Children's Growth Biological Rhythm Ceiling Lamp and Its Color Temperature Control Method

Abstract

The present invention discloses a children's growth biological rhythm ceiling lamp and its color temperature control method. The children's growth biological rhythm ceiling lamp includes: a mounting base, a lamp base, a control component, a light-emitting component, and a lampshade. The mounting base is detachably connected to the lamp base, and the lampshade is covered on the lamp base; the control component and the light-emitting component are both arranged between the lampshade and the lamp base, and the control component is electrically connected to the light-emitting component. This children's growth biological rhythm ceiling lamp can meet the needs of children in the developmental stage for a healthy light environment, and can also achieve convenient, fast installation and disassembly operations.

Description

Technical Field

[0001] The present invention relates to the technical field of lighting devices, and particularly to a ceiling lamp for children's growth biological rhythm and a color temperature control method thereof. Background Art

[0002] Illumination plays an indispensable role in the development of human civilization. With the progress of technology, people's research on illumination has become more in-depth. Especially in recent years, the concept of healthy lighting has received more and more attention, and research results have been continuously integrated into practical applications. With the in-depth research of lighting science, medicine and biology, it has been revealed that light can regulate the human biological rhythm by stimulating the secretion of melatonin, so that a lighting environment conforming to human health can be created by controlling lighting parameters and lighting environment.

[0003] Relevant data shows that in addition to factors such as genetics, poor eye use postures, and long-term viewing of electronic products, poor lighting is also one of the important causes of myopia in children. Because poor lighting will inhibit the secretion of melatonin in the pineal gland of the brain and the frequent scaling of the pupils during pursuit, resulting in rhythm disorders and vision problems. Existing lighting lamps do not take into account the growth rhythm of children. At the same time, the installation operation of existing ceiling lamps is cumbersome and not convenient enough.

[0004] Therefore, how to design and develop a ceiling lamp for children's growth biological rhythm and a color temperature control method thereof, so that it can meet the needs of children in the developmental period for a healthy light environment, and can achieve convenient and fast installation and disassembly operations, is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art, and provide a ceiling lamp for children's growth biological rhythm and a color temperature control method thereof, so that it can meet the needs of children in the developmental period for a healthy light environment, and can achieve convenient and fast installation and disassembly operations.

[0006] The purpose of the present invention is achieved by the following technical solutions:

[0007] A ceiling lamp for children's growth biological rhythm includes: a mounting base, a lamp base, a control component, a light-emitting component, and a lampshade;

[0008] The mounting base is detachably connected to the lamp base, and the lampshade covers the lamp base;

[0009] The control component and the light-emitting component are both arranged between the lampshade and the lamp base, and the control component is electrically connected to the light-emitting component.

[0010] In one embodiment, a snap seat is provided on the side wall of the mounting base, a clamping groove is formed on the lamp socket, a limiting convex block is provided on the inner wall of the clamping groove, and the limiting convex block is movably connected to the snap seat.

[0011] In one embodiment, the number of the snap seats is multiple, and the multiple snap seats are evenly distributed on the side wall of the mounting base; the number of the limiting convex blocks is the same as that of the snap seats.

[0012] In one embodiment,

[0013] The mounting base is provided with an annular convex rib, and the annular convex rib has a guiding inclined surface and a supporting plane;

[0014] The lamp socket is provided with a sleeve, a deflecting staple is provided on the sleeve, the deflecting staple is rotatably arranged on the sleeve through a torsion spring, and the deflecting staple abuts against or disengages from the annular convex rib;

[0015] The lamp socket is provided with a lock ring, the lock ring is rotatably sleeved outside the sleeve, the lock ring is provided with an unlocking inclined surface and a recessed groove, and one end of the deflecting staple abuts against the lock ring.

[0016] In one embodiment, the number of the deflecting staples is multiple, and the multiple deflecting staples are evenly distributed on the sleeve with the center of the lamp socket as the center; each deflecting staple corresponds to a set of the unlocking inclined surface and the recessed groove.

