Lighting apparatus

Abstract

A lighting apparatus, comprising a suspension arm (1), a lamp body (2) having a light source (22), and a light-shielding cover (3), which are connected in sequence; the light-shielding cover (3) comprises a connecting frame (31) and a light-shielding plate assembly (32), wherein the connecting frame (31) is assembled on the lamp body (2), and the light-shielding plate assembly (32) is hinged on an outer peripheral surface of the connecting frame (31); and the light-shielding plate assembly (32) consists of a plurality of first light-shielding plates (321) having a constant area and a plurality of second light-shielding plates (322) having an adjustable area, and the first light-shielding plates (321) and the second light-shielding plates (322) can swing up and down for adjustment relative to the connecting frame (31). The lighting apparatus can not only adjust an irradiation angle in such a way that the lamp body (2) is driven to swing by the suspension arm (1), but also adjust the irradiation angle and an irradiation range by means of swinging the first light-shielding plates (321) and the second light-shielding plates (322) on the light-shielding cover (3). The surface area of the first light-shielding plates (321) remains unchanged, and the surface area of the second light-shielding plates (322) is adjustable, such that different light-emitting patterns can be adjusted, and the irradiation range and the irradiation angle can also be flexibly adjusted.

Description

A lighting device

[0001] This application claims priority to Chinese patent application No. 202411509775.1, filed on October 27, 2024, the entire disclosure of which is incorporated herein by reference. Technical Field

[0002] This invention relates to the field of lighting technology, and more particularly to a lighting device. Background Technology

[0003] In the field of decoration, wall washer lights, spotlights, and downlights are often used for lighting to create a suitable lighting atmosphere.

[0004] In existing technologies, wall washer lights, spotlights, and downlights are all mounted in designated locations using cantilever arms. The lower end of the cantilever arm is hinged to the light body, allowing the light body to adjust the direction of illumination. A flared lampshade is typically installed at the light-emitting end of the light body to constrain the illumination range.

[0005] In the existing technology, the fixed lampshade restricts the illumination range, is not adjustable, and relies entirely on the swing of the lamp body to adjust the area. The method is simple, the operation is unchanged, and the light pattern cannot be adjusted. Its dimming method still needs to be improved. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a lighting device. A suspension arm is arranged above the lamp body, and a light shield is arranged at the lower part of the lamp body. The illumination angle can be adjusted by swinging the lamp body through the suspension arm, and the illumination angle and illumination range can also be adjusted by swinging the first light shield and the second light shield on the light shield. The surface area of ​​the first light shield is constant, while the surface area of ​​the second light shield is adjustable, which can adjust to different light patterns and flexibly adjust the illumination range and illumination angle.

[0007] The present invention provides a lighting device, comprising a suspension arm, a lamp body with a light source, and a light shield connected in sequence;

[0008] The suspension arm includes a suspension arm body and a swing connector pivotally connected to the suspension arm body, the swing connector being connected to the top of the lamp body;

[0009] The light shield includes a connecting frame sleeved on the lamp body and a light shield assembly disposed on the outer peripheral surface of the connecting frame.

[0010] The light-shielding plate assembly includes multiple first light-shielding plates with constant area and multiple second light-shielding plates with adjustable area;

[0011] The first light-shielding plate and the second light-shielding plate are arranged sequentially at intervals along the outer periphery of the connecting frame. The first light-shielding plate and the second light-shielding plate are respectively connected to the connecting frame through a hinge mechanism. The first light-shielding plate and the second light-shielding plate can be adjusted up and down relative to the connecting frame.

[0012] In one of the alternative technical solutions, the second light-shielding plate includes a main board connected to the hinge mechanism and a swing plate pivotally connected to the main board;

[0013] The motherboard is equipped with a swing plate on each of its front and back sides, and the two swing plates are arranged opposite to each other.

[0014] When the two swing plates are in the retracted state, the two swing plates are respectively stacked on the front and back sides of the main board;

[0015] When the two swing plates are in the unfolded state, the two swing plates extend from the two side edges of the main board, respectively.

