device out of the light exit window.

By adopting the technical scheme, all light rays emitted by the light-emitting element can be emitted out of the first light outlet from the light-emitting window, so that the illumination brightness of the irradiation surface corresponding to the first light outlet is higher.

In some embodiments, the second reflective cover includes a cover bottom wall disposed opposite to the light exit window, the first light source is disposed on an outer surface of the cover bottom wall, and the light emitting element is disposed on an inner surface of the cover bottom wall.

By adopting the technical scheme, the light emitted by the first light source can be ensured to be reflected out of the first light outlet, the light emitted by the light-emitting element directly emits out of the first light outlet, and the lighting brightness can be improved while the glare value is reduced.

In some embodiments, an orthographic projection of the first light source on the cover bottom wall is offset from an orthographic projection of the light emitting element on the cover bottom wall.

By adopting the technical scheme, the first light source and the light-emitting element can be mounted on the bottom wall of the cover without mutual influence, and the mounting stability of the first light source and the light-emitting element is enhanced.

In some embodiments, the second reflective cover further comprises two first side walls oppositely arranged along a first direction and two second side walls oppositely arranged along a second direction, wherein two of the first direction, the second direction and the thickness direction of the cover bottom wall are perpendicular to each other; one end of each first side wall, which is far away from the bottom wall of the cover, is provided with a first slot, the first slot extends along the second direction and penetrates through two ends of the first side wall, the diffusion piece is of a plate-shaped structure, and the edge of the diffusion piece is inserted into the first slot; the two second side walls respectively block two ends of the first slot, and each second side wall is detachably connected with the first side wall and the cover bottom wall.

By adopting the technical scheme, the diffusion piece is greatly convenient to disassemble and assemble, and the assembly efficiency of the diffusion piece is improved; and the diffusion piece can seal the light-emitting window completely, so that light emitted by the light-emitting window is emitted out of the first light-emitting port after being diffused by the diffusion piece, and the glare value is effectively reduced.

In some embodiments, a U-shaped plate is disposed at an end of the first side wall away from the bottom wall of the housing, and the U-shaped plate surrounds the first slot and is integrated with the first side wall.

Through adopting above-mentioned technical scheme, can just so set up first slot together when the first lateral wall of preparation, be favorable to improving the preparation efficiency of second bowl.

In some embodiments, the diffuser element is curved away from the bottom wall of the cap in the first direction.

Through adopting above-mentioned technical scheme, can increase the diffusion piece and carry out the area that diffuses to light to the diffusion efficiency of the light that the reinforcing jetted out the light-emitting window.

In some embodiments, the angle between each of the first side walls and the bottom wall of the enclosure is obtuse.

Through adopting above-mentioned technical scheme, can increase the area of light-emitting window like this to increase diffusion piece carry out the area that diffuses to the light, improve the diffusion efficiency to the light that the light-emitting window jetted out.

In some embodiments, the first side wall and the cover bottom wall are of an integral structure, the second side wall is provided with a second slot, and the first side wall is inserted into the second slot, so that the second side wall is detachably connected with the first side wall and the cover bottom wall.

Through adopting above-mentioned technical scheme, can improve the packaging efficiency of second bowl like this, also can make the second lateral wall more firm with being connected of first lateral wall and cover diapire moreover.

In some embodiments, the second sidewall is provided with a third slot for inserting the diffuser.

By adopting the technical scheme, the closure of the diffusion piece to the light outlet window can be further enhanced, and the light emitted by the light outlet window is favorably emitted out of the first light outlet after being diffused by the diffusion piece, so that the glare value is reduced.

In some embodiments, the light emitting side of the first light source is provided with a first lens for diverging the light emitted by the first light source.

Through adopting above-mentioned technical scheme, just so can disperse the light that first light source sent for the more even reflection of light that first light source sent goes out first light-emitting outlet.

In some embodiments, the light emitting side of the light emitting element is provided with a second lens for converging light emitted by the light emitting element.

