CN209991261U - Blackboard lamp - Google Patents

Abstract

The utility model is suitable for a lighting technology field provides a blackboard lamp, include: the heat dissipation part is in a long strip shape; the light source assembly is inserted into the heat dissipation member and is arranged along the length direction of the heat dissipation member; the lens is inserted into the heat dissipation piece and arranged along the length direction of the heat dissipation piece, the lens is positioned on the light emitting side of the light source assembly, the lens is provided with a light inlet surface and a light outlet surface, and the light inlet surface is close to the light source assembly; the heat radiation piece is located one side of the lens far away from the light source component is provided with an anti-dazzle tongue, and the anti-dazzle tongue is arranged along the length direction of the heat radiation piece and is located below the light emitting surface. The utility model discloses in, when light was gone out the plain noodles by lens and is emergent, this anti-dazzle tongue can shelter from the light that the people stood when preceding at the blackboard and lie in this blackboard lamp below, can prevent effectively that light from directly reaching people's eyes, and then play anti-dazzle's effect.

Description

Blackboard lamp

Technical Field

The utility model relates to the technical field of lighting technology, in particular to blackboard lamp.

Background

The blackboard is very common in teaching activities, and can be used by teachers to write teaching contents. The blackboard has various application environments, and under the environment that some light is not good, the blackboard lamp can be used for increasing the brightness of the blackboard. At present, more and more schools adopt LED light sources and LED lamps as teaching illumination. However, the current blackboard lamp is installed at a position obliquely above the blackboard, and the emitted light partially irradiates the eyes of a person, so that glare is generated to influence the vision of the person.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a blackboard lamp aims at solving present blackboard lamp and has the technical problem of glare.

The utility model discloses a realize like this, a blackboard lamp, include:

the heat dissipation part is in a long strip shape;

the light source assembly is inserted into the heat dissipation member and is arranged along the length direction of the heat dissipation member; and

the lens is inserted into the heat dissipation piece and arranged along the length direction of the heat dissipation piece, the lens is positioned on the light emitting side of the light source assembly, the lens is provided with a light inlet surface and a light outlet surface, and the light inlet surface is close to the light source assembly;

the heat radiation piece is located one side of the lens far away from the light source component is provided with an anti-dazzle tongue, and the anti-dazzle tongue is arranged along the length direction of the heat radiation piece and is located below the light emitting surface.

In one embodiment, the anti-glare tongue is obliquely arranged, the head end of the anti-glare tongue is opposite to the edge of the light-emitting surface, and the tail end of the anti-glare tongue extends in the direction away from the light-emitting surface.

In one embodiment, in the longitudinal cross-sectional direction of the heat dissipation element, a projection length L2 of the anti-glare tongue on a horizontal plane is 2/5 to 2/3 of a projection length L1 of the light-emitting surface on the horizontal plane, and a vertical distance H between one end of the anti-glare tongue close to the light-emitting surface and the light-emitting surface is 2/5L1 to 2/3L 1.

In one embodiment, the L2-1/2L 1 and the H-1/2L 1.

In one embodiment, the L1 is 20mm, the L2 is 10mm, and the H is 10 mm.

In one embodiment, the longitudinal cross-sectional shape of the anti-glare tongue includes at least one of a straight shape, an arc shape that curves in a direction toward the light exit surface, and an arc shape that curves away from the light exit surface.

In one embodiment, the light emitting surface is provided with a groove along the length direction thereof.

In one embodiment, the anti-glare tongue is integrally formed with the heat sink.

In one embodiment, a first accommodating space, a second accommodating space and a light outlet hole are formed in the heat dissipation member and sequentially communicated with each other, the light source assembly is accommodated in the first accommodating space, the lens is accommodated in the second accommodating space, the light outlet surface is opposite to the light outlet hole, and the light outlet hole is a vertical through hole.

In one embodiment, the blackboard lamp further includes:

the driving assembly is arranged on the heat dissipation member and is electrically connected with the light source assembly;

side covers which cover both ends of the heat sink; and

one end of the hanging piece is connected with the heat radiating piece, and the other end of the hanging piece is used for being connected with a mounting surface;

the end face of one end, far away from the anti-dazzle tongue, of the heat dissipation piece is provided with an installation groove arranged along the length direction of the heat dissipation piece, and the driving assembly is installed in the installation groove.