[0016] In one of the alternative technical solutions, the first light-shielding plate and the main board are both in the shape of an isosceles trapezoid;

[0017] The short side of the first light-shielding plate is connected to the hinge mechanism, and the long side of the main board is connected to the hinge mechanism.

[0018] The pivot ends of the two swing plates are respectively hinged to the two apex corners of the main plate.

[0019] In one of the alternative technical solutions, the swing plate includes a strip plate and a fan-shaped plate connected to the strip plate, the outer edge of the strip plate is flush with the outer edge of the fan-shaped plate, and the end of the strip plate away from the fan-shaped plate is hinged to the top corner of the main plate.

[0020] In one of the alternative technical solutions, the suspension arm body has a first wiring channel, and the swing connector includes a second wiring channel, the second wiring channel being connected to the first wiring channel;

[0021] The lower end of the main body of the suspension arm is connected to a first connecting sleeve that communicates with the first wiring channel, and the swing connector is provided with a second connecting sleeve that communicates with the second wiring channel;

[0022] The second connecting sleeve is connected to the first connecting sleeve via a pivot shaft, and a pre-tightening element is provided on the pivot shaft.

[0023] In one of the alternative technical solutions, the lower end of the swing connector is provided with a plug sleeve, the heat sink in the lamp body has a plug hole, and the plug sleeve is fastened in the plug hole.

[0024] In one of the alternative technical solutions, the lamp body is provided with a light-diffusing device, which is located below the light source;

[0025] The light-emitting surface of the diffuser is provided with multiple wavy diffuser stripes, and any two adjacent diffuser stripes are arranged alternately. The sides and / or bottom surfaces of the diffuser stripes are wavy.

[0026] The diffused light stripes are located in the light outlet of the lamp body.

[0027] In one of the alternative technical solutions, one side surface of the astigmatic stripe is vertical along the vertical direction, and the other side surface of the astigmatic stripe is curved.

[0028] In one alternative technical solution, the light-scattering device includes a light guide plate, and the light-scattering stripes are disposed on the bottom surface of the light guide plate; or,

[0029] The astigmatism device includes a conical lens, the radius of which gradually increases along the top-to-bottom direction;

[0030] The top surface of the conical lens is provided with an incident light groove, the groove wall surface of which is curved, and the astigmatic stripes are provided on the bottom surface of the conical lens.

[0031] In one of the alternative technical solutions, a conical incident groove is provided at the center of the bottom of the incident groove, and the radius of the conical incident groove gradually decreases along the direction from top to bottom.

[0032] The above technical solution has the following beneficial effects:

[0033] The lighting device provided by this invention includes a suspension arm, a lamp body with a light source, and a light shield. The suspension arm consists of a main body and a swing connector. The upper end of the swing connector is hinged to the main body, and the lower end is connected to the lamp body. The rotation position of the swing connector avoids the lamp body, allowing for unrestricted swinging, a large swing range, and a large swing angle for the lamp body. The light shield includes a connecting frame and a light shield assembly. The connecting frame is assembled onto the lamp body, and the light shield assembly is hinged to the outer circumferential surface of the connecting frame. The light shield assembly consists of multiple first light shields with constant area and multiple second light shields with adjustable area. The first and second light shields can be adjusted up and down relative to the connecting frame, allowing for adjustment of the illumination angle and range, as well as the beam pattern.

[0034] Therefore, the lighting device provided by the present invention can adjust the illumination angle by swinging the lamp body with the suspension arm, and can also adjust the illumination angle and illumination range by swinging the first and second light-shielding plates on the light shield. The surface area of ​​the first light-shielding plate remains unchanged, while the surface area of ​​the second light-shielding plate is adjustable, which can adjust to different light patterns and flexibly adjust the illumination range and illumination angle. Attached Figure Description

[0035] The disclosure of this invention will become more readily understood by referring to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings:

[0036] Figure 1 is a perspective view of the lighting device provided in the first embodiment of the present invention;

[0037] Figure 2 is an exploded view of the lighting device provided in the first embodiment of the present invention;

[0038] Figure 3 is a schematic diagram of the light shield assembly in its initial state.

[0039] Figure 4 is an exploded view of the second light-shielding plate;

[0040] Figure 5 is a schematic diagram of the first and second light-blocking plates blocking light when their lower edges are down.

