CN206145511U - Integration LED blackboard lamp - Google Patents

Abstract

The utility model relates to the technical field of lighting devices, in particular to an integrated LED blackboard lamp, which is characterized in that it includes an integrated profile, an aluminum substrate and an LED array; the integrated profile is a tubular aluminum profile, and the aluminum substrate is bonded It is fixed on the inner surface of the integrated profile, and the LED array is welded on the aluminum substrate through SMD. The integrated profile also includes an arc-shaped reflector extending from the upper front to the lower rear. The LED array emits The light is diffusely reflected to the blackboard through the reflector; the cross section of the reflector is a parabola; the angle between the symmetry axis of the parabola and the vertical central axis of the integrated profile is α, 20°≤α≤30°, and the parabola equation is y= x ² /64, the LED array is mounted at the focus of the parabola. The utility model has good heat dissipation performance, long service life, adjustable angle, can illuminate the area of the blackboard to the greatest extent, and will not cause visual fatigue to the teacher due to direct light emission.

Description

Integrated LED Blackboard Light

technical field

The utility model relates to the technical field of lighting devices, in particular to an integrated LED blackboard lamp.

Background technique

Most of the blackboard lamps currently used in schools are shown in Figure 1. The lamp tube (2') is installed on the lamp housing (1'), and the light is reflected to the blackboard through the reflector (3'). There are problems with this type of blackboard lamp yes:

1. The installation position of the blackboard lamp in the classroom is above the blackboard. Most of the light reflected by this structure reflector shines on the upper part of the blackboard and the wall above the blackboard, but there is not enough light in the blackboard area that really needs to be illuminated. As a result, the illuminance of the lower and upper parts of the blackboard is extremely uneven.

2. Since the blackboard light is installed above the head of the teacher, the direct light of the blackboard light with this structure can enter the teacher's eyes, so it is easy to cause the teacher's visual fatigue.

3. With the popularization of multimedia equipment in classrooms, the installation height of blackboard lights must be higher than that of projection equipment, otherwise, in multimedia applications, blackboard lights will block the projection light of projection equipment and affect teaching. With the increase of the installation height of the blackboard lamp, the blackboard lamp of this structure will irradiate less light on the effective use surface of the blackboard, and the blackboard lamp has almost become a decoration.

4. The light source used by the blackboard lamp with this structure can be fluorescent tubes and LED fluorescent tubes. Fluorescent tubes are inefficient and cause energy waste, while LED fluorescent tubes are often efficient due to limited heat dissipation area and slow heat dissipation. High temperature for a long time will affect the service life.

Utility model content

The utility model aims at the problem that the heat dissipation speed of the lamp tube in the prior art is slow and affects the service life, and researches and designs an integrated LED blackboard lamp that can quickly dissipate heat and has a long service life.

The technical scheme that the utility model adopts is:

An integrated LED blackboard lamp, characterized in that it includes an integrated profile, an aluminum substrate and an LED array; the integrated profile is a tubular aluminum profile, and the aluminum substrate is bonded and fixed on the inner surface of the integrated profile, The LED array is welded on the aluminum substrate through SMD, and the integrated profile also includes an arc-shaped reflector extending from the upper front to the lower rear, and the light emitted by the LED array is diffusely reflected onto the blackboard through the reflector.

Further, the cross section of the reflector is a parabola.

Further, the angle between the axis of symmetry of the parabola and the vertical central axis of the integrated profile is α, 20°≤α≤30°, the equation of the parabola is y=x ² /64, and the LED array is installed on the focus of the parabola .

Further, α=20°.

Further, the upper part of the integrated profile has an aluminum substrate installation groove for installing the aluminum substrate.

Further, the blackboard lamp also includes a light-transmitting cover covering the outside of the LED array, and the integrated profile has a light-transmitting cover installation groove for installing the light-transmitting cover, and the light emitted by the LED array passes through The light-transmitting cover is then projected onto the reflective cover.

Further, the upper part of the integrated profile is fixedly connected with a mounting frame, and the mounting frame is hinged to the hanger above it for hanging the blackboard lamp.

Further, the back of the aluminum substrate is in close contact with the inner wall of the integrated profile, and its front is covered with copper.

Furthermore, the reflector is sandblasted and oxidized to form a diffuse reflective surface.

