Double-polarized-light LED lighting device and installation method

Abstract

The invention belongs to the technical field of LED lighting, and discloses a double-polarized light LED lighting device and an installation method.The double-polarized light LED lighting device comprises a lamp holder assembly, the lamp holder assembly comprises a frame, a double-polarized light guide plate, a diffusion plate, a transparent protective cover, a cover plate, a long-edge light source plate and a short-edge light source plate, and the backlight face of the double-polarized light guide plate is provided with first polarized light parts and second polarized light parts which are alternately distributed; the reflector is used for refracting and reflecting light; light enters the double-polarized light guide plate through refraction and then is scattered to all directions of the double-polarized light guide plate, when the light irradiates the first polarized light part and the second polarized light part, part of the light enables the light intensity center of the light emitted from the upper portion of the lamp holder assembly to deviate through the refraction effect, and then the light finally falls to the center of a table top after being subjected to diffuse reflection of a ceiling. And the other part of light is refracted after diffuse reflection, is emitted from the front surface of the light guide plate, and is diffused from all angles of the front surface after uniform diffusion, so that the utilization efficiency of the light is improved, efficient light control and distribution are realized, and a more comfortable and ideal illumination effect is provided.

Description

Technical Field

[0001] The present invention relates to the technical field of LED lighting, and in particular to a dual-polarized LED lighting device and an installation method. Background Art

[0002] In modern office and home environments, LED lighting devices are widely used in various lighting needs due to their high efficiency, energy saving and long life. Especially in the field of desktop lighting, users have higher requirements for the uniformity of light and the position of the center of light intensity to ensure a comfortable working and learning environment. With the development of technology, how to better control the distribution of light and improve user experience has become an important topic in the industry.

[0003] In the prior art, table light panels usually achieve light diffusion and uniform illumination by evenly arranging multiple scattered lamp beads on the light panel surface. Although this design can improve the uniformity of light to a certain extent, it has an obvious disadvantage: the center of light intensity is usually located directly below the light panel. This is offset from the user's ideal light-collecting position, especially when the lamp is installed in a corner of the desktop, it cannot effectively cover the central area of ​​the desktop. This offset causes the user to adjust the position in actual use to obtain the ideal lighting effect, which reduces the user experience.

[0004] Therefore, how to optimize the position of the light intensity center to make it more in line with user needs is a problem that needs to be solved urgently in the existing technology. Summary of the invention

[0005] The purpose of the present invention is to provide a dual-polarized LED lighting device and an installation method to solve the above technical problems.

[0006] To achieve this object, the present invention adopts the following technical solutions: A dual-polarized LED lighting device, comprising a lamp head assembly, wherein the lamp head assembly comprises a frame, a dual-polarized light guide plate, a diffusion plate, a transparent protective cover, a cover plate, a long-side light source plate and a short-side light source plate; wherein the long-side light source plate and the short-side light source plate are respectively arranged on a long side and a short side adjacent to the frame; The transparent protective cover covers the bottom of the lamp head assembly, the diffuser plate and the dual-polarized light guide plate are sequentially mounted on the transparent protective cover, and the cover plate is mounted on the top of the frame to close the lamp head assembly; Among them, the backlight surface of the dual-polarization light guide plate is provided with a first polarization portion and a second polarization portion alternately distributed, the first polarization portion includes a plurality of conical dot holes distributed in an array, the second polarization portion is a raised portion, and the first polarization portion and the second polarization portion together form a diffuse reflection layer for refraction and reflection of light.

[0007] Optionally, the protrusion is any one of a strip-shaped triangular column, a strip-shaped conical column or a strip-shaped cone; Wherein, the protrusion is arranged in parallel with the long side light source plate, and the protrusion is used to refract and reflect the light of the long side light source plate.

[0008] Optionally, the first polarizer and the second polarizer are respectively integrally injection-molded with the dual-polarization light guide plate; Alternatively, the first polarizing unit and the second polarizing unit are formed on the backlight surface of the dual-polarizing light guide plate by engraving.

[0009] Optionally, a photosensitive element is provided on the lower end surface of the lamp head assembly, and the photosensitive element is used to detect light intensity distribution information; An annular airbag is arranged between the dual-polarized light guide plate and the diffuser plate, the annular airbag matches the edge of the frame, and the annular airbag is connected to a micro air pump, which is used to supply air to the annular airbag to change the gap thickness between the dual-polarized light guide plate and the diffuser plate.

