CN215335960U

CN215335960U - LED blackboard lamp

Info

Publication number: CN215335960U
Application number: CN202121557231.4U
Authority: CN
Inventors: 潘长旺; 陈世雄; 陈翔; 邵祥松; 陈冬冬; 朱康杰
Original assignee: NANJING CHINA ELECTRONICS PANDA LIGHTING CO Ltd
Current assignee: NANJING CHINA ELECTRONICS PANDA LIGHTING CO Ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2021-12-28
Anticipated expiration: 2031-07-09

Abstract

The utility model discloses an LED blackboard lamp, which comprises: the device comprises a shell assembly, a light source assembly, a lens assembly, a power supply assembly and a mounting bracket assembly; the body assembly comprises a stretching shell provided with a cavity, and a first clamping groove, a second clamping groove and a third clamping groove are formed in the stretching shell; the light source assembly is arranged in the first clamping groove and comprises a PCB and a plurality of LED lamp beads fixed on the PCB; the lens component is arranged in the second clamping groove and comprises a sectional lens; the driving power supply assembly is arranged in the cavity and comprises a driving power supply, an input line and an internal line, wherein one end of the input line is connected with the driving power supply, the other end of the input line is connected with an external power supply, and the other end of the internal line is connected with the light source assembly; the mounting bracket component is arranged in the third clamping groove and used for fixedly mounting the lamp. The utility model has the advantages of simple structure, convenient assembly, excellent photoelectric performance and high heat dissipation.

Description

LED blackboard lamp

Technical Field

The utility model relates to lighting equipment, in particular to an LED blackboard lamp.

Background

The blackboard lamp is usually installed at the oblique upper position of the blackboard, and light emitted by the blackboard lamp irradiates on the blackboard so as to facilitate students to watch contents on the blackboard. The traditional blackboard lamp based on a double-end fluorescent lamp is an illuminating lamp widely used in the current classrooms, and the problems of low average illumination, poor illumination uniformity, serious optical frequency flash, easy glare generation and the like generally exist in the traditional blackboard lamp.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an LED blackboard lamp.

The technical scheme adopted by the utility model is as follows:

an LED blackboard lamp comprising: the shell assembly comprises a stretching shell provided with a cavity, a left end cover and a right end cover, wherein the left end cover and the right end cover are used for sealing the cavity; a third clamping groove is formed in the horizontal top surface of the stretching shell, a first clamping groove and a second clamping groove which are communicated with each other are formed in the front side surface of the stretching shell, which inclines downwards, the first clamping groove, the second clamping groove and the third clamping groove are all through grooves with the same length as the shell, and the second clamping groove is located on the outer side of the first clamping groove; the light source assembly is arranged in the first clamping groove and comprises a PCB and a plurality of LED lamp beads fixed on the PCB; a lens assembly mounted within the second card slot, the lens assembly including a segmented lens; the driving power supply assembly is arranged in the cavity and comprises an input line, a driving power supply and an internal line, a thread head is arranged at one end of the input line, one ends of the input line and the internal line are respectively connected with an input interface and an output interface of the driving power supply, the other end of the input line penetrates through the stretching shell and is used for being connected with an external power supply, and the other end of the internal line is connected with the light source assembly; and the mounting bracket component is used for fixedly mounting the lamp and is arranged in the third clamping groove.

Further, the installing support component comprises a fixing support and a rotating support, the third clamping groove is clamped into one end of the fixing support, the third clamping groove is fastened through a first screw, the other end of the fixing support is rotatably connected with the rotating support through a second screw, and the rotating support is used for fixedly installing the assembled lamp.

Furthermore, the mounting bracket subassembly is equipped with two sets ofly, and the symmetry is located the left and right sides of tensile casing.

Furthermore, the shell assembly is made of aluminum alloy, and the stretching shell is integrally formed through a stretching process.

Further, the segmented lens is composed of a plurality of lenses having the same structure.

Further, the lens is a polarizing lens.

Furthermore, the driving power supply comprises a control circuit board, the control circuit board comprises a rectifying circuit, a driving circuit and a non-stroboscopic circuit, the input end of the rectifying circuit is connected with the alternating current power supply, and the output end of the rectifying circuit is connected with the input end of the driving circuit; the input end of the non-stroboscopic circuit is connected with the output end of the driving circuit, and the output end of the non-stroboscopic circuit is connected with the light source component.

