An eye protection desk lamp based on dual light sources simulating solar spectrum

Abstract

The present application belongs to the field of lighting technology, and discloses an eye-protection desk lamp based on dual-light source simulation of solar spectrum, including a shell assembly, the shell assembly including a base, a column and a lamp holder, the bottom end of the column is rotatably connected to the top center of the base, the lamp holder is provided with two, both of which are symmetrically and movably connected to the top sides of the column through adjusting connectors, so that the lamp holder can rotate bidirectionally on the longitudinal axis and the transverse axis, and the bottom of the lamp holder is provided with a first light source cavity and a second light source cavity, the first light source cavity is fixedly installed with an LED light board, and the second light source cavity is detachably and fixedly connected with a modified halogen lamp. The present application can take the best of both worlds by combining LED and xenon lamp as light sources, and obtain a continuous spectrum of continuous high energy from blue light to red light to near infrared, which is closer to the natural sunlight spectrum, more comfortable visual experience, good color rendering, and more beneficial to the vision health of teenagers.

Description

Technical Field

[0001] The present application relates to the field of lighting technology, and more specifically, to an eye-protection desk lamp based on dual light sources to simulate the solar spectrum. Background Art

[0002] At present, household lighting is mainly LED light source. From the perspective of the light-emitting principle of lamp beads, there are basically two types: blue light chip excitation and purple light chip excitation.

[0003] A blue light chip is a device that emits light through electroluminescence from semiconductor materials. By introducing other media into semiconductor materials with slightly different energy bands, the energy difference can be regulated to produce blue light wavelengths. The luminous effect is closely related to the structure of the internal light-emitting layer. Common structures include multiple quantum wells and double heterostructures. This blue light excites the yellow fluorescent layer to produce yellow light, which is then mixed with blue light to produce white light. LED lamps based on blue light chips are currently the mainstream home lighting. They are low-priced, high-efficiency, stable in performance, and long-life, but the disadvantage is that there will be a blue light peak spectrum (such as Figure 1 a) In the context of eye protection, more and more people are beginning to pay attention to the adverse effects of excessive blue light on the eyes.

[0004] The purple light chip is an LED chip that uses gallium nitride (GaN) material as the light-emitting layer. Its basic structure consists of the following parts: substrate layer (Substrate), GaN growth layer (Growth Layer), P-type injection layer (P-Injection Layer), N-type injection layer (N-Injection Layer), transparent conductive layer (Transparent Conductive Layer) and metal electrode (Metal Electrode). The working principle of the purple light LED chip is based on the principle of solid-state electronics. When a forward voltage is applied, electrons are injected from the N-type injection layer to the P-type injection layer, and holes are injected from the P-type injection layer to the N-type injection layer. When electrons and holes recombine with each other, energy is released to generate photons, thereby generating luminescence. Purple light LEDs do not produce blue light, so there is no peak in the blue light spectrum. By combining different phosphor blending ratios, a relatively uniform spectrum can be made in the visible light part. However, this spectrum is limited to the visible light part, and the energy of the blue-violet end and the red light end is missing, which is still a large gap from the natural sunlight source (such as Figure 1 b).

[0005] In addition to LED light sources, there is also a halogen lamp (tungsten halogen lamp), which is an incandescent lamp with some halogen gas added. Its light-emitting principle is ionized light emission, and it is a high-voltage lamp product. It is filled with 95% mixed gas (mainly iodine and bromine) and 5% high-purity nitrogen. These gases establish a halogen tungsten cycle inside the bulb, making it more durable than traditional incandescent lamps, and at the same time, the light efficiency and service life are significantly improved. However, the spectrum of halogen lamps is triangular, with poor or even missing short-wave bands, and relatively abundant long-wave red light and near-infrared (such as Figure 1 c) In addition, the luminous efficiency of halogen lamps is lower than that of LEDs, and most of the electrical energy is converted into heat energy, so they are not widely used in household lighting.

