CN109973948B

CN109973948B - Lighting device

Info

Publication number: CN109973948B
Application number: CN201910276827.8A
Authority: CN
Inventors: 赵玉新; 谭兴臣; 寸加春
Original assignee: Opple Lighting Co Ltd; Suzhou Op Lighting Co Ltd
Current assignee: Opple Lighting Co Ltd; Suzhou Op Lighting Co Ltd
Priority date: 2019-04-08
Filing date: 2019-04-08
Publication date: 2024-05-31
Anticipated expiration: 2039-04-08
Also published as: CN109973948A

Abstract

The invention discloses a lighting device, and belongs to the technical field of lighting. The lighting device comprises: the device comprises a shell, a light source module, a first optical element, a second optical element and a non-light source module; the shell and the first optical element enclose a first light source cavity; the light source module is arranged in the first light source cavity and comprises a light source plate and a light-emitting unit arranged on the light source plate; the second optical element is arranged in the first light source cavity, and encloses a second light source cavity with the light source module, wherein the second light source cavity accommodates the non-light source module and at least part of the light emitting units on the light source plate.

Description

Lighting device

Technical Field

The invention relates to the technical field of illumination, in particular to an illumination device.

Background

The lighting lamp is provided with a light source module arranged in the light source cavity, and other non-light source modules such as a power source module or an induction module and the like which cannot emit light.

Typically, the non-light source modules are not mounted in the light source cavity. However, in some lighting devices, the non-light source module needs to be installed in the light source cavity, and the light emitting surface of the lighting device generates shadows due to interference of the non-light source module on the light source.

Disclosure of Invention

In order to solve the problems, the present invention provides a lighting device.

The lighting device provided by the invention comprises: the device comprises a shell, a light source module, a first optical element, a second optical element and a non-light source module; the shell and the first optical element enclose a first light source cavity; the light source module is arranged in the first light source cavity and comprises a light source plate and a light-emitting unit arranged on the light source plate; the second optical element is arranged in the first light source cavity, and encloses a second light source cavity with the light source module, wherein the second light source cavity accommodates the non-light source module and at least part of the light emitting units on the light source plate.

In the lighting device, the housing includes a light outlet, a mounting surface opposite to the light outlet, and a connection surface extending from an edge of the mounting surface toward the light outlet; the light source module is arranged on the mounting surface and emits light rays towards the light outlet, and the first optical element is arranged on the light outlet.

In the above lighting device, the light source plate includes a front surface facing the light outlet; the lighting device further includes a reflective film including a first reflective surface and a second reflective surface extending from an edge of the first reflective surface; the first reflecting surface is attached to the front surface and provided with an avoidance hole for avoiding the light-emitting unit, and the second reflecting surface is attached to the connecting surface.

In the lighting device, the shell comprises a first clamping groove surrounding the light outlet, an opening of the clamping groove faces to the axis of the light outlet, and the edge of the first optical element is connected in the first clamping groove; the reflecting film comprises a third reflecting surface, and the third reflecting surface is connected with the second reflecting surface and is arranged in the first clamping groove; the third reflective surface is adjacent to the connection surface with respect to the first optical element.

In the lighting device, the housing further comprises a power bottom wall facing away from the mounting surface, a power opening opposite to the power bottom wall, and a power side wall extending from the edge of the power bottom wall to the direction of the power opening; the power supply bottom wall, the power supply side wall and the power supply opening are surrounded to form a power supply cavity; the light source module is provided with a first through hole, and the mounting surface is provided with a second through hole communicated with the first through hole and the power cavity; the non-light source module extends from the second light source cavity to the first through hole, the second through hole and the power source cavity in sequence.

In the lighting device, the non-light source module comprises a mounting shell and a functional device, wherein the functional device is positioned in the second light source cavity and is sleeved in the mounting shell, and the mounting shell is made of a light-transmitting material.

In the lighting device, the mounting shell comprises a first main body, and the first main body is sleeved in the first through hole and the second through hole; the first main body comprises a first end and a second end which are oppositely arranged along the axial direction of the first main body, and the first end and the second end are respectively positioned in the second light source cavity and the power supply cavity; the mounting shell further comprises a bending section, wherein the bending section is connected to the first end and is parallel to the extending direction of the light source plate; the functional device extends into the bending section.

The lighting device comprises a first main body, a second main body, a first limiting part, a second limiting part and a lighting device, wherein the first limiting part and the second limiting part are arranged on the outer wall of the first main body in sequence along the axis of the first main body; the first limiting part is positioned in the second light source cavity and is abutted against the light source plate, the second limiting part is close to the second end, and the cross section of the first main body at the second limiting part is deformable, so that the second limiting part is suitable for penetrating through the first through hole and the second through hole, then is positioned in the power source cavity and is abutted against the power source bottom wall.

In the lighting device, the non-light source module further comprises an elastic piece, and the elastic piece is clamped between the functional device and the inner wall of the mounting shell.

In the lighting device, at least one circle of the light emitting units encircle the non-light source module in the second light source cavity.

