A line scanning light source

Abstract

The application belongs to the technical field of optics, and particularly relates to a line scanning light source which comprises an LED lamp and an opaque shell, one end of the shell is open, the LED lamp is arranged in the shell and faces away from the open end of the shell, a cylindrical and transparent rod shell is arranged between the LED lamp and the open end of the shell in the shell through a mounting device, the axis of the rod shell is perpendicular to the direction of the open end of the shell, and the rod shell is filled with transparent liquid; the line scanning light source is designed in the mode that the cylindrical rod shell is filled with the transparent liquid to focus light, and the problem of high manufacturing cost caused by the use of a lens group in the traditional technology is solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of optics, and particularly relates to a linear scanning light source. BACKGROUND

[0002] Generally, a light source is formed by a high-density uniform array of high-power LED lamp beads, and some lens groups are needed to make the light emitted by the light source project onto a plane to form a straight line. However, the manufacturing cost of the lens groups is high, and therefore, a low-cost linear scanning light source needs to be designed. SUMMARY

[0003] The application aims at the defects of the prior art, adopts a mode of filling a transparent liquid in a cylindrical rod shell to focus light, and designs a linear scanning light source, so as to solve the problem of high manufacturing cost caused by the use of lens groups in the prior art.

[0004] To achieve the above object, the application provides the following technical scheme.

[0005] The linear scanning light source comprises an LED lamp and an opaque shell, one end of the shell is open, the LED lamp is arranged in the shell on the side away from the open end of the shell, a cylindrical and transparent rod shell is arranged between the LED lamp and the open end of the shell in the shell through a mounting device, the axis of the rod shell is perpendicular to the direction of the open end of the shell, and the rod shell is filled with a transparent liquid.

[0006] Preferably, one end of the rod shell is open, and a plug body is arranged in the open end of the rod shell.

[0007] Preferably, the rod shell is made of acrylic material or quartz.

[0008] Preferably, the transparent liquid is water.

[0009] Preferably, a planar transparent plate is arranged at the open end of the shell, the planar transparent plate is parallel to the axis of the rod shell, and the planar transparent plate is perpendicular to the axis of the open end of the shell.

[0010] Preferably, the shell is rectangular, and the shell further comprises a light guide, the light guide comprises a clamping plate, a support plate, and a first spring, the support plate is parallel to the flat transparent plate, the support plate is fixed on the side of the rod shell away from the opening of the shell, the LED lamp is arranged on the support plate and faces the rod shell, two clamping plates are arranged in the shell, one end of each clamping plate faces the flat transparent plate, the other end of each clamping plate is away from the flat transparent plate, the two clamping plates are separately arranged on the two sides of the rod shell, the two ends of the two clamping plates are respectively rotationally connected to the two ends of the support plate, the rotation axes of the rotationally connected parts of the support plate and the clamping plates are parallel to the axis of the rod shell, the two clamping plates are connected by the first spring on the side of the support plate away from the flat transparent plate, and the two surfaces of the clamping plates perpendicular to the axis of the rod shell are in contact with the two inner side walls of the shell perpendicular to the axis of the rod shell.

[0011] Preferably, the soft black substance is arranged on the surface of each clamping plate facing the rod shell, and the soft black substance is also arranged on the inner side walls of the shell perpendicular to the axis of the rod shell.

[0012] Preferably, a plurality of through holes are arranged on the side wall of the shell away from the flat transparent plate, an air extractor is arranged on the outer side wall of the shell at the through holes, and the air inlet of the air extractor is connected to the through holes.

[0013] Preferably, the mounter comprises a pressing plate, the pressing plate is arranged in the shell and located at the end of the rod shell, one end of the pressing plate away from the rod shell is rotationally connected to a bearing, the other end of the bearing penetrates out of the shell, a threaded hole matched with the bearing is arranged on the shell, one end of the pressing plate facing the flat transparent plate is located between the clamping plate and the flat transparent plate, and a gap is arranged between the other end of the pressing plate away from the flat transparent plate and the support plate, and the gap is smaller than the diameter of the rod shell.

[0014] Preferably, the width of the pressing plate is smaller than the distance between the two ends of the support plate connected to the two clamping plates.

[0015] Preferably, the side wall of the shell located on the side of the clamping plate away from the rod shell is a movable wall, a stand is arranged on each side wall of the shell perpendicular to the axis of the rod shell, the axis of the stand is parallel to the axis of the rod shell, the movable wall is fixedly connected to the side of the stand away from the clamping plate by a second spring, and the side of the movable wall facing the clamping plate abuts against the clamping plate.

