Operation shadowless lamp

Abstract

The invention discloses an operation shadowless lamp which comprises a lampshade, a sleeve rod and a rotating assembly. The linkage assembly comprises a connecting rope and a spring; the rotating assembly comprises an input rotating shaft, a plurality of transmission rotating shafts and an output rotating shaft which are sequentially arranged. The input rotating shaft and the adjacent transmission rotating shafts, the adjacent transmission rotating shafts and the output rotating shaft and the adjacent transmission rotating shafts are connected through speed reduction assemblies respectively. The input rotating shaft extends into the sleeve rod and is in running fit with the sleeve rod, and the output rotating shaft extends out of the sleeve rod and is in running fit with the lampshade; the speed reduction assembly comprises a plurality of planet wheels and a plurality of pins. The sleeve rods are arranged at the sunken positions of the lampshades 10, the lampshades are hollow, every two adjacent sets of installation bases are oppositely arranged or arranged in a staggered mode, and the ends, connected with the inner fasteners, of the sleeve rods are conical. According to the operating shadowless lamp, the problem that the position of a single bulb is changed is solved, the concentrated lighting effect is good, the adjusting force is small, and the problem that the whole shadowless lamp shakes or the whole position of the shadowless lamp is changed is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to an operating shadowless lamp. Background Art

[0002] The operating shadowless lamp is used for illuminating the surgical site to reduce or eliminate the influence of shadows generated by the head, hands, instruments, etc. on the surgical site. During the operation, due to the particularity of the surgical wound surface and the endoscopic area of the surgical wound surface, a shadowed area will still be formed. At this time, it is necessary to move the projection position of the shadowless lamp to improve the shadowless area of the surgical wound surface. And during the surgical operation, sometimes it is necessary to concentrate the illumination on a certain position. However, due to the relatively scattered lamp heads of the shadowless lamp, sufficient illumination cannot be provided for a specific part.

[0003] In the prior art, usually, the method of expanding or contracting the lamp cover of the shadowless lamp is adopted to concentrate the illumination to enhance or weaken the light of the surgical site. At this time, the lamp cover of the shadowless lamp will adopt a multi-piece type, and adjacent two pieces are connected by an elastic material, or directly made of an elastic material. During use, the light bulb of the shadowless lamp will change its original orientation due to elastic deformation, resulting in inconsistent changes in orientation. When concentrating the illumination on a certain position, the illumination effect is not good; moreover, the weight of the lamp cover of the shadowless lamp is relatively large. When adjusting the lamp cover of the shadowless lamp, it is time-consuming and laborious, and it is also easy to cause the overall shaking of the shadowless lamp or change the overall position of the shadowless lamp. Summary of the Invention

[0004] The main purpose of the present invention is to provide an operating shadowless lamp, which will not have the problem of the position change of a single light bulb, has a better concentrated illumination effect, and has a smaller adjustment force, and will not cause the overall shaking of the shadowless lamp or change the overall position of the shadowless lamp; it also reduces the influence of human factors on the brightness adjustment, ensures the reliability of the adjustment, and improves the accuracy of the brightness adjustment.