Compared with the prior art, the utility model obviously has the following beneficial effects:

1. The integrated profile is used as the shell of the blackboard lamp. The integrated profile and the aluminum substrate are both aluminum profiles, which have a better heat dissipation effect compared to the air, and the heat generated by the LED array is dissipated through the outer surface of the entire integrated profile to ensure the LED. The heat dissipation area ensures the service life of the lamp.

2. The cross-section of the reflector is a parabola. Through the diffuse reflection surface of the reflector, the light angle of the lamp can be effectively controlled, so that the light emitted by the blackboard lamp can shine on the correct position of the blackboard, and the illuminance and uniformity of the blackboard can be improved.

3. The utility model emits the light softly through the reflection of the diffuse reflection surface, effectively avoiding the uncomfortable glare caused by the direct light.

4. The utility model realizes the free adjustment of the angle between the integrated LED blackboard lamp and the blackboard through the hinged connection of the mounting frame and the hanger, which greatly enhances the convenience of classroom applications.

5. The integrated profile simplifies the installation process of the blackboard lamp.

Description of drawings

Fig. 1 is the prior art blackboard lamp structural diagram;

Fig. 2 is a structural diagram of the utility model embodiment;

Fig. 3 is a structural diagram of an integrated profile of an embodiment of the utility model.

In the figure, 1' lamp housing, 2' lamp tube, 3/3', reflector, 4, integrated profile, 41, installation groove of aluminum substrate, 42, installation groove of translucent cover, 5, aluminum substrate, 6, LED Array, 7. Translucent cover, 8. Mounting frame, 9. Hanger, 10. Incident light, 11. Reflected light, 12. Symmetry axis, 13. LED drive power supply, 14. Vertical central axis of the integrated profile.

detailed description

In order to make the technical problems, technical solutions and beneficial effects solved by the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

In describing the present invention, it should be understood that the terms "radial", "axial", "upper", "lower", "top", "bottom", "inner", "outer" etc. indicate The orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation or be constructed in a specific orientation. and operation, and therefore cannot be construed as a limitation of the present utility model. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

It needs to be further stated that: when the blackboard lamp is installed in the utility model, the direction close to the blackboard is the front, and the direction away from the blackboard is the rear.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection or an optional connection. Disassembled connection, or integral connection; it can be directly connected or indirectly connected through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

The utility model discloses an integrated blackboard lamp capable of efficiently dissipating heat. The integrated LED blackboard lamp as shown in FIG. (not shown) and LED drive power supply 13. 2 and 3, the integrated profile 4 is a tubular aluminum profile, which is the main housing part of the blackboard lamp, and also realizes the heat dissipation and diffuse reflection functions of the integrated LED blackboard lamp. The aluminum substrate 5 and the light-transmitting cover 7 are Embedded and installed inside the integrated profile 4 , the front upper part of the integrated profile 4 has an aluminum substrate installation groove 41 and a translucent cover installation groove 42 for installing the aluminum substrate 5 and the translucent cover 7 respectively. The back of the aluminum substrate 5 is closely attached to the integrated profile 4, and the front is covered with copper. The LED array 6 is welded on the front of the aluminum substrate 5 through SMD. The cover 7 is a transparent PC material component that seals and protects the light source of the LED array 6 . The aluminum substrate 5 is the carrier of the LED array 6 and provides it with a specific series-parallel circuit. The LED array 6 is regularly arranged light emitting diodes, and is the light source of the integrated LED blackboard lamp.

The integrated profile 4 extends from the upper front to the lower rear with an arc-shaped reflector 3. The reflector 3 is sandblasted and oxidized to form a diffuse reflection surface. In this embodiment, the cross-section of the reflector 3 is a parabola, and the parabola is symmetrical. The angle α between the shaft 12 and the vertical central axis 14 of the integrated profile is 20°≤α≤30°. In this embodiment, α=20°, the parabolic equation is y=x ² /64, and the LED array 6 is installed on the parabolic At the focal point, the incident light 10 emitted by the LED array passes through the light-transmitting cover 7 and then hits the reflector 3 to reflect and form an outgoing light with an included angle of 20° with the vertical central axis 14 of the integrated profile.

The integrated LED blackboard lamp also includes an LED driving power supply 13 fixed inside the integrated profile 4, and the LED driving power supply 13 converts the 220V AC input of the commercial power into a constant voltage that can meet the requirements of the LED array.