In the lighting device, at least one circle of the light emitting unit surrounds the second optical element in the first light source cavity.

In the above lighting device, when the housing is cylindrical, the second light source cavity is located at the center of the first light source cavity.

In the above lighting device, the projection of the non-light source module on the light source board avoids the light emitting unit.

In the lighting device, the minimum distance from the second optical element to the first optical element is greater than or equal to one half of the distance from the light source plate to the first optical element.

In the lighting device, the second optical element is a second diffusion cover, the light transmittance of the second diffusion cover is more than 75%, and the haze is more than 90%.

In the lighting device, the edge of the second optical element is connected with the connecting surface and/or the light source plate, and the second light source cavity is a closed cavity.

In the lighting device, the second optical element includes an optical portion and an edge portion surrounding the optical portion, and the optical portion covers the non-light source module and the light emitting unit; the edge part comprises a first edge, a second edge and a third edge and a fourth edge which are oppositely arranged, wherein the first edge and the second edge are connected with the light source plate, and the third edge and the fourth edge are arc-shaped and are attached to the connecting surface.

In the above lighting device, the second optical element has a film structure, and the thickness of the second optical element is 0.1 mm to 0.3 mm.

According to the lighting device, the second light source cavity is arranged in the first light source cavity, the second light source cavity accommodates the non-light source module and at least part of the light emitting units, when the light emitting units of the lighting device are lightened, the light rays emitted by the light emitting units in the second light source cavity weaken the shadow of the non-light source module primarily, no obvious shadow exists in the light rays emitted by the second optical element, and further, the light rays emitted by the second optical element are mixed in the first light source cavity, so that the shadow caused by the non-light source module can be weakened further, and the light emitting surface of the lighting device can emit light uniformly.

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 do not constitute a limitation on the invention. In the drawings:

FIG. 1 is a schematic view of an illumination device according to an embodiment of the present invention;

FIG. 2 is a schematic view of a lighting device according to another embodiment of the present invention;

FIG. 3 is a cross-sectional view A-A of the lighting device of FIG. 1;

FIG. 4 is an exploded view of the lighting device of FIG. 1;

FIG. 5 is a B-B cross-sectional view of the lighting device of FIG. 1;

FIG. 6 is an exploded view of the non-light source module of FIG. 3;

fig. 7 is a cross-sectional view of the housing of fig. 3.

Reference numerals:

100-lighting device;

10-a housing; 11-a light outlet; 12-mounting surface; 121-a second through hole; 13-a connection face; 14-a power supply bottom wall; 15-a power supply opening; 16-power side walls; 17-connecting walls;

20-a light source module; 21-a light source plate; 22-a light emitting unit; 23-a first through hole;

30-a first optical element; 31-a first diffusion film; 32-a lens;

40-a second optical element; 41-optic; 42-first side; 43-second side; 44-third side; 45-fourth side;

50-a non-light source module; 51-mounting a shell; 511-a first body; 5111-a first end; 5112-second end; 52-a functional device; 53-bending section; 54-mounting holes; 55-a first limiting part; 551-first limit surface; 56-a second limiting part; 561-second limit surface; 57-U-shaped groove; 58-elastic member;

61-a first light source cavity; 62-a second light source cavity; 63-a power supply cavity; 64-void; 65-a clamping groove; 651-hook opening;

A 70-reflective film; 71-a first reflective surface; 711-avoidance holes; 72-a second reflective surface; 73-a third reflective surface;

81-a power module; 82-a control module; 83-a power cover; 84-mounting; 841-a second body; 842-mounting edges;

91-a first card slot; 911-a first wall; 912-a second wall; 913—a third wall; 921-a first cross-sectional end; 922-a second cross-sectional end; 93-a second clamping groove; 931-fourth wall; 932-a fifth wall; 941 to a sixth wall; 942-seventh wall; 95-baffle; 951-positioning projections.

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 specific embodiments of the present invention and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1 to 5, an embodiment of the present invention discloses a lighting device 100 including a housing 10, a light source module 20, a first optical element 30, a second optical element 40, and a non-light source module 50. The housing 10 and the first optical element 30 enclose a first light source cavity 61, the light source module 20 is disposed in the first light source cavity 61, and is configured to emit light, and the emitted light can be emitted through the first optical element 30. The light source module 20 includes a light source plate 21 and light emitting units 22 disposed on the light source plate 21, and the light emitting units 22 may be uniformly arranged on the light source plate 21. The second optical element 40 is disposed in the first light source cavity 61 and encloses a second light source cavity 62 with at least a portion of the light source modules 20, and the second light source cavity 62 accommodates the non-light source modules 50 and at least a portion of the light emitting units 22 on the light source board 21.

In the lighting device 100, the second light source cavity 62 is disposed in the first light source cavity 61, the second light source cavity 62 accommodates the non-light source module 50 and at least part of the light emitting units 22, when the light emitting units 22 of the lighting device 100 are lighted, the light emitted by the light emitting units 22 in the second light source cavity 62 primarily weakens the shadow of the non-light source module 50, no obvious shadow exists in the light emitted by the second optical element 40, and further, the light emitted by the second optical element 40 is mixed in the first light source cavity 61, so that the shadow caused by the non-light source module 50 can be further weakened, and the light emitting surface of the lighting device 100 can emit light uniformly.