By adopting the technical scheme, the light emitted by the light-emitting element can be converged, so that more light emitted by the light-emitting element directly irradiates the diffusion plate to be diffused and scattered.

In some embodiments, the lighting device further comprises a controller configured to control a magnitude of a drive current that drives the first and second light sources to emit light to vary light output of the first and second light sources.

By adopting the technical scheme, the light output of the first light source and the second light source can be freely adjusted, so that the glare value of the lighting device is adjusted to adapt to different application scenes.

In some embodiments, the second light source is removably coupled to the first reflector.

Through adopting above-mentioned technical scheme, very big dismouting that has made things convenient for the second light source is favorable to improving the packaging efficiency of second light source.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic view of a lighting device in some embodiments of the present application;

FIG. 2 is an exploded view of a lighting device in some embodiments of the present application;

FIG. 3 is a top view of a second light source in some embodiments of the present application;

FIG. 4 isbase:Sub>A cross-sectional view A-A of FIG. 3;

FIG. 5 is an exploded view of a second light source in some embodiments of the present application;

FIG. 6 is a schematic assembly view of the first sidewall, the second sidewall and the diffuser in some embodiments of the present application;

FIG. 7 is an enlarged view taken at I in FIG. 6;

FIG. 8 is a control schematic of a controller in some embodiments of the present application;

FIG. 9 is a graph of an isocandela curve for a light emitting element in some embodiments of the present application;

fig. 10 is a first isolux curve of the illumination surface of the illumination device in the room according to some embodiments of the present disclosure;

FIG. 11 is a graph of an isocandela intensity of a first light source in some embodiments of the present application;

fig. 12 is a second isolux graph of the illumination surface of the illumination device in some embodiments of the present application.

Reference numerals:

a first bowl 1; a first light outlet 10; a first light source 2; a second light source 3; a light exit window 30; a diffuser 31; a second bowl 32; a cover bottom wall 321; a first sidewall 322; a second side wall 323; a U-shaped plate 324; a light emitting element 33; a first slot 4; a second slot 5; a third slot 6; a first lens 7; a second lens 8; a controller 9; a driver 91; a control interface 911; and an output 912.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or as implying that the number of indicated technical features is indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description of the present application, it is to be understood that the terms "upper", "lower", "side", "front", "rear", and the like indicate orientations or positional relationships based on installation, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

In the description of the present application, it should be noted that the term "and/or" is only one kind of association relationship describing the association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone.

It should be noted that the same reference numerals are used to denote the same components or parts in the embodiments of the present application, and for the same parts in the embodiments of the present application, only one of the parts or parts may be given the reference numeral, and it should be understood that the reference numerals are also applicable to the other same parts or parts.

As shown in fig. 1 and 2, fig. 1 is a schematic view of a lighting device in some embodiments of the present application, and fig. 2 is an exploded view of the lighting device in some embodiments of the present application. The lighting device comprises a first reflector 1 and a first light source 2 and a second light source 3 arranged in the first reflector 1.

Wherein, one side of first bowl 1 has first light-emitting outlet 10, and first bowl 1 is configured as the light reflection that sends first light source 2 and goes out first light-emitting outlet 10, and the internal surface of first bowl 1 can the reflection light, and the light that first light source 2 sent shines and jets out from first light-emitting outlet 10 again on the internal surface of first bowl 1, can make the light that shines indoor more soft like this, reduces the dizzy light value, alleviates the stimulation to people's eye.

The second light source 3 includes a light-emitting window 30 and a diffuser 31 disposed at the light-emitting window 30, and the light emitted from the light-emitting window 30 is diffused by the diffuser 31 and then directly emitted from the first light-emitting port 10 by the second light source 3. Therefore, the glare value of the light emitted after the diffusion of the diffusion member 31 is reduced, the light emitted from the light-emitting window 30 and the light reflected by the first reflector 1 are emitted from the first light-emitting port 10, and the light emitted from the light-emitting window 30 has higher brightness and is more uniform and softer than the light reflected by the first reflector 1, so that the brightness of the light emitted from the first light-emitting port 10 is higher and the glare value is reduced, thereby not only meeting the requirement of people on high-brightness illumination, but also reducing the stimulation to the eyes of people.