[0006] Existing studies have shown that blue-violet light plays a major role in the development of vision, but excessive blue light protection in artificial lighting, widespread use of car window glass solar film, and reduced outdoor activity time have caused a sharp drop in the time that the human eye is exposed to blue-violet light, which may be one of the reasons for the high incidence of myopia. Indian scholars once placed 29 young people aged 20 to 32 in a room with four different wavelengths of white light, red light, green light, and blue light for one hour, and observed that the blue light environment was the most effective in combating the thinning of the choroid caused by close-range eye use. In 2017, Hidemasa Torii et al. retrospectively studied 21 adults with high myopia who had undergone lens implantation correction surgery five years later and found that patients who had implanted blue-light-proof lenses had more myopia than those who did not. Japanese scholars have developed blue-light-based myopia prevention and control glasses and achieved good results. All of the above shows that short-wave blue-violet light is a band that is beneficial to visual development and combating myopia.

[0007] In addition to short-wave blue-violet light, many studies have shown that long-wave deep red light and even near-infrared light also have a good effect on visual development, myopia prevention and control, and even many aspects of the body. For example, repeated low-intensity 650nm red light (light feeding device) is effective in controlling myopia in children, and 670nm is used to treat diabetic retinopathy. Ken Zhao and others reviewed the application of near-infrared (NIR), focusing on the ability of NIR to stimulate various neurons through light radiation, including the facial nerve, cochlea, vestibular system and cortex, all of which have a good effect.

[0008] To sum up, a full-spectrum light source that is beneficial for myopia prevention and control should have a broad and continuous spectrum like natural sunlight, whether it is short-wave blue-violet light, long-wave deep red light or even near-infrared light, it should be continuous and rich.

[0009] Current myopia prevention and control research believes that a certain amount of short-wave blue light and long-wave red light are necessary for normal visual development and to prevent myopia. Outdoor activities are increasingly encouraged, and more than 2 hours of outdoor sunlight a day is beneficial for preventing and controlling myopia. For artificial lighting, maintaining a broad and continuous spectrum is the best light source for visual development, but most of the current light sources are short-wave excitation light sources, with discontinuous blue light peaks and insufficient or even missing red light.

[0010] Visible light generally refers to electromagnetic waves with a wavelength of 380 to 780 nm, which are visually identified as different colors according to different wavelengths, with short waves being bluer and purpler, and long waves being redder. Existing eye-protection desk lamps advocate no blue light, no flicker, and no radiation. The mainstream lamp beads are excited by blue light chips or purple light chips, and their spectral distributions are different, but these lamp beads generally have the problem of incomplete spectrum, mainly due to insufficient energy at the long-wave end. There are several eye protection products on the market that splice red LED lamp beads of specific wavelengths on the basis of ordinary lamp beads, such as 660nm, 730nm or 850nm, hoping to improve the spectrum and achieve a better eye protection effect, but it is still not a continuous spectrum, but only forms a peak at a specific wavelength.

[0011] Current eye protection lamps only focus on the visible spectrum, and are basically missing electromagnetic waves beyond the blue-violet and red ends. This is very different from the real solar spectrum. The solar spectrum reaching the ground is blocked and absorbed by the atmosphere and water vapor, and short waves other than UVB basically disappear, but near-infrared is quite rich. The beneficial effects of near-infrared on the human body include but are not limited to stimulating blood circulation, hair growth, physical therapy and rehabilitation, nerve repair, and improving immunity.

[0012] In addition, whether it is the traditional blue light chip excited or purple light chip excited LED light source, or the full spectrum lamp marked on the market, they are all cold light sources, completely missing the near infrared part, which has been proven to be beneficial to the eyes and other organs of the body by more and more studies. However, the existing lamp beads of eye protection desk lamps generally have incomplete spectrum. Even after using additional specific wavelength lamp beads to improve the spectrum, it is still not a continuous spectrum. This problem has not been properly solved. Summary of the invention

[0013] In order to solve the deficiencies in the prior art, the present application provides an eye-protection desk lamp based on dual light sources to simulate the solar spectrum.

[0014] The present application provides an eye protection desk lamp based on dual light sources simulating the solar spectrum, which adopts the following technical solutions:

[0015] An eye-protection desk lamp based on dual-light source simulation of solar spectrum comprises a shell assembly, wherein the shell assembly comprises a base, a column and a lamp holder, the bottom end of the column is rotatably connected to the top center of the base, the lamp holder is provided with two, both of which are symmetrically and movably connected to the two sides of the top of the column through adjusting connecting pieces, so that the lamp holder can rotate bidirectionally on the longitudinal axis and the transverse axis, the bottom of the lamp holder is provided with a first light source cavity and a second light source cavity, an LED light board is fixedly installed in the first light source cavity, an improved halogen lamp is detachably and fixedly connected in the second light source cavity, a control unit is fixedly connected in the base, the control unit is electrically connected to the LED light board and the improved halogen lamp, and is used for adjusting the brightness of the LED light board and the improved halogen lamp respectively and controlling the two to be turned on and off separately.