[0005] To achieve the above object, the technical solution adopted by the present invention is: an operating shadowless lamp, comprising: A lamp cover, the lamp cover is provided with a plurality of groups of light bulbs along the radial direction, and the light bulbs are rotatably arranged on the inner side of the lamp cover through lamp holders; A sleeve rod, one end of the sleeve rod is arranged in the middle of the bottom side of the lamp cover, and the other end of the sleeve rod extends outward from the inner side of the lamp cover; And a rotating assembly, the rotating assembly passes through the sleeve rod and is rotatably matched with the sleeve rod and the lamp cover respectively, and each group of the light bulbs is respectively connected with the rotating assembly through a linkage assembly; All the light bulbs rotate synchronously towards or away from the sleeve rod through the rotating assembly and the linkage assembly to realize the adjustment of the brightness; The linkage assembly includes a connecting rope and a spring; among the bulbs in the same group, adjacent bulb sockets are connected by the connecting rope, the bulb socket close to the sleeve rod is connected to the rotating assembly by the connecting rope, the bulb socket far from the sleeve rod is connected to the spring by the connecting rope, and the spring is connected to the lampshade; The rotating assembly includes an input rotating shaft, a plurality of transmission rotating shafts, and an output rotating shaft arranged in sequence. The input rotating shaft is connected to the adjacent transmission rotating shaft, between adjacent transmission rotating shafts, and the output rotating shaft is connected to the adjacent transmission rotating shaft by a speed reduction assembly respectively; the input rotating shaft extends into the sleeve rod and is rotationally matched with the sleeve rod, and the output rotating shaft extends out of the sleeve rod and is rotationally matched with the lampshade; The speed reduction assembly includes a plurality of planet gears and a plurality of pins; the planet gears are respectively meshed with the outer side of the corresponding rotating shaft and the inner side of the sleeve rod, and the center of the planet gear is connected to the next rotating shaft by the pin; The overall shape of the lampshade is arc-shaped. The sleeve rod is arranged at the concave position of the lampshade 10. The lampshade is hollow and includes an outer fastener and an inner fastener. The inner side wall of the outer fastener is provided with mounting seats corresponding to the bulb sockets one by one. Each group of mounting seats is arranged along the radial direction of the lampshade. Adjacent two groups of mounting seats are arranged opposite to each other or staggered. One end of the sleeve rod connected to the inner fastener is conical.

[0006] The further improved solutions in the above technical solutions are as follows: 1. In the above solution, the lampshade is provided with adjustment holes corresponding to the springs one by one. A spring seat is threadedly connected in the adjustment hole, and the spring is connected to the spring seat.

[0007] 2. In the above solution, in the same speed reduction assembly, the center lines of all the planet gears form a first cylindrical surface, and the center lines of all the pins form a second cylindrical surface.

[0008] 3. In the above solution, the center lines of the first cylindrical surface, the second cylindrical surface, and the center lines of the input rotating shaft, all the transmission rotating shafts, and the output rotating shaft are collinear.

[0009] 4. In the above solution, along the direction in which the input rotating shaft, a plurality of transmission rotating shafts, and the output rotating shaft are arranged in sequence, the previous rotating shaft extends into the adjacent next rotating shaft and is rotationally matched with the next rotating shaft.

[0010] 5. In the above solution, the transmission rotating shaft and the output rotating shaft are both T-shaped shafts. The T-shaped tails of the transmission rotating shaft and the output rotating shaft both face the lampshade. The pin is connected to the T-shaped head of the corresponding rotating shaft, and sliding bearings are respectively arranged on both sides of the planet gear.

[0011] 6. In the above solution, the sliding bearing is a planar sliding bearing. Planar sliding bearings are provided on both sides of all the planet gears, and the planar sliding bearings are provided with holes for the pins to pass through.

[0012] 7. In the above solution, the card slot is strip-shaped, and its cross-section is a semi-circular shape with a central angle greater than 180°, and the central angle of the cross-section of the card slot 14 is not greater than 200°; or the card slot is spherical crown-shaped, and its cross-section passing through the center of the circle is a semi-circular shape with a central angle greater than 180°, and the central angle of its cross-section passing through the center of the circle is not greater than 200°.

[0013] Due to the application of the above technical solutions, the present invention has the following advantages compared with the prior art: 1. For the surgical shadowless lamp of the present invention, its linkage components rotate under the drive of the same rotating component, so that all the bulbs can be linked. The linkage direction is the direction close to or away from the sleeve rod. Compared with the prior art of adjusting the shadowless lamp lampshade, the adjustment method of the bulbs is accurate and reliable, and there will be no problem of the position change of a single bulb. The centralized lighting effect is better, and the adjustment force is small, and there will be no problem of the overall shaking of the shadowless lamp or changing the overall position of the shadowless lamp; moreover, each group of bulbs is connected together by a connecting rope and a spring. The connection method is simple and the cost is low. At the same time, the position of the bulbs is fixed and adjusted through the spring and the rotating component. The adjustment method is simple and reliable. At the same time, the spring can also adjust the tension of the spring through the spring seat to ensure the service life of the shadowless lamp.

