Method for constructing multi-angle light and shadow landscape of homestay
By setting up a modular light and shadow unit on the light and shadow display wall of the homestay, and adjusting the angle of the light and shadow unit in real time using sunlight or simulated light incident trajectory, the problem of the existing homestay landscape lacking dynamic light and shadow effects is solved, and the dynamic display of multi-angle light and shadow landscape is realized, enhancing the atmosphere and tourist experience.
Patent Information
- Application Number
- CN202510365607.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2025-06-06
AI Technical Summary
The existing homestay landscape construction lacks dynamic light and shadow effects, resulting in a single atmosphere and a lack of multi-angle light and shadow display.
By establishing a light and shadow display wall and setting up a modular and adjustable angle light and shadow unit on it, the angle of the light and shadow unit is adjusted in real time by using sunlight or simulated light incident trajectory, reflecting the light to the viewing area, forming a dynamic light and shadow display effect.
The dynamic display of multi-angle light and shadow landscape is realized, which enhances the light and shadow atmosphere of the homestay, attracts tourists and enhances the tourist experience.
Smart Images

Figure CN120100222A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of homestay landscape, and particularly relates to a method for constructing a multi-angle light and shadow landscape of a homestay. Background Art
[0002] The landscape of a B&B is not only a reflection of the B&B's external beauty, but also one of the key factors in attracting tourists. By designing the landscape, the B&B can create a unique atmosphere and style, so that tourists can enjoy the local culture and natural scenery while enjoying their stay.
[0003] The existing technology of constructing homestay landscapes is generally static, and the desired atmosphere is constructed through direct color matching. This landscape color construction method lacks light and shadow display and lacks the atmosphere effect of dynamic light and shadow. Summary of the invention
[0004] The purpose of the present invention is to provide a method for constructing a multi-angle light and shadow landscape for a homestay in order to solve the above-mentioned problem.
[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:
[0006] A method for constructing a multi-angle light and shadow landscape of a homestay, comprising the following steps:
[0007] Establish a light and shadow display wall, establish a mobile light and shadow landscape, and set up modular and angle-adjustable light and shadow units on the light and shadow display wall;
[0008] Based on the first visual camera, the incident trajectory of the sun / light and shadow landscape is obtained in real time, and based on the second visual camera, the position of tourists in the viewing area is obtained in real time, and tourists are randomly locked and switched one by one, and the angle of each light and shadow unit is adjusted so that the light and shadow unit reflects sunlight / simulated light to the position of the currently locked tourist.
[0009] As a further optimization scheme of the present invention, the light and shadow display wall includes a base wall and a surface wall, wherein the light and shadow unit is arranged on the surface wall. This scheme sets the base wall and the surface wall, uses the base wall as the base surface, and the surface wall as the display surface, and sets a fence between the two, so that the cavity formed in the middle is used to set the control structure of the light and shadow unit.
[0010] As a further optimization scheme of the present invention, a plurality of ball grooves are provided on the surface of the surface wall, through holes are provided on both sides of the ball grooves, and the light and shadow unit includes a damping ball embedded in the ball groove, one end of the damping ball extends from the through hole and is provided with a reflective plate, and the other end extends from another through hole and is provided with a spherical plate, and a plurality of longitudinally arranged driving components and a plurality of transversely arranged access components are also provided between the base wall and the surface wall, and the access components are used to connect the transverse light and shadow units to the driving components to control the angle. In this scheme, the damping ball is fixed in the ball groove, and the hemispherical plate is driven to rotate along the center of the damping ball, so that the reflective plate can rotate at multiple angles. In addition, a light and shadow unit can be driven at a fixed point in the form of array coordinates through the access components and the driving components, without the need to set two-axis drives for the light and shadow units one by one.
[0011] As a further optimization scheme of the present invention, a refractive element is further provided on the surface of the reflective plate. The dispersion effect of light and shadow can be increased by providing the refractive element. The refractive element can be provided with triangular protrusions on the surface to improve the color richness of the light and shadow display.
