Light shading system for lamp

Abstract

The invention discloses a light shading system for a lamp, and belongs to the technical field of light shading of lamps, light shading and filtering functions are integrated on a first light shading cover and a second light shading cover through an arranged light shading mechanism, and switching of the light shading and filtering functions is achieved by rotating the first light shading cover and the second light shading cover. According to the utility model, the separated design of the internal light shielding cover and the external light filtering cover in the traditional scheme is avoided, more efficient space utilization is realized, the fixing problem of the external light filtering cover does not need to be considered, the loosening risk caused by frequent disassembly is reduced, and the stability of long-term use is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of lamp shading technology, and in particular to a lamp shading system. Background Art

[0002] Light shading devices are key components for controlling light distribution, reducing glare, and improving lighting comfort. They physically block light diffusion, avoid light pollution, reduce direct glare, and make light softer. In scenes such as filming and commercial displays, light shading devices can shape light and shadow effects, achieve light layering, and create a sense of depth.

[0003] When the lamp is turned off, depending on the lamp type, there is a need to prevent external natural light from entering the lamp. This is because the specific wavelengths in natural light can easily excite the optical components inside the lamp, such as glass slides, crystals and other important components, causing unexpected changes in the light path or component aging. In addition, the ultraviolet rays in natural light can also accelerate the aging of the light shield, causing problems such as discoloration and cracking, which in turn leads to a decrease in its ability to control light distribution.

[0004] In the existing protection method using physical isolation design, a removable filter plate is usually installed on the outside of the lamp. When the lamp is turned off, the filter plate is installed at the opening to reduce the entry of external light sources. However, in actual use, the external filter plate requires additional installation brackets or clips, which increases the overall volume of the lamp and destroys the integrity of the appearance. There is also a risk of accessories being lost or damaged, and the operation is relatively cumbersome. In addition, when the lamp uses a heat light source, it is easy to accidentally contact the high-temperature lamp body during the removal of the filter plate, posing certain safety hazards. Summary of the Invention

[0005] The purpose of the present invention is to provide a light shielding system for a lamp in order to solve the problem that when a detachable filter plate is installed on the outside of the lamp to protect the components and light shield inside the lamp, the operation of installing and removing the filter plate is relatively cumbersome.

[0006] In order to achieve the above objectives, the present invention adopts the following technologies: a shading system for a lamp:

[0007] The lamp body includes a shell, a light-transmitting glass with a circular light-transmitting area in the middle is mounted on the shell, a light bulb generating a light source is disposed inside the shell, a light-shielding mechanism is disposed inside the shell for preventing an external light source from directly irradiating the light bulb through the light-transmitting glass, the light-shielding mechanism includes a spherical first light shield rotatably disposed within the shell, a first through hole having the same outer diameter as the light bulb is formed on a surface of the first light shield, a second light shield having a rotation direction opposite to that of the first light shield is disposed within the first light shield, a second through hole having the same diameter as the first through hole is formed on the second light shield, and a first light outlet is formed on both the first light shield and the second light shield, the first light outlet having the same outer diameter as the circular light-transmitting area of ​​the light-transmitting glass;

[0008] When the first through hole and the second through hole are attached to the light bulb, a hemispherical light shield is formed with the first light outlet facing the transparent glass. The light source is blocked and restricted by the light shield and then emitted through the light bulb to form a standard light beam.

[0009] The first light outlets on the first and second light shields face the bulb, and when the first and second through holes coincide with the axis of the transparent glass, the first and second light shields form a hemispherical filter that covers the bulb and blocks natural light.

[0010] As a further description of the shading system for a lamp of the above technology:

[0011] The first light shield and the second light shield are rotatably arranged in the housing through an adjustment mechanism, the adjustment mechanism includes a mounting cavity opened in the top of the housing and a knob rotatably embedded in the mounting cavity, the knob is connected to the first light shield through a first engaging portion provided at the end thereof, and a first bevel gear is fixedly installed inside the knob;

[0012] A rotating rod is provided through the middle of the rotating knob and the first engaging portion, a second bevel gear is provided on the top of the rotating rod and the bottom of the rotating rod is connected to the second light shield through the second engaging portion;

[0013] A rotating shaft is rotatably provided on the installation cavity, an open groove for the rotating shaft to pass through is provided on the surface of the rotating knob, and a steering gear meshing with the first bevel gear and the second bevel gear is installed at the end of the rotating shaft.