The lighting device can be suitable for household lighting or lighting of office places, the lighting device can be installed at the top of a room, and the lighting direction of the lighting device faces the indoor ground. For example, the first reflection cover 1 is installed at the top of a room, the first light outlet 10 and the light outlet window 30 both face the indoor floor, light emitted by the first light source 2 is reflected by the first reflection cover 1 and emitted from the first light outlet 10 to the indoor floor, compared with a ceiling, light emitted by the first light source 2 and reflected by the first reflection cover 1 can be emitted from the first light outlet 10, so that the illumination brightness in the illumination surface of the illumination device is improved, light emitted by the light outlet window 30 is diffused by the diffusion member 31 and then emitted from the first light outlet 10 to the indoor floor, so that the brightness of light emitted from the first light outlet 10 is increased, the brightness of the illumination surface of light reflected by the first light outlet 10 and the brightness of the illumination surface of light diffused by the diffusion member 31 are uniform and excessive, an excessive bright area does not appear in the visual line range of human eyes, and thus the reduction of glare value is facilitated, and the stimulation to human eyes is reduced.

In some embodiments, the function of reflecting light by the inner surface of the first reflective cover 1 can be realized by: although the inner surface of the first reflection cover 1 is coated with a light reflecting material, the first reflection cover 1 may be made of a material that reflects light, and the glossiness of the inner surface of the first reflection cover 1 of the embodiment of the present application is less than 8% in order to improve the light reflecting efficiency of the inner surface of the first reflection cover 1.

In some embodiments, as shown in fig. 5, fig. 5 is an exploded view of the second light source 3 in some embodiments of the present application. The second light source 3 includes a second reflector 32 and a light emitting element 33 disposed in the second reflector 32, the light emitting window 30 is located at an end of the second reflector 32 close to the first light outlet 10, that is, the light emitted from the light emitting window 30 is emitted from the first light outlet 10, the second reflector 32 is configured to reflect a portion of the light emitted from the light emitting element 33 out of the light emitting window 30, and another portion of the light emitted from the light emitting element 33 is directly emitted from the light emitting window 30, compared with the case that the second reflector 32 is not disposed, the light emitted from the light emitting element 33 is directly emitted, and after the second reflector 32 is disposed, a portion of the light emitted from the light emitting element 33 does not irradiate the first reflector 1, but irradiates the second reflector 32 and then exits the light emitting window 30, so that the light emitted from the light emitting element 33 is completely emitted from the light emitting window 30 directly or by reflection, which is beneficial to improving the illumination brightness of the illumination surface of the light emitting window 30 on the indoor ground, and meeting the illumination requirement of a user for high brightness of a local working surface in the indoor.

As shown in fig. 5, the light exit side of the light emitting element 33 is provided with a second lens 8 for condensing the light emitted from the light emitting element 33. Therefore, the light emitted by the light emitting element 33 can be converged and then irradiated onto the inner surface of the second reflective cover 32 and the diffusion piece 31, so that the proportion of the light directly irradiated onto the diffusion piece 31 is larger, the diffusion effect of the diffusion piece 31 on the light is favorably improved, and the glare can be effectively reduced.

In some embodiments, a convex lens may be disposed on the light emitting side of the light emitting element 33, and the convex lens may convert the scattered light emitted by the light emitting element 33 into parallel light and directly emit the parallel light from the light emitting window 30, so that it is ensured that all the light emitted by the light emitting element 33 is directly diffused by the diffusing member 31 and then emitted from the first light emitting port 10, which is beneficial to reducing the glare value of the light, and the light emitted by the light emitting element 33 is not lost on the irradiation path, so as to further improve the illumination brightness of the illumination device on the indoor irradiation surface.

Of course, instead of converting the scattered light emitted from the light emitting element 33 into parallel light using a convex lens, the light emitting element 33 capable of emitting parallel light, such as an excimer lamp, may be directly used.