[0010] Optionally, it further comprises a lamp pole and a base, wherein the lamp head assembly is arranged at a first end of the lamp pole, and the base is arranged at a second end of the lamp pole, and the base is used to support the lamp pole and the lamp head assembly; A control unit is arranged inside the lamp pole, and the control unit is electrically connected to the long-side light source board and the short-side light source board.

[0011] Optionally, the lamp pole includes a first rod body, and a second rod body slidably sleeved on an upper end of the first rod body; The lower end of the second rod body is provided with an adjustment button, one end of the adjustment button is provided with a locking piece, and an elastic reset piece is provided between the adjustment button and the locking piece; The first rod body is provided with a plurality of height adjustment gears along its length direction, and the adjustment button is pressed to connect the locking member to any of the height adjustment gears.

[0012] Optionally, a sensor is provided on the first end surface of the adjustment button, and the sensor is used to sense the height of the height adjustment gear connected to the locking member; A prompt light is disposed on the second end surface of the adjustment button, and the prompt light is connected to the control unit.

[0013] The present invention also provides a method for installing a dual-polarized LED lighting device, which is applied to installing the dual-polarized LED lighting device as described above, wherein the dual-polarized LED lighting device further includes a lamp pole and a base; The installation method comprises: The base of the dual-polarized LED lighting device is installed at a corner of the desktop, and the lamp head assembly is started at the same time to emit light to illuminate the desktop; The control unit preliminarily selects the best height adjustment position by obtaining light intensity distribution information of the desktop according to the photosensitive element on the lower end surface of the lamp head assembly; According to the indication of the warning light on the lamp pole, the height gear of the lamp pole is adjusted to the optimal height adjustment gear; wherein, when the locking member of the lamp pole is adjusted to the corresponding height adjustment gear, the warning light on the lamp pole is displayed in green; The control unit calculates the optimal air gap height between the dual polarized light guide plate and the diffuser plate according to the light intensity distribution information; The air pressure of the annular airbag between the dual-polarized light guide plate and the diffuser plate is adjusted through the optimal air gap height to optimize the center position of the light intensity so that the center of the light intensity falls on the center of the desktop to complete the installation.

[0014] Optionally, the light intensity distribution information of the desktop is obtained according to the photosensitive element on the lower end surface of the lamp head assembly, and the control unit preliminarily selects the best height adjustment gear, which specifically includes: The acquired light intensity distribution information is transmitted to the control unit, and the control unit divides the desktop into a plurality of sub-areas and analyzes the light intensity data of each sub-area; According to the light intensity data of each sub-area, the position deviation degree of the light intensity center is determined; Combined with the preset light intensity distribution standard, the optimal height adjustment position for adjusting the light pole height so that the light intensity center is close to the center of the desktop is preliminarily calculated; The preliminary calculated optimal height adjustment gear information is transmitted to the warning light on the light pole.

[0015] Optionally, the control unit calculates the optimal air gap height between the dual-polarized light guide plate and the diffuser plate according to the light intensity distribution information, specifically including: According to the light intensity distribution information, the position and offset degree of the current light intensity center are determined; wherein the preset light intensity distribution model uses the light intensity value of each light intensity point as the quality value based on the light intensity points at multiple positions to calculate the center of gravity of the entire desktop light intensity distribution, i.e., the light intensity center; The preset light intensity distribution model is used to evaluate the influence of different air gap heights on the light refraction angle and the center position of light intensity. The optimal air gap height for adjustment is calculated in combination with the offset direction and degree of the light intensity center; the calculated optimal air gap height is output to drive the air pressure adjustment of the annular airbag to achieve the optimization of the light intensity center.

