CN214064719U - Blackboard lamp and blackboard lamp mounting structure - Google Patents

Abstract

The application discloses blackboard lamp and blackboard lamp mounting structure, blackboard lamp includes: the shell is provided with a mounting surface and comprises a main body and a shielding part positioned on one side of the main body, wherein a mounting groove with an opening opposite to the mounting surface is formed between the side wall of the main body and the shielding part; the light reflecting plate is connected to the bottom of the main body and is arranged opposite to the shielding part, and the light emitting area is defined by the light reflecting plate, the shielding part and the main body; light emitting component, light emitting component sets up in the mounting groove, include the lamp strip and cover the lens of locating on the lamp strip, lens are the strip structure that extends along the equidirectional with the lamp strip, the incident surface that has received light and the emergent surface that sends light, the emergent surface is in the lateral wall of light zone department towards the main part, this scheme is for prior art, the light that the lamp strip sent is adjusted through lens, so that the light that light emitting component sent shines the lateral wall of reflector panel and main part, and shine on the blackboard by light zone through diffuse reflection, can reduce the light intensity that light emitting component shines on the blackboard.

Description

Blackboard lamp and blackboard lamp mounting structure

Technical Field

The application relates to the field of blackboard lamps, in particular to a blackboard lamp and a blackboard lamp mounting structure.

Background

The blackboard is used as a carrier for knowledge transmission between teachers and students, and the quality of the lighting environment directly influences the efficiency and effect of classroom teaching, and also influences the eyesight and eye fatigue of teachers and students. In order to ensure the teaching quality, a blackboard lamp is often adopted for illumination and is generally arranged above the side of the blackboard so as to ensure that a student can see the blackboard clearly and light rays do not directly enter the eyes of the student.

Currently, a blackboard lamp includes a housing, a light emitting assembly, and an end cap, both of which are assembled to the housing. The shell is provided with a cavity which is used for installing a driving power supply and has two open ends, the light-emitting component is installed on one side of the shell, and the end covers are installed at the two ends of the shell and are used for covering the cavity.

However, when the light emitting module is mounted on one side of the housing, the light emitting module directly illuminates the blackboard, and there is a possibility that light rays illuminated on the blackboard are too intense, which easily causes glare, and thus, the health of eyes is easily affected when people learn and work in this environment for a long time.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the blackboard lamp and the blackboard lamp mounting structure can avoid the blackboard lamp from directly irradiating the blackboard.

The application provides a blackboard lamp includes:

the shell is provided with a mounting surface for connecting a hanger and comprises a main body and a shielding part positioned on one side of the main body, wherein the main body is provided with a cavity which is used for mounting a driving power supply and has two open ends, and a mounting groove with an opening facing away from the mounting surface is formed between the side wall of the main body and the shielding part;

the light reflecting plate is connected to the bottom of the main body and is arranged opposite to the shielding part, and the light emitting area is defined by the light reflecting plate, the shielding part and the main body;

the light-emitting assembly is arranged in the mounting groove and comprises a light bar and a lens covered on the light bar, the lens is of a strip-shaped structure extending along the same direction as the light bar and is provided with an incident surface for receiving light and an emergent surface for emitting light, and the emergent surface faces to the side wall of the main body at the light emergent area;

and the end covers are arranged at two ends of the shell and are used for covering the cavity and the light emergent area.

Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.

Optionally, when the blackboard lamp is in an installation state, one side of the emergent surface, which is back to the main body, is lower than one side of the emergent surface, which is back to the main body, and an included angle between the emergent surface and the horizontal plane is 1-5 degrees.

Optionally, an included angle between the exit surface and the horizontal plane is 3 °.

Optionally, the light bar has a light emitting surface for emitting light, the light emitting surface is arranged opposite to the incident surface of the lens, and the light emitting surface faces the side wall of the main body at the light emitting area.

Optionally, when the blackboard lamp is in an installation state, one side of the light emergent surface, which is back to the main body, is lower than one side of the light emergent surface, which is back to the main body, and an included angle between the light emergent surface and a horizontal plane is 1-5 degrees.

Optionally, an included angle between the light emitting surface and the horizontal plane is 3 °.