In the lighting device 100 of the embodiment of the present invention, the light emitting unit 22 may be an LED, or other common light emitting elements, which will not be described herein.

The housing 10 may include a light outlet 11, a mounting surface 12 provided opposite to the light outlet 11, and a connection surface 13 extending from an edge of the mounting surface 12 toward the light outlet 11. The light source module 20 is disposed on the mounting surface 12, and specifically, a light source board 21 of the light source module 20 includes a front surface for mounting the light emitting unit 22, and a back surface opposite to the front surface. The back surface may be attached to the mounting surface 12, and the front surface is directed toward the light outlet 11, so that the outgoing light of the light emitting unit 22 is emitted toward the light outlet 11. The first optical element 30 is disposed on the light outlet 11, and is configured to distribute light emitted from the light source module 20. In the first light source cavity 61, the outgoing light portion of the light source module 20 may directly strike the first optical element 30, and another portion may be reflected by the connection surface 13 and then set up the first optical element 30, that is, the connection surface 13 plays a role in reflection. The extending direction of the mounting surface 12 is a horizontal plane square, the dimension of the mounting surface 12 in the horizontal direction is smaller than the dimension of the light outlet 11 in the horizontal direction, and the connecting surface 13 is inclined.

The first optical element 30 includes a first diffusion film 31 or a lens 32, or the first diffusion film 31 and the lens 32. The lens 32 may be a light control prism film.

In order to increase the utilization of the light within the first light source chamber 61, the lighting device 100 further comprises a reflective film 70. The surface of the reflective film 70 may implement specular reflection, and specifically, the reflective film 70 includes a first reflective surface 71, and a second reflective surface 72 extending from an edge of the first reflective surface 71. The first reflecting surface 71 is attached to the front surface of the light source plate 21, and has an avoiding hole 711 for avoiding the light emitting unit 22 so that the emitted light is not blocked by the reflecting film 70. The second reflecting surface 72 is attached to the connecting surface 13, so that the outgoing light of the light emitting unit 22 can reach the first optical element 30 with high reflectivity on the second reflecting surface 72. Of course, the second reflecting surface 72 may also have an escape hole 711 for escaping from the non-light source module 50.

In addition, the light source board 21 may be connected to the mounting surface 12 by a fastener, and the first reflecting surface 71 may further be provided with a avoidance fastener and a avoidance hole 711 for avoiding the non-light source module 50.

As a modification, in order to improve the light efficiency, the surface roughness of the connection face 13 may be improved, for example, the surface of the connection face 13 may be mirror-finished without providing the reflective film 70, to reduce the loss of light on the connection face 13.

The housing 10 further includes a power bottom wall 14 facing away from the mounting surface 12, a power opening 15 disposed opposite the power bottom wall 14, and a power side wall 16 extending from an edge of the power bottom wall 14 toward the power opening 15. The power bottom wall 14, the power side wall 16 and the power opening 15 enclose a power cavity 63, wherein the power opening 15 is opposite to the light outlet 11, and a third through hole (not shown) is formed in the power bottom wall 14 and is communicated with the first through hole 23. The lighting device 100 may further include a power module 81 and a control module 82, and the power module 81 and the control module 82 may be disposed within the power cavity 63. The power module 81 is electrically connected to the light source module 20, and the control module 82 may be electrically connected to the control module 82 and the non-light source module 50.

The light source module 20 is provided with a first through hole 23, the mounting surface 12 is provided with a second through hole 121 communicated with the first through hole 23 and the power cavity 63, and the non-light source module 50 can sequentially extend from the second light source cavity 62 to the first through hole 23, the second through hole 121 and the power cavity 63.

Specifically, referring to fig. 6, the non-light source module 50 includes a mounting case 51 and a functional device 52, and a portion of the functional device 52 located in the second light source chamber 62 should be sleeved in the mounting case 51. The mounting case 51 is made of a light-transmitting material to minimize the influence on light and improve the light efficiency of the lighting device 100.

The functional device 52 may be a communication device or an antenna for transmitting signals, such as a bluetooth module, an infrared module, etc. In order to avoid too close a distance between the metal device and the communication module, the mounting shell 51 of the socket functional device 52 should be of an insulating material, such as PC or PMMA. Of course, the functional device 52 may also be a sensing device or sensor for sensing data in the detection environment.

The mounting case 51 includes a first body 511, and the first body 511 may be cylindrical and fit in the first through hole 23 and the second through hole 121. Along the axial direction of the first body 511, the first body 511 includes a first end 5111 and a second end 5112 disposed opposite to each other, and the first end 5111 and the second end 5112 are located in the second light source chamber 62 and the power source chamber 63, respectively. The mounting may further include a bending section 53, where the bending section 53 is connected to the first end 5111 and is parallel to the extending direction of the light source plate 21, so as to minimize interference influence on the emitted light of the light source module 20. Of course, the projection of the bending section 53 on the light source plate 21 should avoid the light emitting unit 22. The functional device 52 may extend partially in the bending section 53. The first body 511 and the bent section 53 each have a mounting hole 54 therein which communicate with each other so that the functional device 52 mounted therein can function normally.