Implement the utility model discloses a blackboard lamp has following beneficial effect: it sets up the anti-dazzle tongue through the one side that the light source subassembly was kept away from to lens that is located the radiating piece, and this anti-dazzle tongue arranges and is located the below on play plain noodles along the length direction of radiating piece, and wherein, when light was emergent by the play plain noodles of lens, this anti-dazzle tongue can shelter from the light that the people was located this blackboard lamp below when standing before the blackboard, can prevent effectively that light from directly reaching people's eyes, and then plays the effect of anti-dazzle.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is an exploded schematic view of a blackboard lamp provided by an embodiment of the present invention;

fig. 2 is a partial longitudinal sectional view of a blackboard lamp provided by an embodiment of the present invention;

fig. 3 is a schematic light ray diagram of a blackboard lamp provided by an embodiment of the present invention;

fig. 4 is a longitudinal sectional view of a heat dissipating member of a blackboard lamp provided by an embodiment of the present invention;

fig. 5 is a longitudinal sectional view of a lens of a blackboard lamp provided by an embodiment of the present invention.

Reference numerals referred to in the above figures are detailed below:

10-a heat sink; 11-anti-glare tongue; 101-a first accommodating space; 102-a second accommodating space; 103-light outlet; 104-a mounting groove; 105-a bump; 106-screw; 20-a light source assembly; 21-a substrate; 22-LED light source; 30-a lens; 31-a light incident surface; 311-a recess; 32-a light-emitting surface; 321-a groove; 33-a first side; 34-a second side; 35-incident light side; 40-a drive assembly; 50-side cover; 60-hanging piece; 70-a stop block; 80-silica gel pad; 90-a decorative piece; 100-blackboard lamp.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly secured to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and not to be construed as limiting the technical solution. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.

In order to explain the technical solution of the present invention, the following detailed description is made with reference to the specific drawings and examples.

Referring to fig. 1, 2 and 5, an embodiment of the present invention provides a blackboard lamp 100, where the blackboard lamp 100 includes a heat sink 10, a light source assembly 20 and a lens 30. The heat sink 10 is long, the light source assembly 20 is inserted into the heat sink 10 and arranged along the length direction of the heat sink 10, the lens 30 is also inserted into the heat sink 10 and arranged along the length direction of the heat sink 10, the lens 30 is located on the light emitting side of the light source assembly 20, the lens 30 has a light incident surface 31 and a light emitting surface 32, the light incident surface 31 is close to the light source assembly 20, and the light emitting surface 32 deviates from the light source assembly 20. In a specific application, the heat sink 10 is a profile structure, such as an aluminum profile extruded to facilitate heat dissipation; the light source assembly 20 includes a substrate 21 and a plurality of LED light sources 22 disposed on the substrate 21 at intervals, the substrate 21 is in a long shape, and the plurality of LED light sources 22 are uniformly disposed on one side of the substrate 21 close to the lens 30 along a length direction of the substrate 21. Referring to fig. 3, the lens 30 can refract and reflect the light emitted by the LED light source 22 to form a polarization effect, and specifically, the light emitted by the LED light source 22 enters the lens 30 through the light incident surface 31 of the lens 30, and is refracted and reflected inside the lens 30 and then exits through the light exiting surface 32 of the lens 30, so that the light is uniform.

At present, most of the blackboard lamps 100 are arranged at the position obliquely above the blackboard, and the emitted light partially directly irradiates eyes of people to generate glare to influence the vision of the people. In the present embodiment, an anti-glare tongue 11 is disposed on a side of the heat sink 10, which is located on the lens 30 and away from the light source assembly 20, the anti-glare tongue 11 is disposed along the length direction of the heat sink 10 and located below the light exit surface 32 of the lens 30, and the anti-glare tongue 11 has an anti-glare effect. Specifically, referring to fig. 3, after the light is emitted from the light emitting surface 32 of the lens 30, the anti-glare tongue 11 can shield the light from the blackboard lamp 100 when a person stands in front of the blackboard, so as to effectively prevent the light from directly reaching the eyes of the person, thereby playing a role of anti-glare. It is understood that the blackboard lamp 100 can also be used to illuminate a wall or a wall-hung wall painting, an art work, etc. according to actual needs.

In one embodiment, the anti-glare tongue 11 is integrally formed with the heat sink 10, for example, the anti-glare tongue 11 and the heat sink 10 are formed by aluminum extrusion, so as to simplify the structure and save the cost. In the present embodiment, the anti-glare tongue 11 is formed by extending a portion of the heat sink 10 on a side of the lens 30 away from the light source assembly 20. It is understood that in other embodiments, the anti-glare tongue 11 may be a separate piece, which is attached to the heat dissipation member 10 by bonding, clamping, welding, or the like, and the material of the anti-glare tongue 11 may be different from that of the heat dissipation member 10.

In one embodiment, the anti-glare tongue 11 is disposed obliquely with an inclination angle of 0 to 80 °, a head end of the anti-glare tongue 11 is opposite to an edge of the light-emitting surface 32, and a tail end of the anti-glare tongue 11 extends away from the light-emitting surface 32. The head end of the anti-glare tongue 11 refers to the end connected with the heat sink 10, and the tail end of the anti-glare tongue 11 refers to the end far away from the head end, i.e., the free end. In this embodiment, the purpose that anti-dazzle tongue 11 set up like this is in order to reflect light to carry out the light filling to the blackboard, be favorable to promoting the holistic illuminance uniformity of blackboard, guaranteed that the illuminance of blackboard is even.