[0016] Furthermore, the adjustment connecting member includes a longitudinal axis seat for longitudinal rotation and a transverse axis seat for transverse rotation. The longitudinal axis seat is cross-shaped, and its bottom end is rotatably connected to the top of the column, and its two side ends are respectively hinged to the inner side surfaces of the two transverse axis seats, and the top surface of the end of the transverse axis seat is rotatably connected to the bottom surface of the lamp holder.

[0017] Through the above technical solution, the combined use of the longitudinal axis seat and the transverse axis seat enables the lamp head to rotate bidirectionally on the longitudinal axis and the transverse axis, which is convenient for adjusting the irradiation angle, irradiation height and irradiation range.

[0018] Furthermore, each joint connection of the adjusting connecting member is provided with a rotating shaft damper.

[0019] Through the above technical solution, the rotation adjustment is made more stable.

[0020] Furthermore, the length of the first light source cavity is greater than that of the second light source cavity, and the second light source cavity is located at the outermost end of the bottom of the lamp holder.

[0021] Furthermore, the LED light board is a purple light excited LED lamp bead with a color temperature of 4500k to 6000k.

[0022] Furthermore, the internal filling gas of the improved halogen lamp is a mixture of krypton and xenon.

[0023] Through the above technical solutions, the LED light panel can provide relatively sufficient short-wave blue light, and the improved halogen lamp can provide richer deep red light including near-infrared rays. By adding a mixture of krypton and xenon gases to the halogen lamp, the brightness is increased, the life is extended, and the lighting effect is also improved.

[0024] Furthermore, a first light diffuser is fixedly connected to the bottom of the first light source cavity.

[0025] Furthermore, a second light diffuser is clamped at the bottom of the second light source cavity via a limiting clamp.

[0026] Through the above technical solution, the uniformity of lighting is improved, and the rotatable setting of the second light homogenizing plate facilitates the replacement of the improved halogen lamp beads.

[0027] Furthermore, a heat dissipation grille hole penetrating the outside is arranged in an array on the top of the second light source cavity.

[0028] The above technical solution facilitates heat dissipation of the halogen lamp.

[0029] Furthermore, a heat insulation layer is provided on the inner wall of the second light source cavity, and a reflective layer is provided on the surface of the heat insulation layer.

[0030] Through the above technical solution, the material of the heat insulation layer is aluminum alloy, and the material of the reflective layer is nickel. Nickel is plated on the aluminum alloy to create a mirror-like effect, which not only increases the light reflection effect, but also leads the heat generated by the halogen lamp to the bottom, thereby reducing the heat on the back of the lamp holder.

[0031] In summary, the present application includes at least one of the following beneficial technical effects:

[0032] The present application uses a combined light source of LED and xenon halogen lamp to take the best of both worlds, obtaining a continuous spectrum of high energy from blue light to red light to near infrared, which is closer to the natural sunlight spectrum, provides more comfortable visual experience, has good color rendering, and is more beneficial to the vision health of teenagers. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Spectra of various light sources in the prior art;

[0034] Figure 2 This is a schematic diagram of the structure of this application;

[0035] Figure 3 This is a schematic diagram of the structural breakdown of this application;

[0036] Figure 4 This is a schematic diagram of the structure of the lamp holder of this application;

[0037] Figure 5 This is the spectrum diagram when the dual light sources of this application are turned on;

[0038] Figure 6 The working principle diagram of the control unit for this application;

[0039] Figure 7 This is a structural circuit diagram of this application.

[0040] Description of the numbers in the figure:

[0041] 1. Base; 2. Cylinder; 3. Lamp holder; 31. First light source cavity; 32. Second light source cavity; 33. First light diffuser; 34. Second light diffuser; 35. Limiting bracket; 36. Heat dissipation grille hole; 4. Adjusting connector; 41. Longitudinal axis seat; 42. Horizontal axis seat; 43. Rotating shaft damper; 5. LED lamp board; 6. Improved halogen lamp; 7. Control unit. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0043] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" 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 application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0044] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] Embodiment 1:

[0046] The present application is further described in detail below in conjunction with the accompanying drawings.