The mounting case 51 further includes a first stopper 55 and a second stopper 56 provided on an outer wall of the first body 511 and sequentially provided along an axis of the first body 511. The first limiting portion 55 is disposed near the first end 5111, and specifically, the first limiting portion 55 is disposed in the second light source cavity 62 and abuts against the light source plate 21, so as to limit displacement of the non-light source module 50 from the light source module 20 to the direction of the power source cavity 63.

The axis of the first main body 511 is perpendicular to the extending direction of the mounting surface 12, and the external dimension of the cross section of the first main body 511 where the first limiting portion 55 is located is greater than the cross section dimension of the first through hole 23, so that the first limiting portion 55 abuts against the light source plate 21. The first limiting portion 55 has a wedge-shaped structure, and has a first limiting surface 551 facing the light source plate 21.

The second limiting portion 56 is close to the second end 5112, the cross section of the first main body 511 at the second limiting portion 56 is deformable, and the cross section of the first main body 511 at the second limiting portion 56 can be changed, so that the second limiting portion 56 can pass through the first through hole 23 and the second through hole 121, then be located in the power cavity 63 and abut against the power bottom wall 14. The second limiting portion 56 may have a wedge-shaped structure, and has a second limiting surface 561 disposed opposite to the first limiting surface 551, where the second limiting surface 561 abuts against the power bottom wall 14 to limit the displacement of the non-light source module 50 from the power cavity 63 toward the light source module 20.

The number of the first limiting portion 55 and the second limiting portion 56 may be two, and they are symmetrically arranged. Of course, the number of the first and second stopper portions 55 and 56 may be 1, 3, or the like.

Specifically, two symmetrical U-shaped grooves 57 are disposed on the wall of the first body 511 near the second end 5112 along the axial direction, and the connecting line of the two U-shaped grooves 57 is perpendicular to the connecting line of the two second limiting portions 56. When an external force acts on the second limiting portion 56 or the second end 5112 inward along the radial direction of the first body 511, the first body 511 can deform inward along the radial direction due to the U-shaped groove 57, so that the distance between the two second limiting portions 56 becomes smaller, and the second limiting portion 56 does not prevent a part of the first body 511 from penetrating through the first through hole 23 and the second through hole 121 to the light source cavity; when the external force in the radial direction of the first body 511 disappears, the deformation of the first body 511 is cancelled, and the distance between the two second limiting portions 56 becomes larger to be normal, so that the second limiting portions 56 can abut against the power supply bottom wall 14.

This is achieved by providing the first body 511 with a U-shaped groove 57 such that a portion of the first body 511 adjacent the second end 5112 is radially deformable. As a modification, instead of forming the U-shaped groove 57 in the first body 511, the second stopper portions 56 may be formed as elastic portions that can expand and contract in the radial direction of the first body 511, that is, when an external force is applied in the radial direction of the first body 511, the two second stopper portions 56 contract to pass through the first through hole 23 and the second through hole 121, and after the external force is removed, the two second stopper portions 56 are reset to abut against the power supply bottom wall 14.

As described above, the first body 511 has a columnar shape. Further, the first body 511 is circumferentially fixed in the first through hole 23, or the second through hole 121, or the third through hole, so that the first body 511 cannot rotate along the axis, achieving circumferential positioning of the first body 511. Specifically, the image of the cross section of the first body 511 is non-circular, and at least one of the first through hole 23, the second through hole 121, and the third through hole is a non-circular hole and can restrict the rotation of the first body 511. For example, the cross section of the first body 511 is drum-shaped (i.e., the circle removes two bows), square, rectangular, or other patterns that cannot be rotated relative to each other, and at least one of the first through hole 23, the second through hole 121, and the third through hole is drum-shaped, square, rectangular, or other patterns that cannot be rotated relative to each other. In the embodiment of the present invention, the hole shape of the second through hole 121 on the mounting surface 12 may be the same as the cross-sectional shape of the first body 511, and the first through hole 23 and the third through hole may be circular holes.

The non-light source module 50 may further include an elastic member 58, the elastic member 58 being interposed between the functional device 52 and the inner wall of the first body 511 of the mounting case 51. Specifically, the elastic member 58 may be hollow cylindrical, and is disposed in the mounting shell 51 after the functional device is sleeved, so as to facilitate the mounting of the functional device into the mounting shell 51 without damaging the functional device. Wherein the elastic member 58 may be made of a material capable of being deformed by extrusion, such as silicone.