[0014] As a further description of the shading system for a lamp of the above technology:

[0015] The inner wall of the installation cavity is provided with an annular guide rail, and the surface of the knob is provided with an engaging groove which is rotatably engaged with the guide rail.

[0016] As a further description of the shading system for a lamp of the above technology:

[0017] The mounting cavity is provided with a locking mechanism for locking the rotating shaft, the locking mechanism comprising a rotating cavity provided on the mounting cavity, a rotating member connected to the rotating shaft being rotatably embedded in the rotating cavity, and a plurality of slots being provided around the surface of the rotating member;

[0018] The rotating cavity is provided with a lifting cavity, the middle of the lifting cavity is provided with a latch inserted into the slot, the surface of the latch is wound with a spring, and the two ends of the spring are respectively in contact with the latch and the inner wall of the lifting cavity.

[0019] As a further description of the shading system for a lamp of the above technology:

[0020] The end of the latch pin is arranged in an inclined shape so as to be displaced after being squeezed by the inner wall of the slot.

[0021] As a further description of the shading system for a lamp of the above technology:

[0022] The shading mechanism further comprises an open strip hole which is provided on the first shading cover and communicates with the first through hole, and the width of the strip hole is the same as the outer diameter of the light bulb.

[0023] As a further description of the shading system for a lamp of the above technology:

[0024] A third light outlet with a diameter half that of the first light outlet is formed adjacent to the first through hole and the second through hole. When the two third light outlets coincide with the axis of the transparent glass, the light outlet area is reduced, and the light flux of the light source is concentrated after passing through the third light outlet.

[0025] As a further description of the shading system for a lamp of the above technology:

[0026] A second light outlet is provided on the adjacent side of the third light outlet provided on the surface of the first light shield and the second light shield. When the two second light outlets coincide with the axis of the transparent glass slide, the light source provides a basic light source through the third light outlet and provides a supplementary light source through the third light outlet on both sides.

[0027] As a further description of the shading system for a lamp of the above technology:

[0028] When the first light outlet, the second light outlet and the third light outlet opened on the surface of the first light shield and the second light shield do not coincide with the axis of the transparent glass, some of the first light outlet and the second light outlet form irregular light outlets.

[0029] As a further description of the shading system for a lamp of the above technology:

[0030] When the first light shield and the second light shield form a filter shield, the third light outlet on the second light shield and the strip hole on the first light shield form a long strip light transmission area, and the third light outlet on the first light shield forms a spherical light transmission area.

[0031] One of the above technical solutions has the following advantages or beneficial effects:

[0032] 1. The shading mechanism integrates the shading and filtering functions into the first and second shading covers. Switching between the shading and filtering functions is achieved by rotating the first and second shading covers. This avoids the traditional design of separate internal shading covers and external filter covers, achieving more efficient space utilization. There is no need to worry about fixing the external filter cover, reducing the risk of loosening due to frequent disassembly and improving long-term stability.

[0033] 2. Through the provided adjustment mechanism, the knob can be rotated within the limitation of the installation cavity, and the knob drives the steering gear to rotate within the limitation of the rotating shaft through the first bevel gear provided inside. The steering gear can drive the rotating rod to rotate through the second bevel gear, and the rotation direction of the rotating rod is opposite to that of the knob. While the knob drives the first light shield to rotate through the first interlocking part, the rotating rod drives the second light shield to rotate in the opposite direction through the second interlocking part, thereby achieving the purpose of controlling the first light shield and the second light shield to rotate in different directions at the same time. By turning the knob for control, the function switching of filtering and shading is completed without touching the lamp body, avoiding the risk of burns caused by contact with high-temperature components. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of the three-dimensional structure of a shading system for a lamp is shown;