Optionally, the housing has a length direction, and the light bar and the lens both extend along the length direction of the housing;

the main part is first terminal surface respectively along casing length direction's both ends, the both ends of occlusion part along casing length direction are the second terminal surface respectively, the main part is isometric setting with the occlusion part, two first terminal surfaces respectively with the second terminal surface one-to-one that corresponds, and keep flushing.

Optionally, the end cover includes a first cover body and a second cover body that are fastened to each other, the first cover body is mounted to the housing through a fastener, and the second cover body is used to cover the first cover body and the fastener.

The application also provides the following technical scheme:

the blackboard lamp mounting structure comprises a hanging piece and the blackboard lamp as above, wherein the blackboard lamp is mounted on a supporting surface through the hanging piece.

Optionally, the hanger includes a suspension rod, a first mounting bracket and a second mounting bracket, the first mounting bracket is connected to the suspension rod, the second mounting bracket is connected to the housing, and the first mounting bracket and the second mounting bracket are both rotatably connected around an axis;

in the first mounting bracket and the second mounting bracket, one of them is seted up a plurality of regulation holes of arranging around axis circumference, and the locking hole has been seted up to the other, when first mounting bracket and second mounting bracket rotated to predetermined position relatively, the locking hole is just right with the regulation hole that corresponds to pass the mounting in proper order the locking hole with the regulation hole, with first mounting bracket is fixed with the second mounting bracket.

This application blackboard lamp and blackboard lamp mounting structure, the light that the lamp strip sent is adjusted through lens to the lateral wall of light struck reflector panel and main part that makes light-emitting component send, and through diffuse reflection by go out the light zone shine the blackboard on, can reduce light intensity that light-emitting component shines on the blackboard.

Drawings

FIG. 1 is a schematic structural diagram of a blackboard lamp according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a blackboard lamp according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of a blackboard lamp according to an embodiment of the present disclosure;

FIG. 4 is a schematic cross-sectional view of the blackboard lamp of FIG. 1;

FIG. 5 is a partial schematic structural view of the housing of FIG. 1;

FIG. 6 is a schematic structural diagram of the first cover in FIG. 2;

FIG. 7 is an enlarged view of the portion A of FIG. 6;

FIG. 8 is a schematic structural diagram of the second cover in FIG. 2;

FIG. 9 is an enlarged view of the portion B of FIG. 8;

FIG. 10 is a schematic structural diagram of a blackboard lamp mounting structure according to an embodiment of the present application;

FIG. 11 is a partial structural view of the blackboard lamp in FIG. 10;

FIG. 12 is a schematic view of the first and second mounting brackets of FIG. 11 connected together;

fig. 13 is a schematic structural view illustrating the connection between the first and second mounting brackets in fig. 11.

The reference numerals in the figures are illustrated as follows:

100. a blackboard lamp;

10. a housing; 11. a mounting surface; 12. a main body; 121. a cavity; 13. a shielding portion; 14. mounting grooves; 15. a reflector; 16. a light emitting area; 17. a screw slot; 18. a chute;

20. a drive power supply; 21. a power line; 22. wire buckling;

30. a light emitting assembly; 31. a light bar; 32. a lens;

40. an end cap; 41. a first cover body; 411. an end plate; 412. an extension portion; 413. a via hole; 414. a guide groove; 42. a second cover body; 43. edge covering; 44. buckling a position block; 441. a guide slope; 45. a buckling groove;

50. hanging; 51. a boom; 52. a first mounting bracket; 521. a first connecting plate; 522. a second connecting plate; 523. a fixing hole; 53. a second mounting bracket; 531. a third connecting plate; 532. a fourth connecting plate; 533. a slider; 54. an adjustment hole; 55. a locking hole; 56. a fixing member; 57. a housing; 58. and (5) sucking the top support.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 5, the present application provides a blackboard lamp 100, which includes a housing 10, a light emitting assembly 30 and an end cap 40, wherein both the light emitting assembly 30 and the end cap 40 are assembled to the housing 10. The top of the housing 10 has a mounting surface 11 (e.g., a ceiling) for attaching the hanger 50 so that the blackboard lamp 100 can be mounted. In the present embodiment, when the blackboard lamp 100 is in the mounted state, the top of the housing 10 is disposed upward (for example, toward the ceiling), and the bottom is disposed downward (for example, away from the ceiling).

When the light emitting assembly 30 is installed at one side of the housing 10, the light emitting assembly 30 directly illuminates the blackboard, and there is a possibility that light rays illuminated on the blackboard are too strong, which is likely to cause glare, and thus, the eye health is easily affected by long-time learning and working in this environment.