[0017] In one embodiment, the lock ring is provided with a lever, the lever penetrates through the lamp socket and extends to the outside of the lamp socket, and a return spring is arranged between the lever and the lamp socket.

[0018] In one embodiment, the light-emitting component includes a first light-emitting plate and a second light-emitting plate;

[0019] The color temperature range of the first light-emitting plate is 4000K - 8000K, and the color temperature range of the second light-emitting plate is 2400K - 4500K;

[0020] The light intensity range of the first light-emitting plate and the second light-emitting plate is 300 - 500 lx.

[0021] In one embodiment, the control component includes a controller, and the controller is a 51 single-chip microcomputer; the lamp socket is provided with a heat sink, and the light-emitting component is attached to the lamp socket.

[0022] A color temperature control method for a children's growth biological rhythm ceiling lamp realizes color temperature control through the above-mentioned children's growth biological rhythm ceiling lamp;

[0023] In the time period from 6:00 to 7:00, the color temperature range is 2800K to 3200K;

[0024] In the time period from 7:00 to 8:00, the color temperature range is 3200K to 3600K;

[0025] In the time period from 8:00 to 9:00, the color temperature range is 3600K to 4000K;

[0026] In the time period from 9:00 to 10:00, the color temperature range is 4400K to 4800K;

[0027] In the time period from 10:00 to 17:00, the color temperature range is 4800K to 5100K;

[0028] In the time period from 17:00 to 18:00, the color temperature range is 4400K to 4800K;

[0029] In the time period from 18:00 to 19:00, the color temperature range is 3600K to 4000K.

[0030] In summary, a children's growth biological rhythm ceiling lamp and its color temperature control method according to the present invention can meet the needs of children in the development period for a healthy light environment, and can also achieve convenient, fast installation and disassembly operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0032] Figure 1 is a schematic structural diagram of the children's growth biological rhythm ceiling lamp of the present invention;

[0033] Figure 2 is Figure 1 a schematic exploded view of the children's growth biological rhythm ceiling lamp shown;

[0034] Figure 3 is Figure 2 a schematic structural diagram of the mounting base shown;

[0035] Figure 4 is Figure 2 a partial schematic view of the lamp base shown;

[0036] Figure 5 is a schematic structural diagram of the children's growth biological rhythm ceiling lamp in another embodiment;

[0037] Figure 6 The Figure 5 exploded view of the children's growth biological rhythm ceiling lamp shown in the figure;

[0038] Figure 7 The Figure 6 structural schematic diagram of the mounting base and the locking ring shown in the figure;

[0039] Figure 8 The Figure 6 partial schematic diagram of the lamp base shown in the figure;

[0040] Figure 9 Schematic diagram of the state when the lamp base is separated from the mounting base;

[0041] Figure 10 Schematic diagram of the state during the installation process of the lamp base and the mounting base (one);

[0042] Figure 11 Schematic diagram of the state during the installation process of the lamp base and the mounting base (two);

[0043] Figure 12 Schematic diagram of the state after the lamp base and the mounting base are stably connected;

[0044] Figure 13 The Figure 6 structural schematic diagram of the lamp base shown in the figure;

[0045] Figure 14 Schematic diagram of the connection relationship between the lever and the lamp base. Detailed implementation mode

[0046] For the convenience of understanding the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0047] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation mode.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the present invention herein are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0049] With the in-depth research of lighting science, medicine and biology, it has been revealed that light can regulate the human biological rhythm by stimulating the secretion of melatonin, so that a lighting environment that conforms to human health can be created by controlling lighting parameters and lighting environment. Poor lighting will inhibit the secretion of melatonin in the pineal gland of children's brains and the frequent scaling of pupils during following gaze, resulting in rhythm disorders and vision problems.