[0012] As a further optimization scheme of the present invention, the driving component includes a shaft rod that can be raised and lowered and rotated and is arranged on the base wall. The access component includes a crossbeam, a sliding sleeve arranged outside the crossbeam, and contact rollers arranged on both sides of the sliding sleeve. The two contact rollers are connected by transmission, wherein the contact rollers are moved to both sides by a driving device to press the spherical plate and the shaft rod. This scheme further sets up a driving component and a access component. Two movable contact rollers are arranged on the access component. When the two contact rollers are opened outward, one contacts the spherical plate and the other contacts the shaft rod. When the shaft rod is raised or lowered, the contact roller rotates, driving the other contact roller to rotate, and the other contact roller drives the spherical plate to rotate up and down. When the shaft rod rotates, it drives the contact roller and the sliding sleeve to slide along the crossbeam, and the other contact roller drives the spherical plate to rotate laterally.
[0013] As a further optimization scheme of the present invention, the sliding sleeve is provided with extension parts extending to both sides, and the extension parts are provided with sliding grooves. The shaft portion of the contact roller is provided with a sliding member that slides along the sliding groove, and the sliding member is provided with a sliding rod for pushing the contact roller to both sides. This scheme further provides a sliding structure for the contact roller, and the shaft portion thereof is provided with a sliding member, and the above-mentioned purpose is achieved by sliding in the sliding groove.
[0014] As a further optimization scheme of the present invention, the driving device includes a rotating shaft rotatably arranged in the crossbeam, a motor arranged at the end of the crossbeam for driving the rotating shaft, and a plurality of balls arranged on the surface of the rotating shaft. When the rotating shaft rotates, the balls contact the sliding rod to push out the contact roller. A transverse groove for accommodating the passage of the rotating shaft is provided on the side surface of the crossbeam. A spring for making the contact roller slide toward the center is also provided on the rotating shaft. The present scheme further provides a specific structure for driving the two contact rollers to be pushed outward and retracted inward. By arranging two balls on the rotating shaft as protrusions, when the balls rotate and abut against the sliding rod, the contact roller is pushed out. In the process of the sliding sleeve sliding along the crossbeam, the contact surface between the sliding rod and the balls also rolls.
[0015] As a further optimization scheme of the present invention, the two contact rollers are connected by a transmission belt, a synchronous wheel is arranged at the end of the contact roller, the transmission belt is arranged on the two synchronous wheels, and a transition wheel is also arranged on the sliding sleeve for supporting the transition when the transmission belt passes over the sliding sleeve. This scheme proposes a structure for mutual transmission between the two contact rollers. Since the outward expansion and contraction range between the two contact rollers is small, a transmission belt is arranged for transmission. The edges of the synchronous wheel and the transition wheel can be arranged with sufficient width to prevent the transmission belt from loosening and falling off when the contact roller moves toward the center.
[0016] As a further optimization scheme of the present invention, a lifting drive unit is arranged on the base wall, a rotating drive unit is arranged at the output end of the lifting drive unit, the shaft rod is arranged at the output end of the lifting drive unit and is drivingly connected to the rotating drive unit. This scheme specifically proposes a shaft rod lifting method, which is performed by setting a lifting drive unit for lifting and lowering, and setting a rotating drive unit to drive the shaft rod to rotate.
[0017] As a further optimization scheme of the present invention, the surface of the shaft rod is provided with stripes in the radial direction, the surface of the contact roller in contact with the shaft rod is provided with flanges that are engaged with the stripes, teeth are provided between the flanges, and the surface of the stripes is provided with raised portions corresponding to the teeth. In order to prevent the lack of sufficient driving force between the shaft rod and the contact roller so that the sleeve slides along the cross beam and drives the spherical plate to rotate, stripes and flanges are provided in this scheme, and the drive is achieved through a hard connection.