Openings at both ends of the integrated profile 4 are sealed by a lamp cap (not shown), and the lamp cap seals the aluminum substrate 5 , light-transmitting cover 7 , LED array 6 and LED driving power 13 inside the integrated profile 4 .

The upper part of the integrated profile 4 is fixedly connected to the mounting frame 8, and the mounting frame 8 is hinged with the hanger 9 used for hoisting the blackboard light. The integrated LED blackboard light can be rotated 180° relative to the hanger 9, which is convenient for adjusting the distance between the blackboard light and the blackboard. The angle between them is so that the light can shine on the blackboard in the largest area.

Specifically, since the LED array 6 is arranged on the focal point of the parabola, the incident light 10 emitted by the LED array 6 passes through the light-transmitting cover 7 and is vertically irradiated on the reflector 3, and the outgoing light reflected by the emitting cover is parallel to the symmetry of the parabola. The axis 12 emits. Since the angle between the axis of symmetry 12 and the vertical central axis 14 of the integrated profile is 20°, the angle between the outgoing light and the vertical central axis 14 of the integrated profile is also 20°. Since the light emitted by the LED array 6 can pass through the light-transmitting cover 7 and then hit the reflector 3, and then be reflected, there is no direct light to irradiate the blackboard lamp, which can avoid the glare hazard caused by the direct light emitted by the blackboard lamp to the teacher.

Since the aluminum profile has good heat dissipation performance relative to the air, the heat generated by the LED is quickly dissipated through the aluminum substrate 5 and the integrated profile 4 in contact with the aluminum substrate 5, and the entire integrated profile 4 is used to dissipate heat, effectively increasing the heat dissipation area and ensuring The service life of the LED is shortened.

In order to adapt to the installation position of the projector in the multimedia classroom, the integrated LED blackboard lamp in this embodiment can be installed higher than the projector, and only need to adjust the angle of the reflector 3 so that the light source can be irradiated to the blackboard to the greatest extent. It can adapt to the needs of various classrooms with space constraints.

The above-mentioned ideal embodiment according to the utility model is an inspiration, and through the above-mentioned description content, relevant workers can make various changes and modifications within the scope of not deviating from the technical idea of the utility model. The technical scope of this utility model is not limited to the content in the description, but must be determined according to the scope of the claims.

Claims (9)

1. An integrated LED blackboard lamp, characterized in that it comprises an integrated profile (4), an aluminum substrate (5) and an LED array (6); the integrated profile (4) is a tubular aluminum profile, and the aluminum The substrate (5) is pasted and fixed on the inner surface of the integrated profile (4), the LED array (6) is welded on the aluminum substrate (5) through SMD, and the integrated profile (4) also includes An arc-shaped reflector (3) extending from the front upper part to the rear lower part, the light emitted by the LED array (6) is diffusely reflected onto the blackboard through the reflector (3). 2. The integrated LED blackboard lamp according to claim 1, characterized in that, the cross section of the reflector (3) is a parabola. 3. The integrated LED blackboard light according to claim 2, characterized in that the angle between the symmetry axis (12) of the parabola and the vertical central axis (14) of the integrated profile is α, 20°≤α≤ 30°, the equation of the parabola is y=x ² /64, and the LED array (6) is installed at the focus of the parabola. 4. The integrated LED blackboard light according to claim 3, characterized in that α=20°. 5. The integrated LED blackboard lamp according to claim 1, characterized in that, the upper part of the integrated profile (4) has an aluminum substrate installation groove (41) for installing the aluminum substrate (5). 6. The integrated LED blackboard light according to claim 1, characterized in that, the blackboard light further comprises a light-transmitting cover (7) covering the outside of the LED array (6), and the integrated profile (4 ) has a light-transmitting cover installation groove (42) for installing the light-transmitting cover (7), and the light emitted by the LED array (6) passes through the light-transmitting cover (7) and then shoots on the reflector (3 )superior. 7. The integrated LED blackboard light according to claim 1, characterized in that, the upper part of the integrated profile (4) is fixedly connected with a mounting frame (8), and the mounting frame (8) and its upper part are used to The hanger (9) of hanging blackboard lamp is hinged. 8. The integrated LED blackboard lamp according to claim 1, characterized in that the back of the aluminum substrate (5) is in close contact with the inner wall of the integrated profile (4), and its front is covered with copper. 9. The integrated LED blackboard lamp according to claim 1, characterized in that, the reflector (3) is sandblasted and oxidized to form a diffuse reflection surface.