In order to better eliminate shadows of the non-light source modules 50 in the second light source chamber 62, at least one turn of the light emitting units 22 in the second light source chamber 62 surrounds the non-light source modules 50. Specifically, the less the number of turns of the light emitting unit 22 surrounding the non-light source module 50 in the second light source chamber 62, the higher the light efficiency of the lighting device 100. Thus, the second light source cavity 62 may be a ring of light emitting units 22 surrounding the non-light source module 50; of course, in order to make the outgoing light of the second light source cavity 62 more uniform, the light emitting unit 22 of two or three turns or the like may surround the non-light source module 50. For example, in the lighting device 100 having two rows of light emitting units 22 on the light source module 20, the non-light source module 50 should be disposed between the two rows of light emitting units 22, instead of at the edge of the light source module 20, so that at least one row of light emitting units 22 is disposed on two sides of the non-light source module 50, as shown in fig. 4, and the first through hole 23 is disposed between the two rows of light emitting units 22.

In order to enable uniform mixing of the outgoing light of the second light source chamber 62 in the first light source chamber 61, at least one turn of the light emitting unit 22 surrounds the second optical element 40 in the first light source chamber 61, i.e. at least one turn of the light emitting unit 22 surrounds the second light source chamber 62. Specifically, in the lighting device having the cylindrical housing, at least one turn of the light emitting unit 22 may be provided at the periphery of the second light source chamber 62; of course, in order to improve the light efficiency, the higher the number of the light emitting units 22 surrounding the second light source chamber 62 in the first light source chamber 61, the better, there may be two or three turns of the light emitting units 22 surrounding the second light source chamber 62, and so on. In the elongated lighting device, as shown in fig. 4, when there are only two rows of light emitting units 22 on the light source module 20 along the extending direction of the housing 10, it is obviously impossible to ensure that the light emitting units 22 surround the second light source cavity 62; however, in the elongated lighting device, if the light source module 20 has four rows of light emitting units 22 arranged in more rows along the extending direction of the housing 10, two rows of light emitting units 22 may be further arranged outside the second light source cavity 62, and the two rows of light emitting units 22 are disposed on two sides of the second light source cavity 62, that is, two rows of light emitting units 22 are implemented to surround the second light source cavity 62.

In particular, in the illumination device 100 having a cylindrical housing, where the center point of the outgoing light spot is generally brightest, the second light source chamber 62 may be placed at the center position of the first light source chamber 61 without significantly affecting the outgoing light spot. In the elongated lighting device 100, the position of the second light source cavity 62 along the extending direction of the housing 10 does not have a significant effect on the outgoing light spot, and for convenience of wire connection of the non-light source module 50, the second light source cavity 62 may be generally disposed near two ends (the first cross-sectional end 921 or the second cross-sectional end 922) disposed opposite to each other in the extending direction of the housing 10, that is, away from the center along the extending direction of the housing 10, and as shown in fig. 3, the second light source cavity 62 may be disposed near one end in the extending direction of the housing 10.

Further, the projection of the non-light source module 50 on the light source board 21 should avoid the light emitting unit 22 to avoid causing obvious shadows.

In practical applications, when the functional device 52 in the non-light source module 50 is a communication module, the antenna of the communication module may be disposed in the second light source cavity 62, and the rest of the non-light source module 50 should be as close to the light source plate 21 as possible under the condition that the structure allows and does not affect the transmission of communication signals, so as to reduce the shielding of the non-light source module 50 to the light emitting unit 22 to form a light shadow as much as possible.

In order to reduce the probability of occurrence of shadows on the light emitting surface and to increase the light of the lighting device 100, the second optical element 40 should have a sufficient distance to the first optical element 30. I.e. the second optical element 40 is as close to the light source plate 21 as possible, for which reason the tip of the non-light source module 50 should be adjacent to the second optical element 40, e.g. in contact with the second optical element 40 or at a small distance.

The minimum distance of the second optical element 40 to the first optical element 30 is greater than or equal to one of the two distances of the light source plate 21 to the first optical element 30. Specifically, the minimum distance from the second optical element 40 to the first optical element 30 may be greater than or equal to one of three times the distance from the light source plate 21 to the first optical element 30, or the minimum distance from the second optical element 40 to the first optical element 30 may be greater than or equal to one of four times the distance from the light source plate 21 to the first optical element 30, or the like.

Similarly, the second optical element 40 may be a second diffusion cover having a high light transmittance and a haze, and the specific light transmittance is above 75% and the haze is above 90%. For example, the light transmittance is 80% or more and the haze is 95% or more.

The edge of the second optical element 40 may connect the connection face 13 of the housing 10 and the light source plate 21; for example, an edge of the second optical element 40 may be partly connected to the connection face 13, and partly connected to the front face of the light source plate 21; the edges of the second optical element 40 may also be fully connected to the front or connection face 13 of the light source plate 21. Specifically, the edge of the second optical element 40 should be attached to the connection surface 13 or the light source plate 21, so that the second light source cavity 62 is a closed cavity, and further, no obvious variation of the illumination brightness is generated at the edge of the second optical element 40, so that the light brightness transitions uniformly. It should be noted that, in practice, since the second reflecting surface 72 of the reflecting film 70 may be provided on the connecting surface 13, the edge of the second optical element 40 may be partially connected to the second reflecting surface 72.

