Full-spectrum floor lamp

Abstract

The full-spectrum floor lamp comprises a base, a lamp pole and a lamp holder, and the bottom end of the lamp pole is connected to the base; the lamp holder is connected to the top end of the lamp pole, an LED module is arranged in the lamp holder and comprises a plurality of light-emitting units, each light-emitting unit comprises a plurality of red light lamp beads and a plurality of white light lamp beads, the white light lamp beads are arranged between every two adjacent red light lamp beads, and the white light lamp beads are arranged between every two adjacent white light lamp beads. The red light lamp beads comprise the first red light lamp bead, the second red light lamp bead and the third red light lamp bead, the wavelength of the first red light lamp bead is smaller than that of the second red light lamp bead, and the wavelength of the second red light lamp bead is smaller than that of the third red light lamp bead. Through collaborative design of the white light lamp beads and the red light lamp beads, spectrum deficiency can be supplemented in a targeted mode, and the full-spectrum effect closer to natural light is achieved. And compared with a pure white light lamp bead scheme, the proportion of blue light can be reduced, so that the short-wave blue light peak value is reduced, and the damage of the blue light to eyes is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of lighting, in particular to a full-spectrum floor lamp. Background Art

[0002] A full spectrum refers to a spectrum that includes ultraviolet, visible, and infrared light. Within the visible portion, the ratio of red, green, and blue is similar to sunlight, resulting in a color rendering index close to 100. Traditional LED light sources rely on blue light for excitation, which has a much higher concentration than the solar spectrum. This light can penetrate the human eye and reach the macula, causing macular degeneration and irreversible damage. Therefore, a new full-spectrum floor lamp is needed that reduces the peak shortwave blue light exposure, minimizing the harmful effects of blue light on the eyes. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a full-spectrum floor lamp that can reduce the peak value of short-wave blue light and reduce the damage of blue light to the eyes.

[0004] A full-spectrum floor lamp according to a first embodiment of the present invention comprises: base; a lamp post, the bottom end of which is connected to the base; A lamp holder is connected to the top of the lamp pole, and an LED module is provided in the lamp holder. The LED module includes a plurality of light-emitting units, and the light-emitting units include a plurality of red light beads and a plurality of white light beads. The white light beads are arranged between two adjacent red light beads. The red light beads are divided into a first red light bead, a second red light bead, and a third red light bead. The wavelength of the first red light bead is smaller than the wavelength of the second red light bead, and the wavelength of the second red light bead is smaller than the wavelength of the third red light bead.

[0005] The full-spectrum floor lamp according to the present invention has at least the following beneficial effects: Through the coordinated design of white and red light beads, it can specifically supplement spectrum deficiencies, achieving a full-spectrum effect closer to natural light. Furthermore, compared to solutions using pure white light beads, it can reduce the proportion of blue light, thereby lowering the peak value of shortwave blue light and reducing the damage to the eyes caused by blue light.

[0006] According to some embodiments of the present invention, the ratio of the number of the white light lamp beads to the number of the red light lamp beads ranges from 1 to 2.

[0007] According to some embodiments of the present invention, the distance between the same white light lamp bead and the adjacent red light lamp bead is smaller than the distance between the same white light lamp bead and another adjacent white light lamp bead.

[0008] According to some embodiments of the present invention, the LED module is provided with a lens, and the lens is provided on the outside of each lamp bead. The lens is hemispherical, and the lens is provided with a recess on the outer surface facing the lamp bead. The cross-section of the recess is circular, and the cross-sectional diameter of the recess gradually increases in the direction away from the lamp bead.

[0009] According to some embodiments of the present invention, along the first direction, the arrangement order of the red light lamp beads is the first red light lamp bead, the second red light lamp bead, the third red light lamp bead, the third red light lamp bead, the first red light lamp bead, the second red light lamp bead, the third red light lamp bead, the third red light lamp bead, the second red light lamp bead and the third red light lamp bead.

[0010] According to some embodiments of the present invention, except for one white light lamp bead being set on each side of the last red light lamp bead in the first direction, and one white light lamp bead being set on the side of the second to last red light lamp bead in the first direction close to the last red light lamp bead, two white light lamp beads are set on each side of the remaining red light lamp beads.

[0011] According to some embodiments of the present invention, the wavelength range of the first red light bead is 680nm to 710nm, the wavelength range of the second red light bead is 715nm to 740nm, and the wavelength range of the third red light bead is 745nm to 760nm.