[0016] Compared with the prior art, the present invention has the following beneficial effects: when working, the dual-polarized LED lighting device is pre-installed at a corner of the desktop, and the lamp head assembly guides the light into the dual-polarized light guide plate through the long-side light source plate and the short-side light source plate, and scatters the light to various directions of the light guide plate. When the light hits the first polarized part and the second polarized part, a part of the light is refracted and emitted from the back of the light guide plate to diffuse at various angles. The refraction effect causes the light intensity center of the light emitted from the top of the lamp head assembly to shift, and finally falls on the center of the desktop after diffuse reflection from the ceiling; the other part of the light is diffusely reflected and then refracted from the front of the light guide plate The light is emitted, and then is evenly distributed in the entire luminous surface area after being homogenized by the diffusion plate. It is then refracted by the transparent protective cover and diffused from all angles on the front side, making the light evenly distributed in the entire light panel area, and finally emitted outward through the transparent protective cover, solving the problem of light intensity center offset in traditional table light panels. This design not only improves the light utilization efficiency, but also through the first polarizing part and the second polarizing part, can make the light guide plate emit light evenly and cause the light intensity center to shift significantly, thus achieving efficient light control and distribution, and also greatly improving the user experience, providing a more comfortable and ideal lighting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0019] Figure 1 Schematic diagram of the overall structure of the dual-polarized LED lighting device; Figure 2 This is a schematic diagram of the desktop installation structure of the dual-polarized LED lighting device; Figure 3 This is a schematic diagram of the exploded structure of the lamp holder assembly of the dual-polarized LED lighting device; Figure 4 This is a schematic diagram of the structure of the dual-polarized light guide plate and the light source plate of the dual-polarized LED lighting device; Figure 5A schematic diagram of light propagation of a dual-polarized light guide plate of the dual-polarized LED lighting device; Figure 6 A schematic diagram of a first outgoing light path of a dual-polarization light guide plate of the dual-polarization LED lighting device; Figure 7 Schematic diagram of the second outgoing light path of the dual-polarization light guide plate of the dual-polarization LED lighting device. DETAILED DESCRIPTION

[0020] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0022] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0023] Embodiment 1: Combination Figures 1 to 5 As shown, the embodiment of the present invention provides a dual-polarized LED lighting device, including a lamp head assembly 10, the lamp head assembly 10 includes a frame 11, a dual-polarized light guide plate 12, a diffuser 13, a transparent protective cover 14, a cover plate 15, a long-side light source plate 16 and a short-side light source plate 17; wherein the long-side light source plate 16 and the short-side light source plate 17 are respectively arranged on a long side and a short side adjacent to the frame 11; the transparent protective cover 14 covers the bottom of the lamp head assembly 10, the diffuser 13 and the dual-polarized light guide plate 12 are sequentially installed on the transparent protective cover 14, and the cover plate 15 is installed on the top of the frame 11 to close the lamp head assembly 10. wherein the long-side light source plate 16 and the short-side light source plate 17 are both LED light boards.

[0024] Please combine Figure 4 and Figure 5 analyze, Figure 41 is an axial view of the components between the light source plate and the dual-polarized light guide plate 12, wherein a light path propagation route map is shown in the dual-polarized light guide plate 12. Since the light source plate emits diffuse light in multiple emission directions, one representative angle is selected here for analysis. The outgoing light will be refracted at least twice in the dual-polarized light guide plate 12. The first refraction is at a point a where the light enters the dual-polarized light guide plate 12. Here, since the light enters the medium from the air, its refraction angle will decrease, and then it will be emitted into the air through the first polarizing portion 121 ( Figure 4 Here, since the light enters the air from the medium and the first polarizing portion 121 has an inclined groove wall, its refraction angle will be greatly increased. Different from the conventional propagation medium, the light emitted by the first polarizing portion 121 after refraction will be closer to the lamp head assembly 10 in this solution; This process can be combined with Figure 6 From the analysis of the first outgoing light path, it can be seen that the first outgoing light path diffuses in an inclined upward direction. Then, under the refraction of the first polarizing portion 121, the inclination angle (the angle with the vertical direction) of the first polarizing portion 121 will be larger, and after being reflected by the ceiling, it will also be more concentrated in the direction of the lamp head assembly 10, thereby achieving the effect of the light intensity center moving closer to the center of the table.

[0025] Combination Figure 5 , Figure 5 The top view of the components between the light source plate and the dual polarized light guide plate 12 is shown in FIG. Figure 4 The same or similar to that shown, please note that the outgoing light emitted from point b in the figure is emitted upward by the inclined dual-polarization light guide plate 12 (the figure is the projection line of the actual propagation light path), rather than being propagated horizontally.