In order to solve the above technical problem, in the present embodiment, as shown in fig. 1 to 5, the blackboard lamp 100 further includes a reflector 15;

the housing 10 comprises a main body 12 and a shielding part 13 positioned on one side of the main body 12, wherein the main body 12 is provided with a cavity 121 which is used for installing the driving power supply 20 and has two open ends, and a mounting groove 14 with an opening facing away from the mounting surface 11 is formed between the side wall of the main body 12 and the shielding part 13;

the reflector 15 is connected to the bottom of the main body 12 and is arranged opposite to the shielding part 13, and the reflector 15, the shielding part 13 and the main body 12 enclose a light emergent area 16;

the light emitting assembly 30 is disposed in the mounting groove 14, and includes a light bar 31 and a lens 32 covering the light bar 31, the lens 32 is a strip structure extending along the same direction as the light bar 31, and has an incident surface for receiving light and an emergent surface for emitting light, and the emergent surface faces the side wall of the main body 12 in the light emergent area 16;

the end caps 40 are installed at both ends of the housing 10 and are used to cover the cavity 121 and the light exiting area 16.

The light emitted from the light bar 31 is adjusted by the lens 32 so that the light emitted from the light emitting assembly 20 irradiates the side walls of the reflector 15 and the main body 12, and then irradiates the blackboard through the light emergent area after diffuse reflection, thereby reducing the intensity of the light irradiated from the light emitting assembly 20 to the blackboard. Meanwhile, the reflector 15 can shield the light of the blackboard lamp 100 from the eyes of the teacher, and can also enable the light of the blackboard lamp 100 to be uniformly irradiated on the blackboard.

In this embodiment, when the blackboard lamp 100 is installed, the side of the emitting surface facing away from the main body 12 is lower than the side facing the main body 12, and the included angle between the emitting surface and the horizontal plane is 1 to 5 °, so that the light emitted from the blackboard lamp 100 is more uniform. Preferably, the angle between the exit face and the horizontal is 3 °.

Similarly, the light emitting angle may not be adjustable by adjusting only the emitting surface of the lens 32, and referring to one embodiment, the light bar 31 has a light emitting surface for emitting light, the light emitting surface is disposed opposite to the incident surface of the lens 32, and the light emitting surface faces the sidewall of the main body 12 at the light emitting area 16.

Specifically, when the blackboard lamp 100 is installed, the side of the light-emitting surface facing away from the main body 12 is lower than the side facing the main body 12, and the included angle between the light-emitting surface and the horizontal plane is 1-5 °. Preferably, the included angle between the light-emitting surface and the horizontal plane is 3 degrees.

In this embodiment, the light bar 31 is electrically connected to the driving power supply 30, the driving power supply 20 is connected to an external power supply through the power line 21, the housing 10 is provided with a wire passing hole (not shown) for the power line 21 to pass through, a wire buckle 22 is arranged between the wire passing hole and the power line 21, and the wire buckle 22 is fastened to the outer side of the power line 21 and fastened to the wire passing hole, so as to achieve an effect of preventing the power line 21 from being pulled.

In this embodiment, when the blackboard lamp 100 is installed, the end of the reflector 15 opposite to the main body 12 is lower than the end of the reflector 15 facing the main body 12, and the included angle between the reflector 15 and the horizontal plane is 20-40 °. Preferably, the reflector 15 is at an angle of 33 ° to the horizontal.

Further, when the blackboard lamp 100 is in the mounted state, the orthographic projection of the reflector 15 is overlapped with the orthographic projection part of the lens 32; wherein, the width of the part of the lens 32 shielded by the reflector 15 is L1, the part not shielded is L2, and satisfies L1: l2-0.2-0.4.

In order to enhance the connection strength between the reflector 15 and the main body 12 and reduce the process difficulty of the reflector 15, referring to one embodiment, the reflector 15 is integrally disposed with the main body 12.

In a specific configuration of the housing 10, referring to one embodiment, the housing 10 is a metal profile (e.g., aluminum alloy), the housing 10 has a length direction, and the light bar 31 and the lens 32 both extend along the length direction of the housing;

the two ends of the main body 12 along the length direction of the shell are respectively first end faces, the two ends of the shielding part 13 along the length direction of the shell are respectively second end faces, the main body 12 and the shielding part 13 are arranged in equal length, and the two first end faces are respectively in one-to-one correspondence with the corresponding second end faces and are kept flush.