[0018] The beneficial effects of the present invention are:
[0019] The present invention establishes a light and shadow display wall, and arranges modular multi-angle adjustable light and shadow units on the display wall. By obtaining the incident trajectory of sunlight / simulated light, and then controlling the light and shadow units to adjust the angle, the light is reflected to the viewing area, and each light and shadow unit is continuously switched to form a dynamic light and shadow display effect with a strong light and shadow atmosphere. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0021] Figure 2 It is the front view of the wall of the present invention;
[0022] Figure 3 The present invention Figure 1 A magnified view of the structure of part A;
[0023] Figure 4 The present invention Figure 3 Middle BB view;
[0024] Figure 5 The present invention Figure 3 A magnified view of the access component;
[0025] Figure 6 The present invention Figure 1 A magnified view of the structure of part C in the middle;
[0026] Figure 7 The present invention Figure 3 A view of the second embodiment from perspective;
[0027] In the figure: 1, base wall; 2, face wall; 201, ball groove; 3, light and shadow unit; 31, damping ball; 32, reflector; 33, refraction member; 34, spherical plate; 4, access assembly; 41, crossbeam; 42, sleeve; 43, rotating shaft; 44, ball; 45, extension; 46, slide groove; 47, sliding member; 48, contact roller; 49, cross groove; 410, slide bar; 411, spring; 412, synchronous wheel; 413, transition wheel; 414, transmission belt; 415, flange; 416, motor; 417, tooth groove; 5, drive assembly; 51, lifting drive unit; 52, rotating drive unit; 53, shaft; 54, stripes; 55, raised part; 6, light and shadow landscape; 7, viewing area; 8, physical landscape. DETAILED DESCRIPTION
[0028] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.
[0029] Example 1
[0030] like Figure 1-7 As shown, a method for constructing a multi-angle light and shadow landscape of a homestay includes the following steps:
[0031] Establish a light and shadow display wall, establish a mobile light and shadow landscape, and set modular and angle-adjustable light and shadow units 3 on the light and shadow display wall;
[0032] Based on the first visual camera, the incident trajectory of the sun / light and shadow landscape is obtained in real time, and based on the second visual camera, the position of tourists in the viewing area is obtained in real time, and tourists are randomly locked and switched one by one, and the angle of each light and shadow unit 3 is adjusted so that the light and shadow unit 3 reflects sunlight / simulated light to the position of the currently locked tourist.
[0033] This solution establishes a light and shadow display wall, and sets modular multi-angle adjustable light and shadow units 3 on the display wall. By obtaining the incident trajectory of sunlight / simulated light, and then controlling the light and shadow units 3 to adjust the angle, the light is reflected to the viewing area 7, and each light and shadow unit 3 is continuously switched to form a dynamic light and shadow display effect with a strong light and shadow atmosphere.
[0034] Sunlight is used on sunny days, while the light and shadow landscape 6 is used at night. The light and shadow landscape 6 can wander on the water surface, and the light and shadow landscape 6 emits landscape lights. Then, by adjusting the modular light and shadow unit 3, the angle of the light and shadow unit 3 is adjusted to a suitable position for reflection, and the light and shadow landscape 6 is reflected to the viewing area 7. The light and shadow landscape 6 is the main part, and the reflected sub-landscapes are auxiliary, so as to create a landscape image of the main and secondary combination of the light and shadow landscape 3.
[0035] Alternatively, other landscape projection methods may be used, and a plurality of split physical landscapes 8 may be set up at appropriate locations, and the physical landscapes 8 may be reflected to the viewing area 7 through the light and shadow units 3. When reflecting the physical landscapes, the split physical landscapes 8 may be projected to the viewing area 7 by controlling the angles of the plurality of light and shadow units 3 to form an array of physical landscapes 8. For example, the physical landscapes 8 may be set as strokes, letters, or modular individual puzzles, while the array of physical landscapes 8 may be projected into characters, words, or an entire puzzle.
[0036] The light and shadow display wall includes a base wall 1 and a surface wall 2, wherein the light and shadow unit 3 is arranged on the surface wall 2. In this scheme, the base wall 1 and the surface wall 2 are arranged, the base wall 1 is used as the base surface, and the surface wall 2 is used as the display surface, and a fence is arranged between the two, so that the cavity formed in the middle is used to set the control structure of the light and shadow unit 3.
