CN111265006A - Backlit table for design hand-painted and figurative production - Google Patents

Abstract

The backlight table is used for designing hand-drawing and hand-handling production, the light-homogenizing plate is adopted to realize light redistribution by utilizing the principle of light diffraction, the light dispersion is further strengthened through the light diffusion layer, softer light is realized, and the problems that eyes are easy to fatigue and easily dizzy when the table is laid down under a direct light source for a long time for drawing and drawing can be avoided; in addition, the problem of shadow in the tracing is avoided by the light from bottom to top in the scheme, and the adjustable angle of the desktop is more convenient for the tracing work; the scheme can also be used for a handheld making platform, a large amount of details are required in the handheld making process, the vivid lines need to be carefully drawn for a long time, the cover plate can be opened and fixed at an inclined angle when the handheld making is carried out, the reflector can be arranged at the back of the cover plate, the structure that light rays at the light-transmitting plate are projected to the side face of the handheld is realized, the observation on the side face of the handheld is facilitated, and the lighting operation of the handheld is realized by using the cover plate as a background.

Description

Backlit table for design hand-painted and figurative production

technical field

The invention relates to a tool for assisting drawing or design, in particular to a backlit table used for hand-painted design and production of figures.

Background technique

In the painting work, when tracing practice, line drawing base, and pattern reproduction are required, the existing scroll and pattern need to be covered for tracing operation. During the tracing operation, the position between the upper layer of paper and the lower layer original image must be relatively fixed. , otherwise there will be a problem of inaccurate tracing of the pattern dislocation. The more traditional method is to fix the upper and lower sheets with fixing tools such as pushpins, but it usually takes a long time to trace complex patterns, usually several days or even months. Long-term tracing is prone to tearing of the paper at the pushpins. Furthermore, the problem of the paper falling off, and due to the frequent friction between the upper layer of paper and the lower layer pattern, it is also easy to cause the surface of the lower layer pattern to wear. In the traditional method, there is also a method of tracing the pattern by pressing the transparent glass. This method greatly reduces the probability of the pattern being worn, and it is relatively easier to fix. However, this method still has major drawbacks in actual operation. Tracing requires thinner paper to clearly show the content of the pattern, but in practice, when tracing the pattern, the upper body needs to lie on the desktop, and the shadow formed by the upper body affects the display of the pattern, so this method is still relatively limited in actual operation. .

There is also a method of setting auxiliary lights on the desktop to solve the problem, but this method still has no way to effectively solve the shadow on the arm in actual operation.

SUMMARY OF THE INVENTION

In view of the above situation, in order to overcome the defects of the prior art, the present invention firstly provides a backlit table for designing hand-painted production, which solves the problems of inaccurate tracing and positioning and easy displacement in the existing drawing process, and light is easy to cause shadows to affect the clear display of the pattern. question.

The technical solution is to include a table top, the table top is configured to be provided with a built-in linear light source that generates white light, and the surface of the table top is configured to be matched with a cover plate made of transparent material, the cover plate There is a movable connection structure with the desktop to form a structure in which the cover can be opened and allow paper to be put between the cover and the desktop; it includes a backlight device that is fixedly connected to the desktop, and also includes a fixed connection below the backlight device along the desktop plane. The point light sources that are arranged in the extending direction and are composed of a plurality of adjacent lamp beads, each adjacent to the point light sources are linearly arranged to form the linear light source; the backlight device includes a light-transmitting plate made of a transparent material, and also includes a light homogenizing device , the light homogenizing device comprises a light homogenizing plate made of non-translucent material arranged parallel to the light transmitting plate, a plurality of slits arranged in an array are arranged on the light homogenizing plate, and the length of each slit is the same as that of each column. The arrangement of the point light sources of the or rows is matched, and a light blocking strip corresponding to the linear light source is also provided, and the width of the light blocking strip is adapted to the width of the point light source, forming a structure for shielding the point light source , the distance between the light-homing plate and the light-transmitting plate is defined as L, each of the slits is located between the adjacent light-blocking strips, and the widths of the adjacent slits are different, forming a phase A structure with different light intensities between adjacent slits, and the distance between each adjacent slit is the same and is defined as D, the light emitted by the linear light source is diffracted through a plurality of slits, and the light is transmitted through the slits. The plate forms a structure with a uniform distribution of light intensity.