[0026] Among them, the backlight surface of the dual-polarization light guide plate 12 is provided with a first polarization portion 121 and a second polarization portion 122 which are alternately distributed. The first polarization portion 121 includes a plurality of conical dot holes distributed in an array, and the second polarization portion 122 is a raised portion. The first polarization portion 121 and the second polarization portion 122 together form a diffuse reflection layer for refraction and reflection of light.

[0027] Combination Figure 4 and Figure 5 As shown, it should be noted that the second polarizing unit 122 is arranged parallel to the long side light source plate 16, and the other side is the short side light source plate 17. Figure 4 The diagram in which the second polarizing units 122 are divided into two groups is used to magnify the structure of the second polarizing units 122 . Actually, the second polarizing units 122 are provided in multiple groups, and the same is true for the first polarizing units 121 .

[0028] To further explain, the function of the long side light source plate 16 is as follows: light is emitted from the long side light source plate 16 and obliquely incident on the dual polarized light guide plate 12. Due to the arrangement of the conical mesh holes, the light is refracted and diffusely reflected multiple times in the light guide plate. This arrangement causes the light to be deflected in the horizontal direction, changing the original propagation direction of the light.

[0029] Function of the short side light source plate 17: The light from the short side light source is diffused perpendicular to the long side through the same structure. This diffusion ensures that the light can be evenly distributed in both axial directions to avoid being concentrated on one side.

[0030] It should be noted that light is introduced through the side walls and end faces of the dual-polarized light guide plate 12, and the light is refracted and reflected by the strip-shaped conical dots and raised portion structures provided on the back, so as to achieve uniform distribution of light and polarized illumination.

[0031] The working principle of the present invention is as follows: when working, the dual-polarized LED lighting device is pre-installed at a corner of the desktop, and the lamp head assembly 10 guides the light into the dual-polarized light guide plate 12 through the long-side light source plate 16 and the short-side light source plate 17 and scatters the light to various directions of the light guide plate. When the light hits the first polarizing portion 121 and the second polarizing portion 122, a portion of the light is refracted and emitted from the back of the light guide plate to diffuse at various angles. The refraction effect causes the light intensity center of the light emitted from the top of the lamp head assembly 10 to shift, and then finally falls on the center of the desktop after diffuse reflection from the ceiling; the other portion of the light is diffusely reflected and then refracted and emitted from the front of the light guide plate to diffuse at various angles. The light is evenly distributed in the entire light-emitting surface area after being homogenized by the diffusion plate 13, and then refracted by the transparent protective cover and diffused from all angles on the front side, so that the light is evenly distributed in the entire light panel area, and finally emitted outward through the transparent protective cover, thereby solving the problem of light intensity center offset in traditional table light panels. This design not only improves the light utilization efficiency, but also enables the light guide plate to emit light evenly and cause a significant offset in the light intensity center through the first polarizing part 121 and the second polarizing part 122, thereby achieving efficient light control and distribution, and greatly improving the user experience, providing a more comfortable and ideal lighting effect.

[0032] Among them, combined Figure 6 and Figure 7 As shown, they are respectively the first outgoing light path and the second outgoing light path of the light emitted by the lamp head assembly 10, the first outgoing light path is the light path of the light refracted on the back side of the dual-polarized light guide plate 12, and the second outgoing light path is the light path diagram after the light is diffusely reflected and scattered on the front side of the dual-polarized light guide plate 12; In the first output light path, when the light hits the first polarizing portion 121 and the second polarizing portion 122, a portion of the light is refracted and emitted from the back of the light guide plate to diffuse at various angles. The refraction effect causes the light intensity center of the light emitted from the top of the lamp head assembly 10 to shift, and then the light is diffusely reflected by the ceiling and finally falls on the center of the desktop.

[0033] It should be noted that the outgoing light of the lamp holder assembly 10 in the present embodiment is not emitted from a single lower end face, but is formed through a first outgoing light path on the back and a second outgoing light path on the front, thereby forming a uniform diffuse light. On the one hand, the first outgoing light path can make the light guide plate emit light uniformly and cause the light intensity center to shift significantly through the action of the first polarizing portion 121 and the second polarizing portion 122, thereby adjusting the light intensity center of the irradiated light and solving the problems existing in the prior art. On the other hand, the uniform diffuse light directly emitted from the front can also improve the user comfort.