[0037] A plurality of ball grooves 201 are provided on the surface of the face wall 2, and through holes are provided on both sides of the ball grooves 201. The light and shadow unit 3 includes a damping ball 31 embedded in the ball groove 201, one end of the damping ball 31 extends out of the through hole and is provided with a reflector 32, and the other end extends out of another through hole and is provided with a hemispherical plate 34. A plurality of longitudinally arranged driving components 5 and a plurality of transversely arranged access components 4 are also provided between the base wall 1 and the face wall 2. The access components 4 are used to connect the transverse light and shadow unit 3 to the driving components 5 to control the angle. In this solution, the damping ball 31 is arranged in the ball groove 201, and the damping effect is used to control the light and shadow unit 3. The rows are fixed, and the hemispherical plate 34 is driven to rotate along the center of the damping ball 31. The center of the spherical plate 34 is the same as that of the damping ball 31, so that the reflector 32 can rotate at multiple angles. In addition, through the access component 4 and the drive component 5, a certain light and shadow unit 3 can be driven at a fixed point in the form of array coordinates, without the need to set two-axis drives for the light and shadow units 3 one by one. Under this scheme, the drive component 5 only needs to be set in one row and the access component 4 only needs to be set in one column, so that a certain light and shadow unit 3 can be driven to rotate on two axes individually. Compared with setting two axial drives for each light and shadow unit 3, the difficulty of equipment installation and wiring is greatly reduced.
[0038] A refraction member 33 is also provided on the surface of the reflective plate 32. The dispersion effect of light and shadow can be increased by providing the refraction member 33. The refraction member 33 can be provided with triangular protrusions on the surface to improve the color richness of the light and shadow display. The refraction member 33 can be partially provided.
[0039] The driving assembly 5 includes a shaft 53 which is arranged on the base wall 1 and can be raised and lowered and rotated. The access assembly 4 includes a crossbeam 41, a sliding sleeve 42 which is arranged outside the crossbeam 41, and contact rollers 48 which are arranged on both sides of the sliding sleeve 42. The two contact rollers 48 are connected by transmission, wherein the contact rollers 48 are moved to both sides by a driving device to press the spherical plate 34 and the shaft 53. The present scheme further provides a driving assembly 5 and a access assembly 4. Two movable contact rollers 48 are arranged on the access assembly 4. When the two contact rollers 48 are opened outward, one contacts the spherical plate 34 and the other contacts the shaft 53. When the shaft 53 is raised or lowered, the contact roller 48 rotates, driving the other contact roller 48 to rotate, and the other contact roller 48 drives the spherical plate 34 to rotate up and down. When the shaft 53 rotates, it drives the contact roller 48 and the sliding sleeve 42 to slide along the crossbeam 41, and the other contact roller 48 drives the spherical plate 34 to rotate laterally.
[0040] The sliding sleeve 42 is provided with extension parts 45 extending to both sides, and the extension parts 45 are provided with slide grooves 46. The shaft of the contact roller 48 is provided with a sliding member 47 that slides along the slide grooves 46. The sliding member 47 is provided with a sliding rod 410 for pushing the contact roller 48 to both sides. The present scheme further provides a sliding structure for the contact roller 48, and a U-shaped sliding member 47 is provided on the shaft thereof. The above purpose is achieved by sliding in the slide grooves 46, and a sliding rod 410 is provided in the middle part of the sliding member 47 to extend into the cross beam 41 to facilitate being pushed out.
[0041] The driving device includes a rotating shaft 43 rotatably arranged in the cross beam 41, a motor 416 arranged at the end of the cross beam 41 for driving the rotating shaft 43, and a plurality of balls 44 arranged on the surface of the rotating shaft 43. When the rotating shaft 43 rotates, the balls 44 contact the slide bar 410 to push out the contact roller 48. The side surface of the cross beam 41 is provided with a transverse groove 49 for accommodating the rotating shaft 43 to pass through. The rotating shaft 43 is also provided with a spring 411 for making the contact roller 48 slide toward the center. The present scheme further provides a method for driving the two contact rollers 48 to push outward. As well as the specific structure of inward folding, two balls 44 are arranged on the rotating shaft 43 as protrusions. When the balls 44 are about to rotate with the rotating shaft 43 and abut against the end of the sliding rod 410, the sliding rod 410 is pushed outward, and the sliding rod 410 pushes the contact roller 48 out through the sliding member 47. The purpose of arranging the balls 44 is: in the process of the sliding sleeve 42 sliding along the cross beam 41, the contact surface between the end of the sliding rod 410 and the ball 44 also rolls, and the transverse groove 49 is used to accommodate the axial sliding of the sliding rod 410 along the cross beam 41.