[0041] Figure 6 is a schematic diagram showing the two swing plates of the second light-shielding plate swinging out from the side of the main board;

[0042] Figure 7 is a cross-sectional view of a cantilever arm and a lamp body of one structure;

[0043] Figure 8 is a three-dimensional view of a conical lens from one angle;

[0044] Figure 9 is a stereoscopic view of the conical lens from another perspective;

[0045] Figure 10 is a cross-sectional view of a conical lens, wherein the cutting plane is along the extension direction of the astigmatic fringes;

[0046] Figure 11 is a cross-sectional view of a conical lens, wherein the cutting plane is perpendicular to the extension direction of the astigmatic fringes;

[0047] Figure 12 is a cross-sectional view of a cantilever arm and a lamp body of one structure;

[0048] Figure 13 is a three-dimensional view of the light guide plate from one angle;

[0049] Figure 14 is a three-dimensional view of the light guide plate from another perspective;

[0050] Figure 15 is a cross-sectional view of the light guide plate, wherein the cutting surface is perpendicular to the extension direction of the diffused light stripes;

[0051] Figure 16 is a schematic diagram of the diffused light stripes located in the light outlet of the lamp body;

[0052] Figure 17 is a cross-sectional view of the cantilever arm;

[0053] Figure 18 is a perspective view of the lighting device provided in the second embodiment of the present invention;

[0054] Figure 19 is a perspective view of the lighting device provided in the third embodiment of the present invention. Detailed Implementation

[0055] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0056] As shown in Figures 1-6 and 18-19, an embodiment of the present invention provides a lighting device, which includes a suspension arm 1, a lamp body 2 with a light source 22, and a light shield 3 connected in sequence.

[0057] The suspension arm 1 includes a suspension arm body 11 and a swing connector 12 pivotally connected to the suspension arm body 11. The swing connector 12 is connected to the top of the lamp body 2.

[0058] The light shield 3 includes a connecting frame 31 sleeved on the lamp body 2 and a light shield assembly 32 disposed on the outer peripheral surface of the connecting frame 31.

[0059] The light-shielding plate assembly 32 includes multiple first light-shielding plates 321 with constant area and multiple second light-shielding plates 322 with adjustable area.

[0060] The first light-shielding plate 321 and the second light-shielding plate 322 are arranged sequentially at intervals along the outer periphery of the connecting frame 31. The first light-shielding plate 321 and the second light-shielding plate 322 are respectively connected to the connecting frame 31 through the hinge mechanism 33. The first light-shielding plate 321 and the second light-shielding plate 322 can be adjusted up and down relative to the connecting frame 31.

[0061] The lighting device provided by the present invention includes a suspension arm 1, a lamp body 2, and a light shield 3.

[0062] The upper end of the suspension arm 1 is connected to the mounting structure, which can be a guide rail seat 4, a ceiling mount 5, a magnetic guide rail seat 6, etc.

[0063] The suspension arm 1 consists of a suspension arm body 11 and a swing connector 12. The upper end of the swing connector 12 is hinged to the suspension arm body 11, and the lower end of the swing connector 12 is connected to the lamp body 2. The rotation position of the swing connector 12 avoids the lamp body 2, so the swing is no longer restricted, the swing range is large, and the swing angle of the lamp body 2 is large. Specifically, a latch 21 can be provided at the top of the lamp body 2, and a latch plate can be provided on the swing connector 12. The latch plate is engaged in the latch 21.

[0064] The light shield 3 includes a connecting frame 31 and a light shield assembly 32. The connecting frame 31 is assembled on the lamp body 2, and the light shield assembly 32 is hinged to the outer peripheral surface of the connecting frame 31.

[0065] The light-shielding plate assembly 32 consists of multiple first light-shielding plates 321 with constant area and multiple second light-shielding plates 322 with adjustable area. The first light-shielding plates 321 and the second light-shielding plates 322 can be adjusted up and down relative to the connecting frame 31, thereby adjusting the irradiation angle and irradiation range, as well as the light pattern.