[0012] According to some embodiments of the present invention, the wavelength of each of the red light beads is configured to be adjustable.

[0013] According to some embodiments of the present invention, the full-spectrum floor lamp includes a detection device and a control device, the LED module includes an upper module and a lower module, the upper module emits light upward, and the lower module emits light downward, the detection device is used to detect the illumination spectrum of the illumination area of ​​the lower module, and the control device is connected to the red light lamp beads. If the error between the illumination spectrum and the spectrum of sunlight is greater than a preset value, the control device controls the red light lamp beads of the upper module and / or the lower module to change the wavelength according to the illumination spectrum so that the illumination spectrum matches the spectrum of sunlight.

[0014] According to some embodiments of the present invention, if the error between the illumination spectrum and the spectrum of sunlight is greater than a preset value, the control device controls the red light beads of the upper module and / or the lower module to change the wavelength according to the illumination spectrum, including: The curve of the illumination spectrum is segmented by wavelength to obtain the frequency band wavelength range corresponding to each of the red light lamp beads, and the wavelength of the corresponding red light lamp bead is adjusted according to the position of the band where the error is greater than the preset value.

[0015] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which: Figure 1 is a schematic diagram of a full-spectrum floor lamp according to an embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of an LED module is shown; Figure 3 is a partial cross-sectional view of an LED module; Figure 4 This is a spectrum diagram of a full-spectrum floor lamp according to an embodiment of the present invention; Figure 5 This is a spectrum diagram of a full-spectrum floor lamp according to another embodiment of the present invention; Figure 6 This is a spectrum diagram of a full-spectrum floor lamp according to another embodiment of the present invention.

[0017] Reference numerals: 110. Base; 120. Lamp pole; 130. Lamp holder; 131. White light lamp beads; 132. Lens; 133. Recess; 140. Operation panel; 150. Power plug; 160. Upper module; 170. Lower module. DETAILED DESCRIPTION

[0018] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0019] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0020] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0021] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0022] Reference Figure 1 The full-spectrum floor lamp features a modular design, with its core consisting of three main components: a base 110, a pole 120, and a lamp head 130. These components work together through mechanical connections (such as threads and clips) and integrated circuits (such as the driver and intelligent module). The base 110 serves as a supporting structure and integrates the power supply and control modules. The pole 120, a height-limited structure, connects the base 110 and the lamp head 130 and transmits power. The lamp head 130, housing the full-spectrum LED module and optical components, is the core component that realizes the lighting function. These components are mechanically connected and electrically connected to form a complete system, combining practicality with aesthetic design.

[0023] Base 110 utilizes a square metal chassis (such as aluminum alloy or cast iron) with multiple non-slip rubber pads (e.g., 2-3 mm thick with a textured surface for enhanced friction) on the bottom. The rear side of the chassis is vertically fixed to lamp pole 120 (via metal screws or welding). This combination of metal chassis and non-slip rubber pads ensures that the floor lamp will not tip over when moved (e.g., repositioned) or subjected to external impact.

[0024] The lamp post 120 is connected to the base 110 at its bottom and to the lamp head 130 at its top, connecting and supporting the lamp head 130 and securing it at the appropriate position and height to ensure proper function and lighting. The lamp post 120 consists of two connected parts, upper and lower. In some embodiments, the upper and lower parts are connected by a telescopic sliding mechanism, allowing for adjustment of the overall height of the lamp post 120. Cables are routed internally within the lamp post 120. A power plug 150 is located at the bottom of the lamp post 120, and an operating panel 140 is located on the top.

[0025] The lamp head 130 has a rectangular shell (made of aluminum alloy or thermally conductive plastic), which integrates an LED module, a heat dissipation component (heat dissipation fins or a micro fan) and secondary optical elements (such as a PC diffuser, a PMMA lens or a reflective cup). The lamp head 130 emits full-spectrum light, which covers the visible light band of 380-780nm. The spectrum ratio is close to that of natural light at noon (CIED65 standard), and the color rendering index Ra≥95. It can truly restore the color of objects (such as the text in books, paintings, and the colors of fruits and vegetables) and reduce visual fatigue.