[0034] In this embodiment, the raised portion is any one of a strip-shaped triangular column, a strip-shaped conical column or a strip-shaped conical column; wherein the raised portion is arranged parallel to the long side light source plate 16, and the raised portion is used to refract and reflect the light of the long side light source plate 16. Among them, since there are multiple raised portions, the raised portions can also be distributed in a combination of the above-mentioned shapes.

[0035] It should be noted that the raised portion is designed as a strip-shaped triangular prism, a strip-shaped conical column or a strip-shaped cone, and these geometric shapes help to effectively refract and reflect light. The raised portion is arranged parallel to the long side light source plate 16. This arrangement can optimize the propagation path of light, so that the light is more evenly distributed in the light guide plate, and ultimately improve the lighting effect.

[0036] As an optional solution of this embodiment, the first polarizing portion 121 and the second polarizing portion 122 are respectively integrally injection molded with the dual-polarizing light guide plate 12; or, the first polarizing portion 121 and the second polarizing portion 122 are engraved on the backlight surface of the dual-polarizing light guide plate 12.

[0037] As an optional solution, the first polarizer 121 and the second polarizer 122 can be combined with the dual-polarizer light guide plate 12 by integral injection molding to ensure the stability and consistency of the structure. Alternatively, these polarizers can be formed on the backlight surface of the light guide plate by engraving, which provides flexibility and can adjust the shape and size of the polarizer according to specific needs to optimize the light control effect.

[0038] In this embodiment, it is further explained that a photosensitive element is provided on the lower end surface of the lamp head assembly 10, and the photosensitive element is used to detect light intensity distribution information; an annular airbag is provided between the dual polarized light guide plate 12 and the diffuser plate 13, and the annular airbag matches the edge of the frame 11. The annular airbag is connected to a micro air pump, and the micro air pump is used to supply air to the annular airbag to change the gap thickness between the dual polarized light guide plate 12 and the diffuser plate 13. Among them, the photosensitive element can be a CMOS image sensor, which is low in cost and can sense the light intensity plane information of the effective range, and is the preferred component for the light intensity distribution information of this solution.

[0039] It should be noted that the lower end surface of the lamp head assembly 10 is equipped with a photosensitive element for detecting the light intensity distribution information on the desktop to ensure the accuracy and uniformity of the lighting. In addition, an annular air bag is provided between the dual-polarized light guide plate 12 and the diffuser plate 13. The air supply is provided by a micro air pump, and the thickness of the gap between the two can be flexibly adjusted. This design allows the emission angle of the light to be controlled, thereby optimizing the position of the light intensity center to adapt to different usage scenarios and needs.

[0040] In this embodiment, the dual-polarized LED lighting device also includes a lamp pole 20 and a base 30. The lamp head assembly 10 is arranged at the first end of the lamp pole 20, and the base 30 is arranged at the second end of the lamp pole 20. The base 30 is used to support the lamp pole 20 and the lamp head assembly 10. A control unit is arranged inside the lamp pole 20, and the control unit is electrically connected to the long side light source board 16 and the short side light source board 17 to ensure the effective transmission of power and signals to realize lighting control.

[0041] In the present embodiment, it is further described that the lamp pole 20 includes a first rod body 21, and a second rod body 22 slidably mounted on the upper end of the first rod body 21; an adjustment button 23 is provided at the lower end of the second rod body 22, a locking piece is provided at one end of the adjustment button 23, and an elastic reset piece is provided between the adjustment button 23 and the locking piece; the first rod body 21 is provided with a plurality of height adjustment gears along its length direction, and the adjustment button 23 is pressed to connect the locking piece to any height adjustment gear.

[0042] It should be noted that the lower end of the second rod body 22 is equipped with an adjustment button 23, one end of the button is connected to the locking member, and a stable return function is achieved through an elastic reset member. The first rod body 21 is provided with multiple height adjustment gears, and the user can press the adjustment button 23 to fix the locking member at the desired height gear, thereby achieving flexible adjustment of the height of the lamp pole 20.