[0066] The area of ​​the first light-shielding plate 321 remains constant, meaning it adopts a one-piece structure with an unchanged surface area. Therefore, when the first light-shielding plate 321 is adjusted to a certain angle, its light-blocking area is also fixed. The area of ​​the second light-shielding plate 322 is adjustable, allowing for adjustment of the light-blocking area as needed. The second light-shielding plate 322 adopts a split structure, with the two adjacent plates on the left and right being extendable or retractable, thus enabling adjustment of the light-blocking area.

[0067] The first light-shielding plate 321 and the second light-shielding plate 322 are respectively installed on the outside or the outer periphery of the connecting frame 31 through the hinge mechanism 33 and are distributed along the circumference of the connecting frame 31. There is a second light-shielding plate 322 between two adjacent first light-shielding plates 321 and a first light-shielding plate 321 between two adjacent second light-shielding plates 322.

[0068] The shapes of the first light-shielding plate 321 and the second light-shielding plate 322 can be selected as needed, such as square plates, trapezoidal plates, fan-shaped plates, etc. Around the connecting frame 31, the shape of the light-shielding plate 2 matches the outline of the connecting frame 31; that is, if the connecting frame 31 is circular, the light-shielding plate 2 is correspondingly arc-shaped; if the connecting frame 31 is square, the light-shielding plate 2 is correspondingly straight. The shape of the connecting frame 31 matches the shape and outline of the lamp body 2.

[0069] Since the first light-shielding plate 321 and the second light-shielding plate 322 are respectively connected to the connecting frame 31 through the hinge mechanism 33, both the first light-shielding plate 321 and the second light-shielding plate 322 can be adjusted up and down relative to the connecting frame 31. The hinge mechanism 33 can be a pivot shaft, hinge, etc., and the hinge mechanism 33 is equipped with damping components, such as damping springs, friction plates, etc., to position the first light-shielding plate 321 and the second light-shielding plate 322, positioning the adjusted first light-shielding plate 321 and the second light-shielding plate 322 in a designated position.

[0070] Since each of the first light-shielding plates 321 and the second light-shielding plate 322 can be adjusted up and down relative to the connecting frame 31, different light emission patterns can be achieved. For example, multiple first light-shielding plates 321 and the second light-shielding plate 322 can be simultaneously tilted towards the centerline of the light emission direction to reduce the light emission pattern and achieve a focusing effect. Alternatively, multiple first light-shielding plates 321 and the second light-shielding plate 322 can be simultaneously tilted around the periphery of the light emission direction to increase the light emission pattern and achieve a diffused light effect, thereby expanding the light emission area. For example, if several of the first light-shielding plates 321 and / or second light-shielding plates 322 simultaneously swing toward the centerline of the light-emitting direction, while the remaining first light-shielding plates 321 and / or second light-shielding plates 322 remain in place or swing with a smaller amplitude than the aforementioned first light-shielding plates 321 and / or second light-shielding plates 322, the light pattern will be restricted to a certain shape, such as a striped light spot, a polygonal light spot, a quasi-elliptical light spot, etc.

[0071] If the light emission direction is defined as downward, the first light-shielding plate 321 and the second light-shielding plate 322 can swing upward until they are perpendicular to the wall of the connecting frame 31, roughly horizontally arranged. At this time, the first light-shielding plate 321 and the second light-shielding plate 322 hardly block the light at all. The angle at which the first light-shielding plate 321 and the second light-shielding plate 322 swing downward from the horizontal position can be selected between 0-90°. Multiple first light-shielding plates 321 and the second light-shielding plate 322 can form a funnel-shaped structure with a gradually widening opening, which plays a role in light diffusion. If the light-shielding plate 2 is installed at the lower end of the connecting frame 31, the angle at which the first light-shielding plate 321 and the second light-shielding plate 322 swing downward from the horizontal position can reach as high as 135°. They can swing towards the centerline side of the light emission direction. Multiple first light-shielding plates 321 and the second light-shielding plate 322 can form a funnel-shaped structure with a gradually narrowing opening, which plays a role in light focusing.