The top surface of the shielding portion 13 is flush with the top surface of the main body 12, and when the blackboard lamp 100 is installed, the height of the shielding portion 13 is smaller than the height of the main body 12 (i.e., there is a certain height difference between the bottom of the shielding portion 13 and the bottom of the main body 12). In order to enhance the structural strength of the shielding portion 13, referring to one embodiment, the shielding portion 13 is provided in a double-layer structure, an outer layer structure of the shielding portion 13 and the top surface of the main body 12 are in the same plane, and an installation groove 14 is formed between the inner layer structure and the main body 12. In some embodiments, the shielding portion 13 is integrally disposed with the main body 12 to enhance the connection strength between the shielding portion 13 and the main body 12.

When the end cap 40 is fixed to the end of the housing 10 by means of screws, the heads of the screws may be exposed to the outside of the housing 10 to form protrusions on the outer surface of the blackboard lamp 100, which is easy to prick the hand and affects the appearance of the blackboard lamp 100.

In order to solve the above technical problem, in some embodiments, as shown in fig. 1 to 3, the end cap 40 includes a first cover 41 and a second cover 42 that are fastened to each other, the first cover 41 is mounted to the housing 10 by a fastener, and the second cover 42 is used for covering the first cover 41 and the fastener, so that the outer surface of the blackboard lamp 100 is flat and smooth without protruding points (e.g., screw heads) and without hurting the hands of an operator.

In this embodiment, the fastener is a screw. A screw groove 17 is formed on the inner side (the side facing the cavity 121) of the housing 10, a through hole 413 is formed in the first cover 41, and a screw passes through the through hole 413 and is screwed into the screw groove 17. The number of the fastening members is plural, and the fastening members are sequentially arranged along the side wall of the housing 10 at intervals, so that the connection strength between the first cover 41 and the housing 10 can be enhanced.

Referring to one embodiment of the connection method of the first cover 41 and the second cover 42, as shown in fig. 6 to 9, one of the first cover 41 and the second cover 42 is provided with a fastening block 44, and the other is provided with a fastening groove 45 engaged with the fastening block 44. When the first cover 41 and the second cover 42 are assembled, the fastening block 44 is only required to be fastened to the fastening groove 45, so that the first cover 41 and the second cover 42 can be assembled quickly.

In order to enhance the connection strength between the first cover 41 and the second cover 42, in one embodiment, the number of the fastening blocks 44 is multiple, and each fastening block 44 is disposed at intervals in the circumferential direction of the first cover 41 or the circumferential direction of the second cover 42; the number of the catching grooves 45 is equal to the number of the catching blocks 44, and the catching blocks 44 are correspondingly clamped in the corresponding catching grooves 45 one by one.

In the present embodiment, the number of the catching blocks 44 is 4, and accordingly, the number of the catching grooves 45 is 4. Of course, in other embodiments, the number of the catching blocks 44 may be 2, 3, or 4 or more.

In this embodiment, the second cover 42 is provided with a covering edge 43, and the covering edge 43 is located at the periphery of the second cover 42 and wraps the periphery of the first cover 41. The covering edge 43 is continuously provided along the periphery of the second cover 42, and is integrally provided with the second cover 42.

In a specific configuration of the first cover 41, referring to one embodiment, the first cover 41 includes an end plate 411 and an extension portion 412, the end plate 411 is respectively attached to the end portion of the housing 10 and the end portion of the light reflection plate 15, and is mounted to the housing 10 by a fastener, the extension portion 412 is disposed on one side of the end plate 411 along a circumferential direction of the end plate 411, and the extension portion 412 has a certain distance from an outer edge of the end plate 411 (the distance is substantially equal to a thickness of the edge 43); the edge 43 is wrapped outside the extending portion 412, and one end of the edge 43 facing away from the second cover 42 abuts against the end plate 411, so that the outer side of the edge 43 is flush with the outer edge of the end plate 411.