[0016] Compared with the prior art, the application has the beneficial effects that:

[0017] 1、The application adopts the mode of filling transparent liquid in the cylindrical rod shell to focus light, and designs a linear scanning light source, thereby solving the problem of high manufacturing cost caused by using a lens group in the traditional technology.

[0018] 2、The transparent liquid in the application can be selected in many ways, and common ones are water, which is very cheap and saves manufacturing cost; in addition, the rod shell can also be a cylindrical glass bottle, which saves cost; and in the application, the color of the transparent liquid can be changed as needed, so that the light after passing through the rod shell presents different colors.

[0019] 3、The application sets the extrusion plate, which can fix the rod shell in the shell after changing the position of the rod shell without changing the position of the bolt on the rod shell, as shown in Figure 5 When the original A position of the rod shell is changed to the B position, the extrusion plate and the bottom wall of the shell can still hold the rod shell, thereby fixing the rod shell in the shell. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic view of the application;

[0021] Figure 2 is Figure 1 a structural schematic view of the application after the top wall of the shell is opened;

[0022] Figure 3 is a relationship diagram between the top wall of the shell and the extrusion plate;

[0023] Figure 4 is a structural schematic view of the first spring and the second spring in the application;

[0024] Figure 5 is a schematic view of the action of the extrusion plate.

[0025] 1, LED lamp; 2, shell; 3, rod shell; 4, plug body; 5, flat lens plate; 6, extrusion plate; 7, bolt; 8, clamping plate; 9, support plate; 10, first spring; 11, second spring; 12, through hole; 13, air extractor; 14, movable wall; 15, stand. DETAILED DESCRIPTION

[0026] Referring to Figures 1-5A linear light source, comprising a LED lamp 1, an opaque shell 2, the shell 2 being open at one end, the LED lamp 1 being arranged in the shell 2 at a side away from the opening of the shell 2, a cylindrical and transparent rod shell 3 being arranged in the shell 2 between the LED lamp 1 and the opening of the shell 2 by a mount, the axis of the rod shell 3 being perpendicular to the direction of the opening of the shell 2, the rod shell 3 being filled with transparent liquid.

[0027] In the embodiment, the rod shell 3 forms a convex lens by injecting transparent liquid into the rod shell 3, so that the light emitted by the LED lamp is emitted from the axis of the rod shell 3 after passing through the rod shell 3 filled with transparent liquid, thus forming a line parallel to the axis of the rod shell 3 when projected onto a plane. The transparent liquid can be many, such as water, which is very cheap and saves manufacturing cost. In addition, the rod shell 3 can also be a cylindrical glass bottle, which saves cost. In the application, the color of the transparent liquid can also be changed according to needs, so that the light after passing through the rod shell 3 presents different colors.

[0028] As a preferred mode, the rod shell 3 is open at one end, and a plug 4 is arranged at the opening of the rod shell 3. Such arrangement is mainly to facilitate the replacement of different transparent liquids according to actual needs.

[0029] As a preferred mode, the rod shell 3 is made of acrylic material or quartz.

[0030] As a preferred mode, the transparent liquid is water. Such mode makes the manufacturing cost low.

[0031] As a preferred mode, a planar transparent plate 5 is tightly arranged at the opening of the shell 2, the planar transparent plate 5 being parallel to the axis of the rod shell 3, and the planar transparent plate 5 being perpendicular to the axis of the opening of the shell 2. Such arrangement of the planar transparent plate 5 can make the LED lamp 1 located in a closed space, preventing dust from entering and polluting the LED lamp 1.