[0047] The embodiment of the present application discloses an eye-protection desk lamp based on dual-light source simulation of solar spectrum, including a shell assembly, the shell assembly including a base 1, a column 2 and a lamp holder 3, the bottom end of the column 2 is rotatably connected to the top center of the base 1, and two lamp holders 3 are provided, both of which are symmetrically and movably connected to the two sides of the top of the column 2 through an adjusting connector 4, so that the lamp holder 3 can rotate bidirectionally on the longitudinal axis and the transverse axis, and a first light source cavity 31 and a second light source cavity 32 are provided at the bottom of the lamp holder 3, an LED light board 5 is fixedly installed in the first light source cavity 31, and an improved halogen lamp 6 is detachably and fixedly connected in the second light source cavity 32, and a control unit 7 is fixedly connected in the base 1, and the control unit 7 is electrically connected to the LED light board 5 and the improved halogen lamp 6, and is used to adjust the brightness of the LED light board 5 and the improved halogen lamp 6 respectively and control the two to be turned on and off separately.

[0048] See also Figure 2 and Figure 3 The adjustment connector 4 includes a longitudinal axis seat 41 for longitudinal rotation and a transverse axis seat 42 for transverse rotation. The longitudinal axis seat 41 is cross-shaped, and its bottom end is rotatably connected to the top of the column 2. Its two side ends are respectively hinged to the inner side surfaces of the two transverse axis seats 42, and the top surface of the end of the transverse axis seat 42 is rotatably connected to the bottom surface of the lamp holder 3. The combined use of the longitudinal axis seat 41 and the transverse axis seat 42 enables the lamp holder 3 to rotate bidirectionally on the longitudinal axis and the transverse axis, which is convenient for adjusting the irradiation angle, irradiation height and irradiation range. Preferably, each joint connection of the adjustment connector 4 is provided with a shaft damper 43 to make the rotation adjustment more stable.

[0049] See also Figure 4 The length of the first light source cavity 31 is greater than that of the second light source cavity 32 , and the second light source cavity 32 is located at the outermost end of the bottom of the lamp holder 3 .

[0050] As a preferred embodiment of this embodiment, the LED lamp board 5 is a purple light-excited LED lamp bead with a color temperature of 5000K. The internal filling gas of the improved halogen lamp 6 is a mixture of krypton and xenon. The LED lamp board 5 can provide relatively sufficient short-wave blue light, and the improved halogen lamp 6 can provide richer deep red light including near infrared rays. By adding a mixture of krypton and xenon to the halogen lamp, the brightness is improved, the life is extended, and the light effect is also improved.

[0051] The first light diffuser 33 is fixedly connected to the bottom of the first light source cavity 31. The second light diffuser 33 is clamped to the bottom of the second light source cavity 32 through a limiter. The uniformity of the illumination is improved, and the rotatable setting of the second light diffuser 34 facilitates the replacement of the lamp beads of the improved halogen lamp 6. The top of the second light source cavity 32 is also arrayed with heat dissipation grid holes 36 that penetrate the outside to facilitate the heat dissipation of the halogen lamp.

[0052] The inner wall of the second light source cavity 32 is provided with a heat insulation layer, and the surface of the heat insulation layer is provided with a reflective layer. The heat insulation layer is made of aluminum alloy, and the reflective layer is made of nickel. Nickel is plated on the aluminum alloy to produce a mirror-like effect, which can not only increase the light reflection effect, but also guide the heat generated by the halogen lamp downwards, reducing the heat generated by the back of the lamp holder.