[0026] The LED module includes several light-emitting units, Figure 2 The light emitting unit includes a plurality of red light beads and a plurality of white light beads 131 ( Figure 2 The lamp bead located on the center line is a red light bead, and the rest are white light bead 131). A white light bead 131 is arranged between two adjacent red light beads. The mixed light scheme of the white light bead 131 and the red light bead, through the spectral complementary characteristics of the two lamp beads, achieves full spectrum (referring to a lighting scheme in which the spectrum covers the visible light band (380-780nm) and the energy distribution is close to that of natural light, usually requiring a color rendering index Ra ≥ 90 and good spectral continuity) coverage while targetedly reducing the hazards of short-wave blue light (mainly referring to high-energy short-wave blue light (HEV blue light) with a wavelength of 400-480nm. Excessive exposure may cause retinal cell damage, visual fatigue and circadian rhythm disorders). Its principle can be analyzed from the following two aspects: The white light lamp bead 131 uses a 450-460nm blue light chip as the base, which excites yellow phosphor to produce white light. The spectrum shows: the main peak of blue light is prominent (near 450nm), the energy of the red light segment (600-700nm) is weaker, the spectrum gap is insufficient red light component and the spectrum is cold.

[0027] Red light beads usually use AlGaInP (aluminum gallium indium phosphide) based chips, which directly emit 620-750nm red light. The spectral characteristics are: the spectral peak is concentrated above 630nm, and the energy of other bands (blue light, green light) is extremely low (lacking short and medium wave components such as blue light and green light).

[0028] White light provides the basic spectral framework: blue light (450nm), green light (indirectly generated by phosphors), and some red light form the basis of the spectrum, but red light lacks energy. Red light supplements the missing long-wavelength gaps: The red light emitted by red light beads fills the gaps in the long-wavelength range of the white light spectrum, accurately supplementing the long-wavelength red light region missing from white light beads 131, making the energy distribution of the spectrum from short-wavelength (blue light) to long-wavelength (red light) more balanced, approaching the continuous spectrum of natural light. The blue light spectrum of traditional LEDs has sharp peaks (such as the peak height at 450nm), which can easily lead to local high energy density; in the mixed light solution, red light lamp beads are inserted into multiple white light lamp beads 131. After the wide phosphor spectrum (500-650nm) of the white light lamp beads 131 and the smooth red light spectrum (620-750nm) of the red light lamp beads are superimposed, the peak of the blue light band (400-495nm) is "widened", forming a flatter spectral curve, reducing the concentrated stimulation of short-wave blue light, and further reducing the risk of visual fatigue and retinal damage.

[0029] For example, when blue light accounts for approximately 20%-30% of the total energy in white light, adding red light beads reduces the relative proportion of blue light to below 15%. The main peak of blue light in white light is sharp (with a narrow half-width at half maximum). After mixing with red light, the overall spectral energy distribution becomes smoother, and the peak intensity of blue light is reduced, meeting the RG0 (non-hazardous) requirements of the IEC62471 photobiological safety standard.

[0030] Red light supplementation increases the long-wavelength component of the spectrum, enhancing the rendering of red objects (such as blood and flowers), raising the Ra value from Ra≈80 for white light to Ra≥90. By adjusting the ratio of white light to red light, the color temperature can be adjusted from cool white light (6500K) to warm light (2700K), covering more scene requirements.

[0031] The red light beads are divided into the first red light bead, the second red light bead and the third red light bead. The wavelength of the first red light bead is smaller than that of the second red light bead, and the wavelength of the second red light bead is smaller than that of the third red light bead. Figure 2 The first red light lamp includes R1 and R5, the second red light lamp includes R2, R6 and R9, and the third red light lamp includes R3, R4, R7, R8 and R10.

[0032] If single-wavelength red LEDs are arranged in a concentrated pattern, the red light can be overly intense in some areas, creating "red spots" or glare, which can easily lead to visual fatigue from prolonged viewing. Placing white LEDs 131 (emitting medium- and short-wavelength light, such as blue and yellow) between adjacent red LEDs dilutes the concentrated red light with the medium- and short-wavelength components of the white light, creating a gradual transition from cool white to warm white to orange-red, more similar to the soft texture of natural light.

[0033] When three levels of red light are alternately arranged with white light, the spectral superposition of red light of different wavelengths reduces optical interference fringes. This, combined with lens 132, improves light spot uniformity and avoids the "red and blue spot separation" phenomenon. The three levels of red light form a continuous red light spectrum band, avoiding the "spectral discontinuity" caused by single-wavelength red light, reducing abrupt peaks in the light, and improving visual comfort.