[0050] The present invention provides a ceiling lamp for children's growth biological rhythm 10, which enables the indoor color temperature and illuminance to customize a rhythm lighting plan according to the growth rhythm adjustment needs of children, and in addition to meeting other functions than normal lighting, it also meets the needs of children for a healthy light environment during the development period. As Figure 1 and Figure 2 shown, the ceiling lamp for children's growth biological rhythm 10 includes: a mounting base 100, a lamp base 200, a control component 300, a light-emitting component 400 and a lampshade 500. The mounting base 100 is detachably connected to the lamp base 200, the lampshade 500 is covered on the lamp base 200, the control component 300 and the light-emitting component 400 are both arranged between the lampshade 500 and the lamp base 200, and the control component 300 is electrically connected to the light-emitting component 400.

[0051] Among them, as Figure 2 shown, the light-emitting component 400 includes a first light-emitting plate 410 and a second light-emitting plate 420. The color temperature range of the first light-emitting plate 410 is 4000K to 8000K, and the color temperature range of the second light-emitting plate 420 is 2400K to 4500K. According to their different color temperature ranges, the light emitted by the first light-emitting plate 410 is commonly called cold white light, and the first light-emitting plate 410 can also be called a cold white light source; the light emitted by the second light-emitting plate 420 is commonly called warm white light, and the second light-emitting plate 420 can also be called a warm white light source. In this embodiment, the light intensity range of the first light-emitting plate 410 and the second light-emitting plate 420 is 300 to 500 lx.

[0052] When in use, the control component 300 adjusts the light intensity and color temperature of the first light-emitting panel 410 and the second light-emitting panel 420 in real time through a set program, so as to: during the waking-up stage, the children's growth biological rhythm ceiling lamp 10 simulates sunrise, and the light changes from dark to bright within 15 minutes. Along with the change of light, it inhibits the secretion of melatonin, wakes up the visual system, makes the child gradually wake up, and forms a healthy biological clock; it simulates the noon sunlight to help the child improve comprehension and conduct focused learning; during the stage of preparing to go to bed, the children's growth biological rhythm ceiling lamp 10 simulates sunset, and the light gradually dims to turn off the light within 30 minutes starting from the set time. The dim light stimulates the secretion of melatonin, promotes the formation of the sleep rhythm, and makes the child develop the habit of falling asleep independently.

[0053] Specifically, the present invention provides a children's growth biological rhythm ceiling lamp 10, and its color temperature control method is as follows:

[0054] In the time period from 6:00 to 7:00, the color temperature range is 2800K to 3200K;

[0055] In the time period from 7:00 to 8:00, the color temperature range is 3200K to 3600K;

[0056] In the time period from 8:00 to 9:00, the color temperature range is 3600K to 4000K;

[0057] In the time period from 9:00 to 10:00, the color temperature range is 4400K to 4800K;

[0058] In the time period from 10:00 to 17:00, the color temperature range is 4800K to 5100K;

[0059] In the time period from 17:00 to 18:00, the color temperature range is 4400K to 4800K;

[0060] In the time period from 18:00 to 19:00, the color temperature range is 3600K to 4000K.

[0061] For example, the above-mentioned children's growth biological rhythm ceiling lamp 10 can be installed on the ceiling of the children's room. An inductor is set in the children's room. When the inductor senses that there is someone in the room, the light-emitting component 400 is in the active light-emitting state (the set time period for active light emission is from 7:00 to 18:00). During the corresponding time period, the control component 300 controls the light-emitting component 400 to emit the specified color temperature within the corresponding time period. When the inductor senses that there is no one in the room, the light-emitting component 400 is in the active extinguished state.

[0062] In addition, it should be noted that within the time period from 19:00 to 6:00, even if the sensor senses that there is someone in the room, the lighting component 400 does not emit light actively (the lighting component 400 is in the off state), and manual control is required to make the lighting component 400 emit light.

[0063] The mounting base 100 of the present invention is detachably connected to the lamp base 200. Compared with the connection method of the existing ceiling lamp fixed by bolts, the detachable connection method can make the children's growth biological rhythm ceiling lamp 10 of the present invention more convenient and fast when installed on the ceiling (or disassembled).