The utility model has the beneficial effects that: by adopting the structural design of matching the LED light source component and the lens component, the illumination of the lamp meets the national standard requirements, the lighting effect is uniform, the color temperature is stable, the color rendering index is high, the lighting effect of the lamp is high, the glare value is small, and the requirements of blue light harming RG0 are met. Due to the structural design of the shell assembly, the lamp is simple in structure, convenient to assemble and good in heat dissipation performance.

Drawings

Fig. 1 is a front view of an LED blackboard lamp of the present invention.

Fig. 2 is a transverse sectional view of the LED blackboard lamp of the present invention.

Fig. 3 is an exploded view of the LED blackboard lamp of the present invention.

Fig. 4 is a schematic structural diagram of the stretching shell of the present invention.

In the figure, 1, a lens; 2. a light source assembly; 3. a left end cap; 4. fixing a bracket; 5. a first screw; 6. rotating the bracket; 7. a nut; 8. an input line; 9. stretching the shell; 10. a drive power supply; 11. a right end cap; 12. a second screw; 13. an internal wire; 91. a first card slot; 92. a second card slot; 93. a third card slot; 94. a rectangular cavity.

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 described in detail and fully with reference to the accompanying drawings and a preferred embodiment.

Referring to fig. 1 to 3, the present embodiment provides an LED blackboard lamp, which includes a housing assembly, a light source assembly 2, a lens assembly, a mounting bracket assembly, and a driving power supply assembly.

The housing assembly includes a tension housing 9, a left end cap 3 and a right end cap 11. As shown in fig. 4, the stretching housing 9 is composed of an upper side wall, a lower side wall, a left side wall and a right side wall, the rear end of the upper side wall and the lower side wall, the left side wall and the right side wall enclose a rectangular cavity 94 equal to the length of the housing, a third clamping groove 93 is arranged on the top surface of the rectangular cavity 94, the front end of the upper side wall extends forwards and is bent downwards and inwards to be connected with the lower side wall, the rear end of the upper side wall and the lower side wall and the right side wall enclose a triangular cavity equal to the length of the housing, a second clamping groove 92 and a first clamping groove 91 which are communicated are arranged on the oblique side of the triangular cavity, and the second clamping groove 92 is located outside the first clamping groove 91. The first slot 91, the second slot 92 and the third slot 93 are all through slots with the same length as the housing. A first wire passing hole is formed in the upper side wall of the stretching shell 9 and communicated with the rectangular cavity; the front side wall of the stretching shell 9 is provided with a second wire passing hole, and the second wire passing hole is communicated with the rectangular cavity 93 and the first clamping groove 91.

The left end cover 3 and the right end cover 11 are mounted at the left and right ends of the stretching housing 9 through first screws 12, and the rectangular cavity 94 is closed. The material of the stretching shell 9, the left end cover 3 and the right end cover 11 is all 6063 aluminum. The stretching housing 9 is integrally formed by a stretching process.

Light source subassembly 2 is including having the PCB board of via hole and fixing 180 2835 type LED lamp pearls on the PCB board, and light source subassembly 2 inlays the dress and is stretching in the first draw-in groove 91 of casing 9, and LED lamp pearl dispels the heat through tensile casing 9, does not need additionally to set up the radiator alone.

The lens assembly comprises a segmented lens 1, for example, in the present embodiment, the segmented lens 1 is composed of 4 segments of lenses with the same structure. And 4 lenses with the length of 300mm can be selected and used for a lamp with the length of 1200mm and are sequentially embedded in the second clamping groove 92 of the stretching shell 9. Every lens length is 300mm, the mould design of being convenient for, and when the product assembly, can avoid interfering with the draw-in groove on the tensile casing 9 because of lens overlength. The lens 1 adopts a polarizing lens, and visible light emitted by the LED lamp beads can effectively solve the glare problem of the blackboard lamp after being refracted by the polarizing lens 1. The lens 1 is fixed by the clamping groove without adopting an additional fixing mode.