[0034] Combining red light beads with different wavelengths can cover a wider range of red light bands. For example, the first red light bead has a shorter wavelength (such as 620-640nm), the second red light bead has a medium wavelength (such as 640-660nm), and the third red light bead has a longer wavelength (such as 660-700nm). Together, they can more fully fill the red light spectrum, making the entire LED module's spectrum more continuous and complete, closer to the full spectrum characteristics of natural light.

[0035] A rich combination of red light wavelengths helps more accurately restore the true color of objects. Different red objects have different reflection and absorption characteristics for red light within different wavelength ranges. Multi-wavelength red light beads can better match these characteristics, making the colors of red objects more vivid and realistic, and improving the color expression in the lighting environment. This is especially effective for scenes with high color requirements such as art exhibits and food displays.

[0036] Reference Figure 2 , the distance between the same white light lamp bead 131 and the adjacent red light lamp bead is smaller than the distance to another adjacent white light lamp bead 131. The same white light lamp bead 131 and the adjacent red light lamp bead are closer, making the light intensity distribution in the area more concentrated and uniform. Since white light and red light complement each other at a close distance, the uneven light intensity caused by excessive distance is avoided. In contrast, the white light lamp bead 131 and another adjacent white light lamp bead 131 are farther apart, which helps to disperse white light over a wider area and balance the light intensity distribution of the overall lighting. Through this layout, high-brightness lighting can be achieved locally while ensuring the uniformity of the overall lighting. At a close distance, the spectra of the white light lamp bead 131 and the red light lamp bead can be better mixed. The spectrum of the white light lamp bead 131 contains multiple wavelength components, which complement the spectrum of the red light lamp bead, making the mixed spectrum more continuous and uniform. Maintaining a large distance between the white light beads 131 prevents excessive overlap of blue light peaks, reducing localized blue light intensity. Red light fills the gaps, improving overall light softness. White light beads 131 (with a high proportion of blue light) generate higher heat, while red light beads generate less. By increasing the spacing between the white light beads 131 and reducing the concentration of heat sources, combined with the heat dissipation provided by the red light beads, the overall junction temperature is lowered, extending LED life.

[0037] It is understood that in some embodiments, the ratio of white light beads 131 to red light beads ranges from 1 to 2, i.e., the number of white light beads ≥ the number of red light beads, and does not exceed 2. The core function of the white light beads 131 is to cover blue light (400-495nm), green light (495-570nm), yellow light (570-580nm), and some orange light (580-620nm), while the red light beads are responsible for supplementing long-wave red light (620-750nm). An unbalanced ratio (e.g., too few white light beads or too many red light beads) will result in a noticeable gap in the spectrum.

[0038] When the ratio of white light lamp beads 131 to red light lamp beads is greater than 2:1: there are too many white light lamp beads 131, the output of blue light (400-450nm) may exceed the standard (the blue light hazard level increases), and the red light (620-750nm) is overly diluted, and the spectrum has a "fault" in the band above 620nm. Red objects (such as apples) do not reflect enough red light, resulting in dark color or purple-brown color.

[0039] When the ratio of white light beads 131 to red light beads is less than 1:1: the number of white light beads 131 is insufficient, the coverage of short and medium wave light such as blue light and green light is weakened, and a "dark area" may appear in the 400-580nm band of the spectrum, resulting in color distortion of objects such as blue (such as the sky) and green (such as plants); at the same time, too many red light beads will lead to the concentration of red light energy, resulting in "red light overflow", and the overall light color will be warmer or even orange, deviating from the texture of natural light.

[0040] Reference Figure 4 In this embodiment, the full-spectrum floor lamp has twice as many white light beads 131 as red light beads (32 white light beads 131, 3 first red light beads, 5 second red light beads, and 8 third red light beads). The darker curve in the figure represents the reference spectrum (the spectrum of sunlight), while the lighter curve represents the emission spectrum of the full-spectrum floor lamp. As can be seen from the spectrum graph, while the mixing of white and red light suppresses the peak intensity of the full-spectrum floor lamp's blue light, reducing its potential for eye damage, the spectrum exhibits a "break" in the 680-750nm wavelength range, with the peak red light of the full-spectrum floor lamp significantly lower than that of sunlight.