In some embodiments, the second reflective cover 32 can be made of a metal plate, and the metal plate has the characteristics of light weight, high strength, low cost, good mass production performance, and the like, so that the weight of the second light source 3 can be reduced, and the weight of the lighting device can be reduced.

In some embodiments, as shown in fig. 3-5, fig. 3 isbase:Sub>A top view of the second light source 3 in some embodiments of the present application, and fig. 4 isbase:Sub>A cross-sectional viewbase:Sub>A-base:Sub>A of fig. 3. The second reflective cover 32 includes a cover bottom wall 321 disposed opposite to the light-emitting window 30, two first side walls 322 disposed opposite to each other along the first direction X, and two second side walls 323 disposed opposite to each other along the second direction Y, so that the first side walls 322 and the second side walls 323 enclose to form the light-emitting window 30, wherein two of the first direction X, the second direction Y, and the thickness direction Z of the cover bottom wall 321 are perpendicular to each other.

As shown in fig. 4, the included angle α between each first side wall 322 and the cover bottom wall 321 is an obtuse angle. Thus, the area of the light-emitting window 30 is larger than the area of the inner surface of the cover bottom wall 321, so that the irradiation surface of the light emitted from the light-emitting window 30 on the indoor ground after being diffused by the diffuser 31 can be enlarged, which is beneficial to increasing the brightness of the irradiation surface of the lighting device in the indoor.

As shown in fig. 4, the first light source 2 is disposed on the outer surface of the cover bottom wall 321, and the light emitting element 33 is disposed on the inner surface of the cover bottom wall 321. That is, the light-emitting side of the first light source 2 faces the inner surface of the first reflector 1, which is beneficial to the fact that all the light emitted by the first light source 2 is reflected by the inner surface of the first reflector 1 to exit the first light-emitting port 10, and the light-emitting side of the light-emitting element 33 faces the inner surface of the second reflector 32, so that all the light emitted by the light-emitting element 33 can be emitted from the light-emitting window 30, and the light leakage situation cannot occur. Moreover, the cover bottom wall 321 is a plane structure, which is beneficial to more stably and firmly mounting the first light source 2 and the light emitting element 33 on the cover bottom wall 321.

In some embodiments, the optical axis of the first light source 2 and the optical axis of the light emitting element 33 are both parallel to the thickness direction of the bottom wall 321 of the cover, and the optical axis direction of the first light source 2 is opposite to the optical axis direction of the light emitting element 33, so that in an indoor environment, light emitted by the first light source 2 can be irradiated towards the right top, and light emitted by the light emitting element 33 can be irradiated towards the right bottom, which is beneficial to more uniform reflection of the light source emitted by the first light source 2, and can reduce loss of light emitted by the light emitting element 33, so that the brightness of an indoor irradiation surface of the lighting device is ensured, meanwhile, an excessively bright illumination area cannot appear, the lighting effect of the lighting device is improved, and stimulation to human eyes is reduced.

In some embodiments, the first light source 2 and the light emitting element 33 of the present application each include a substrate and an LED lamp disposed on the substrate, and the substrate is fixedly mounted on the cover bottom wall 321 by screws, so when the thickness of the cover bottom wall 321 is small, if the first light source 2 and the light emitting element 33 are overlapped in the thickness direction of the cover bottom wall 321, the mounting screws of the substrate of the first light source 2 collide with the mounting screws of the substrate of the light emitting element 33, and the first light source 2 and the light emitting element 33 cannot be smoothly mounted and fixed on the cover bottom wall 321.

Therefore, as shown in fig. 4, in the embodiment of the present invention, the orthographic projection of the first light source 2 on the cover bottom wall 321 is staggered from the orthographic projection of the light emitting element 33 on the cover bottom wall 321, that is, in the thickness direction of the cover bottom wall 321, the first light source 2 and the light emitting element 33 do not overlap, so that it is ensured that the substrate of the first light source 2 and the substrate of the light emitting element 33 do not collide when being fixed by screws, and the fixing of the first light source 2 and the light emitting element 33 on the cover bottom wall 321 can be smoothly completed.