[0032] As a preferred mode, the shell 2 is rectangular, and the shell 2 is further provided with a light guide, which comprises a clamping plate 8, a support plate 9 and a first spring 10. The support plate 9 is parallel to the flat transparent plate 5 and is fixed to the side of the rod shell 3 away from the opening of the shell 2. The LED lamp 1 is arranged on the support plate 9 and faces the rod shell 3. Two clamping plates 8 are arranged in the shell 2, and one end of each clamping plate 8 faces the flat transparent plate 5, and the other end of each clamping plate 8 is away from the flat transparent plate 5. The two clamping plates 8 are located on the two sides of the rod shell 3, and the two ends of the two clamping plates 8 are rotatably connected to the two ends of the support plate 9, respectively. The rotation axis of the rotatable connection between the support plate 9 and the clamping plate 8 is parallel to the axis of the rod shell 3. The two clamping plates 8 are connected by the first spring 10 on the side of the support plate 9 away from the flat transparent plate 5. After using the first spring 10, the two clamping plates 8 are separated on the side of the support plate 9 away from the flat transparent plate 5. That is, when the rod shell 3 is installed between the two clamping plates 8 and away from the support plate 9, the two clamping plates 8 will press the rod shell 3, thereby clamping the rod shell 3. In combination with the installer, the rod shell 3 is fixed more stably. The two surfaces of the clamping plate 8 perpendicular to the axis of the rod shell 3 are in contact with the two inner side walls of the shell 2 perpendicular to the axis of the rod shell 3. The two surfaces of the support plate 9 perpendicular to the axis of the rod shell 3 are in contact with the two inner side walls of the shell 2 perpendicular to the axis of the rod shell 3. By arranging the clamping plate 8, the clamping plate 8 can prevent external light from entering the space between the support plate 9, the clamping plate 8 and the rod shell 3 and affecting the light emitted by the LED lamp 1, such as white light emitted by the LED lamp 1. If yellow light enters the space between the support plate 9, the clamping plate 8 and the rod shell 3 and comes out from the side of the rod shell 3 away from the LED lamp 1, it will affect the previous requirements.

[0033] As a preferred mode, the surface of each clamping plate 8 facing the rod shell 3 is provided with a soft black substance, and the inner side wall of the shell 2 perpendicular to the axis of the rod shell 3 is also covered with the soft black substance. The soft black substance can be rubber or rubber. The soft black substance on the clamping plate 8 is mainly to protect the surface of the rod shell 3, so that the clamping plate 8 does not leave marks on the surface of the rod shell 3 after clamping the rod shell 3, thereby affecting the light output after the rod shell 3 is rotated after maintenance. The main function of the soft black substance on the shell 2 is to achieve sealing to prevent the gap between the inner wall of the shell 2 and the clamping plate 8 from causing the space where the LED lamp 1 is located to be not airtight.

[0034] As a preferred embodiment, the housing 2 has several through holes 12 on its side wall facing away from the planar transparent plate 5, and an exhaust fan 13 is provided on the outer side wall of the housing 2 at each of the through holes 12, with the air inlet of the exhaust fan 13 connected to the through hole 12. This arrangement is for heat dissipation of the LED light 1.

[0035] In a preferred embodiment, the installer includes a pressing plate 6 located at the end of the rod shell 3 within the housing 2. One end of a bolt 7 is rotatably connected to the side of the pressing plate 6 facing away from the rod shell 3 via a bearing. The other end of the bolt 7 extends through the housing 2. The housing 2 has a threaded hole that mates with the bolt 7. The end of the pressing plate 6 facing the planar transparent plate 5 is located between the clamping plate 8 and the planar transparent plate 5. A predetermined gap exists between the end of the pressing plate 6 facing away from the planar transparent plate 5 and the support plate 9, the gap being smaller than the diameter of the rod shell 3. This installation of the pressing plate 6 allows the rod shell 3 to be fixed within the housing 2 without changing the position of the bolt 7 on the rod shell 3. Figure 5 As shown, the distance from position A to the planar transparent plate 5 is greater than the distance from position B to the planar transparent plate 5. When the original position A of the rod shell 3 is changed to position B (the rod shell 3 is represented as rod shell 3' at position B), because the extrusion plate 6 is long enough, the extrusion plate 6 can still clamp the rod shell 3 between itself and the bottom wall of the housing 2, thus fixing the rod shell 3 inside the housing 2. However, if the extrusion plate 6 is not provided and only the bolt 7 is used, this effect cannot be achieved. The width of the extrusion plate 6 is smaller than the distance between the two ends of the clamping plates 8 connected on the support plate 9. This arrangement can prevent the clamping plates 8 from supporting the extrusion plate 6 and causing the extrusion plate 6 not to press against the rod shell 3, or the support plate 9 from pressing against the extrusion plate 6 and causing the extrusion plate 6 not to press against the rod shell 3, thus causing the rod shell 3 to slide inside the housing 2.