[0042] The two contact rollers 48 are connected by a transmission belt 414. A synchronous wheel 412 is provided at the end of the contact roller 48. The transmission belt 414 is provided on the two synchronous wheels 412. A transition wheel 413 is also provided on the sleeve 42 for supporting the transition when the transmission belt 414 passes over the sleeve 42. This scheme proposes a structure for mutual transmission between the two contact rollers 48. Since the outward expansion and contraction range between the two contact rollers 38 is small, a transmission belt 414 is provided for transmission. The edges of the synchronous wheel 412 and the transition wheel 413 can be provided with sufficient width to prevent the transmission belt 414 from loosening and falling off when the contact roller 48 moves toward the center.
[0043] A lifting drive unit 51 is provided on the base wall 1, and a rotating drive unit 52 is provided at the output end of the lifting drive unit 51. The shaft rod 53 is provided at the output end of the lifting drive unit 51 and is drivingly connected to the rotating drive unit 52. This scheme specifically proposes a lifting and rotating method of the shaft rod 53. The lifting drive unit 51 is provided for lifting, and the rotating drive unit 52 is provided to drive the shaft rod 53 to rotate. A reinforcing sleeve can be provided on the base wall 1 to support the middle section of the shaft rod 53.
[0044] Stripes 54 are radially arranged on the surface of the shaft 53, and a flange 415 engaged with the stripes 54 is arranged on the surface of the contact roller 48 in contact with the shaft 53, and teeth 417 are arranged between the flanges 415. A protrusion 55 corresponding to the teeth 417 is arranged on the surface of the stripe 54. In order to prevent the lack of sufficient driving force between the shaft 53 and the contact roller 48 to cause the sliding sleeve 42 to slide along the beam 41 and drive the spherical plate 34 to rotate, the present scheme provides stripes 54 and flanges 415, which are driven by hard connection, and a protrusion 55 is arranged on the outside of the stripe 54, and a teeth 417 is arranged on the gap of the flange 415 to facilitate the rotation of the contact roller.
[0045] The specific implementation method is as follows: when it is necessary to adjust the angle of a certain light and shadow unit 3 at a fixed point, the lateral access component 4 corresponding to the light and shadow unit 3 is operated, and the motor 416 drives the rotating shaft 43 to rotate, so that the ball 44 pushes the contact roller 48 to both sides, respectively pressing the shaft 53 and the spherical plate 34. It should be noted that a whole row of light and shadow units 3 in the horizontal direction are pressed, and the driving component 5 in the longitudinal direction of the light and shadow unit 3 that needs to be adjusted drives the contact roller 48 to rotate by driving the shaft 53 to rise and fall, and the contact roller 48 drives the opposite contact roller through the transmission belt 414. 48 rotates, and the opposite contact roller 48 drives the spherical plate 34 to rotate up and down. When the shaft 53 rotates, the contact roller 48 is driven by the stripes 54, and then the sliding sleeve 42 is driven to slide along the cross beam 41. The sliding sleeve 42 and the cross beam 41 can also be fixed by setting a damping surface. The opposite contact roller 48 drives the spherical center plate 34 to rotate horizontally, so that the light and shadow unit 3 can be adjusted to any angle within the range. After the shaft 43 is reset, the spring 411 enables the slide rod 410 to drive the contact roller 48 to reset and break away from the contact with the shaft 53 and the spherical plate 34.
[0046] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.
Claims
1. A method for constructing a multi-angle light and shadow landscape for a homestay, characterized by: The steps include: Establishing a light and shadow display wall and a movable light and shadow landscape, and setting modular and angle-adjustable light and shadow units (3) on the light and shadow display wall; The incident trajectory of the sun / light and shadow landscape is acquired in real time based on the first visual camera, the position of tourists in the viewing area is acquired in real time based on the second visual camera, and the tourists are randomly locked and switched one by one, and the angle of each light and shadow unit (3) is adjusted so that the light and shadow unit (3) reflects the sunlight / simulated light to the position of the currently locked tourist.