In the present embodiment, the catching groove 45 is opened on the outer peripheral edge of the extension part 412, and the catching block 44 is provided on the rim 43. The fastening block 44 protrudes from the inner side of the covered edge 43, and in the process of mutually clamping the second cover body 42 and the first cover body 41, the fastening block 44 abuts against the extension part 412, so that the extension part 412 and/or the covered edge 43 deform until the fastening block 44 is clamped into the fastening groove 45, and the extension part 412 and/or the covered edge 43 reset.

In order to guide the catching block 44 to enter the catching groove 45, the catching block 44 is disposed to be inclined toward one side of the first cover 41 to form a guide inclined surface 441, the extending portion 412 is disposed with a guide groove 414 engaged with the guide inclined surface 441, and the guide groove 414 is aligned with the catching groove 45 to guide the catching block 44 to enter the catching groove 45.

In order to adjust the light emitting angle of the blackboard lamp 100, as shown in fig. 10 to 13, the present application further provides a blackboard lamp mounting structure, which includes a hanger 50 and a blackboard lamp 100, the blackboard lamp 100 is located on a supporting surface (for example, a ceiling) through the hanger 50, and the blackboard lamp 100 may adopt the blackboard lamp 100 in the above embodiments.

Specifically, the hanger 50 includes a suspension rod 51, a first mounting bracket 52 and a second mounting bracket 53, the first mounting bracket 52 is connected with the suspension rod 51, and the second mounting bracket 53 is connected with the housing 10;

the first and second mounting frames 52 and 53 are rotatably connected around an axis (the axis is the same as the length direction of the housing 10), one of the first and second mounting frames 52 and 53 is provided with a plurality of adjusting holes 54 circumferentially arranged around the axis, the other one of the first and second mounting frames 52 and 53 is provided with a locking hole 55, when the first and second mounting frames 52 and 53 are relatively rotated to a predetermined position (the position is adjusted according to the light emitting angle of the blackboard lamp 100), the locking hole 55 is aligned with the corresponding adjusting hole 54, and the fixing member 56 sequentially passes through the locking hole 55 and the adjusting hole 54, so as to fix the first and second mounting frames 52 and 53.

The centers of the plurality of adjusting holes 54 are distributed on the same arc line, and the center of the arc line coincides with the center of the locking hole 55.

In this embodiment, the number of the hangers 50 is at least two, and the two hangers 50 are sequentially arranged along the length direction of the housing. As shown in fig. 5, the mounting surface 11 of the housing 10 is provided with a sliding groove 18 extending along the longitudinal direction of the housing, the second mounting bracket 53 is provided with a slider 533 capable of sliding along the sliding groove 18, and the distance between the hangers 50 can be adjusted by adjusting the position of the slider 533 on the sliding groove 18.

Specifically, the cross section of the sliding groove 18 in the width direction of the housing is T-shaped, the sliding block is a square nut, a stud portion of the square nut is screwed on the second mounting frame 53, and a screw head portion can slide along the sliding groove 18.

In a specific arrangement form of the first mounting bracket 52, referring to one embodiment of the present invention, as shown in fig. 12, the first mounting bracket 52 is disposed in an L shape and is formed by bending a plate with a thickness of 1mm to 2mm, the first mounting bracket 52 includes a first connecting plate 521 and a second connecting plate 522 connected to the first connecting plate 521, a fixing hole 523 is formed in the first connecting plate 521, and a locking hole 55 is formed in the second connecting plate 522. One end of the hanger rod 51 facing the first mounting bracket 52 passes through the fixing hole 523, and the hanger rod 51 is screwed with two nuts between which the first connecting plate 521 is clamped.

In a specific arrangement form of the second mounting bracket 53, referring to one embodiment, as shown in fig. 13, the second mounting bracket 53 is L-shaped and is formed by bending a plate with a thickness of 1mm to 2mm, the second mounting bracket 53 includes a third connecting plate 531 and a fourth connecting plate 532 connected to the third connecting plate 531, the third connecting plate 531 is provided with an adjusting hole 54, and the fourth connecting plate 532 is connected to the housing 10.

The second connecting plate 522 is attached to the third connecting plate 531. The second connecting plate 522 and the third connecting plate 531 are both provided with rotating holes, a rotating pin penetrates through the rotating holes, and the second connecting plate 522 and the third connecting plate 531 rotate through the rotating pin.

In order to fix the blackboard lamp 100 to the ceiling, referring to one embodiment, as shown in fig. 9, the hanger 50 further includes a housing 57 and a ceiling bracket 58, the ceiling bracket 58 is connected to the suspension rod 51 and can fix the suspension rod 51 to the ceiling, and the housing 57 is disposed outside the ceiling bracket 58 to prevent the ceiling bracket 58 from leaking.