[0043] In this embodiment, it is further explained that a sensor is provided on the first end surface of the adjustment button 23, and the sensor is used to sense the height of the height adjustment gear connected to the locking member; a prompt light is provided on the second end surface of the adjustment button 23, and the prompt light is connected to the control unit. When the user adjusts the lamp pole 20 to the optimal height, the prompt light will send a signal to help the user intuitively understand the current adjustment state and improve the convenience of use.

[0044] Embodiment 2: The present invention further provides an installation method of a dual-polarized LED lighting device, which is applied to installing the dual-polarized LED lighting device as in the first embodiment. The dual-polarized LED lighting device further includes a lamp pole 20 and a base 30 .

[0045] The installation methods include: S1, the base 30 of the dual polarized LED lighting device is installed at a corner of the desktop, and the lamp head assembly 10 is started at the same time to emit light to illuminate the desktop.

[0046] S2, obtaining light intensity distribution information of the desktop according to the photosensitive element on the lower end surface of the lamp head assembly 10, and the control unit preliminarily selects the best height adjustment gear; The light intensity distribution information of each area on the desktop is obtained in real time by using the photosensitive element on the lower end surface of the lamp head assembly 10. This information is transmitted to the control unit for preliminary analysis and selection of the best height adjustment gear to optimize the lighting effect.

[0047] S3, adjusting the height position of the lamp pole 20 to the optimal height adjustment position according to the indication of the warning light on the lamp pole 20; wherein, when the locking member of the lamp pole 20 is adjusted to the corresponding height adjustment position, the warning light on the lamp pole 20 is displayed in green; According to the initial selection of the control unit, the user manually adjusts the lamp pole 20 to the optimal height position through the indication of the indicator light on the lamp pole 20. When the locking member reaches the appropriate position, the indicator light turns green, indicating that the user has reached the ideal height setting. At the same time, when the locking member is not locked in place, it can also serve as a reminder to avoid the situation where the height support of the lamp pole 20 is unstable.

[0048] S4, the control unit calculates the optimal air gap height between the dual polarized light guide plate 12 and the diffuser plate 13 according to the light intensity distribution information; The control unit accurately calculates the optimal air gap height between the dual polarized light guide plate 12 and the diffuser plate 13 based on the acquired light intensity distribution information. This step ensures that the light emission angle can be optimally adjusted, thereby improving the overall distribution of the light.

[0049] S5, adjusting the air pressure of the annular airbag between the dual-polarized light guide plate 12 and the diffuser plate 13 through the optimal air gap height, optimizing the center position of the light intensity, making the center of the light intensity fall on the center of the desktop, and completing the installation.

[0050] The working principle of the present invention is as follows: the installation method first fixes the base 30 of the dual-polarized LED lighting device to a corner of the desktop, and starts the lamp head assembly 10 to illuminate the desktop; the photosensitive element detects the light intensity distribution information of the desktop, transmits it to the control unit, and preliminarily selects the best height adjustment gear; the user manually adjusts the lamp pole 20 to the best height position according to the indication of the indicator light on the lamp pole 20. When the locking member reaches the appropriate gear position, the indicator light turns green; then, the control unit calculates the best air gap height between the dual-polarized light guide plate 12 and the diffuser plate 13 according to the light intensity distribution information, and optimizes the position of the light intensity center by adjusting the air pressure of the annular airbag so that it falls on the central area of ​​the desktop.

[0051] This installation method achieves precise control of the light intensity center by combining manual and automatic adjustment, ensuring uniformity and comfort of lighting. With the help of photosensitive elements and prompt lights, users can easily adjust the height of the lamp pole 20, and the fine adjustment of the annular airbag further optimizes the light distribution. This method not only improves the intelligence of the device and user experience, but also adapts to different desktop environments and provides a flexible and efficient lighting solution.

[0052] In this embodiment, it is further explained that step S2 specifically includes: S21, transmitting the acquired light intensity distribution information to the control unit, the control unit divides the desktop into a plurality of sub-areas, and analyzes the light intensity data of each sub-area.

[0053] S22, judging the position deviation of the light intensity center according to the light intensity data of each sub-region; judging the position deviation of the light intensity center according to the light intensity data of each sub-region. This step helps to identify the deviation between the current light intensity center and the ideal position, providing a basis for subsequent adjustments.