2. A method for constructing a multi-angle light and shadow landscape of a homestay according to claim 1, characterized in that: The light and shadow display wall comprises a base wall (1) and a surface wall (2), wherein the light and shadow unit (3) is arranged on the surface wall (2).
3. A method for constructing a multi-angle light and shadow landscape of a homestay according to claim 2, characterized in that: The surface of the face wall (2) is provided with a plurality of ball grooves (201), and through holes are provided on both sides of the ball grooves (201). The light and shadow unit (3) comprises a damping ball (31) embedded in the ball groove (201), one end of the damping ball (31) extends out of the through hole and is provided with a reflective plate (32), and the other end extends out of another through hole and is provided with a hemispherical plate (34). A plurality of longitudinally arranged driving components (5) and a plurality of transversely arranged access components (4) are also provided between the base wall (1) and the face wall (2), and the access components (4) are used to connect the transverse light and shadow unit (3) to the driving component (5) to control the angle.
4. A method for constructing a multi-angle light and shadow landscape of a homestay according to claim 3, characterized in that: A refraction element (33) is also provided on the surface of the reflection plate (32).
5. The method for constructing a multi-angle light and shadow landscape of a homestay according to claim 3, characterized in that: The driving assembly (5) comprises a shaft (53) which is arranged on the base wall (1) and can be lifted and rotated. The access assembly (4) comprises a crossbeam (41), a sliding sleeve (42) which is arranged outside the crossbeam (41), and contact rollers (48) arranged on both sides of the sliding sleeve (42). The two contact rollers (48) are connected in a transmission manner, wherein the contact rollers (48) are moved to both sides by a driving device to press the spherical plate (34) and the shaft (53).
6. A method for constructing a multi-angle light and shadow landscape of a homestay according to claim 5, characterized in that: The sliding sleeve (42) is provided with an extension portion (45) extending to both sides, and the extension portion (45) is provided with a slide groove (46). The shaft portion of the contact roller (48) is provided with a sliding member (47) sliding along the slide groove (46), and the sliding member (47) is provided with a sliding rod (410) for pushing the contact roller (48) to both sides.
7. The method for constructing a multi-angle light and shadow landscape of a homestay according to claim 6, characterized in that: The driving device comprises a rotating shaft (43) rotatably arranged inside a cross beam (41), a motor (416) arranged at the end of the cross beam (41) for driving the rotating shaft (43), and a plurality of balls (44) arranged on the surface of the rotating shaft (43). When the rotating shaft (43) rotates, the balls (44) contact a sliding rod (410) to push out a contact roller (48). A transverse groove (49) for accommodating the rotating shaft (43) is provided on the side surface of the cross beam (41). A spring (411) for causing the contact roller (48) to slide toward the center is also provided on the rotating shaft (43).
8. The method for constructing a multi-angle light and shadow landscape of a homestay according to claim 5, characterized in that: The two contact rollers (48) are connected to each other via a transmission belt (414); a synchronous wheel (412) is arranged at the end of the contact roller (48); the transmission belt (414) is arranged on the two synchronous wheels (412); and a transition wheel (413) is also arranged on the sliding sleeve (42) for supporting the transition when the transmission belt (414) passes over the sliding sleeve (42).
9. The method for constructing a multi-angle light and shadow landscape of a homestay according to claim 5, characterized in that: The base wall (1) is provided with a lifting drive unit (51), the output end of the lifting drive unit (51) is provided with a rotating drive unit (52), and the shaft (53) is provided at the output end of the lifting drive unit (51) and is drivingly connected to the rotating drive unit (52).
10. A method for constructing a multi-angle light and shadow landscape of a homestay according to claim 9, characterized in that: The surface of the shaft (53) is provided with stripes (54) in the radial direction, the surface of the contact roller (48) in contact with the shaft (53) is provided with a flange (415) engaged with the stripes (54), teeth (417) are provided between the flanges (415), and the surface of the stripes (54) is provided with a protrusion (55) corresponding to the teeth (417).