In the above or some embodiments, a light diffusing layer is also fixed on the inner side of the light-transmitting plate, and the light-homing layer is uniformly coated and fixed on the inner side of the light-transmitting plate by a light diffusing agent.

In the above or some embodiments, the traditional inorganic light diffusing agents—calcium carbonate microbeads, barium sulfate, silicon dioxide, etc., organic type LED light diffusing agents—silicone resin light diffusing agents, styrene-based light diffusing agents Light diffusing agent, acrylic light diffusing agent.

In the above or some implementations, each of the point light sources is an LED lamp bead, the wavelength range of each of the LED lamp beads is the same, and a lamp strip for packaging the LED lamp source is also included, and a plurality of the lamp strips are spaced in parallel. The linear light source is formed by a fixed arrangement, the slits are located at the gaps of the adjacent light strips, and the light blocking strips are located at the directly corresponding positions of the light strips.

In the above or some embodiments, each of the light strips further includes a wire groove located under the light strip, two sides of the wire groove are respectively provided with heat-conducting members made of heat-conducting materials, and each of the heat-conducting members runs along the light strip. It is arranged in the length direction and is integrally arranged with the light strip. The heat-conducting member includes a column extending vertically to the upper surface of the light strip, and a seat located on the lower surface of the light strip. The lower end of the seat is fixed with a heat-conducting material. The heat dissipation plate is manufactured, wherein the heat dissipation plate is a plate-like structure including a plurality of heat dissipation holes arranged in an array, and the heat dissipation plate is arranged in parallel with the light-transmitting plate.

In the above or some embodiments, the heat dissipation plate is fixedly connected to the base of each of the heat conducting members, and the heat dissipation holes are rectangular holes arranged in a matrix.

In the above or some embodiments, the desktop further includes a fixing frame, the light-transmitting plate, the light-homing plate, and the heat-dissipating plate are arranged in parallel to each other, and the fixing frame includes a frame for extending along the outer peripheral surfaces of the light-transmitting plate, the light-homing plate, and the heat-dissipating plate The surrounding side frame, the inner side of the side frame is provided with a flange structure for positioning and fixing the light-transmitting plate and the light-homing plate, and also includes an inwardly extending skirt structure located under the heat dissipation plate, and the skirt structure is arranged along the heat dissipation. It is arranged at the edge of the lower surface of the plate to form a structure in which the heat dissipation holes of the heat dissipation plate communicate with the outside world.

In the above or some embodiments, a flipping device is provided between the cover plate and the fixing frame, and the flipping device includes torsion arm springs disposed on both sides of the desktop respectively, and an edge of one end of the cover plate extends downward to form The pivot shaft, the side frame is provided with a blind hole for pivoting and matching, the end face of the pivot shaft and the end face of the blind hole are respectively provided with torsion spring holes, and each of the torsion spring holes is respectively provided with a torsion spring hole for installing torsion. The elongated hole of the arm, the two ends of the torsion arm spring respectively extend into the torsion spring, forming a structure in which the cover plate is turned upward under the action of the elastic force of the torsion arm spring; the other end of the cover plate is provided with a side frame matching The locking device forms a structure in which the cover is locked with the side frame through the locking device after the cover is closed.

In the above or some embodiments, the pivot is a rectangular block structure with a circular arc end, the blind hole includes a sliding segment and a rotating segment connected to the sliding segment, the rotating segment and the sliding segment arc In transition, the torsion spring hole located at the side frame is a long slot-shaped sliding hole, forming a structure in which the torsion arm spring slides along the sliding section with the pivot and rotates in the rotating section, and the locking structure includes a lock located at the side frame. The corresponding lower edge of the cover plate is provided with a lock catch, forming a structure in which the lock catch and the lock groove form a plug connection after the pivot shaft slides into the sliding section.

In the above or in some embodiments, a table belly is also provided below the table top, and the table belly is an open or semi-open cavity structure surrounded by a plate-like structure, and the table belly is also rotatably connected with a support The support frame is fixedly connected with the table belly through the damping shaft with adjustable resistance.

In the above or some embodiments, the damping shaft includes a fixed section fixedly connected to the table belly, and further includes a damping section fixedly connected to the support frame, the damping section is located between the fixed sections to form a structure in which the fixed section overcomes resistance and rotates relatively , a damping structure is arranged between the damping section and the fixed end.