Specifically, the ceiling-mounted support 58 is in a zigzag structure, a through hole through which the hanger rod 51 passes is formed in the middle of the ceiling-mounted support 58, a center hole is formed in the middle of the housing 57, and an opening of the zigzag structure faces the ceiling. In the process of installing the blackboard lamp 100 to the ceiling, the hanger rod 51 sequentially passes through the center hole and the through hole, and the pin shaft is inserted into the pin hole of the hanger rod 51 to limit the hanger rod 51 from being separated from the ceiling bracket 58, and finally, the two ends of the ceiling bracket 58 are fixed to the ceiling through bolts or expansion bolts.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features. When technical features in different embodiments are represented in the same drawing, it can be seen that the drawing also discloses a combination of the embodiments concerned.

The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.

Claims (10)

1. Blackboard lamp, its characterized in that includes:

the shell is provided with a mounting surface for connecting a hanger and comprises a main body and a shielding part positioned on one side of the main body, wherein the main body is provided with a cavity which is used for mounting a driving power supply and has two open ends, and a mounting groove with an opening facing away from the mounting surface is formed between the side wall of the main body and the shielding part;

the light reflecting plate is connected to the bottom of the main body and is arranged opposite to the shielding part, and the light emitting area is defined by the light reflecting plate, the shielding part and the main body;

the light-emitting assembly is arranged in the mounting groove and comprises a light bar and a lens covered on the light bar, the lens is of a strip-shaped structure extending along the same direction as the light bar and is provided with an incident surface for receiving light and an emergent surface for emitting light, and the emergent surface faces to the side wall of the main body at the light emergent area;

and the end covers are arranged at two ends of the shell and are used for covering the cavity and the light emergent area.

2. The blackboard lamp according to claim 1, characterized in that when the blackboard lamp is in the installation state, the side of the exit surface facing away from the main body is lower than the side facing the main body, and the included angle between the exit surface and the horizontal plane is 1-5 °.

3. A blackboard lamp as claimed in claim 2, characterised in that the angle between the exit face and the horizontal is 3 °.

4. The blackboard lamp of claim 1, wherein the light bar has a light emitting surface for emitting light, the light emitting surface is disposed opposite to the incident surface of the lens, and the light emitting surface faces the side wall of the main body at the light emitting area.

5. The blackboard lamp of claim 4, wherein when the blackboard lamp is in the installed state, the side of the light-emitting surface facing away from the main body is lower than the side facing the main body, and the included angle between the light-emitting surface and the horizontal plane is 1-5 °.

6. The blackboard lamp of claim 5, wherein the angle between the light exit surface and the horizontal plane is 3 °.

7. The blackboard light of claim 1, wherein the housing has a length direction, and the light bar and the lens both extend along the length direction of the housing;

the main part is first terminal surface respectively along casing length direction's both ends, the both ends of occlusion part along casing length direction are the second terminal surface respectively, the main part is isometric setting with the occlusion part, two first terminal surfaces respectively with the second terminal surface one-to-one that corresponds, and keep flushing.

8. The blackboard lamp according to claim 1, wherein the end cap includes a first cap and a second cap that are fastened to each other, the first cap is mounted to the housing through a fastener, and the second cap is used to cover the first cap and the fastener.

9. A blackboard lamp mounting structure, characterized by comprising a hanger and a blackboard lamp according to any one of claims 1 to 8, wherein the blackboard lamp is mounted on a support surface through the hanger.

10. The blackboard light mounting structure of claim 9, wherein the hanger includes a hanger bar, a first mounting bracket and a second mounting bracket, the first mounting bracket is connected with the hanger bar, the second mounting bracket is connected with the housing, and the first mounting bracket and the second mounting bracket are both rotatably connected around an axis;

in the first mounting bracket and the second mounting bracket, one of them is seted up a plurality of regulation holes of arranging around axis circumference, and the locking hole has been seted up to the other, when first mounting bracket and second mounting bracket rotated to predetermined position relatively, the locking hole is just right with the regulation hole that corresponds to pass the mounting in proper order the locking hole with the regulation hole, with first mounting bracket is fixed with the second mounting bracket.

Images