Of course, in practice, the second optical element 40 may cover all the light emitting units 22 on the light source board 21, but the emitted light of all the light emitting units 22 passes through the second optical element 40 and then is emitted to the first optical element 30, so that the light efficiency of the lighting device 100 is low.

The second optical element 40 may be mounted in the first light source chamber 61 by means of adhesive. Of course, the second optical element 40 may be mounted by a common connection such as a threaded connection, a snap-fit connection, or the like.

The second optical element 40 may be a thin and light diffusion film, that is, the second optical element 40 is a film structure, and may be cut to obtain different shapes and then bent to deform to cover the non-optical module 50 and the light emitting unit 22. In particular, the thickness of the second optical element 40 may be between 0.1 mm and 0.3 mm, for example 0.2 mm. Of course, the second optical element 40 may also be a light distribution element with a common thickness, that is, a formed light distribution element, and the thickness thereof may be between 0.7 mm and 1.2 mm.

The second optical element 40 includes an optical portion 41 for light distribution and an edge portion (not numbered) surrounding the optical portion. The optical portion 41 covers the non-light source module 50 and part of the light emitting unit 22, and the edge portion is used for connecting with the light source board or the housing to fix the second optical element 40.

The lighting device 100 further comprises a power cover 83, the power cover 83 covering or covering the power opening 15.

The housing 10 may also include a void 64 disposed between the power bottom wall 14 and the mounting surface 12. Of course, as a modification, the mounting surface 12 may be one surface of the power supply bottom wall 14, that is, the light source module 20 is mounted on the mounting surface 12, and the power supply module 81 is mounted on a surface facing away from the mounting surface 12.

The housing 10 may also include a connecting wall 17, the connecting wall 17 connecting the power bottom wall 14 and the mounting surface 12 and isolating the non-light source module 50 from the void 64. The casing 10 further includes two hook grooves 65 disposed at the periphery of the power cavity 63, and the number of the hook grooves 65 may be two and symmetrically disposed. The hook groove 65 has a hook opening 651 disposed in the same direction as the power supply opening 15. The mounting member 84 of the lighting device 100 may pass through the hook opening 651 and hook the hook groove 65. The lighting device 100 may be hung from a ceiling by the mount 84.

In the embodiment of the present invention, the housing 10 of the lighting device 100 may be elongated, the light outlet 11 and the mounting surface 12 are also elongated, and the connection surface 13 is an inclined surface disposed opposite to each other. As a modification, the housing 10 of the lighting device 100 may be circular, and the corresponding light outlet 11 and the mounting surface 12 may be circular, and the connection surface 13 may be conical. Of course, the housing 10 may have other shapes, and the corresponding light outlet 11 and mounting surface 12 may have other shapes.

Continuing with the case 10 in the form of an elongated shape, the case 10 includes a first transverse end 921 and a second transverse end 922 (see fig. 4) disposed opposite to each other along the extending direction of the case 10.

Referring to fig. 4 and 7, the housing 10 includes a first slot 91 surrounding the light outlet 11, and an opening of the first slot 91 faces an axis of the light outlet 11. Specifically, the openings of the two first clamping grooves 91 are disposed opposite to each other, and the edges of the first optical element 30 disposed opposite to each other are connected to the first clamping grooves 91. The reflective film 70 includes a third reflective surface 73, and the third reflective surface 73 is connected to the second reflective surface 72 and disposed in the first slot 91. The third reflective surface 73 is adjacent to the connection surface 13 with respect to the first optical element 30. It should be noted that, the light outlet 11 may be partially surrounded by the first clamping groove 91, and particularly when the light outlet 11 is square or rectangular, the first clamping groove 91 is disposed along the extending direction of the housing 10 (from the first cross-sectional end 921 to the second cross-sectional end 922), and specifically, the first clamping groove 91 may be two symmetrically disposed and have opposite openings. The first slot 91 is surrounded by a first wall surface 911, a second wall surface 912, and a third wall surface 913, the second wall surface 912 may be perpendicular to the mounting surface 12 and disposed opposite to the opening of the first slot 91, and the first wall surface 911 and the third wall surface 913 may be disposed opposite to and parallel to the mounting surface 12. The first optical element 30 may be inserted into the first slot 91 from the first cross-sectional end 921 or the second cross-sectional end 922 and cover the light outlet 11.

The mounting surface 12 and the connecting surface 13 of the housing 10 may each extend from the first cross-sectional end 921 to the second cross-sectional end 922, and a second clamping groove 93 is connected between the mounting surface 12 and the connecting surface 13. The second card slot 93 has a fourth wall 931 and a fifth wall 932, the fourth wall 931 connecting an edge of the mounting face 12 and being perpendicular to the mounting face 12. The fifth wall surface 932 is connected between the fourth wall surface 931 and the connection surface 13 and is disposed opposite the mounting surface 12. The light source module 20 may be plugged into the second card slot 93 from the first cross-sectional end 921 or the second cross-sectional end 922, so that the light source board 21 is clamped between the fourth wall 931, the fifth wall 932 and the mounting surface 12.