In the above or some embodiments, the rotating section and the fixed section are hollow cylindrical structures with variable diameters, the fixed section includes a countersunk head screw located at the head of the fixed section and rotatably fitted with the fixed section, and also includes a The adjusting friction shaft is located at the other end of the fixed section. The adjusting friction shaft is slidably fitted with the inner wall of the fixed section through the spline. Axial moving structure, the other end of the adjustment friction shaft is provided with concentric annular friction teeth, the friction teeth form a wedge-shaped annular groove, and the corresponding rotating segment is provided with a passive friction fit with the friction shaft. The driven shaft is provided with passive teeth that mesh with the friction teeth. When the friction teeth are far away from or close to the driven shaft, a structure in which the friction shaft and the passive shaft are in close or out of frictional contact through a wedge-shaped annular groove is formed. One end part of the driven shaft penetrates into the rotation section and forms a rotation-stop fit with the rotation section, the driven shaft includes a rotation-stop hole, and the rotation section is provided with a plug-in shaft that is inserted into the rotation-stop hole to form a rotation-stop fit Structure.

Compared with the prior art solution, this solution adopts the light-diffraction principle to realize the redistribution of the light by the homogenizing plate, and further strengthens the dispersion of the light through the light diffusing layer, so as to realize the softer light and avoid the long-term exposure of the table under the direct light source. The eyes of drawing and tracing are easy to get tired and dizzy; and in this scheme, the light from bottom to top avoids the shadow problem in tracing, and the adjustable angle of the desktop is more convenient for drawing work; and this scheme can also be used for manual The platform for the production of the figure, a large number of details must be pursued in the production process of the figure, and the lines of the image need to be carefully outlined for a long time, and when the figure is produced, the cover of this scheme can be opened and fixed at an inclined angle. At this time, a reflector can be set on the back of the cover to realize the structure of hitting the light from the light-transmitting plate to the side of the figure, which is convenient for observing the side of the figure and using the cover as the background to realize the lighting operation of the figure.

Description of drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic view of the side structure of the desktop of the present invention.

3 is a schematic diagram of the installation structure of the torsion arm spring in the present invention.

4 is a schematic structural diagram of a linear light source formed by a light strip in the present invention.

FIG. 5 is a schematic structural diagram of a desktop in the present invention.

FIG. 6 is a schematic structural diagram of a heat dissipation plate in the present invention.

FIG. 7 is a schematic diagram of the structure of the lamp festival in the present invention.

FIG. 8 is a schematic structural diagram of the damping shaft in the present invention.

FIG. 9 is an enlarged schematic diagram of part A in FIG. 2 .

Detailed ways

The specific embodiments will be further described in detail below with reference to the accompanying drawings.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The technical solution is that it includes a table top 100, the table top 100 is provided with a cover plate 101 made of a transparent material such as acrylic or tempered glass material, and a matching structure is formed between the cover plate 101 and the table top 100, so that the cover plate 101 can be opposite to the table top 100. The structure that is opened or flipped relative to the edge of the table top 100 forms a structure in which the pattern can be placed between the cover plate 101 and the table top 100. Preferably, a flip device is provided between the cover plate 101 and the fixed frame 108. The torsion arm springs located on both sides of the desktop 100, the pivot shaft 101a extending downward from one end edge of the cover plate 101, the side frame is provided with a blind hole 101b for the pivot shaft 101a to rotate and cooperate, and the end face of the pivot shaft 101a and the blind hole The end faces of the torsion springs 101b are respectively provided with torsion spring holes 101c, and each of the torsion spring holes 101c is respectively provided with a long hole for installing the torsion arm. In the structure of flipping upwards under the action of spring elastic force, the other end of the cover plate 101 is provided with a locking device that cooperates with the side frame, forming a structure in which the cover plate 101 is locked with the side frame by the locking device after the cover plate 101 is closed.