In some embodiments, as shown in fig. 6-7, fig. 6 is an assembly schematic view of the first sidewall 322, the second sidewall 323, and the diffuser 31 in some embodiments of the present application, and fig. 7 is an enlarged view at I in fig. 6. One end of each first side wall 322, which is far away from the bottom wall 321 of the cover, is provided with a first slot 4, the first slot 4 extends along the second direction Y and penetrates through two ends of the first side wall 322, that is, the first slot 4 is linear, the diffusion piece 31 is of a plate-shaped structure, the diffusion piece 31 can be a micro-lens optical plate, the edge of the diffusion piece 31 is inserted into the first slot 4, so that the connection between the diffusion piece 31 and the light outlet window 30 can be completed, two second side walls 323 respectively block two ends of the first slot 4, the connection mode can facilitate the disassembly and assembly of the diffusion piece 31, and the assembly efficiency of the diffusion piece 31 is improved.

In some embodiments, as shown in fig. 7, the end of the first side wall 322 away from the bottom wall 321 of the housing is provided with a U-shaped plate 324, the U-shaped plate 324 encloses the first slot 4, the U-shaped plate 324 is formed by bending a flat plate, so that the first slot 4 formed by the U-shaped plate 324 can be more efficiently disposed, and the cross-sectional shape of the first slot 4 is U-shaped, so that the edge of the diffusing member 31 can be more rapidly inserted into the first slot 4 due to the plate-shaped structure of the diffusing member 31, thereby improving the assembly efficiency of the diffusing member 31.

The U-shaped plate 324 and the first side wall 322 are integrated, that is, the first side wall 322 and the U-shaped plate 324 can be integrally formed, so that the step of separately arranging the first slot 4 is omitted, and the connection between the first slot 4 and the first side wall 322 is more secure.

In some embodiments, the arrangement of the first slot 4 on the first sidewall 322 may be: a strip-shaped bump is arranged on the inner surface of one end of the first side wall 322 far from the cover bottom wall 321, the strip-shaped bump extends along the second direction Y and penetrates through two ends of the first side wall 322, and a first slot 4 is arranged on the strip-shaped bump, so that the edge of the diffuser 31 can be inserted into the first slot 4 to complete the connection with the light outlet window 30. It should be noted that, if the first slot 4 is disposed in this way, since the stripe-shaped protrusion blocks a portion of the light-emitting window 30, the area of the diffusion member 31 is smaller than that of the light-emitting window 30, so that the diffusion surface of the diffusion member 31 for the light emitted from the light-emitting window 30 becomes smaller, and the diffusion effect is reduced.

In some embodiments, as shown in fig. 4, the diffuser 31 is curved away from the bottom wall 321 of the cover along the first direction X. This increases the diffusion surface of the diffuser 31 for diffusing light, which is advantageous for improving the diffusion effect.

It should be noted that, the diffusing member 31 is a plate-shaped structure, and the first slot 4 is disposed obliquely, that is, the notch of the first slot 4 is far away from the bottom wall 321 of the cover relative to the bottom of the first slot 4, so that when a diffusing member 31 with an area larger than the area of the light-emitting window 30 is selected to be inserted into the first slot 4, the diffusing member 31 will automatically bend to a side far away from the bottom wall 321 of the cover, and certainly, the area of the diffusing member 31 cannot be too large, so that the diffusing member 31 is easily broken when being inserted into the first slot 4, and the assembly cost of the diffusing member 31 is increased.

It should be noted that the cover bottom wall 321 and the first side wall 322 may be an integral structure, may be designed to be separated and then fixedly connected, or may be detachably connected, and the embodiment of the present application is not limited. Each second side wall 323 is detachably connected with the first side wall 322 and the cover bottom wall 321, so that the second side wall 323 can be detached when the diffusion piece 31 is assembled, the end part of the first slot 4 is exposed, the edge of the diffusion piece 31 is convenient to insert, and after the diffusion piece 31 is inserted into the first slot 4, the second side wall 323, the first side wall 322 and the cover bottom wall 321 are connected together to form the complete second reflection cover 32, so that the assembly and disassembly convenience of the diffusion piece 31 is greatly improved, and the assembly efficiency of the diffusion piece 31 is improved.