[0036] As a preferred method, such as Figure 4As shown, the side wall of the shell 2 on the side away from the clamping plate 8 of the rod shell 3 is a movable wall 14, two side walls of the shell 2 perpendicular to the axis of the rod shell 3 are provided with a stand 15, the axis of the stand 15 is parallel to the axis of the rod shell 3, the stand 5 is fixedly connected to the side of the movable wall 14 away from the clamping plate 8 through the second spring 11, and the side of the movable wall 14 towards the clamping plate 8 abuts against the clamping plate 8. After such arrangement, even if the through hole 12 is arranged on the shell 2, the space between the rod shell 3 and the plane lens plate 5 in the shell 2 can also be sealed, so that dust cannot enter the space between the rod shell 3 and the plane lens plate 5 in the shell 2 through the through hole 12. And due to the existence of the second spring 11, even if the included angle between the two clamping plates 8 is changed, the movable wall 14 will close the space between the rod shell 3 and the plane lens plate 5 in the shell 2 under the action of the second spring 11; and then after such arrangement, rod shells 3 with different diameters can be replaced according to actual needs.

[0037] In assembly, the rod shell 3 filled with transparent liquid is first installed and fixed in the shell 2 through the opening of the shell 2, and then the plane transparent plate 5 is installed at the opening of the shell 2.

Claims

1. A line scan light source, comprising an LED lamp (1) and an opaque housing (2), characterized in that, One end of the housing (2) is open, and the LED lamp (1) is located inside the housing (2) on the side opposite to the opening of the housing (2). A cylindrical and transparent rod shell (3) is provided inside the housing (2) between the LED lamp (1) and the opening of the housing (2) by means of an installer. The axis of the rod shell (3) is perpendicular to the opening direction of the housing (2), and the rod shell (3) is filled with transparent liquid. The shell (2) has a planar transparent plate (5) at its opening. The planar transparent plate (5) is parallel to the axis of the rod shell (3) and perpendicular to the axis of the opening of the shell (2). The housing (2) is rectangular. A light guide is also provided inside the housing (2). The light guide includes a clamping plate (8), a support plate (9), and a first spring (10). The support plate (9) is parallel to the planar transparent plate (5). The support plate (9) is fixedly installed on the side of the rod shell (3) facing away from the opening of the housing (2). The LED light (1) is installed on the side of the support plate (9) facing the rod shell (3). Two clamping plates (8) are provided inside the housing (2). One end of each clamping plate (8) faces the planar transparent plate (5), and the other end of each clamping plate (8) faces away from the planar transparent plate (5). The two clamping plates (8) are located on the rod shell (3). On both sides, the two ends of the two clamping plates (8) are rotatably connected to the two ends of the support plate (9). The rotation axis of the support plate (9) and the clamping plate (8) is parallel to the axis of the rod shell (3). The two clamping plates (8) are connected by the first spring (10) on the side of the support plate (9) facing away from the planar transparent plate (5). The two surfaces of the clamping plate (8) perpendicular to the axis of the rod shell (3) are in contact with the two inner side walls of the shell (2) perpendicular to the axis of the rod shell (3). The two surfaces of the support plate (9) perpendicular to the axis of the rod shell (3) are in contact with the two inner side walls of the shell (2) perpendicular to the axis of the rod shell (3). Each of the clamping plates (8) has a soft black substance on the surface facing the rod shell (3), and the inner wall of the shell (2) perpendicular to the axis of the rod shell (3) is also covered with the soft black substance.

2. The line scan light source according to claim 1, characterized in that, One end of the rod shell (3) is open, and a plug (4) is provided at the open end of the rod shell (3).

3. A line scan light source according to claim 1, characterized in that, The rod shell (3) is made of acrylic material or quartz.

4. A line scan light source according to claim 1, characterized in that, The transparent liquid is water.

5. A line scan light source according to claim 1, characterized in that, The housing (2) has several through holes (12) on the side wall facing away from the planar transparent plate (5). An exhaust fan (13) is provided on the outer side wall of the housing (2) at the through hole (12), and the air inlet of the exhaust fan (13) is connected to the through hole (12).

6. A line scan light source according to claim 1, characterized in that, The installer includes an extrusion plate (6), which is located at the end of the rod shell (3) inside the housing (2). The side of the extrusion plate (6) facing away from the rod shell (3) is rotatably connected to one end of a bolt (7) via a bearing. The other end of the bolt (7) extends through the outside of the housing (2). The housing (2) is provided with a threaded hole that mates with the bolt (7). The end of the extrusion plate (6) facing the planar transparent plate (5) is between the clamping plate (8) and the planar transparent plate (5). There is a preset gap between the end of the extrusion plate (6) facing away from the planar transparent plate (5) and the support plate (9). The gap is smaller than the diameter of the rod shell (3).

7. A line scan light source according to claim 6, characterized in that, The width of the extrusion plate (6) is less than the distance between the two ends of the two clamping plates (8) connected on the support plate (9).

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