In the above or some embodiments, the pivot 101a can be configured as a rectangular block structure with a circular arc end, the blind hole 101b includes a sliding section 101b1 and a rotating section 101b2 connected to the sliding section 101b1, the rotating section 101b2 and the sliding section Arc transition, the torsion spring hole 101c located at the side frame is a long slot-shaped sliding hole, forming a structure in which the torsion arm spring slides along the sliding section with the pivot 101a and rotates on the rotating section 101b2, and the locking structure includes a For the lock slot, a lock is provided at the lower edge of the cover plate 101 , forming a structure in which the pivot 101a slides into the sliding section and the lock is inserted into the lock slot.

In the above or in some embodiments, a table belly 109 is further provided below the table top 100, the table belly 109 is an open or semi-open cavity structure surrounded by a plate-like structure, and the table belly 109 is also rotatably connected There is a support frame 110, and the support frame 110 is fixedly connected with the table belly 109 through the damping shaft 200 with adjustable resistance.

In the above or some embodiments, the damping shaft 200 includes a fixed section 201 that is fixedly connected to the table belly 109 , and also includes a damping section 202 that is fixedly connected to the support frame 110 , and the damping section 202 is located between the fixed sections 201 to form a fixed connection. The damping section 202 and the fixed end are provided with a damping structure; both the rotating section and the fixed section are hollow cylindrical structures with variable diameters, and the fixed section 201 includes a The countersunk head screw 203 rotatably cooperates with the fixed section 201. The countersunk head screw includes a threaded section and an optical shaft section, wherein the optical shaft section is provided with a concave slip ring, and the corresponding fixed section is provided with a fastening screw. The lower end of the fastening screw It is sunk into the slip ring to form a structure in which the countersunk head screw can be rotated but can be positioned axially. It also includes an adjustment friction shaft 204 located at the other end of the fixed section 201. The adjustment friction shaft 204 is connected to the inner wall of the fixed section 201 through splines. Sliding fit, one end of the adjusting friction shaft 204 is threaded with the screw to form a structure in which the axial movement of the adjusting friction shaft 204 is changed by the thread movement of the countersunk head screw 203, and the other end of the adjusting friction shaft 204 is provided with a concentric annular Friction teeth 205, the friction teeth form a wedge-shaped annular groove, the corresponding rotating segment 101b2 is provided with a passive shaft 206 that forms a friction fit with the friction shaft, and the passive shaft 206 is provided with a passive shaft 206 engaged with the friction teeth Teeth 207, when the friction teeth are far away from or close to the driven shaft 206, form a structure in which the friction shaft and the driven shaft 206 are in close or out of frictional contact through a wedge-shaped annular groove, and one end of the driven shaft 206 penetrates deep into the rotating section 101b2 The driven shaft 206 includes an anti-rotation hole 208, and the rotating section 101b2 is provided with a plug-in shaft that is inserted into the anti-rotation hole 208 to form a structure of anti-rotation matching.

In the above or some embodiments, the backlight device is located under the cover plate 101 as a part of the desktop 100, and includes a light-transmitting plate 102 made of a transparent material, wherein the light-transmitting plate 102 is formed by fixed cooperation with the side frame The planar structure of the desktop 100 further includes a light homogenizing device located at a position below the backlight device and arranged in parallel with the light-transmitting plate 102 . 103, the distance between the light-homing plate 103 and the light-transmitting plate 102 is defined as L, each of the slits 103a is located between the adjacent light-blocking strips 103b, and the width of the adjacent slits 103a is different, forming a structure with different light intensities passing through the adjacent slits 103a, and the distance between the adjacent slits 103a is the same and defined as D, the light emitted by the linear light source passes through a plurality of slits 103a is diffracted and a structure with uniform light intensity distribution is formed on the light-transmitting plate 102. The light emitted by the LED linear light source cannot be directly directed to the lower side of the light-transmitting plate 102 through the blocking of the light-blocking band 103b. The slit 103a forms diffraction, and the geometric shadow position formed by the backlight strip is scattered to the light source of the light diffusion layer 104 due to the diffraction phenomenon of light, and the light intensity passing through the slit 103a is also weakened to realize the structure of uniform distribution of light. . In one embodiment, according to the theory of multi-slit interference fringes, the mixed light interference will not cause obvious interference fringes due to different light intensities and different frequencies, but the interference phenomenon will still flourish, and the light will bypass the barrier of the light blocking band 103b Breaking through the shadow area of the light-blocking band 103b achieves the technical effect of preventing the shadow area from appearing, and at the same time, each adjacent light source will produce a diffraction phenomenon, thereby realizing the technical effect of re-dispersing the light of the light source and making the light softer; the desktop 100 also It includes a fixing frame 108. The light-transmitting plate 102, the light-homing plate 103, and the heat-dissipating plate 107 are arranged in parallel with each other. The frame 108a, the inner side of the side frame 108a is provided with a flange structure for positioning and fixing the light-transmitting plate 102 and the light-homing plate 103, and also includes an inwardly extending skirt structure 108b located under the heat dissipation plate 107. The skirt structure 108b is disposed along the edge of the lower surface of the heat dissipation plate 107 to form a structure in which the heat dissipation holes of the heat dissipation plate 107 communicate with the outside world.