[0064] The present invention can adopt a connection method of a snap structure. Specifically, as Figure 3 and Figure 4 shown, a snap seat 110 is provided on the side wall of the mounting base 100, a slot 210 is opened on the lamp base 200, and a limiting protrusion 211 is provided on the inner wall of the slot 210. The limiting protrusion 211 is movably connected to the snap seat 110.

[0065] During use, first, the mounting base 100 is fixedly installed on the ceiling by bolts. During installation, the staff holds up the lamp base 200, makes it close to the mounting base 100, and aligns the slot 210 with the mounting base 100, so that the limiting protrusion 211 and the snap seat 110 are misaligned with each other; then, the mounting base 100 is inserted into the slot 210, and then the lamp base 200 is rotated in the specified direction, and the limiting protrusion 211 thereon rotates to the snap seat 110, and then the limiting protrusion 211 and the snap seat 110 cooperate to hold (the limiting protrusion 211 is inserted into and held in the snap seat 110), so that the connection between the lamp base 200 and the mounting base 100 is realized. During disassembly, the staff rotates the lamp base 200 forcefully in the opposite direction, so that the limiting protrusion 211 thereon slides out of the snap seat 110, and the limiting protrusion 211 is separated from the snap seat 110, so that the lamp base 200 can be removed.

[0066] Preferably, the number of snap seats 110 is multiple, and the multiple snap seats 110 are evenly distributed on the side wall of the mounting base 100, and the number of limiting protrusions 211 is the same as the number of snap seats 110. Moreover, the opening directions of the multiple snap seats 110 are the same. During use, the staff makes the multiple limiting protrusions 211 respectively snap into or disengage from the multiple snap seats 110 by rotating.

[0067] In the actual use process, it is found that the connection method realized by the above buckle structure (or a similar buckle structure) has the following disadvantages: when disassembling, the operator rotates the lamp holder 200 with both hands forcefully, so that the limiting lug 211 is separated from the buckle seat 110. However, in this process, the operator's both hands operation means that there is no support or reliance, and it is easy to fall due to unstable center when rotating forcefully, which poses a safety hazard. To solve the above technical problems and make the operator safer when disassembling, in another embodiment, the present invention makes a special design for the connection between the mounting seat 100 and the lamp holder 200.

[0068] Specifically, as Figure 5 and Figure 6 shown, the mounting seat 100 is provided with an annular rib 120, the lamp holder 200 is provided with a sleeve 220, the sleeve 220 is provided with a deflecting stud 221, the deflecting stud 221 is rotatably arranged on the sleeve 220 through a torsion spring, and the deflecting stud 221 abuts against or disengages from the annular rib 120.

[0069] The lamp holder 200 is provided with a lock ring 230, the lock ring 230 is rotatably sleeved outside the sleeve 220, the lock ring 230 is provided with an unlocking inclined surface 231 and a recessed groove 232, and one end of the deflecting stud 221 abuts against the lock ring 230. It should be noted that when the deflecting stud 221 is not affected by an external force, under the action of the torsion spring, the deflecting stud 221 will remain in a horizontal state (as Figure 8 shown).

[0070] As Figure 7 shown, the annular rib 120 has a guiding inclined surface 121 and a holding plane 122.

[0071] Next, the working principle of the mounting seat 100 and the lamp holder 200 will be described:

[0072] Initially, the operator first fixes the mounting seat 100 to the ceiling through bolts;