[0014] 2. For the surgical shadowless lamp of the present invention, adjacent rotating shafts are connected through a speed reduction component, so as to reduce the rotation speed of the output rotating shaft, realize the fine adjustment of the position of the bulbs, reduce the influence of human factors on the brightness adjustment, ensure the reliability of the adjustment, and improve the accuracy of the brightness adjustment; moreover, it uses planet gears for multi-stage speed reduction. The speed reduction process is stable and reliable, and the multi-stage transmission has a large friction force, avoiding the reverse rotation of the spring under the action of the tension, and thus avoiding the reverse rotation of the bulbs after adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the surgical shadowless lamp of the present invention; Figure 2 is Figure 1 an enlarged view of part A of Figure 3 is a schematic structural diagram of the connection structure between the mounting seat and the bulb seat of the surgical shadowless lamp of the present invention; Figure 4 is Figure 1 an enlarged view of part B of

[0016] In the above drawings: 10, lamp shade; 11, outer fastener; 12, inner fastener; 13, mounting seat; 14, card slot; 15, through hole; 16, adjusting hole; 17, spring seat; 20, light bulb; 30, lamp socket; 31, clamping block; 40, sleeve rod; 50, rotating assembly; 51, input rotating shaft; 52, transmission rotating shaft; 53, output rotating shaft; 54, planetary gear; 55, pin; 60, linkage assembly; 61, connecting rope; 62, spring. Specific embodiments

[0017] The present patent can be further clearly understood through the following specific embodiments, but they do not limit the present patent.

[0018] Embodiment: An operating shadowless lamp includes: A lamp shade 10, wherein a plurality of groups of light bulbs 20 are arranged along the radial direction of the lamp shade 10, and the light bulbs 20 are rotatably arranged inside the lamp shade 10 through lamp sockets 30; A sleeve rod 40, one end of the sleeve rod 40 is arranged in the middle of the bottom side of the lamp shade 10, and the other end of the sleeve rod 40 extends outward from the inside of the lamp shade 10; And a rotating assembly 50, the rotating assembly 50 passes through the sleeve rod 40 and is rotatably matched with the sleeve rod 40 and the lamp shade 10 respectively, and each group of light bulbs 20 is connected to the rotating assembly 50 through a linkage assembly 60; All the light bulbs 20 rotate synchronously towards or away from the sleeve rod 40 through the rotating assembly 50 and the linkage assembly 60 to achieve brightness adjustment; The linkage assembly 60 includes a connecting rope 61 and a spring 62; among the light bulbs 20 in the same group, adjacent lamp sockets 30 are connected through the connecting rope 61, the lamp socket 30 close to the sleeve rod 40 is connected to the rotating assembly 50 through the connecting rope 61, the lamp socket 30 far from the sleeve rod 40 is connected to the spring 62 through the connecting rope 61, and the spring 62 is connected to the lamp shade 10; The rotating assembly 50 includes an input rotating shaft 51, a plurality of transmission rotating shafts 52, and an output rotating shaft 53 arranged in sequence. The input rotating shaft 51 and the adjacent transmission rotating shaft 52, adjacent transmission rotating shafts 52, and the output rotating shaft 53 and the adjacent transmission rotating shaft 52 are respectively connected through a speed reduction assembly; the input rotating shaft 51 extends into the sleeve rod 40 and is rotatably matched with the sleeve rod 40, and the output rotating shaft 53 extends out of the sleeve rod 40 and is rotatably matched with the lamp shade 10; The speed reduction assembly includes a plurality of planetary gears 54 and a plurality of pins 55; the planetary gears 54 are respectively meshed with the outer sides of the corresponding rotating shafts and the inner side of the sleeve rod 40, and the centers of the planetary gears 54 are connected to the next rotating shaft through the pins 55; The overall shape of the lampshade 10 is arc-shaped. The sleeve rod 40 is arranged at the recessed position of the lampshade 10. The lampshade 10 is hollow and includes an outer fastener 11 and an inner fastener 12. The inner side wall of the outer fastener 11 is provided with mounting seats 13 corresponding to the lamp bulb holders 30 one by one. Each group of mounting seats 13 is arranged along the radial direction of the lampshade 10. Adjacent two groups of mounting seats 13 are arranged oppositely or staggeredly. One end of the sleeve rod 40 connected to the inner fastener 12 is conical.