[0041] Reference Figure 5In this embodiment, the full-spectrum floor lamp has an equal number of white and red light beads 131 (16 white light beads 131, 4 first red light beads, 5 second red light beads, and 7 third red light beads). The darker curve in the figure represents the reference spectrum (the spectrum of sunlight), while the lighter curve represents the emission spectrum of the full-spectrum floor lamp. As can be seen from the spectrum graph, by reducing the number of white light beads 131 and increasing the proportion of red light beads, the spectrum in the 680-750nm wavelength band approaches the peak of sunlight's red light, effectively bringing the emission spectrum of the full-spectrum floor lamp closer to the full spectrum. However, there is a sharp peak in the 680-750nm wavelength band.

[0042] To solve the above problems, the light emitting unit adopts Figure 2 The scheme shown refines the specific distribution and proportion of red light beads.

[0043] Along the first direction (the direction of wavelength from short to long), the arrangement order of the red light lamp beads is the first red light lamp bead, the second red light lamp bead, the third red light lamp bead, the third red light lamp bead, the first red light lamp bead, the second red light lamp bead, the third red light lamp bead, the third red light lamp bead, the second red light lamp bead and the third red light lamp bead.

[0044] From the 430-680nm band, it is basically composed of the first red light lamp bead, the second red light lamp bead, and the third red light lamp bead. Among them, a third red light lamp bead is set between the two groups of "first red light lamp bead, second red light lamp bead, and third red light lamp bead". In this section, the main function of the red light lamp bead is to reduce the proportion of blue light, and with reference to the spectrum of sunlight, the wavelength of this band is gradually increasing. Therefore, according to the arrangement of the first red light lamp bead, the second red light lamp bead, and the third red light lamp bead, it can fit the curve changes, and the third red light lamp bead set between the two groups of "first red light lamp bead, second red light lamp bead, and third red light lamp bead" is near the maximum peak of blue light at 495nm, which can "widen" the peak of the blue light band at 495nm, forming a flatter spectral curve and reducing the concentrated stimulation of short-wave blue light.

[0045] From 680-750nm, the third red light bead, second red light bead, and third red light bead are arranged in this order. In this band, the main function of the red light bead is to supplement the long-wave red light, so the red light bead with a longer wavelength is used. The second red light bead is placed between the two third red light beads to reduce sharp peaks, making the difference between peaks and troughs smaller, forming a smoother spectral curve.

[0046] Among them, two white light beads 131 are set on both sides of R1 to R8, so that in the light-emitting units at positions R1 to R7, the number of white light beads 131 is twice the number of red light beads. The spectrum formed by this band is referenced Figure 4 , which can reduce the harm of blue light and fit the spectrum of sunlight, and can also reduce the number of red light beads, reduce costs, and avoid the appearance of "dark areas". A second red light bead is set on the side of R9 close to R10, a second red light bead is set on the side of R10, and a third red light bead is set on the other side. The ratio of the number of white light beads 131 to the number of red light beads is 1:1. The spectrum formed by this band is referenced Figure 5 , making the spectrum closer to the peak of the red light of sunlight in the wavelength band of 680-750nm, that is, making the emission spectrum of the full-spectrum floor lamp closer to the full spectrum, avoiding the "fault" of the spectrum in the wavelength band of 680-750nm.

[0047] Traditional monochromatic red light (e.g., 660nm) only covers the visible red region, missing spectrum above 700nm. When mixed with white light (380-780nm), the energy at the long-wavelength end (700-780nm) drops dramatically. In this embodiment, the first red light bead has a wavelength range of 680nm to 710nm, the second red light bead has a wavelength range of 715nm to 740nm, and the third red light bead has a wavelength range of 745nm to 760nm. These are primarily designed to compensate for the insufficient energy of white light bead 131 in the red wavelength range (600-700nm). Furthermore, short-wavelength red light (620-680nm) requires higher brightness to achieve the same light color, which can easily lead to visual fatigue caused by "redundant light intensity." Long-wavelength red light (680-760nm) requires less power for the same brightness and offers a softer color, avoiding glare. Furthermore, long-wavelength red LEDs dissipate less heat than traditional red LEDs (e.g., 760nm chips dissipate 0.2W / chip, while 660nm chips dissipate 0.3W / chip). When combined with white light, this reduces the overall heat density of the module, thereby decreasing the light decay rate. This also allows for a thinner and lighter heat dissipation structure, reducing the thickness of the lamp head 130 and making it suitable for ultra-thin lamp designs. Furthermore, the orange light (580-620nm) of the white light bead 131 partially overlaps with the red light (620-650nm), resulting in a superposition of light intensity in this area, potentially creating an "orange-red spot" and causing excessive brightness in certain areas (e.g., glare on a desk surface when reading).