[0054] S23, combining the preset light intensity distribution standard, preliminarily calculating the optimal height adjustment position for adjusting the height of the lamp pole 20 so that the light intensity center is close to the center of the desktop; Combined with the preset light intensity distribution standard, the control unit preliminarily calculates the optimal adjustment position for adjusting the height of the lamp pole 20 so as to make the light intensity center closer to the center of the desktop. This calculation ensures the uniformity and effectiveness of the light.

[0055] S24 , transmitting the initially calculated optimal height adjustment gear information to the warning light on the lamp pole 20 .

[0056] The optimal height adjustment gear information calculated initially is transmitted to the prompt light on the lamp pole 20. The indication of the prompt light helps the user to make manual adjustments to ensure that the height setting of the lamp pole 20 meets the optimal lighting effect.

[0057] In this embodiment, it is further explained that step S4 specifically includes: S41, determining the position and offset degree of the current light intensity center according to the light intensity distribution information; wherein the preset light intensity distribution model calculates the center of gravity of the entire desktop light intensity distribution, i.e., the light intensity center, based on the light intensity points at multiple positions and taking the light intensity value of each light intensity point as the quality value; First, the position of the current light intensity center and its degree of deviation are determined based on the light intensity distribution information. Using the light intensity distribution model, the light intensity values ​​at multiple locations are regarded as mass values, and the center of gravity of the light intensity distribution of the entire desktop, i.e., the light intensity center, is calculated. This step provides basic data for subsequent adjustments.

[0058] S42, using a preset light intensity distribution model, evaluates the effects of different air gap heights on the light refraction angle and the center position of the light intensity.

[0059] S43, combining the offset direction and degree of the light intensity center, calculates the optimal air gap height for adjustment to optimize the specific value of the light intensity center position; this calculation ensures that the light can be more evenly distributed on the desktop by optimizing the specific value of the light intensity center position.

[0060] S44, outputs the calculated optimal air gap height to drive the air pressure adjustment of the annular airbag to achieve optimization of the light intensity center.

[0061] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dual polarized LED lighting device, It is characterized in that The lamp head assembly (10) comprises a frame (11), a dual-polarized light guide plate (12), a diffusion plate (13), a transparent protective cover (14), a cover plate (15), a long-side light source plate (16) and a short-side light source plate (17); wherein the long-side light source plate (16) and the short-side light source plate (17) are respectively arranged on a long side and a short side adjacent to the frame (11); The transparent protective cover (14) covers the bottom of the lamp head assembly (10), the diffuser plate (13) and the dual-polarized light guide plate (12) are sequentially mounted on the transparent protective cover (14), and the cover plate (15) is mounted on the top of the frame (11) to close the lamp head assembly (10); The backlight surface of the dual-polarizing light guide plate (12) is provided with alternately distributed first polarizing portions (121) and second polarizing portions (122), the first polarizing portions (121) comprising a plurality of conical dot holes distributed in an array, the second polarizing portions (122) being a raised portion, and the first polarizing portions (121) and the second polarizing portions (122) together forming a diffuse reflection layer for refraction and reflection of light.

2. The dual polarized LED lighting device according to claim 1, It is characterized in that The protrusion is any one of a strip-shaped triangular column, a strip-shaped conical column or a strip-shaped conical column; Wherein, the raised portion is arranged parallel to the long side light source plate (16), and the raised portion is used to refract and reflect the light of the long side light source plate (16).

3. The dual polarized LED lighting device according to claim 1, It is characterized in that The first polarizing portion (121) and the second polarizing portion (122) are respectively integrally injection-molded with the dual-polarizing light guide plate (12); Alternatively, the first polarizing portion (121) and the second polarizing portion (122) are formed on the backlight surface of the dual-polarizing light guide plate (12) by engraving.

4. The dual polarized LED lighting device according to claim 1, It is characterized in that A photosensitive element is provided on the lower end surface of the lamp head assembly (10), and the photosensitive element is used to detect light intensity distribution information; An annular airbag is provided between the dual-polarized light guide plate (12) and the diffuser plate (13), the annular airbag matches the edge of the frame (11), and the annular airbag is connected to a micro air pump, the micro air pump is used to supply air to the annular airbag, so as to change the gap thickness between the dual-polarized light guide plate (12) and the diffuser plate (13).