[0035] Figure 2 A schematic diagram of a three-dimensional cross-sectional structure of a light shading system for a lamp is shown;

[0036] Figure 3 shows a schematic diagram of the three-dimensional structure of the first light shield;

[0037] Figure 4 shows a schematic diagram of the three-dimensional structure of the second light shield;

[0038] Figure 5 A schematic diagram of the three-dimensional structure of the lamp body when it is adjusted to a closed state is shown;

[0039] Figure 6 A schematic diagram of the three-dimensional structure of the lamp body when the light outlet area is adjusted to the maximum;

[0040] Figure 7 Shown Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0041] Figure 8 A partial front cross-sectional structural diagram of the adjustment mechanism is shown;

[0042] Figure 9 A schematic diagram of the three-dimensional structure of the knob is shown;

[0043] Figure 10 A schematic diagram of the three-dimensional structure of the rotating rod is shown;

[0044] Figure 11 A schematic diagram of the three-dimensional cross-sectional structure of the interior of the knob is shown;

[0045] Figure 12 A schematic diagram of a partial three-dimensional structure of the locking mechanism when it is in a locked state is shown;

[0046] Figure 13A schematic diagram of a partial three-dimensional structure of the locking mechanism when it is in an unlocked state is shown;

[0047] Figure 14 A schematic diagram of the three-dimensional structure of the lamp body when the light outlet area is adjusted to half;

[0048] Figure 15 A schematic diagram of the three-dimensional structure of the lamp body when the light outlet is adjusted to an extended state is shown;

[0049] Figure 16 It shows a schematic diagram of the three-dimensional structure when the light outlet of the lamp body is adjusted to a scattering state.

[0050] Legend:

[0051] 10. Lamp body; 11. Housing; 12. Translucent glass; 13. Bulb;

[0052] 20. Shading mechanism; 21. First light shield; 211. First through hole; 212. Strip hole; 22. Second light shield; 221. Second through hole; 23. First light outlet; 24. Second light outlet; 25. Third light outlet;

[0053] 30. Adjustment mechanism; 31. Mounting cavity; 311. Guide rail; 32. Knob; 321. Fitting groove; 322. Opening groove; 33. First fitting portion; 34. Rotating rod; 35. Second fitting portion; 36. First bevel gear; 37. Second bevel gear; 38. Rotating shaft; 39. Steering gear;

[0054] 40. Locking mechanism; 41. Rotating chamber; 42. Rotating member; 43. Slot; 44. Lifting chamber; 45. Latch; 46. Spring. DETAILED DESCRIPTION

[0055] The following will provide a clear and complete description of the technical aspects of a light shading system for a lamp in accordance with the present invention, in conjunction with the accompanying drawings. Obviously, the described embodiments are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are considered within the scope of protection of the present invention.

[0056] In order to solve the problem that the operation of removing and installing the filter plate is relatively cumbersome when the existing detachable filter plate is installed on the outside of the lamp to protect the components and light shield inside the lamp, the present invention proposes a light shielding system for the lamp, such as Figure 1 - Figure 16 As shown:

[0057] The lamp body 10 is included. Figure 1-Figure 2As shown, the lamp body 10 includes a shell 11, on which a transparent glass 12 with a circular light-transmitting area in the middle is installed. A bulb 13 for generating light is arranged inside the shell 11. When the bulb 13 is turned on, light is emitted from the shell 11 through the transparent glass 12.

[0058] A light shielding mechanism 20 is provided in the housing 11 to block external light sources from directly irradiating the bulb 13 through the light-transmitting glass slide 12. The light shielding mechanism 20 includes a spherical first light shield 21 rotatably provided in the housing 11. A first through hole 211 having the same outer diameter as the bulb 13 is provided on the surface of the first light shield 21. A second light shield 22 is provided in the first light shield 21 in a direction opposite to that of the first light shield 21. A second through hole 221 having the same diameter as the first through hole 211 is provided on the second light shield 22. A first light outlet 23 is provided on both the first light shield 21 and the second light shield 22. The first light outlet 23 has the same outer diameter as the circular light-transmitting area of ​​the light-transmitting glass slide 12. Preferably, the maximum rotation angle of the first light shield 21 and the second light shield 22 is 180°.