The housing 10 further includes a sixth wall surface 941 located on the rear side of the mounting surface 12, and the power supply bottom wall 14 includes a power supply bottom surface facing the power supply opening 15 and a seventh wall surface 942 located on the rear side of the power supply bottom surface and disposed opposite the sixth wall surface 941. The housing 10 includes a gap 64 between the power bottom wall 14 and the mounting surface 12, that is, a gap exists between the sixth wall 941 and the seventh wall 942. The sixth wall 941 and the seventh wall 942 may be disposed in parallel, and the extending direction of the connecting wall 17 may be perpendicular to the sixth wall 941 and the seventh wall 942. The extending direction of the two connecting walls 17 is the same as that of the housing 10, and on the cross section of the housing 10, the two connecting walls are respectively disposed at two sides of the non-light source module 50 to isolate the non-light source module 50 from the gap 64.

Referring to fig. 3 to 5, the second optical element 40 is in a straight line in a sectional view perpendicular to the extending direction of the housing 10. The second optical element 40 is arched in cross-section along the extending direction of the housing 10. Specifically, the edge portion of the second optical element 40 includes oppositely disposed first and second sides 42, 43, and oppositely disposed third and fourth sides 44, 45. The first edge 42 and the second edge 43 may be flat, and may be attached to and connected with the light source board 21, and the third edge 44 and the fourth edge 45 may be arc-shaped and attached to the housing. Specifically, the first edge 42 and the second edge 43 may be connected to the light source board 21 by bonding, clamping or screwing, and the third edge 44 and the fourth edge 45 may be connected to the housing 10 by bonding, clamping or screwing, or may be adjacent to the housing 10 without a connection relationship with the housing 10.

The lighting device 100 further comprises two baffles 95, the two baffles 95 covering the first transverse end 921 and the second transverse end 922, respectively. The baffle 95 has an inner surface facing the housing 10, the inner surface having two positioning protrusions 951, the two positioning protrusions 951 being insertable into the void 64, respectively, to conform the inner surface to the first cross-sectional end 921 or the second cross-sectional end 922.

The mounting member 84 includes a second body 841 and mounting edges 842, the two mounting edges 842 being disposed at opposite ends of the second body 841. The second body 841 is located at a side of the power cavity 63 away from the first light cavity 61, and the mounting edge 842 passes through the hook opening and hooks the hook groove 65. The extending direction of the hook groove 65 and the hook opening is the same as the extending direction of the housing 10, and extends from the first cross section 921 to the second cross section 922. The housing 10 further includes a reinforcing rib connected to the power bottom wall 14 and the bottom wall of the hook groove 65, and the bottom wall of the hook groove 65 is disposed opposite to the hook opening 651.

The main structure of the lighting device 100 in the present embodiment is described above, and the method of assembling the lighting device 100 will be briefly described below taking the lighting device 100 in the form of a long strip.

First, the non-light source module 50 is assembled; next, in the housing 10, the light source module 20 is mounted onto the mounting surface 12 from the first cross-sectional end 921 or the second cross-sectional end 922, and the first through hole 23 is disposed in alignment with the second through hole 121; inserting the reflective film 70 into the first light source cavity 61 from the first cross-sectional end 921 or the second cross-sectional end 922, and having a relief hole 711 that avoids the light source module 20 and the non-light source module 50; sequentially passing the non-light source module 50 from the first light source cavity 61 through the first through hole 23 and the second through hole 121 to the power source cavity 63, and positioning and mounting the non-light source module 50 by using a positioning piece; bonding a second optical element 40, wherein the second optical element 40 can cover at least one circle of light emitting units 22 surrounding at least the non-light source module 50, and the second light source cavity 62 is a closed cavity; plugging the first optical element 30 from the first cross-section 921 or the second cross-section 922 so as to cover the light outlet 11; a power module 81, a control module 82 and the like are installed in the power cavity 63, and electrical connection among the power module 81, the control module 82, the light source module 20 and the non-light source module 50 is completed; plugging the power cover 83 from the first cross section 921 or the second cross section 922; plugging the mounting member 84 from the first cross-sectional end 921 or the second cross-sectional end 922 such that the mounting edge 842 plugs into the hook slot 65 from the first cross-sectional end 921 or the second cross-sectional end 922, and the mounting edge 842 connects to the second body 841 through the hook opening 651; two baffles 95 connect the first and second cross-sectional ends 921 and 922, respectively, of the housing 10.

After the light source module 20, the first optical element 30, the power cover 83, and other components are plugged into the housing 10, the components may be further fastened by fasteners such as screws.

Of course, the housing 10 in the lighting device 100 of the embodiment of the present invention is not limited to a rectangular parallelepiped, and may be a circular shape, a triangular shape, a polygonal shape, an irregular specific shape, or the like. Correspondingly, the light source module 20, the first optical element 30, the power cover 83 and other components may be not mounted in a plugging manner, but in a common connection manner such as a threaded connection or a clamping connection.

In the embodiment of the present invention, when not specifically described, the first light source cavity 61 and the second light source cavity 62 may be closed light source cavities, or light source cavities having openings.

While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications may be made within the spirit and principles of the invention.