In an embodiment, referring to fig. 2, along the longitudinal cross-sectional direction of the heat dissipation element 10, a projection length of the anti-glare tongue 11 on the horizontal plane is set to be L2, a projection of the light-emitting surface 32 of the lens 30 on the horizontal plane is set to be L1, and a vertical distance between one end of the anti-glare tongue 11 close to the light-emitting surface 32 and the light-emitting surface 32 is set to be H, that is, the vertical distance between the head end of the anti-glare tongue 11 and the light-emitting surface 32 is H, so that L2 is 2/5L1 to 2/3L1, and H is 2/5L1 to 2/3L 1. Here, the horizontal plane of the present embodiment refers to a plane perpendicular to the vertical direction in fig. 2. Preferably, L2-1/2L 1 and H-1/2L 1.

In an embodiment, referring to fig. 2, along the longitudinal cross-sectional direction of the heat dissipation element 10, a projection of the light-emitting surface 32 of the lens 30 on the horizontal plane is L1 being 20mm, a projection length of the anti-glare tongue 11 on the horizontal plane is L2 being 10mm, and a vertical distance between the head end of the anti-glare tongue 11 and the light-emitting surface 32 is H being 10 mm. It is understood that in other embodiments, the values of L1, L2, and H may be selected from other values, and are not limited thereto.

In one embodiment, the longitudinal cross-sectional shape of the anti-glare tongue 11 includes at least one of a straight line shape, an arc shape that curves in a direction toward the light-emitting surface 32, and an arc shape that curves away from the light-emitting surface 32. In a specific application, the longitudinal cross-sectional shape of the anti-glare tongue 11 is linear, arc-shaped, or a combination of linear and arc shapes (i.e., partially linear and partially arc-shaped), wherein the arc shape may be an arc shape curving toward the light-emitting surface 32 or an arc shape curving away from the light-emitting surface 32. In the embodiment, the linear and arc-shaped anti-glare tongues 11 have a simple structure and a good shading effect, and play a better anti-glare role; to provide better anti-glare properties, the anti-glare tongue 11 may be anodized.

In one embodiment, referring to fig. 5, the light incident surface 31 of the lens 30 is disposed obliquely to the substrate 21 of the light source assembly 20, and the light incident surface 31 and the light emitting surface 32 cooperate with each other to refract light toward the blackboard. The light incident surface 31 is a cambered surface structure protruding toward the substrate 21, and a concave portion 311 is disposed in the middle of the light incident surface 31 to deflect light toward the light emitting surface 32. The lens 30 further comprises a first side surface 33 and a second side surface 34 which are positioned on two sides of the light emitting surface 32, the inclination of the first side surface 33 is greater than that of the second side surface 34, so that light is deflected, the first side surface 33 and the second side surface 34 are matched with each other to reflect the light emitted by the LED light source 22 towards the blackboard, the illumination of the blackboard is more uniform, and the requirement that the uniformity of the illumination of the blackboard is more than or equal to 0.8 is met. The light incident surface 31 has two sides respectively connected with a light incident side surface 35, the light incident side surface 35 is perpendicular to the substrate 21, the light incident side surface 35 and the light incident surface 31 form a cavity for accommodating the LED light source 22, and the light incident side surface 35 is used for refracting light toward the first side surface 33 or the second side surface 34 of the lens 30.

Preferably, a groove 321 is formed in the light emitting surface 32 along the length direction thereof, and the groove 321 mainly plays a role of polarization. Wherein the longitudinal cross-sectional shape of the groove 321 is substantially arc-shaped.

In a specific application, when the length of the lens 30 is long, the lens 30 can be divided into multiple segments, and the stopper 70 is disposed between two adjacent segments of the lens 30.

In an embodiment, referring to fig. 4, in order to facilitate the installation of the light source assembly 20 and the lens 30, a first accommodating space 101, a second accommodating space 102 and a light emitting hole 103 are formed in the heat sink 10, wherein the first accommodating space 101, the second accommodating space 102 and the light emitting hole 103 are sequentially communicated, the substrate 21 of the light source assembly 20 is accommodated in the first accommodating space 101, the lens 30 is accommodated in the second accommodating space 102, the shape of the first accommodating space 101 is adapted to the shape of the substrate 21, and the shape of the second accommodating space 102 is adapted to the shape of the lens 30. The light-emitting surface 32 of the lens 30 faces the light-emitting hole 103, and the anti-glare tongue 11 is located below the light-emitting hole 103. In this embodiment, the light emitting hole 103 is a vertical through hole.