[0059] When the first through hole 211 and the second through hole 221 are in contact with the bulb 13, the rotation angle of the first light shield 21 and the second light shield 22 is 0°, forming a hemispherical light shield with the first light outlet 23 facing the transparent glass 12. The light source is blocked and restricted by the light shield and then emitted through the bulb 13 as a standard light.

[0060] The first light outlet 23 formed on the first light shield 21 and the second light shield 22 faces the bulb 13, and when the first through hole 211 and the second through hole 221 coincide with the axis of the light-transmitting glass 12, the rotation angle of the first light shield 21 and the second light shield 22 is 180 degrees. The first light shield 21 and the second light shield 22 form a hemispherical filter that covers the bulb 13 and blocks natural light. It should be noted that since the bulb 13 needs to be within the hemispherical light shield to most effectively block and restrict the light source, when the first light shield 21 and the second light shield 22 are switched to the hemispherical filter, a circular hole formed by the first through hole 211 and the second through hole 221 will exist in the middle. Although this may cause an unintended light spot to form in the filter, it still achieves the effect of significantly reducing the intensity of natural light. Moreover, the diameter of the circular hole is the same as that of the bulb 13, and the impact on normal use is limited.

[0061] Through this design, the shading and filtering functions are integrated into the first shading cover 21 and the second shading cover 22, and the shading and filtering functions are switched by rotating the first shading cover 21 and the second shading cover 22, thereby avoiding the separate design of the internal shading cover and the external filter cover in the traditional solution, achieving more efficient space utilization, and eliminating the need to consider the fixation of the external filter cover, reducing the risk of loosening due to frequent disassembly, and improving the stability of long-term use.

[0062] In order to achieve the first light shield 21 and the second light shield 22 rotating in opposite directions at the same time, Figure 7-11 As shown, the first light shield 21 and the second light shield 22 are rotatably arranged in the housing 11 through an adjustment mechanism 30. The adjustment mechanism 30 includes a mounting cavity 31 opened at the top of the housing 11 and a knob 32 rotatably embedded in the mounting cavity 31. Preferably, an annular guide rail 311 is provided on the inner wall of the mounting cavity 31, and an engaging groove 321 rotatably engaged with the guide rail 311 is provided on the surface of the knob 32. When the knob 32 rotates, the engaging groove 321 is driven to rotate under the restriction of the guide rail 311, thereby improving the stability of the knob 32 when rotating.

[0063] The knob 32 is connected to the first light shield 21 via a first engaging portion 33 provided at the end thereof. A first bevel gear 36 is fixedly mounted inside the knob 32. A rotating rod 34 is provided through the middle of the knob 32 and the first engaging portion 33. A second bevel gear 37 is provided on the top of the rotating rod 34, and the bottom is connected to the second light shield 22 via a second engaging portion 35. A rotating shaft 38 is also rotatably provided on the mounting cavity 31. An open slot 322 is provided on the surface of the knob 32 for the rotating shaft 38 to pass through. A steering gear 39 is mounted at the end of the rotating shaft 38, which meshes with the first bevel gear 36 and the second bevel gear 37.

[0064] By rotating the knob 32, the knob 32 can be rotated within the limitation of the installation cavity 31. The knob 32 drives the steering gear 39 to rotate within the limitation of the rotating shaft 38 through the first bevel gear 36 provided therein. The steering gear 39 can drive the rotating rod 34 to rotate through the second bevel gear 37, and the rotation direction of the rotating rod 34 is opposite to that of the knob 32. While the knob 32 drives the first light shield 21 to rotate through the first interlocking portion 33, the rotating rod 34 drives the second light shield 22 to rotate in the opposite direction through the second interlocking portion 35, thereby achieving the purpose of controlling the first light shield 21 and the second light shield 22 to rotate in different directions at the same time. By rotating the knob 32 for control, the light filtering and light shielding function switching is completed without touching the lamp body 10, avoiding the risk of burns caused by contact with high-temperature components.