Claims

1. A lighting device, comprising: the device comprises a shell, a light source module, a first optical element, a second optical element and a non-light source module; the shell and the first optical element enclose a first light source cavity; the light source module is arranged in the first light source cavity and comprises a light source plate and a light-emitting unit arranged on the light source plate; the second optical element is arranged in the first light source cavity, and forms a second light source cavity with the light source module, and the non-light source module and at least part of the light-emitting units on the light source plate are accommodated in the second light source cavity;

The shell comprises a light outlet, a mounting surface arranged opposite to the light outlet and a connecting surface extending from the edge of the mounting surface to the direction of the light outlet; the light source module is arranged on the mounting surface and emits light rays towards the light outlet, and the first optical element is arranged on the light outlet;

The shell also comprises a power supply bottom wall deviating from the mounting surface, a power supply opening arranged opposite to the power supply bottom wall, and a power supply side wall extending from the edge of the power supply bottom wall to the direction of the power supply opening; the power supply bottom wall, the power supply side wall and the power supply opening are surrounded to form a power supply cavity; the light source module is provided with a first through hole, and the mounting surface is provided with a second through hole communicated with the first through hole and the power cavity; the non-light source module extends from the second light source cavity to the first through hole, the second through hole and the power source cavity in sequence;

at least one turn of the light emitting unit surrounds the second optical element within the first light source cavity.

2. A lighting device as recited in claim 1, wherein said light source panel comprises a front face which faces said light exit opening; the lighting device further includes a reflective film including a first reflective surface and a second reflective surface extending from an edge of the first reflective surface; the first reflecting surface is attached to the front surface and provided with an avoidance hole for avoiding the light-emitting unit, and the second reflecting surface is attached to the connecting surface.

3. A lighting device as recited in claim 2, wherein said housing comprises a first slot which encloses said light exit opening, said slot opening toward an axis of said light exit opening, an edge of said first optical element being connected in said first slot; the reflecting film comprises a third reflecting surface, and the third reflecting surface is connected with the second reflecting surface and is arranged in the first clamping groove; the third reflective surface is adjacent to the connection surface with respect to the first optical element.

4. A lighting device as recited in claim 1, wherein said non-light source module comprises a mounting shell and a functional device, wherein a portion of said functional device located in said second light source cavity is nested within said mounting shell, and wherein said mounting shell is formed from a light transmissive material.

5. A lighting device as recited in claim 4, wherein said mounting shell comprises a first body, said first body being nested in said first through hole and said second through hole; the first main body comprises a first end and a second end which are oppositely arranged along the axial direction of the first main body, and the first end and the second end are respectively positioned in the second light source cavity and the power supply cavity; the mounting shell further comprises a bending section, wherein the bending section is connected to the first end and is parallel to the extending direction of the light source plate; the functional device extends into the bending section.

6. A lighting device as recited in claim 5, wherein said mounting shell further comprises a first stop portion and a second stop portion which are disposed on an outer wall of said first body and which are disposed in sequence along an axis of said first body; the first limiting part is positioned in the second light source cavity and is abutted against the light source plate, the second limiting part is close to the second end, and the cross section of the first main body at the second limiting part is deformable, so that the second limiting part is suitable for penetrating through the first through hole and the second through hole, then is positioned in the power source cavity and is abutted against the power source bottom wall.

7. A lighting device as recited in claim 4, wherein said non-light source module further comprises an elastic element, said elastic element being sandwiched between said functional device and an inner wall of said mounting case.

8. A lighting device as recited in claim 1, wherein at least one turn of said light emitting units surrounds said non-light source modules within said second light source cavity.

9. A lighting device as recited in claim 8, wherein said second light source chamber is at a center position of said first light source chamber when said housing is cylindrical.

10. A lighting device as recited in claim 8, wherein a projection of said non-light source module onto said light source board avoids said light emitting unit.

11. A lighting device as recited in claim 1, wherein a minimum distance of said second optical element to said first optical element is greater than or equal to one-half of a distance of said light source plate to said first optical element.

12. A lighting device as recited in claim 11, wherein said second optical element is a second diffusion cover, said second diffusion cover having a light transmittance of greater than 75% and a haze of greater than 90%.

13. A lighting device as recited in claim 1, wherein an edge of said second optical element is connected to said connection surface and/or said light source plate, and said second light source cavity is a closed cavity.

14. A lighting device as recited in claim 3, wherein said second optical element comprises an optical portion and an edge portion which surrounds said optical portion, said optical portion housing said non-light source module and said light emitting unit; the edge part comprises a first edge, a second edge and a third edge and a fourth edge which are oppositely arranged, wherein the first edge and the second edge are connected with the light source plate, and the third edge and the fourth edge are arc-shaped and are attached to the connecting surface.

15. A lighting device as recited in claim 14, wherein said second optical element is arcuate in a direction which extends from said first edge to said second edge.

16. A lighting device as recited in claim 1, wherein said second optical element is a film structure, and wherein a thickness of said second optical element is from 0.1 millimeters to 0.3 millimeters.