[0019] The above-mentioned lampshade 10 is provided with adjustment holes 16 corresponding to the springs 62 one by one. A spring seat 17 is threadedly connected in the adjustment hole 16. The spring 62 is connected to the spring seat 17.

[0020] In the same reduction assembly, the center lines of all the planet gears 54 form a first cylindrical surface, and the center lines of all the pins 55 form a second cylindrical surface.

[0021] The center lines of the above-mentioned first cylindrical surface, second cylindrical surface, and the center lines of the input rotating shaft 51, all the transmission rotating shafts 52, and the output rotating shaft 53 are collinear.

[0022] Along the direction in which the input rotating shaft 51, several transmission rotating shafts 52, and the output rotating shaft 53 are arranged in sequence, the previous rotating shaft extends into the adjacent next rotating shaft and is rotationally matched with the next rotating shaft.

[0023] The above-mentioned transmission rotating shafts 52 and the output rotating shaft 53 are both T-shaped shafts. The T-shaped tails of the transmission rotating shafts 52 and the output rotating shaft 53 face the lampshade 10. The pin 55 is connected to the T-shaped head of the corresponding rotating shaft, and sliding bearings are respectively arranged on both sides of the planet gear 54.

[0024] The above-mentioned sliding bearings are flat sliding bearings. Flat sliding bearings are respectively arranged on both sides of all the planet gears 54. The flat sliding bearings are provided with holes for the pins 55 to pass through.

[0025] The above-mentioned card slot 14 is strip-shaped, and its cross-section is a semi-circular shape with a central angle greater than 180°, and the central angle of the cross-section of the card slot 14 is not greater than 200°; or the card slot 14 is spherical crown-shaped, and its cross-section passing through the center is a semi-circular shape with a central angle greater than 180°, and the central angle of its cross-section passing through the center is not greater than 200°.

[0026] In this embodiment, in order to reduce the friction during rotation, flat sliding bearings are respectively arranged on both sides of all the planet gears 54. When encountering the pins 55, the flat sliding bearings are provided with holes for the pins 55 to pass through. Obviously, in other embodiments of the present invention, cylindrical rotating bearings can be sleeved on the outer sides of the T-shaped tails of the input rotating shaft 51 and the transmission rotating shafts 52.

[0027] In this embodiment, in the same speed reduction assembly, the center lines of all the planet gears 54 form a first cylindrical surface, and the center lines of all the pins 55 form a second cylindrical surface. The center lines of the first cylindrical surface, the second cylindrical surface, and the center lines of the input rotating shaft 51, all the transmission rotating shafts 52, and the output rotating shaft 53 are collinear.

[0028] The linkage assembly 60 includes a connecting rope 61 and a spring 62. Among the same group of bulbs 20, adjacent bulb sockets 30 are connected by the connecting rope 61. The bulb socket 30 close to the sleeve rod 40 is connected to the output rotating shaft 53 by the connecting rope 61, and the bulb socket 30 far from the sleeve rod 40 is connected to the spring 62 by the connecting rope 61. At the same time, the spring 62 is connected to the lamp shade 10. Under normal circumstances, the spring 62 is in a stretched state and has a certain tension, which provides tension for the connecting rope 61. At the same time, it can also fix the position of the bulb socket 30.

[0029] When the input rotating shaft 51 rotates, it will drive the output rotating shaft 53 to rotate, so as to wind the connecting rope 61 of each group of bulbs 20 close to the sleeve rod 40 onto the output rotating shaft 53, thereby driving the bulb socket 30 to rotate in the direction close to the sleeve rod 40; when the input rotating shaft 51 rotates in the reverse direction, the bulb socket 30 will straighten the wound connecting rope 61 under the tension of the spring 62 and drive the bulb socket 30 to rotate in the direction away from the sleeve rod 40, so as to realize the linkage adjustment of the positions of all the bulbs 20 to enhance or weaken the light at the surgical site.