In the above or some embodiments, the linear light source that generates white light, the point light source composed of a plurality of adjacent lamp beads arranged along the plane extending direction of the desktop 100, and the linear arrangement of each adjacent point light source forms the linear light source, Each of the point light sources are all LED lamp beads 105, preferably the model can be 0603, converted to metric system is 1608, which means that the length of the LED element is 1.6mm, the width is 0.8mm, the industry abbreviation is 1608, and the imperial name is 0603 ; The number of columns of LED light sources can be set according to the selection of light intensity, which can be a single column or a multi-column structure arranged next to each other. The wavelength range of each of the LED lamp beads 105 is the same, and the white light is a kind of composite light. Monochromatic light is formed after verification, so the light generated by each light source cannot produce obvious interference fringes, and also includes a light strip 106 for encapsulating the LED light source, and a plurality of the light strips 106 are arranged in parallel and at regular intervals to form the linear light source , the light homogenizing plate 103 is provided with a plurality of slits 103a arranged in an array, the length of each slit 103a is matched with the arrangement of point light sources in each column or row, and a light blocking corresponding to the linear light source is also provided Strip 103b, the width of the light-blocking strip 103b is adapted to the width of the point light source, forming a structure for shielding the point light source, the slit 103a is located at the gap of each adjacent light strip 106, the light blocking The strip 103b is located at the corresponding position of the light strip, and the light blocking strip 103b is made of a thin non-transparent material, such as aluminum, copper and other metal foils, and the width of the slit 103a is selected to be 0.1-0.5mm, in order to further control the homogenizing plate. For the astigmatism effect of 103, the width of the adjacent slits 103a can be made of different sizes of wide slits 103a, for example, a slit 103a selects 0.2mm, and the adjacent slit 103a selects 0.4mm, through different widths of the slits 103a. The light intensity of the slit 103a is uniformly distributed by means of an array, and at the same time, the appearance of interference fringes is further avoided with different light intensities. The uniform redistribution avoids the effect of light glare that is not soft and uniform when the LED light source is directly illuminated. In order to further realize the soft and uniform light at the transparent plate, the inner side of the light transmission plate 102 is also fixed with a light diffusion layer 104. The light-homogeneous layer is uniformly coated and fixed on the inner side of the light-transmitting plate 102 by a light-diffusing agent. The light-diffusing agent includes traditional inorganic light-diffusing agents—calcium carbonate microbeads, barium sulfate, silicon dioxide, etc., organic type LED light diffusing agent - silicone resin light diffusing agent, styrene type light diffusing agent, acrylic light diffusing agent, etc. In this scheme, a more traditional inorganic light diffusing agent is selected.