[0048] Reference Figure 6 In this embodiment, the wavelength range of the first red light bead is 680nm to 710nm, the wavelength range of the second red light bead is 715nm to 740nm, the wavelength range of the third red light bead is 745nm to 760nm, and the arrangement of the lamp beads is as follows: Figure 2The scheme shown. The number of white light beads 131 of the full-spectrum floor lamp is twice the number of red light beads (the number of white light beads 131 is 20, the number of first red light beads is 2, the number of second red light beads is 3, and the number of third red light beads is 5). The darker curve in the figure is the reference spectrum (the spectrum of sunlight), and the lighter curve is the emission spectrum of the full-spectrum floor lamp. Referring to the spectrum graph, it can be seen that in the short-wave band (430-680nm), the mixing effect of white light and red light suppresses the peak intensity of blue light of the full-spectrum floor lamp, reducing the damage of blue light to the eyes. In addition, compared to Figure 5 In the long-wave band (680-760nm), the emission spectrum of the full-spectrum floor lamp is closer to the full spectrum, and the peak is "broadened" to form a flatter spectral curve.

[0049] Reference Figure 3 The LED module includes a lens 132, located on the outside of each lamp bead. Lens 132 is hemispherical and features a recess 133 on the outer surface of lens 132 facing the lamp bead. Recess 133 has a circular cross-section, and its diameter gradually increases as it moves away from the lamp bead. Alternatively, the longitudinal cross-section of lens 132 forms an "M"-shaped boundary line on the side away from the lamp bead, resulting in a concave valley in the middle of lens 132 and a circular peak surrounding recess 133. Compared to solutions with convex lenses 132, the light emitted by the lamp bead in this embodiment is biased toward the peak, resulting in more dispersed and uniform light, facilitating light mixing and reducing the risk of glare. Compared to solutions with concave lenses 132, the light emitted by the lamp bead in this embodiment is biased toward the peak while remaining relatively concentrated, resulting in better light output (light emitted from concave lenses 132 is too dispersed to the periphery, resulting in lower brightness).

[0050] It will be appreciated that in some embodiments, the wavelength of each red light bead is configured to be adjustable (e.g., by adjusting the chip voltage or current through a driver power supply). This adjustable wavelength allows the entire LED module to flexibly adjust its spectral output. When the wavelength of the red light bead is higher than that of sunlight, the wavelength is adjusted downward; when the wavelength of the red light bead is lower than that of sunlight, the wavelength is adjusted upward. By precisely controlling the wavelength of each red light bead, smooth spectral adjustment can be achieved within the red light region, better matching the full spectrum characteristics of natural light.

[0051] Reference Figure 1The LED module consists of an upper module 160 and a lower module 170. Upper module 160 emits light upward, primarily through diffuse reflection, providing basic ambient lighting and improving overall brightness uniformity in the space through wide spectrum coverage. Lower module 170 emits light downward, primarily through direct illumination, illuminating a target area. For example, in indoor lighting, upper module 160 can illuminate the ceiling and upper areas of the room, while lower module 170 can illuminate the floor and furniture surfaces, creating a uniform all-around lighting effect.

[0052] However, when other ambient lights are turned on in the surrounding environment, or the light emitted by the upper module 160 is refracted back through the colored glass to the illumination area of ​​the lower module 170, it may affect the spectrum of the target area. The existing technology has not recognized this problem and proposed a solution.

[0053] To address the aforementioned issues, the full-spectrum floor lamp of this embodiment includes a detection device and a control device. The detection device is used to detect the illumination spectrum of the lower module 170's illuminated area. For example, a spectral sensor (such as a Hamamatsu miniature spectrometer) is used to collect the spectrum (380-780nm) of the illuminated area of ​​lower module 170 in real time. The control device is connected to the red light beads. If the error between the illumination spectrum and the spectrum of sunlight exceeds a preset value, the control device controls the red light beads of upper module 160 and / or lower module 170 to change the wavelength according to the illumination spectrum, so that the illumination spectrum matches the spectrum of sunlight.