[0072] After adjusting the first light-shielding plate 321 to a certain angle, the second light-shielding plate 322 is then adjusted to the required angle. If the gap between the first light-shielding plate 321 and the second light-shielding plate 322 is too large, the gap between the first light-shielding plate 321 and the second light-shielding plate 322 can be reduced or completely covered by adjusting the second light-shielding plate 322 so that the two adjacent plates on its left and right sides extend or unfold.

[0073] Therefore, the lighting device provided by the present invention can adjust the illumination angle by swinging the lamp body 2 with the suspension arm 1, and can also adjust the illumination angle and illumination range by swinging the first light shield 321 and the second light shield 322 on the light shield 3. The surface area of ​​the first light shield 321 remains unchanged, while the surface area of ​​the second light shield 322 is adjustable, which can adjust to different light patterns and flexibly adjust the illumination range and illumination angle.

[0074] In one embodiment, as shown in Figures 3-6, the second light-shielding plate 322 includes a main plate 3221 connected to the hinge mechanism 33 and a swing plate 3222 pivotally connected to the main plate 3221.

[0075] A swing plate 3222 is mounted on each of the front and back sides of the motherboard 3221, and the two swing plates 3222 are arranged opposite to each other.

[0076] When the two swing plates 3222 are in the retracted state, the two swing plates 3222 are stacked on the front and back sides of the main board 3221 respectively.

[0077] When the two swing plates 3222 are in the unfolded state, the two swing plates 3222 extend from the two side edges of the main board 3221 respectively.

[0078] In this embodiment, the second light-shielding plate 322 includes a main plate 3221 and a swing plate 3222. The main plate 3221 is connected to the hinge mechanism 33, and the swing plate 3222 is connected to the main plate 3221 via a pivot shaft, allowing the swing plate 3222 to swing relative to the main plate 3221 to achieve the retraction and extension function. Specifically, the end of the swing plate 3222 facing the hinge mechanism 33 is connected to the main plate 3221 via a pivot shaft, allowing the swing plate 3222 to swing out or back from one side of the main plate 3221.

[0079] Each set of second light-shielding plates 322 is equipped with a main board 3221 and two swing plates 3222. In order to avoid interference between the two swing plates 3222, the two swing plates 3222 are arranged on the front and back sides of the main board 3221. The two swing plates 3222 can swing out or swing back from the left and right sides of the main board 3221, thereby adjusting the gap on both sides.

[0080] Preferably, the two swing plates 3222 are arranged symmetrically from left to right, and the two swing plates 3222 can swing in the same range and in the same way, which is conducive to uniform configuration.

[0081] The "front side" of the motherboard 3221 referred to here is the side of the motherboard 3221 facing or close to the optical output path, while the "reverse side" of the motherboard 3221 referred to here is the side of the motherboard 3221 facing away from or away from the optical output path. Of course, the aforementioned reverse side can also be called the back side.

[0082] When the two swing plates 3222 are in the retracted state, the two swing plates 3222 are stacked on the front and back sides of the main board 3221, and the light-blocking area at this time is determined by the area of ​​the main board 3221.

[0083] When the two swing plates 3222 are in the unfolded state, the swing plates 3222 extend from the side of the main board 3221. At this time, the light-blocking area is determined by the area of ​​the main board 3221 and the area of ​​the extended swing plates 3222.

[0084] Users can operate a single swing plate 3222 to unfold it as needed, or they can make the two swing plates 3222 unfold to different degrees to adjust different light patterns.

[0085] In one embodiment, as shown in FIG3, the connecting frame 31 is provided with a clamping mechanism for clamping the lamp body 2. The clamping mechanism includes a handle 35 and a top block 34, with the top block 34 located inside the connecting frame 31. The connecting frame 31 has an internal threaded hole, and the handle 35 is connected to a threaded rod, which passes through the internal threaded hole and is pivotally connected to the top block 34. The top block 34 can be pushed out or pulled back by rotating the handle 35. The end of the threaded rod is connected to the top block 34 via a bearing, and when the threaded rod rotates, the top block 34 only translates and does not rotate.

[0086] In one embodiment, as shown in Figures 3-6, the first light-shielding plate 321 and the main plate 3221 are respectively in the shape of an isosceles trapezoid.