[0065] When the knob 32 starts to rotate, the first bevel gear 36 applies a torque opposite to the rotation direction of the knob 32 to the rotating rod 34 through the steering gear 39 and the second bevel gear 37. As a result, although the rotating rod 34 is rotatably embedded in the knob 32, the rotating rod 34 cannot rotate in the same direction as the knob 32. The rotation directions of the knob 32 and the rotating rod 34 are always opposite.

[0066] It should be noted that since the maximum rotation angle of the first light shield 21 is 180°, the arc of the opening slot 322 on the knob 32 is also 180°. When the first light shield 21 is at 0°, one end of the fitting slot 321 is in contact with the rotating shaft 38. After the opening slot 322 rotates 180° along with the knob 32, the other end of the opening slot 322 is in contact with the rotating shaft 38 again.

[0067] At the same time, if Figure 3 As shown, the shading mechanism 20 also includes an open strip hole 212 opened on the first shading cover 21 and connected to the first through hole 211. The width of the strip hole 212 is the same as the outer diameter of the light bulb 13. The strip hole 212 is opened to prevent the first shading cover 21 from colliding with the light bulb 13 during rotation, thereby achieving the purpose of enabling the first through hole 211 to fit the light bulb 13.

[0068] According to different usage scenarios, the first light shield 21 and the second light shield 22 can also be rotated to different angles and different sizes of light outlets opened on the first light shield 21 and the second light shield 22 can produce different types of light to meet the needs of different lighting scenarios, such as Figure 14 As shown, a third light outlet 25 having a diameter half that of the first light outlet 23 is formed adjacent to the first through hole 211 and the second through hole 221. When the two third light outlets 25 coincide with the axis of the light-transmitting glass 12, the light outlet area is reduced, and the luminous flux of the light source is concentrated after passing through the third light outlet 25. The light outlet area is reduced, and the luminous flux per unit area is concentrated, forming a more concentrated light, which significantly improves the brightness and is suitable for long-distance illumination or accent lighting.

[0069] like Figure 15 As shown, a second light outlet 24 is provided on each adjacent side of the third light outlet 25 provided on the surface of the first light shield 21 and the second light shield 22. When the two second light outlets 24 coincide with the axis of the light-transmitting glass 12, the light source provides basic lighting through the third light outlet 25 to cover the main area. At the same time, supplementary light sources are provided through the third light outlets 25 on both sides, thereby expanding the coverage of the light in the horizontal direction and reducing the generation of shadows. This is suitable for scenes requiring wide-angle lighting, thereby reducing the number of lamp bodies 10 installed or the installation spacing.

[0070] like Figure 16 As shown, when the first light outlet 23, the second light outlet 24, and the third light outlet 25 provided on the surfaces of the first light shield 21 and the second light shield 22 do not coincide with the axis of the transparent glass 12, some of the first light outlet 23 and the second light outlet 24 form irregular light outlets. The irregular edges disperse the light in different directions through multi-angle reflection and refraction, thereby reducing the concentration of central light intensity and improving the overall uniformity. The structural design can achieve light softening, which is suitable for places requiring soft lighting.

[0071] It should be noted that since the first light shield 21 and the second light shield 22 are both located in the housing 11 and there is a certain distance between each light outlet and the light-transmitting glass 12, when the three light-shielding function states described above are in use, the light leakage caused by the opening of other light outlets only occurs within the housing 11, and the leaked light source does not directly pass through the light-transmitting glass 12 and therefore does not significantly affect the emitted light.

[0072] like Figure 5 As shown, when the first light shield 21 and the second light shield 22 form a filter shield, the third light outlet 25 provided on the second light shield 22 and the strip-shaped hole 212 provided on the first light shield 21 form a long strip of light-transmitting area, and the third light outlet 25 provided on the first light shield 21 forms a spherical light-transmitting area. After the light source passes through the long strip of light-transmitting area and the spherical light-transmitting area, an exclamation mark light spot is formed, thereby prompting the user that the first light shield 21 and the second light shield 22 are in the filtering function at this time, and the first light shield 21 and the second light shield 22 need to be switched to other light-shielding function states for use by rotating the knob 32.