In some embodiments, as shown in fig. 6, the specific implementation of the detachable connection of the second sidewall 323 with the first sidewall 322 and the cover bottom wall 321 may be: first lateral wall 322 and cover diapire 321 are structure as an organic whole, be equipped with second slot 5 on the second lateral wall 323, first lateral wall 322 inserts in the second slot 5, make second lateral wall 323 and first lateral wall 322, cover diapire 321 can dismantle and be connected, this kind of connected mode makes second lateral wall 323 and first lateral wall 322, the connection between the cover diapire 321 is firm more stable, and because second slot 5 spacing, can make things convenient for the quick counterpoint assembly of second lateral wall 323, realize with first lateral wall 322 and cover diapire 321 be connected.

In order to prevent the connection position between the second side wall 323 and the first side wall 322 and the cover bottom wall 321 from being dislocated, the width of the second slot 5 may be set to be the same as the wall thickness of the first side wall 322, so that the first side wall 322 may be just inserted into the second slot 5 and may not move, in order to further strengthen the connection stability between the second side wall 323 and the first side wall 322 and the cover bottom wall 321, reinforcing plates may be disposed at two ends of the cover bottom wall 321 along the second direction Y, and the second side wall 323 and the reinforcing plates are connected together by screws, so that the connection firmness between the second side wall 323 and the cover bottom wall 321 may be effectively enhanced.

In some embodiments, as shown in fig. 6, the second sidewall 323 is provided with a third slot 6 for inserting the diffuser 31. The diffusion piece 31 can completely cover the light-emitting window 30 formed by the second side wall 323 and the first side wall 322 in a surrounding manner, so that all light rays emitted from the light-emitting window 30 can be diffused through the diffusion piece 31, the glare value of the light rays can be reduced, and the stimulation to human eyes can be reduced in the sight range of the human eyes.

In some embodiments, as shown in fig. 2, the second light source 3 is detachably connected to the first reflective cover 1, that is, the first sidewall 322 of the second reflective cover 32 is detachably connected to the first reflective cover 1, or the second sidewall 323 of the second reflective cover 32 is detachably connected to the first reflective cover 1, so that the second light source 3 is greatly convenient to disassemble and assemble, and a worker can assemble the second light source 3 and then integrally install the second light source in the first reflective cover 1, which is beneficial to improving the assembly efficiency of the second light source 3. The first side wall 322 or the second side wall 323 can be detachably connected to the first reflection housing 1 by bolts, which is not only simple to operate, but also cost-effective.

It should be noted that the second light source 3 may be located in the middle of the first reflective cover 1, that is, the projection of the light exit window 30 on the indoor ground is located in the center of the projection of the first light exit port 10 on the indoor ground, so that the ambient light around the second light source 3 is uniform, and thus the illumination brightness of the illumination surface of the light reflected by the first reflective cover 1 on the indoor ground and the illumination surface of the light emitted by the light exit window 30 on the indoor ground is uniform and excessive, an excessively bright area does not appear in the line of sight of human eyes, which is beneficial to reducing the glare value and reducing the stimulation to human eyes.

In some embodiments, as shown in fig. 2, the light exit side of the first light source 2 is provided with a first lens 7 for diverging the light emitted by the first light source 2. Since the light emitted by the first light source 2 is reflected by the inner surface of the first reflector 1, the first lens 7 is disposed to diffuse the light emitted by the first light source 2 and irradiate the light onto the inner surface of the first reflector 1, so that the reflected light is more uniform. Here, the first lens 7 in the embodiment of the present application may be a 2D lens.

The overall height of the lighting device according to the embodiment of the present application is 70mm to 90mm, if the second side wall 323 is detachably connected to the first reflection housing 1, the width of the second reflection housing 32 in the first direction X is greater than 140mm, and the distance between the second lens 8 of the lighting device and the first reflection housing 1 is 20mm to 40mm.