5. The dual polarized LED lighting device according to claim 1, It is characterized in that It also comprises a lamp pole (20) and a base (30), wherein the lamp head assembly (10) is arranged at a first end of the lamp pole (20), and the base (30) is arranged at a second end of the lamp pole (20), and the base (30) is used to support the lamp pole (20) and the lamp head assembly (10); A control unit is provided inside the lamp pole (20), and the control unit is electrically connected to the long side light source board (16) and the short side light source board (17).

6. The dual polarized LED lighting device according to claim 5, It is characterized in that The lamp pole (20) comprises a first rod body (21), and a second rod body (22) slidably sleeved on the upper end of the first rod body (21); An adjusting button (23) is provided at the lower end of the second rod body (22), a locking piece is provided at one end of the adjusting button (23), and an elastic reset piece is provided between the adjusting button (23) and the locking piece; The first rod body (21) is provided with a plurality of height adjustment gears along its length direction, and the adjustment button (23) is pressed to connect the locking member to any of the height adjustment gears.

7. The dual polarized LED lighting device according to claim 6, It is characterized in that A sensor is provided on the first end surface of the adjustment button (23), and the sensor is used to sense the height of the height adjustment gear connected to the locking member; A warning light is provided on the second end surface of the adjustment button (23), and the warning light is connected to the control unit.

8. A method for installing a dual polarized LED lighting device, It is characterized in that Used for installing the dual-polarized LED lighting device according to any one of claims 1 to 7, the dual-polarized LED lighting device further comprising a lamp pole (20) and a base (30); The installation method comprises: The base (30) of the dual-polarized LED lighting device is installed on a corner of a tabletop, and the lamp head assembly (10) is started at the same time to emit light to illuminate the tabletop; The control unit preliminarily selects the best height adjustment position by acquiring light intensity distribution information of the desktop according to the photosensitive element on the lower end surface of the lamp head assembly (10); The height position of the lamp pole (20) is adjusted to an optimal height adjustment position by means of an indication light on the lamp pole (20); wherein when the locking member of the lamp pole (20) is adjusted to a corresponding height adjustment position, the indication light on the lamp pole (20) is displayed in green; The control unit calculates the optimal air gap height between the dual polarized light guide plate (12) and the diffuser plate (13) according to the light intensity distribution information; The air pressure of the annular air bag between the dual polarized light guide plate (12) and the diffuser plate (13) is adjusted by adjusting the air gap height to optimize the center position of the light intensity so that the center of the light intensity falls on the center of the desktop, thereby completing the installation.

9. The method for installing a dual-polarized LED lighting device according to claim 8, It is characterized in that The control unit preliminarily selects the best height adjustment gear position by obtaining light intensity distribution information of the desktop based on the photosensitive element on the lower end surface of the lamp head assembly (10), specifically comprising: The acquired light intensity distribution information is transmitted to the control unit, and the control unit divides the desktop into a plurality of sub-areas and analyzes the light intensity data of each sub-area; According to the light intensity data of each sub-area, the position deviation degree of the light intensity center is determined; Combined with the preset light intensity distribution standard, preliminarily calculating the optimal height adjustment position for adjusting the height of the lamp pole (20) so that the light intensity center is close to the center of the desktop; The information of the optimal height adjustment gear position calculated initially is transmitted to the warning light on the light pole (20).

10. The method for installing a dual-polarized LED lighting device according to claim 8, It is characterized in that The control unit calculates the optimal air gap height between the dual polarized light guide plate (12) and the diffuser plate (13) based on the light intensity distribution information, specifically comprising: According to the light intensity distribution information, the position and offset degree of the current light intensity center are determined; wherein the preset light intensity distribution model uses the light intensity value of each light intensity point as the quality value based on the light intensity points at multiple positions to calculate the center of gravity of the entire desktop light intensity distribution, i.e., the light intensity center; The preset light intensity distribution model is used to evaluate the influence of different air gap heights on the light refraction angle and the center position of light intensity. The optimal air gap height for adjustment is calculated in combination with the offset direction and degree of the light intensity center; the calculated optimal air gap height is output to drive the air pressure adjustment of the annular airbag to achieve the optimization of the light intensity center.

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