[0073] In order to control the rotation angle of the first light shield 21 and the second light shield 22 and lock the first light shield 21 and the second light shield 22 after rotating a specific angle, as shown in FIG. Figure 8 、 Figure 11-13 As shown, a locking mechanism 40 for locking the rotating shaft 38 is provided on the mounting cavity 31. The locking mechanism 40 includes a rotating cavity 41 provided on the mounting cavity 31. A rotating member 42 connected to the rotating shaft 38 is rotatably embedded in the rotating cavity 41. A plurality of slots 43 are formed around the surface of the rotating member 42. Preferably, the number of the slots 43 is five and the angle between adjacent slots 43 is 45°.

[0074] The rotating chamber 41 is provided with a lifting chamber 44. A latch 45 is provided in the middle of the lifting chamber 44 and is inserted into the slot 43. A spring 46 is wound around the surface of the latch 45. The two ends of the spring 46 abut against the latch 45 and the inner wall of the lifting chamber 44 respectively.

[0075] When it is necessary to rotate the knob 32 to adjust the angles of the first light shield 21 and the second light shield 22, the latch 45 is pulled to move the latch 45 out of the slot 43 to release the restriction on the rotating member 42. At the same time, the latch 45 cooperates with the lifting chamber 44 to squeeze the spring 46 to cause it to elastically deform, and the restriction of the rotating member 42 on the rotating shaft 38 and the steering gear 39 is released. The knob 32 and the rotating rod 34 can be rotated to adjust the angles of the first light shield 21 and the second light shield 22. After the adjustment is completed, the latch 45 is released. Under the push of the spring 46 to recover from the elastic deformation, the latch 45 automatically inserts into the rotated slot 43 to complete the locking, thereby preventing the first light shield 21 and the second light shield 22 from rotating and changing their angles during use.

[0076] Further, such as Figure 12 and Figure 13 As shown, the end of the latch 45 is set to be displaced by the inner wall of the slot 43 after being squeezed. By rotating the latch 45, the inclined surface of the latch 45 is opposite to the rotation direction of the rotating member 42. At this time, the restriction on the rotating member 42 is released. By rotating the knob 32, the knob 32 drives the rotating shaft 38 to rotate through the first bevel gear 36 and the steering gear 39. When the rotating member 42 is rotated by the rotating shaft 38, it squeezes the latch 45 through the slot 43, causing it to move by itself and move out of the slot 43. The latch 45 squeezes the spring 46 during the process of being received into the lifting chamber 44. When the rotating member 42 rotates 45 degrees, the spring 46 elastically forms the rotating member 42. When the latch 45 is pushed back, it quickly pops out of the lifting cavity 44 and inserts into the slot 43. The sound of the latch 45 colliding with the slot 43 informs the user that the rotation angle has reached 45 degrees. At this time, the user can choose to continue rotating the knob 32 to repeat the above operation, or choose to rotate the latch 45 so that the inclined surface of the latch 45 is perpendicular to the rotation direction. Since the slot 43 cannot move the latch 45 out by squeezing the inclined surface, the latch 45 cooperates with the slot 43 under the push of the spring 46 to limit the position of the rotating member 42. The knob 32 cannot be rotated, and the positions of the first light shield 21 and the second light shield 22 are locked.

[0077] like Figure 14-16 As shown, when the pin 45 is inserted into the slot 43 with angles of 45°, 90°, 135° and 180° respectively, the shading functions formed by the combination of the first light shield 21 and the second light shield 22 are respectively concentrated light through the third light outlet 25, expanded light through the second light outlet 24, scattered light formed through the first light outlet 23 and the second light outlet 24, and an exclamation mark light spot formed through the strip hole 212 and the third light outlet 25.