In some embodiments, as shown in fig. 1 and 8, fig. 8 is a control schematic diagram of a controller in some embodiments of the present application. The lighting device of the embodiment of the present application further includes a controller 9, and the controller 9 is configured to control the magnitude of the driving current for driving the first light source 2 and the second light source 3 to emit light, so as to change the light output of the first light source 2 and the second light source 3. That is, the controller 9 can control the magnitude of the driving current for driving the first light source 2 and the light-emitting element 33 to emit light, so as to change the light output of the first light source 2 and the light-emitting element 33, thereby changing the glare value of the lighting device, and meeting the requirements of different application occasions on the glare value.

In some embodiments, the sum of the driving current for driving the first light source 2 to emit light and the driving current for driving the light emitting element 33 to emit light are kept constant, and correspondingly, the sum of the light outputs of the first light source 2 and the light emitting element 33 is also kept constant, in the embodiments of the present application, the sum of the driving current for driving the first light source 2 to emit light and the driving current for driving the light emitting element 33 to emit light is 400mA, and the sum of the light outputs of the first light source 2 and the light emitting element 33 is 4000lm.

As shown in table one, the table one is a comparison table of glare values of the light outputs of the first light source 2 and the light emitting element 33 at different ratios. In the table I, the direct illumination represents the light output of the light emitting element 33, the indirect illumination represents the light output of the first light source 2, the drive current I _ a represents the drive current for driving the first light source 2 to emit light, and the drive current I _ B represents the drive current for driving the light emitting element 33 to emit light.

Watch 1

In some embodiments, as shown in fig. 8, the specific implementation of changing the glare value of the lighting device may be: a driver 91 is provided, the driver 91 has two output terminals 912, the two output terminals 912 are respectively connected to the first light source 2 and the light emitting element 33, so as to respectively provide the driving currents to the first light source 2 and the light emitting element 33, the driver 91 further has a control interface 911, the control interface 911 is connected to the controller 9, the controller 9 outputs the target glare value to the driver 91, and the driver 91 searches the driving currents I _ a and I _ B corresponding to the target glare value from the table one, so as to change the magnitudes of the driving currents provided to the first light source 2 and the light emitting element 33, and change the ratio of the light outputs of the first light source 2 and the light emitting element 33.

As can be seen from the first table, the larger the proportion of the light output of the light emitting element 33 is, the smaller the glare value of the lighting device is, and the smaller the illumination angle is, so that the central light intensity is larger, and the brightness of the illumination surface of the lighting device on the indoor floor is higher; conversely, the greater the proportion of light output of the first light source 2, the greater the glare value of the lighting device, and the greater the ambient light, the greater the angle of illumination; by adjusting the ratio of the light output of the first light source 2 to the light output of the light emitting element 33, the glare value of the lighting device can be changed to meet the lighting requirements of the lighting device in different applications.

When the light output of the light emitting element 33 is 4000lm and the light output of the first light source 2 is 0lm, the isocandela curve of the light emitting element 33 is shown in fig. 9, and the isocandela curve of the illumination surface of the lighting device on the indoor floor is shown in fig. 10; when the light output of the light emitting element 33 is 0lm and the light output of the first light source 2 is 4000lm, the isocandela curve of the first light source 2 is shown in fig. 11, and the isocandela curve of the illumination surface of the lighting device on the indoor floor is shown in fig. 12.

As can be seen by comparing fig. 9 and 11, the larger the proportion of the light output of the light emitting element 33 is, the larger the central light intensity is, and as can be seen by comparing fig. 10 and 12, the larger the proportion of the light output of the light emitting element 33 is, the higher the brightness of the illuminated surface of the lighting device on the indoor floor is.