[0053] The implementation principle of the eye protection desk lamp based on dual light sources to simulate the solar spectrum in the embodiment of the present application is as follows: the present application can take the best of both worlds by combining LED and xenon halogen lamps to obtain a continuous spectrum with high energy from blue light to red light to near infrared, which is closer to the natural sunlight spectrum. Figure 5 As shown. Among them, the LED lamp selects a higher color temperature (4500k~6000k), which can provide more sufficient short-wave blue light, and the halogen lamp can provide richer deep red light including near-infrared. Since ordinary halogen lamps have low color temperature, short service life, insufficient brightness and other problems, this application adds xenon gas to the halogen lamp tube to increase the brightness, extend the life, and improve the light efficiency. The control unit 7 controls the LED and the improved halogen lamp 6 respectively, so that different color temperatures and spectral compositions are suitable for different scenes: 1. When the two light sources are turned on at the same time, the high illumination and full spectrum state are more like daylight during the day, which is suitable for reading and learning for myopia prevention and control. The rich blue light can keep children awake and focused. 2. Before going to bed, you can turn off the LED and only keep the halogen lamp. At this time, the light source is more like the glow of sunrise and sunset, and the short-wave content of the desk lamp decreases, which is beneficial for the human body to adjust the circadian rhythm and enter the bedtime state in advance. By combining the two light sources with different power and color temperature, a state close to the daylight spectrum of a day can be adjusted. The specific circuit control principle and circuit diagram are as follows Figure 6 and Figure 7 shown.

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An eye protection desk lamp based on dual light sources simulating solar spectrum, comprising a housing assembly, wherein the housing assembly comprises a base (1), a column (2) and a lamp holder (3), characterized in that: The bottom end of the column (2) is rotatably connected to the top center of the base (1); two lamp heads (3) are provided, both of which are symmetrically and movably connected to the two sides of the top of the column (2) through an adjusting connection piece (4), so that the lamp head (3) can be bidirectionally rotated on the longitudinal axis and the transverse axis; the bottom of the lamp head (3) is provided with a first light source cavity (31) and a second light source cavity (32); an LED light board (5) is fixedly installed in the first light source cavity (31); an improved halogen lamp (6) is detachably and fixedly connected in the second light source cavity (32); a control unit (7) is fixedly connected to the base (1); the control unit (7) is electrically connected to the LED light board (5) and the improved halogen lamp (6) and is used to adjust the brightness of the LED light board (5) and the improved halogen lamp (6) and to control the two to be turned on and off separately.

2. The eye protection desk lamp based on dual light sources simulating solar spectrum according to claim 1, characterized in that: The adjusting connecting member (4) comprises a longitudinal axis seat (41) for longitudinal rotation and a transverse axis seat (42) for transverse rotation. The longitudinal axis seat (41) is cross-shaped, and its bottom end is rotatably connected to the top end of the column (2). Its two side ends are respectively hinged to the inner side surfaces of the two transverse axis seats (42). The top surface of the end of the transverse axis seat (42) is rotatably connected to the bottom surface of the lamp holder (3).

3. The eye protection desk lamp based on dual light sources simulating solar spectrum according to claim 2, characterized in that: Each joint connection of the adjusting connecting piece is provided with a rotating shaft damper (43).

4. The eye protection desk lamp based on dual light sources simulating solar spectrum according to claim 1, characterized in that: The length of the first light source cavity (31) is greater than that of the second light source cavity (32), and the second light source cavity (32) is located at the outermost end of the bottom of the lamp holder (3).

5. The eye protection desk lamp based on dual light sources simulating solar spectrum according to claim 1, characterized in that: The LED lamp board (5) is a purple light-excited LED lamp bead with a color temperature of 4500K to 6000K.

6. The eye protection desk lamp based on dual light sources simulating solar spectrum according to claim 5, characterized in that: The internal filling gas of the improved halogen lamp (6) is a mixture of krypton gas and xenon gas.

7. The eye protection desk lamp based on dual light sources simulating solar spectrum according to claim 1, characterized in that: A first light diffuser (33) is fixedly connected to the bottom of the first light source cavity (31).

8. The eye protection desk lamp based on dual light sources simulating solar spectrum according to claim 1, characterized in that: A second light diffuser (34) is clamped at the bottom of the second light source cavity (32) via a limiting clamp (35).

9. The eye protection desk lamp based on dual light sources simulating solar spectrum according to claim 1, characterized in that: The top of the second light source cavity (32) is also provided with heat dissipation grid holes (36) in an array that penetrate the outside.

10. The eye protection desk lamp based on dual light sources simulating solar spectrum according to claim 1, characterized in that: The inner wall of the second light source cavity (32) is provided with a heat insulation layer, and the surface of the heat insulation layer is provided with a reflective layer.

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