[0073] When installing, the operator lifts the lamp holder 200 so that the sleeve 220 is aligned with the annular rib 120 of the lamp holder 200 (as Figure 9 shown); then push the lamp holder 200 so that the annular rib 120 of the lamp holder 200 is inserted into the sleeve 220 (as Figure 10 and Figure 11 shown). In this process, the annular rib 120 will first come into contact with the deflecting stud 221. As the lamp holder 200 rises, the deflecting stud 221 deflects under the pressing and guiding of the guiding inclined surface 121 of the annular rib 120 (as Figure 10As shown, one end of the deflection pin 221 is tilted upward; after the annular ridge 120 is completely immersed in the sleeve 220, the deflection pin 221 is no longer pressed by the guide slope 121, and the deflection pin 221 returns to the horizontal state under the action of the torsion spring (as shown in FIG. Figure 11 As shown). Then, the staff releases the hand that lifts the lamp holder 200, and the lamp holder 200 falls downward under the action of gravity. At this time, one end of the deflection pin 221 is resisted by the resisting plane 122 of the annular convex ridge 120, and the deflection pin 221 is deflected, and the other end thereof is pressed and sunk into the concave groove 232 of the lock ring 230 (as shown). Figure 12 At this time, the deflection pin 221 cannot be further deflected, and the annular ridge 120 and the deflection pin 221 are clamped together, and the lamp holder 200 cannot be separated from the mounting base 100, thereby achieving a stable connection;

[0074] When disassembling, the staff first lifts the lamp holder 200 with one hand, so that the annular ridge 120 is sunk into the sleeve 220 again, and the deflection pin 221 is separated from the abutting plane 122 and resets to a horizontal state under the action of the torsion spring (such as Figure 11 As shown in the figure, the deflection staple 221 is no longer trapped in the recessed groove 232. Then, the staff member drives the lock ring 230 to rotate with the other hand, so that the unlocking inclined surface 231 of the lock ring 230 contacts the deflection staple 221. Under the push and guidance of the unlocking inclined surface 231, the deflection staple 221 is deflected and tilted up (as shown in the figure). Figure 10 and Figure 13 At this time, the deflected clamp 221 will no longer block the annular ridge 120, and the annular ridge 120 is ready to be separated from the sleeve 220. The staff slowly removes the lamp holder 200 to separate and disassemble the lamp holder 200 from the mounting base 100.

[0075] It should be noted that compared with the buckle structure design, when disassembling the mounting base 100 and the lamp holder 200 in this embodiment, the staff only needs to lift the lamp holder 200 while turning the lock ring 230 to complete the unlocking. In this way, the staff does not need to apply force in the same direction with both hands, and will not fall due to unstable center of gravity.

[0076] It should be emphasized that the mounting base 100 and the lamp holder 200 of this embodiment also have a design to prevent misoperation. When the lamp holder 200 is stably connected to the mounting base 100, the deflection pin 221 is deflected by the abutment of the abutment plane 122, and the end of the deflection pin 221 is sunken into the recessed groove 232 of the lock ring 230. If the staff does not lift the lamp holder 200 during disassembly, but directly drives the lock ring 230, then the deflection pin 221 and the recessed groove 232 are mutually clamped, and the lock ring 230 cannot rotate. Only when the staff first lifts the lamp holder 200, so that the deflection pin 221 is separated from the annular convex ridge 120, at this time, the deflection pin 221 returns to the horizontal state under the action of the torsion spring, and the deflection pin 221 is no longer clamped with the recessed groove 232, and the lock ring 230 can be driven. In this way, the staff can only operate according to the specified steps, so as to ensure that when the lamp holder 200 is separated from the mounting base 100, one of the staff's hands will always hold the lamp holder 200, and the lamp holder 200 will not fall due to misoperation, which has very good safety.

[0077] In this embodiment, there are multiple deflection pins 221, and the multiple deflection pins 221 are evenly distributed on the sleeve 220 with the center of the lamp holder 200 as the center. In addition, each deflection pin 221 corresponds to a set of unlocking inclined surfaces 231 and recessed grooves 232. Multiple deflection pins 221 can make the connection between the lamp holder 200 and the mounting base 100 more stable.

[0078] Preferably, Figure 6 and Figure 14 As shown, a lever 233 is provided on the lock ring 230, and the lever 233 is passed through the lamp holder 200 and extends to the outside of the lamp holder 200, and a return spring 234 is provided between the lever 233 and the lamp holder 200. When disassembling, the staff can drive the lock ring 230 to rotate in a specified direction by shifting the lever 233, and the return spring 234 is stretched at the same time; after releasing the lever, the lever 233 will be reset under the action of the return spring 234, and the lock ring 230 will also rotate back to the original position, and the concave groove 232 will correspond to the position of the deflection nail 221 again.