If the glare value of the lighting device is 24.4, it means that the driving current for driving the first light source 2 to emit light is 400mA, and the driving current for driving the light emitting element 33 to emit light is 0mA, that is, only the light emitted by the first light source 2 is reflected by the first reflective cover 1 and then exits the first light outlet 10. When the glare value of the lighting device needs to be changed from 24.4 to 18.6, the driving current for driving the first light source 2 to emit light needs to be adjusted to 100mA, and the driving current for driving the light emitting element 33 to emit light needs to be adjusted to 300mA, so that the change of the glare value of the lighting device can be realized.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A lighting device, comprising a first reflector (1), and a first light source (2) and a second light source (3) disposed within the first reflector (1);

one side of the first reflector (1) is provided with a first light outlet (10), and the first reflector (1) is configured to reflect the light rays emitted by the first light source (2) out of the first light outlet (10);

the second light source (3) comprises a light-emitting window (30) and a diffusion piece (31) arranged at the light-emitting window (30), and the second light source (3) is configured to enable light emitted by the light-emitting window (30) to be directly emitted from the first light-emitting port (10) after being diffused by the diffusion piece (31).

2. The lighting device of claim 1,

the second light source (3) comprises a second reflector (32) and a light emitting element (33) arranged in the second reflector (32), the light outlet window (30) is located at one end, close to the first light outlet (10), of the second reflector (32), and the second reflector (32) is configured to reflect a part of light emitted by the light emitting element (33) out of the light outlet window (30).

3. The lighting device of claim 2,

the second reflection cover (32) comprises a cover bottom wall (321) opposite to the light outlet window (30), the first light source (2) is arranged on the outer surface of the cover bottom wall (321), and the light emitting element (33) is arranged on the inner surface of the cover bottom wall (321).

4. A lighting device as recited in claim 3,

the orthographic projection of the first light source (2) on the cover bottom wall (321) is staggered with the orthographic projection of the light-emitting element (33) on the cover bottom wall (321).

5. A lighting device as recited in claim 3 or claim 4,

the second reflector (32) further comprises two first side walls (322) oppositely arranged along a first direction (X) and two second side walls (323) oppositely arranged along a second direction (Y), wherein every two of the first direction (X), the second direction (Y) and the thickness direction (Z) of the bottom wall (321) of the reflector are vertical;

one end, far away from the cover bottom wall (321), of each first side wall (322) is provided with a first slot (4), the first slot (4) extends along the second direction (Y) and penetrates through two ends of the first side wall (322), the diffuser (31) is of a plate-shaped structure, and the edge of the diffuser (31) is inserted into the first slot (4);

the two second side walls (323) respectively block two ends of the first slot (4), and each second side wall (323) is detachably connected with the first side wall (322) and the cover bottom wall (321).

6. The lighting device of claim 5,

one end, far away from the cover bottom wall (321), of the first side wall (322) is provided with a U-shaped plate (324), the U-shaped plate (324) encloses the first slot (4), and the first side wall (322) and the U-shaped plate are of an integral structure.

7. The lighting device of claim 5,

along the first direction (X), the diffuser elements (31) are arranged in a curved manner on the side facing away from the hood base wall (321), and/or the angle (alpha) between each first side wall (322) and the hood base wall (321) is obtuse.

8. The lighting device of claim 5,

the first side wall (322) and the cover bottom wall (321) are of an integral structure, a second slot (5) is formed in the second side wall (323), the first side wall (322) is inserted into the second slot (5), and the second side wall (323) is detachably connected with the first side wall (322) and the cover bottom wall (321);

and/or a third slot (6) for inserting the diffusion piece (31) is arranged on the second side wall (323).

9. A lighting device as recited in any one of claims 2-4,

a first lens (7) used for diverging the light rays emitted by the first light source (2) is arranged on the light emitting side of the first light source (2);

and/or a second lens (8) used for converging the light rays emitted by the light-emitting element (33) is arranged on the light-emitting side of the light-emitting element (33).

10. The lighting device according to any one of claims 1 to 4,

the lighting device further comprises a controller (9), the controller (9) being configured to control a magnitude of a drive current driving the first light source (2) and the second light source (3) to emit light to vary a light output of the first light source (2) and the second light source (3);

and/or the second light source (3) is detachably connected with the first reflector (1).

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