In the above or some implementations, each of the light strips 106 further includes a wire slot 106a located below the light strip 106, and two sides of the wire slot 106a are respectively provided with thermally conductive members 106b made of thermally conductive materials. The heat conducting member 106b is disposed along the length direction of the light strip 106 and integrally formed with the light strip 106. The heat conducting member 106b includes a column extending vertically to the upper surface of the light strip 106, and also includes a seat located on the lower surface of the light strip 106, so A heat dissipation plate 107 made of thermally conductive material is fixed at the lower end of the base. The heat dissipation plate 107 is a plate-like structure including a plurality of heat dissipation holes arranged in an array. The heat dissipation plate 107 is parallel to the light-transmitting plate 102 The heat dissipation plate 107 is fixedly connected to the base of each of the heat conducting members 106b, and the heat dissipation holes are rectangular holes arranged in a matrix; the LED lamp beads 105 are cold light sources that generally do not generate heat, but the lamp strips 106 are used as LEDs. A certain amount of heat will be generated at the location where the lamp beads 105 are packaged and welded due to the resistance effect of the current. In order to avoid overheating of the dense LED lamp beads 105, a heat conducting member 106b made of a thermally conductive material including but not limited to copper is provided in the light strip 106, The heat is transferred to the heat dissipation plate 107 through the heat-conducting member 106b. On the other hand, an upwardly concave wire slot 106a is arranged under the strip. The function of the wire slot 106a is not only that it can be used as the wire arrangement of the light strip 106, and the recess of the wire slot 106a is in the Correspondingly, the heat dissipation plate 107 enhances the heat exchange between the wire grooves 106a and the outside through the heat dissipation holes. In order to control the problem of damage and replacement of the linear light source, each light strip 106 is preferably composed of a plurality of segment-shaped lamp segments, and each lamp segment is movably connected by magnetic adsorption or other easy connection methods, and each lamp segment is a The complete circuit, that is, the LED lamp beads 105 on each lamp section are connected in parallel through independent power supply lines. In order to further control the connection and fixed position between adjacent lamp strips 106, the middle position of each lamp section There are fixing strips 111 extending vertically to both sides respectively at the place, and the fixing strips are still fixedly connected by magnetic adsorption or other easy connection methods to form the position and fixed connection between the light strips 106 .

Those of ordinary skill in the art will recognize that the directional terms such as "upper", "lower", "outer", "inner" are the description terms for the accompanying drawings, and do not represent the protection scope defined by the claims. limits. Although the Examples section introduces some implementations of the scheme, it does not mean that the embodiments not recorded in this scheme are not within the protection scope of this scheme, and the technical solutions obtained by simple replacement still belong to the protection scope of this scheme.

Claims (9)

1. The backlight table for designing the hand painting and the hand writing comprises a table top (100), wherein the table top (100) is configured to be provided with a built-in linear light source for generating white light, the surface of the table top (100) is configured to be matched and provided with a cover plate (101) made of a transparent material, a movable connecting structure is arranged between the cover plate (101) and the table top (100), and a structure is formed, wherein the cover plate (101) can be opened and paper can be placed between the cover plate (101) and the table top (100); the table is characterized by comprising a backlight device fixedly connected with a table top (100), and also comprising point light sources which are positioned below the backlight device, fixedly connected and arranged along the plane extension direction of the table top (100) and formed by a plurality of lamp beads close to each other, wherein the point light sources close to each other are linearly arranged to form the linear light source; the backlight device comprises a light-transmitting plate (102) made of transparent materials and a light-homogenizing device, wherein the light-homogenizing device comprises a light-homogenizing plate (103) which is arranged in parallel with the light-transmitting plate (102) at intervals and made of non-light-transmitting materials, a plurality of slits (103a) are arranged on the light-homogenizing plate (103) in an array mode, the length of each slit (103a) is matched with the arrangement of each row or line of point light sources, a light blocking band (103b) which is right corresponding to the linear light source is further arranged, the width of each light blocking band (103b) is matched with the width of each point light source to form a structure for shielding the point light sources, the distance between the light-homogenizing plate (103) and the light-transmitting plate (102) is defined as L, each slit (103a) is respectively positioned between the adjacent light blocking bands (103b), the widths of the adjacent slits (103a) are different, and structures with different light intensities entering the adjacent slits, and the distance between every two adjacent slits (103a) is the same and is defined as D, and the light emitted by the linear light source is diffracted by the slits (103a) and forms a structure with uniformly distributed light intensity on the light-transmitting plate (102).

2. The backlight table for designing hand-drawing and hand-writing production as claimed in claim 1, wherein a light diffusion layer (104) is further fixedly arranged on the inner side surface of the light-transmitting plate (102), and the light uniformizing layer is uniformly coated and fixed on the inner side surface of the light-transmitting plate (102) by a light diffusing agent.

3. The backlight table for designing hand-drawing and hand-writing products as claimed in claim 1 or 2, wherein each point light source is an LED lamp bead (105), the wavelength range of each LED lamp bead (105) is the same, the backlight table further comprises a lamp strip (106) for packaging the LED lamp sources, the plurality of lamp strips (106) are fixedly arranged in parallel at intervals to form the linear light source, the slit (103a) is located in a gap between every two adjacent lamp strips (106), and the light blocking strip (103b) is located right corresponding to the light strip.