[0078] Working principle:

[0079] By rotating the latch 45 so that the inclined surface of the latch 45 is opposite to the rotation direction, the knob 32 is rotated. The knob 32 rotates within the installation cavity 31, and the steering gear 39 is driven by the internal first bevel gear 36 to rotate within the rotation shaft 38. The steering gear 39 drives the rotating rod 34 to rotate via the second bevel gear 37, and the rotating rod 34 rotates in the opposite direction to the knob 32.

[0080] The knob 32 drives the first light shield 21 to rotate through the first interlocking portion 33, and the rotating rod 34 drives the second light shield 22 to rotate in the opposite direction through the second interlocking portion 35, so that the first light shield 21 and the second light shield 22 rotate in different directions at the same time, completing the switching between the light filtering and light shielding functions;

[0081] At the same time, the knob 32 drives the rotating shaft 38 to rotate through the first bevel gear 36 and the steering gear 39. When the rotating member 42 is driven by the rotating shaft 38 to rotate, it squeezes the latch 45 through the slot 43, causing it to move by itself and move out of the slot 43. The latch 45 squeezes the spring 46 in the process of being retracted into the lifting chamber 44. When the rotating member 42 has rotated 45 degrees, the latch 45 quickly pops out of the lifting chamber 44 and inserts into the slot 43 under the push of the spring 46 elastic deformation recovery. The sound produced by the collision between the latch 45 and the slot 43 notifies the user that the rotation angle has reached 45 degrees. At this time, the user can choose to continue to rotate the knob 32 to repeat the above operation, or rotate the latch 45 so that the inclined surface of the latch 45 is perpendicular to the rotation direction. Under the push of the spring 46, the latch 45 cooperates with the slot 43 to limit the position of the rotating member 42, and the knob 32 cannot be rotated. The positions of the first light shield 21 and the second light shield 22 are locked;

[0082] The first through hole 211 and the second through hole 221 are fitted with the light bulb 13 and rotated at an angle of 0° to form a hemispherical light shield with the first light outlet 23 facing the light-transmitting glass 12;

[0083] The first light outlet 23 faces the bulb 13, and the first through hole 211 and the second through hole 221 coincide with the axis of the light-transmitting glass 12. The rotation angle is 180 degrees, forming a hemispherical filter that covers the bulb 13 and blocks natural light.

[0084] When the pin 45 is inserted into the slot 43 with angles of 45°, 90°, 135° and 180° respectively, the shading functions formed by the combination of the first light shading hood 21 and the second light shading hood 22 are respectively concentrated light through the third light outlet 25, expanded light through the second light outlet 24, scattered light formed through the first light outlet 23 and the second light outlet 24, and an exclamation mark light spot formed through the strip hole 212 and the third light outlet 25.

[0085] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited to this. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, can make equivalent replacements or changes to a shading system for a lamp and its inventive concept according to the technology of the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. A shading system for a lamp, comprising a lamp body (10), the lamp body (10) comprising a housing (11), a light-transmitting glass (12) having a circular light-transmitting area in the middle mounted on the housing (11), a bulb (13) for generating a light source disposed inside the housing (11), and characterized in that: The housing (11) is provided with a shading mechanism (20) for blocking an external light source from directly irradiating the bulb (13) through the light-transmitting glass (12). The shading mechanism (20) comprises a spherical first light shield (21) rotatably provided in the housing (11). A first through hole (211) having the same outer diameter as the bulb (13) is provided on the surface of the first light shield (21). A second light shield (22) rotating in the opposite direction to the first light shield (21) is provided in the first light shield (21). A second through hole (221) having the same diameter as the first through hole (211) is provided on the second light shield (22). Both the first light shield (21) and the second light shield (22) are provided with a first light outlet (23). The first light outlet (23) has the same outer diameter as the circular light-transmitting area of ​​the light-transmitting glass (12). When the first through hole (211) and the second through hole (221) are fitted to the light bulb (13), a hemispherical light shield is formed with the first light outlet (23) facing the light-transmitting glass (12); the light source is blocked and restricted by the light shield and then emitted through the light bulb (13) to form a standard light beam; The first light outlet (23) provided on the first light shield (21) and the second light shield (22) faces the light bulb (13), and when the first through hole (211) and the second through hole (221) coincide with the axis of the light-transmitting glass (12), the first light shield (21) and the second light shield (22) form a hemispherical filter that covers the light bulb (13) and blocks natural light.