[0079] In one embodiment, the control component 300 of the children's growth biorhythm ceiling lamp 10 includes a controller (not shown), and the controller can be a 51 single-chip microcomputer. A 51 single-chip microcomputer is a general term for single-chip microcomputers compatible with the Intel 8051 instruction system. 51 single-chip microcomputers are widely used in household appliances, automobiles, industrial measurement and control, and communication equipment.

[0080] In one embodiment, if Figure 2As shown, a heat sink 240 is provided on the lamp base 200, and the light-emitting component 400 is attached to the lamp base 200. When the light-emitting component 400 is in use for illumination, heat is generated and transferred to the lamp base 200. The design of the heat sink 240 can increase the heat dissipation area of the lamp base 200, thereby obtaining a better heat dissipation effect.

[0081] In summary, the children's growth biological rhythm ceiling lamp 10 of the present invention can meet the needs of children in the development period for a healthy light environment, and can also achieve convenient, fast installation and disassembly operations.

[0082] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent should be subject to the appended claims.

Claims

1. A biological rhythm ceiling lamp for children's growth, characterized in that, Comprising: A mounting base, a lamp base, a control component, a light-emitting component, and a lampshade; The mounting base is detachably connected to the lamp base, and the lampshade is covered on the lamp base; The control component and the light-emitting component are both arranged between the lampshade and the lamp base, and the control component is electrically connected to the light-emitting component; The mounting base is provided with an annular convex rib, and the annular convex rib has a guiding inclined surface and a supporting plane; the lamp base is provided with a sleeve, and the sleeve is provided with a deflecting nail, and the deflecting nail is rotatably arranged on the sleeve through a torsion spring, and the deflecting nail abuts against or disengages from the annular convex rib; the lamp base is provided with a lock ring, and the lock ring is rotatably sleeved outside the sleeve, and the lock ring is provided with an unlocking inclined surface and a concave groove, and one end of the deflecting nail abuts against the lock ring; The lock ring is provided with a lever, the lever penetrates through the lamp base and extends to the outside of the lamp base, and a return spring is arranged between the lever and the lamp base.

2. The children's growth biological rhythm ceiling lamp according to claim 1, characterized in that The number of the deflecting nails is multiple, and the multiple deflecting nails are uniformly distributed on the sleeve with the center of the lamp base as the center; each deflecting nail corresponds to a set of the unlocking inclined surface and the concave groove.

3. The children's growth biological rhythm ceiling lamp according to claim 1, characterized in that, The light-emitting component includes a first light-emitting plate and a second light-emitting plate; The color temperature range of the first light-emitting plate is 4000K to 8000K, and the color temperature range of the second light-emitting plate is 2400K to 4500K; The light intensity range of the first light-emitting plate and the second light-emitting plate is 300 to 500 lx.

4. The children's growth biological rhythm ceiling lamp according to claim 1, characterized in that, The control component includes a controller, and the controller is a 51 single-chip microcomputer; the lamp base is provided with a heat sink, and the light-emitting component is adhered to the lamp base.

5. A method for controlling the color temperature of a biological rhythm ceiling lamp for children's growth, characterized in that, The color temperature control is realized by the children's growth biological rhythm ceiling lamp according to any one of claims 1 to 4; In the time period from 6:00 to 7:00, the color temperature range is 2800K to 3200K; In the time period from 7:00 to 8:00, the color temperature range is 3200K to 3600K; In the time period from 8:00 to 9:00, the color temperature range is 3600K to 4000K; In the time period from 9:00 to 10:00, the color temperature range is 4400K to 4800K; In the time period from 10:00 to 17:00, the color temperature range is 4800K to 5100K; In the time period from 17:00 to 18:00, the color temperature range is 4400K to 4800K; In the time period from 18:00 to 19:00, the color temperature range is 3600K to 4000K.

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