[0054] One specific approach is to segment the illumination spectrum curve into wavelength segments to obtain the frequency band wavelength range corresponding to each red light bead (for example, red light bead R1 corresponds to the 430nm to 450nm band, red light bead R2 corresponds to the 451nm to 460nm band, and red light bead R10 corresponds to the 745nm to 760nm band). According to the position of the band where the error is greater than the preset value, the wavelength of the corresponding red light bead is adjusted.

[0055] That is, the full-spectrum target curve is divided into wavelength intervals to obtain multiple wavelength sub-intervals within the range of 380 to 780 nanometers. Based on the spectral characteristic mapping data, red light beads are allocated to the wavelength sub-intervals to ensure that each wavelength sub-interval corresponds to the appropriate red light bead. Then, the wavelength of the red light bead corresponding to the frequency band where the error exceeds the preset value is only adjusted (for example, in the 745nm to 760nm band, when the curve of the illumination spectrum is more than 10% lower than the curve of the sunlight spectrum, only the wavelength of the red light bead R10 is adjusted to increase the wavelength of the frequency band), rather than globally adjusting all red light beads, which can improve accuracy and efficiency.

[0056] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the scope of the present invention.

Claims

1. Full spectrum floor lamp, characterized by, include: base; a lamp post, the bottom end of which is connected to the base; A lamp holder is connected to the top of the lamp pole, and an LED module is provided in the lamp holder. The LED module includes a plurality of light-emitting units, and the light-emitting units include a plurality of red light beads and a plurality of white light beads. The white light beads are arranged between two adjacent red light beads. The red light beads are divided into a first red light bead, a second red light bead, and a third red light bead. The wavelength of the first red light bead is smaller than the wavelength of the second red light bead, and the wavelength of the second red light bead is smaller than the wavelength of the third red light bead.

2. The full-spectrum floor lamp according to claim 1, characterized in that: The ratio of the number of the white light lamp beads to the number of the red light lamp beads ranges from 1 to 2.

3. The full-spectrum floor lamp according to claim 1, characterized in that: The distance between the same white light lamp bead and the adjacent red light lamp bead is smaller than the distance between the same white light lamp bead and the adjacent red light lamp bead.

4. The full-spectrum floor lamp according to claim 1, characterized in that: The LED module is provided with a lens, and the lens is provided on the outside of each lamp bead. The lens is hemispherical, and a recess is provided on the outer surface of the lens facing the lamp bead. The cross-section of the recess is circular, and the cross-sectional diameter of the recess gradually increases in the direction away from the lamp bead.

5. The full-spectrum floor lamp according to claim 1, characterized in that: Along the first direction, the arrangement order of the red light beads is the first red light bead, the second red light bead, the third red light bead, the third red light bead, the first red light bead, the second red light bead, the third red light bead, the third red light bead, the second red light bead and the third red light bead.

6. The full-spectrum floor lamp according to claim 1, characterized in that: Except for one white light lamp bead set on each side of the last red light lamp bead in the first direction, and one white light lamp bead set on the side of the second to last red light lamp bead in the first direction close to the last red light lamp bead, two white light lamp beads are set on each side of the remaining red light lamp beads.

7. The full-spectrum floor lamp according to claim 1, characterized in that: The wavelength range of the first red light bead is 680nm to 710nm, the wavelength range of the second red light bead is 715nm to 740nm, and the wavelength range of the third red light bead is 745nm to 760nm.

8. The full-spectrum floor lamp according to claim 1, characterized in that: The wavelength of each red light bead is configured to be adjustable.

9. The full-spectrum floor lamp according to claim 8, characterized in that: The full-spectrum floor lamp includes a detection device and a control device. The LED module includes an upper module and a lower module. The upper module emits light upward, and the lower module emits light downward. The detection device is used to detect the illumination spectrum of the illumination area of ​​the lower module. The control device is connected to the red light beads. If the error between the illumination spectrum and the spectrum of sunlight is greater than a preset value, the control device controls the red light beads of the upper module and / or the lower module to change the wavelength according to the illumination spectrum so that the illumination spectrum matches the spectrum of sunlight.

10. The full-spectrum floor lamp according to claim 8 or 9, characterized in that: If the error between the illumination spectrum and the spectrum of sunlight is greater than a preset value, the control device controls the red light beads of the upper module and / or the lower module to change the wavelength according to the illumination spectrum, including: The curve of the illumination spectrum is segmented by wavelength to obtain the frequency band wavelength range corresponding to each of the red light lamp beads, and the wavelength of the corresponding red light lamp bead is adjusted according to the position of the band where the error is greater than the preset value.

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