The drive power supply assembly includes an input line 8, a drive power supply 10, and an internal line 13, and one end of the input line 8 is provided with a screw head. During installation, one end of the input line 8 without threads and one end of the internal line 13 are respectively installed at an input interface and an output interface of the driving power supply 10, 3M glue is pasted on the back of the driving power supply 10, one end of the input line 8 with a thread head penetrates through the first wire passing hole, the other end of the internal line 13 penetrates through the second wire passing hole, the driving power supply 10 is inserted into the rectangular cavity 94 of the stretching shell 9 and is pasted on the side wall of the shell through the 3M glue, the nut 7 is screwed into the thread head on the input line 8 from the outside of the stretching shell 9, and the other end of the internal line 13 is welded on the light source assembly 2; the threaded head of the input line 8 is used for connection to an external power source. The driving power supply 10 comprises a control circuit board, the control circuit board comprises a rectifying circuit, a driving circuit and a non-stroboscopic circuit, the input end of the rectifying circuit is connected with an alternating current power supply, and the output end of the rectifying circuit is connected with the input end of the driving circuit; the input end of the non-stroboscopic circuit is connected with the output end of the driving circuit, and the output end of the non-stroboscopic circuit is connected with the light source component. The structural design of the driving power supply has good stability, can effectively control the ripple depth and has no stroboflash.

The installing support component comprises a fixed support 4 and a rotating support 6, the fixed support 4 is connected with the rotating support 6 through a second screw 5, the fixed support 4 is placed in a third clamping groove 93, the fixed support 4 is temporarily fixed on a stretching shell 9 through a third screw, when the lamp is installed, the third screw is locked after the relative distance between the two fixed supports 4 is adjusted according to actual conditions, and then the rotating support 6 is rotated to adjust the lamp to a proper angle and then the second screw 5 is locked.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and the improvements and modifications are also within the protection scope of the present invention.

Claims

1. An LED blackboard lamp, characterized by comprising:

the shell assembly comprises a stretching shell provided with a cavity, a left end cover and a right end cover, wherein the left end cover and the right end cover are used for sealing the cavity; a third clamping groove is formed in the horizontal top surface of the stretching shell, a first clamping groove and a second clamping groove which are communicated with each other are formed in the front side surface of the stretching shell, which inclines downwards, the first clamping groove, the second clamping groove and the third clamping groove are all through grooves with the same length as the shell, and the second clamping groove is located on the outer side of the first clamping groove;

the light source assembly is arranged in the first clamping groove and comprises a PCB and a plurality of LED lamp beads fixed on the PCB;

a lens assembly mounted within the second card slot, the lens assembly including a segmented lens;

the driving power supply assembly is arranged in the cavity and comprises an input line, a driving power supply and an internal line, a thread head is arranged at one end of the input line, one ends of the input line and the internal line are respectively connected with an input interface and an output interface of the driving power supply, the other end of the input line penetrates through the stretching shell and is used for being connected with an external power supply, and the other end of the internal line is connected with the light source assembly; and

and the mounting bracket component is used for fixedly mounting the lamp and is arranged in the third clamping groove.

2. The LED blackboard lamp according to claim 1, wherein the mounting bracket assembly includes a fixing bracket and a rotating bracket, one end of the fixing bracket is clamped into the third clamping groove and fastened through a first screw, the other end of the fixing bracket is rotatably connected with the rotating bracket through a second screw, and the rotating bracket is used for fixedly mounting the assembled lamp.

3. The LED blackboard lamp of claim 2, wherein the mounting bracket assemblies are arranged in two groups, symmetrically arranged on the left and right sides of the stretching shell.

4. The LED blackboard lamp of claim 1, wherein the housing assembly is made of aluminum alloy, and the stretching housing is integrally formed by a stretching process.

5. The LED blackboard lamp of claim 1, wherein the segmented lens is composed of a plurality of lenses with the same structure.

6. The LED blackboard lamp as claimed in claim 5, wherein the lens is a polarizing lens.

7. The LED blackboard lamp according to claim 1, wherein the driving power supply includes a control circuit board, the control circuit board includes a rectifying circuit, a driving circuit and a non-stroboscopic circuit, the input end of the rectifying circuit is connected to the AC power supply and the output end is connected to the input end of the driving circuit; the input end of the non-stroboscopic circuit is connected with the output end of the driving circuit, and the output end of the non-stroboscopic circuit is connected with the light source component.