[0030] Since the spring 62 is in a stretched state under normal circumstances, the tension of the spring 62 will weaken over time. In order to adjust the tension of the spring 62, in this embodiment, the side wall of the lamp shade 10 is provided with adjustment holes 16 corresponding to the spring 62 one by one. A spring seat 17 is connected to the adjustment hole 16 through internal threads, and the spring 62 is fixedly connected to the corresponding spring seat 17. After the tension of the spring 62 weakens, the tension of the spring 62 can be adjusted by screwing the spring seat 17 with an auxiliary tool such as a screwdriver. In order to cooperate with the tension adjustment of the spring 62, in other embodiments of the present invention, among the same group of bulbs 20, one of the bulbs 20 is provided with a marking line, and the lamp shade 10 is provided with an indication line corresponding to the marking line at the corresponding position to ensure the accuracy of the adjustment.

[0031] In order to facilitate the regular replacement of the spring 62 and the installation of the bulb socket 30, in this embodiment, the inner fastener 12 and the outer fastener 11 of the lamp shade 10 are bolted.

[0032] The bulb 20 of this embodiment rotates under the drive of the same rotating assembly 50, enabling all bulbs 20 to be linked. The linkage direction is towards or away from the sleeve rod 40. Compared with the existing method of adjusting the shadowless lamp shade, the adjustment method of the bulb 20 is precise and reliable, and there will be no problem of the position change of a single bulb 20. The centralized lighting effect is better. Moreover, after the rotation speed is adjusted by the speed reduction assembly, the rotation speed of the output rotating shaft 53 is small, realizing fine adjustment of the position of the bulb 20, reducing the influence of human factors on brightness adjustment, ensuring the reliability of adjustment, improving the accuracy of brightness adjustment, and only by rotating the input rotating shaft 51 can the adjustment be carried out. The adjustment force is small, and there will be no problem of the overall shaking of the shadowless lamp or changing the overall position of the shadowless lamp.

[0033] The above mounting seat 13 is provided with a clamping groove 14; one end of the bulb socket 30 is provided with a clamping block 31. The bulb 20 is connected to the other end of the bulb socket 30. The clamping block 31 is clamped with the clamping groove 14, and the bulb socket 30 rotates along the direction close to or away from the sleeve rod 40. The inner fastener 12 is provided with through holes 15 corresponding to the bulbs 20 one by one. The bulbs 20 pass through the through holes 15 and there is a gap between the bulbs 20 and the side surfaces of the through holes 15.

[0034] With the above surgical shadowless lamp, its linkage assembly rotates under the drive of the same rotating assembly, enabling all bulbs to be linked. The linkage direction is towards or away from the sleeve rod. Compared with the existing method of adjusting the shadowless lamp shade, the adjustment method of the bulb is precise and reliable, and there will be no problem of the position change of a single bulb. The centralized lighting effect is better, and the adjustment force is small, and there will be no problem of the overall shaking of the shadowless lamp or changing the overall position of the shadowless lamp. Also, each group of bulbs is connected together by a connecting rope and a spring. The connection method is simple and the cost is low. At the same time, the position of the bulb is fixed and adjusted through the spring and the rotating assembly. The adjustment method is simple and reliable. At the same time, the spring can also adjust the tension of the spring through the spring seat to ensure the service life of the shadowless lamp. Adjacent rotating shafts are connected through a speed reduction assembly, thereby reducing the rotation speed of the output rotating shaft, realizing fine adjustment of the position of the bulb, reducing the influence of human factors on brightness adjustment, ensuring the reliability of adjustment, and improving the accuracy of brightness adjustment. Also, it uses planetary gears for multi-stage speed reduction. The speed reduction process is stable and reliable, and the multi-stage transmission has a large frictional force, avoiding the reverse rotation of the spring under the action of the tension, thereby avoiding the reverse rotation of the bulb after adjustment.