In one embodiment, referring to fig. 1 and 4, the blackboard lamp 100 further includes a driving assembly 40, a side cover 50, and a hanger 60. The driving assembly 40 is mounted on the heat sink 10, electrically connected to the light source assembly 20, and configured to drive the light source assembly 20 to emit light; the side covers 50 are covered on both ends of the heat sink 10, that is, the side covers 50 are covered on both ends of the heat sink 10; one end of the hanger 60 is connected to the heat sink 10, and the other end of the hanger 60 is used for connection to a mounting surface, which may be a blackboard or a wall, etc. In a specific application, the driving assembly 40 mainly includes a box body, a circuit board disposed in the box body, and the like; the number of the hanging members 60 may be one, two, or more, wherein the two hanging members 60 can ensure smooth connection of the lamp body and save cost, and therefore, the two hanging members 60 are preferred.

In one embodiment, a mounting groove 104 is formed on an end surface of the heat dissipating member 10 away from the end of the anti-glare tongue 11, the mounting groove 104 is disposed along a length direction of the heat dissipating member 10, the driving unit 40 is mounted in the mounting groove 104, and one end of the hanger 60 is connected to the mounting groove 104.

In one embodiment, the side cover 50 is fastened to the heat sink 10 by a screw 106, and specifically, two protrusions 105 are disposed on the heat sink 10, an opening having an opening is disposed in the protrusion 105, and one end of the screw 106 is fixed in the opening of the protrusion 105 after passing through the side cover 50. In order to maintain the integrity of the appearance of the blackboard lamp 100, a decoration 90 is provided on a side of the side cover 50 remote from the heat sink 10. In addition, a silicone gasket 80 is further provided between the side cover 50 and the heat sink 10.

The above description is only an alternative embodiment of the present invention, and should not be construed as limiting the present invention, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A blackboard lamp, comprising:

the heat dissipation part is in a long strip shape;

the light source assembly is inserted into the heat dissipation member and is arranged along the length direction of the heat dissipation member; and

the lens is inserted into the heat dissipation piece and arranged along the length direction of the heat dissipation piece, the lens is positioned on the light emitting side of the light source assembly, the lens is provided with a light inlet surface and a light outlet surface, and the light inlet surface is close to the light source assembly;

the heat radiation piece is located one side of the lens far away from the light source component is provided with an anti-dazzle tongue, and the anti-dazzle tongue is arranged along the length direction of the heat radiation piece and is located below the light emitting surface.

2. The blackboard lamp of claim 1, wherein the anti-glare tongue is disposed in an inclined manner, the head end of the anti-glare tongue is opposite to the edge of the light-emitting surface, and the tail end of the anti-glare tongue extends in a direction away from the light-emitting surface.

3. The blackboard lamp as claimed in claim 1, wherein, along the longitudinal section direction of the heat dissipating member, the projection length L2 of the anti-glare tongue on the horizontal plane is 2/5 to 2/3 of the projection length L1 of the light-emitting surface on the horizontal plane, and the vertical distance H between the end of the anti-glare tongue close to the light-emitting surface and the light-emitting surface is 2/5L1 to 2/3L 1.

4. The blackboard lamp according to claim 3, wherein the L2-1/2L 1 and the H-1/2L 1.

5. The blackboard lamp according to claim 4, wherein the L1 is 20mm, the L2 is 10mm, and the H is 10 mm.

6. The blackboard lamp of claim 1, wherein the longitudinal sectional shape of the anti-glare tongue includes at least one of a straight line shape, an arc shape curved toward the light exit surface, and an arc shape curved away from the light exit surface.

7. The blackboard lamp of claim 1, wherein the light exit surface is grooved along its length.

8. The blackboard light of claim 1, wherein the anti-glare tongue is integrally formed with the heat sink.

9. A blackboard lamp as claimed in any one of claims 1 to 7, characterised in that the heat sink has a first receiving space, a second receiving space and a light exit hole formed therein, which are sequentially connected, the light source assembly is received in the first receiving space, the lens is received in the second receiving space, the light exit surface faces the light exit hole, and the light exit hole is a vertical through hole.

10. The blackboard lamp according to any of claims 1 to 7, characterized in that it further comprises:

the driving assembly is arranged on the heat dissipation member and is electrically connected with the light source assembly;

side covers which cover both ends of the heat sink; and

one end of the hanging piece is connected with the heat radiating piece, and the other end of the hanging piece is used for being connected with a mounting surface;

the end face of one end, far away from the anti-dazzle tongue, of the heat dissipation piece is provided with an installation groove arranged along the length direction of the heat dissipation piece, and the driving assembly is installed in the installation groove.

Images