4. The backlight table for designing hand-drawing and hand-handling production according to claim 3, wherein each light strip (106) further comprises a wire groove (106a) located below the light strip (106), heat conducting members (106b) made of heat conducting materials are respectively arranged on two sides of the wire groove (106a), each heat conducting member (106b) is arranged along the length direction of the light strip (106) and is integrally arranged with the light strip (106), each heat conducting member (106b) comprises a column vertically extending to the upper surface of the light strip (106), the backlight table further comprises a base body located on the lower surface of the light strip (106), a heat dissipation plate (107) made of heat conducting materials is fixedly arranged at the lower end of the base body, the heat dissipation plate (107) is of a plate-shaped structure comprising a plurality of heat dissipation holes arranged in an array, and the heat dissipation plate (107) is arranged in parallel to the light transmission plate (102.

5. The backlight table for designing hand painting and hand handling according to claim 3, wherein the table top (100) further comprises a fixing frame (108), the light-transmitting plate (102), the light-equalizing plate (103) and the heat dissipation plate (107) are arranged in parallel, the fixing frame (108) comprises a side frame (108a) surrounding the outer peripheral surfaces of the light-transmitting plate (102), the light-equalizing plate (103) and the heat dissipation plate (107), a flange structure for positioning and fixing the light-transmitting plate (102) and the light-equalizing plate (103) is arranged on the inner side of the side frame (108a), and an inwardly extending skirt structure (108b) located below the heat dissipation plate (107) is further included, the skirt structure (108b) is arranged along the edge of the lower surface of the heat dissipation plate (107) to form a structure for communicating the heat dissipation holes of the heat dissipation plate (107) with the outside.

6. The backlight table for designing hand-drawing and hand-handling production according to claim 3, wherein a turning device is arranged between the cover plate (101) and the fixing frame (108), the turning device comprises torsion arm springs respectively arranged at two sides of the table top (100), a pivot (101a) formed by downward extending of one end edge of the cover plate (101), a blind hole (101b) for rotatably matching the pivot (101a) is formed in the side frame, spring holes (101c) are respectively formed in the end surface of the pivot (101a) and the end surface of the blind hole (101b), a long hole for installing a torsion arm is respectively formed in each torsion spring hole (101c), and a torsion spring is respectively inserted into each torsion arm spring at two ends to form a structure that the cover plate (101) is turned upwards under the action of the elastic force of the torsion arm springs; and a locking device matched with the side frame is arranged at the other end of the cover plate (101), so that a structure that the cover plate (101) covers the rear cover plate (101) and is locked with the side frame through the locking device is formed.

7. The backlight table for designing hand-painting and hand-writing of claim 7, wherein the pivot (101a) is a rectangular block structure with a circular arc end, the blind hole (101b) comprises a sliding section (101b1) and a rotating section (101b2) connected with the sliding section (101b1), the rotating section (101b2) is in circular arc transition with the sliding section, a torsion spring hole (101c) at the side frame is a long groove-shaped sliding hole, a structure that a torsion arm spring slides along the sliding section along the pivot (101a) and rotates at the rotating section (101b2) is formed, the locking structure comprises a locking groove at the side frame, a lock catch is arranged at the lower edge of the corresponding cover plate (101), and a structure that the pivot (101a) forms a plug-connection with the lock groove after sliding into the sliding section along the sliding section is formed.

8. The backlight table for designing the hand painting and the hand office production according to any one of claims 4 to 7, wherein a table belly (109) is further arranged below the table top (100), the table belly (109) is formed into an open or semi-open cavity structure by enclosing a plate-shaped structure, the table belly (109) is further rotatably connected with a support frame (110), and the support frame (110) is fixedly connected with the table belly (109) through a damping shaft (200) capable of adjusting resistance.

9. The backlight table for designing hand-drawing and hand-handling production according to claim 9, wherein the damping shaft (200) comprises a fixing section (201) fixedly connected with the table belly (109), and further comprises a damping section (202) fixedly connected with the support frame (110), the damping section (202) is located between the fixing sections (201) to form a structure that the fixing section overcomes resistance to rotate relatively, and a damping structure is arranged between the damping section (202) and the fixing end.

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