[0035] The above embodiments are only used to illustrate the technical concept and features of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly. It is not intended to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. An operating shadowless lamp, characterized in that, Comprising: A lamp shade (10), the lamp shade (10) is provided with multiple groups of bulbs (20) along the radial direction, and the bulbs (20) are rotatably arranged on the inner side of the lamp shade (10) through lamp bulb sockets (30); A sleeve rod (40), one end of the sleeve rod (40) is arranged at the middle part of the bottom side of the lamp shade (10), and the other end of the sleeve rod (40) extends outward from the inner side of the lamp shade (10); And a rotating assembly (50), the rotating assembly (50) passes through the sleeve rod (40) and is rotatably matched with the sleeve rod (40) and the lamp shade (10) respectively, and each group of the bulbs (20) is connected to the rotating assembly (50) through a linkage assembly (60); All the bulbs (20) rotate synchronously towards or away from the sleeve rod (40) through the rotating assembly (50) and the linkage assembly (60) to realize the adjustment of brightness; The linkage assembly (60) includes a connecting rope (61) and a spring (62); among the bulbs (20) in the same group, adjacent lamp bulb sockets (30) are connected through the connecting rope (61), the lamp bulb socket (30) close to the sleeve rod (40) is connected to the rotating assembly (50) through the connecting rope (61), the lamp bulb socket (30) far from the sleeve rod (40) is connected to the spring (62) through the connecting rope (61), and the spring (62) is connected to the lamp shade (10); The rotating assembly (50) includes an input rotating shaft (51), a plurality of transmission rotating shafts (52), and an output rotating shaft (53) arranged in sequence. Between the input rotating shaft (51) and the adjacent transmission rotating shaft (52), between adjacent transmission rotating shafts (52), and between the output rotating shaft (53) and the adjacent transmission rotating shaft (52), they are respectively connected through a speed reduction assembly; the input rotating shaft (51) extends into the sleeve rod (40) and is rotatably matched with the sleeve rod (40), and the output rotating shaft (53) extends out of the sleeve rod (40) and is rotatably matched with the lamp shade (10); The speed reduction assembly includes a plurality of planetary gears (54) and a plurality of pins (55); the planetary gears (54) are respectively meshed with the outer sides of the corresponding rotating shafts and the inner side of the sleeve rod (40), and the centers of the planetary gears (54) are connected to the next rotating shaft through the pins (55); The whole of the lamp shade (10) is arc-shaped, the sleeve rod (40) is arranged at the sunken position of the lamp shade 10, the lamp shade (10) is hollow, and it includes an outer fastener (11) and an inner fastener (12). The inner side wall of the outer fastener (11) is provided with mounting seats (13) corresponding to the lamp bulb sockets (30) one by one. Each group of mounting seats (13) is arranged along the radial direction of the lamp shade (10), and adjacent two groups of mounting seats (13) are arranged oppositely or staggeredly. One end of the sleeve rod (40) connected to the inner fastener (12) is conical.

2. The surgical shadowless lamp according to claim 1, characterized in that, The lamp shade (10) is provided with adjustment holes (16) corresponding to the springs (62) one by one. A spring seat (17) is threadedly connected in the adjustment hole (16), and the spring (62) is connected to the spring seat (17).

3. The surgical shadowless lamp according to claim 1, characterized in that, In the same deceleration assembly, the center lines of all the planet gears (54) form a first cylindrical surface, and the center lines of all the pins (55) form a second cylindrical surface.

4. The shadowless operating lamp according to claim 3, wherein, The center lines of the first cylindrical surface and the second cylindrical surface, as well as the center lines of the input rotating shaft (51), all the transmission rotating shafts (52), and the output rotating shaft (53) are collinear.

5. The surgical shadowless lamp according to claim 1, wherein Along the direction in which the input rotating shaft (51), several transmission rotating shafts (52), and the output rotating shaft (53) are arranged in sequence, the previous rotating shaft extends into the adjacent next rotating shaft and is rotationally matched with the next rotating shaft.

6. The surgical shadowless lamp according to claim 1, characterized in that, The transmission rotating shaft (52) and the output rotating shaft (53) are both T-shaped shafts. The T-shaped tails of the transmission rotating shaft (52) and the output rotating shaft (53) face the lamp shade (10). The pin (55) is connected to the T-shaped head of the corresponding rotating shaft, and sliding bearings are respectively arranged on both sides of the planet gear (54).

7. The surgical shadowless lamp according to claim 6, wherein The sliding bearing is a planar sliding bearing. Planar sliding bearings are respectively arranged on both sides of all the planet gears (54), and the planar sliding bearing is provided with a hole for the pin (55) to pass through.

8. The shadowless operating lamp according to claim 6, characterized in that, The card slot (14) is strip-shaped, and its cross-section is a semi-circular shape with a central angle greater than 180° and not greater than 200°; or the card slot (14) is spherical-crowned, and its cross-section passing through the center is a semi-circular shape with a central angle greater than 180° and not greater than 200°.

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