2. A shading system for a lamp according to claim 1, characterized in that: The first light shield (21) and the second light shield (22) are rotatably arranged in the housing (11) via an adjusting mechanism (30), the adjusting mechanism (30) comprising a mounting cavity (31) provided at the top of the housing (11) and a rotating knob (32) rotatably embedded in the mounting cavity (31), the rotating knob (32) being connected to the first light shield (21) via a first engaging portion (33) provided at the end thereof, and a first bevel gear (36) being fixedly installed inside the rotating knob (32); A rotating rod (34) is provided through the middle of the rotating knob (32) and the first engaging portion (33); a second bevel gear (37) is provided on the top of the rotating rod (34) and the bottom is connected to the second light shield (22) through the second engaging portion (35); A rotating shaft (38) is rotatably provided on the installation cavity (31), an opening groove (322) for the rotating shaft (38) to pass through is provided on the surface of the rotating knob (32), and a steering gear (39) is installed at the end of the rotating shaft (38) and is engaged with the first bevel gear (36) and the second bevel gear (37).

3. The shading system for a lamp according to claim 2, characterized in that: An annular guide rail (311) is provided on the inner wall of the installation cavity (31), and an engaging groove (321) rotatably engaged with the guide rail (311) is provided on the surface of the rotating knob (32).

4. The shading system for a lamp according to claim 2, characterized in that: The installation cavity (31) is provided with a locking mechanism (40) for locking the rotating shaft (38). The locking mechanism (40) includes a rotating cavity (41) provided on the installation cavity (31). A rotating member (42) connected to the rotating shaft (38) is rotatably embedded in the rotating cavity (41). A plurality of slots (43) are formed around the surface of the rotating member (42). The rotating chamber (41) is provided with a lifting chamber (44), the middle of which is penetrated by a latch (45) inserted into the slot (43), a spring (46) is wound around the surface of the latch (45), and two ends of the spring (46) are respectively in contact with the latch (45) and the inner wall of the lifting chamber (44).

5. The shading system for a lamp according to claim 4, characterized in that: The end of the latch pin (45) is arranged in an inclined shape so as to be displaced after being squeezed by the inner wall of the slot (43).

6. The shading system for a lamp according to claim 1, characterized in that: The shading mechanism (20) further comprises an open strip hole (212) provided on the first shading cover (21) and communicating with the first through hole (211); the width of the strip hole (212) is the same as the outer diameter of the light bulb (13).

7. The shading system for a lamp according to claim 6, characterized in that: A third light outlet (25) having a diameter half that of the first light outlet (23) is provided adjacent to the first through hole (211) and the second through hole (221). When the two third light outlets (25) coincide with the axis of the light-transmitting glass (12), the light outlet area is reduced, and the light flux of the light source is concentrated after passing through the third light outlet (25).

8. The shading system for a lamp according to claim 7, characterized in that: A second light outlet (24) is provided on each adjacent side of the third light outlet (25) provided on the surface of the first light shield (21) and the second light shield (22). When the two second light outlets (24) coincide with the axis of the transparent glass (12), the light source provides a basic light source through the third light outlet (25), and provides a supplementary light source through the third light outlets (25) on both sides.

9. The shading system for a lamp according to claim 8, characterized in that: When the first light outlet (23), the second light outlet (24) and the third light outlet (25) provided on the surfaces of the first light shield (21) and the second light shield (22) do not coincide with the axis of the light-transmitting glass (12), part of the first light outlet (23) and the second light outlet (24) form irregular light outlets.

10. The shading system for a lamp according to claim 9, characterized in that: When the first light shield (21) and the second light shield (22) form a filter shield, the third light outlet (25) provided on the second light shield (22) and the strip-shaped hole (212) provided on the first light shield (21) form a long strip-shaped light-transmitting area, and the third light outlet (25) provided on the first light shield (21) forms a spherical light-transmitting area.

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