[0087] The short side of the first light-shielding plate 321 is connected to the hinge mechanism 33, and the long side of the main plate 3221 is connected to the hinge mechanism 33.

[0088] The pivot ends 3222a of the two swing plates 3222 are respectively hinged to the two apex corners 3221a of the main plate 3221.

[0089] In this embodiment, the first light-shielding plate 321 is in the shape of an isosceles trapezoid, and the short side of the first light-shielding plate 321 is connected to the hinge mechanism 33. When the first light-shielding plate 321 is lowered, it can have more area to block light.

[0090] The motherboard 3221 is also in the shape of an isosceles trapezoid. The long side of the motherboard 3221 is connected to the hinge mechanism 33, and after the motherboard 3221 swings down, it becomes wider at the top and narrower at the bottom, so as to avoid the adjacent first light shield 321.

[0091] The end of the swing plate 3222 facing the long side of the main board 3221 is the pivot end 3222a, which is hinged to the apex 3221a of the main board 3221. The two pivot ends 3222a of the two swing plates 3222 are respectively installed at the two apex 3221a of the main board 3221. When the swing plate 3222 swings outward, the part of the swing plate 3222 near the short side of the main board 3221 swings out more. The two swing plates 3222 and the main board 3221 form a trapezoidal structure that is narrower at the top and wider at the bottom, which fills the trapezoidal space formed by the two first light-shielding plates 321 on both sides after they swing down, thus achieving a better light-shielding adjustment effect.

[0092] In one embodiment, as shown in FIG4, the swing plate 3222 includes a strip plate 3222b and a fan plate 3222c connected to the strip plate 3222b. The outer edge of the strip plate 3222b is flush with the outer edge of the fan plate 3222c. The end of the strip plate 3222b away from the fan plate 3222c is hinged to the top corner 3221a of the main plate 3221.

[0093] In this embodiment, the swing plate 3222 is composed of a strip plate 3222b and a fan-shaped plate 3222c. Preferably, the fan-shaped plate 3222c and the strip plate 3222b are integrally formed. The strip plate 3222b is narrower than the fan-shaped plate 3222c, and their outer edges are flush, causing the fan-shaped plate 3222c to protrude towards the inner side of the strip plate 3222b. This creates a recess at the connection between the fan-shaped plate 3222c and the strip plate 3222b, which is used to avoid the hinge mechanism 33. The end of the strip plate 3222b away from the fan-shaped plate 3222c is the hinge end 3222a, which extends towards the long side of the main plate 3221 and is connected to the area of ​​the apex corner 3221a of the main plate 3221 via a pivot shaft.

[0094] With this configuration, when the swing plate 3222 is retracted, the outer edges of the strip plate 3222b and the fan plate 3222c can be flush with the side edge of the main board 3221, or will not protrude from the side edge of the main board 3221. Since the fan plate 3222c protrudes towards the inside of the strip plate 3222b, when the swing plate 3222 is extended, the fan plate 3222c can largely remain stacked with the main board 3221 without quickly separating. At the same time, the two swing plates 3222 and the main board 3221 form a trapezoidal structure that is narrow at the top and wide at the bottom, to fill the trapezoidal space formed by the two first light-shielding plates 321 on both sides after they are swung down, thus achieving a better light-shielding adjustment effect.

[0095] In one embodiment, as shown in Figures 7, 12 and 17, the suspension arm body 11 has a first wiring channel 111, and the swing connector 12 includes a second wiring channel 121, which is connected to the first wiring channel 111.

[0096] The lower end of the suspension arm body 11 is connected to a first connecting sleeve 112 that communicates with the first wiring channel 111, and the swing connector 12 is provided with a second connecting sleeve 122 that communicates with the second wiring channel 121.

[0097] The second connecting sleeve 122 is connected to the first connecting sleeve 112 via a pivot shaft 13, and a pre-tightening element 14 is provided on the pivot shaft 13.

[0098] In this embodiment, the second wiring channel 121 and the first wiring channel 111 can be used for wiring.

[0099] The lower end of the suspension arm body 11 is connected to a first connecting sleeve 112, which is preferably integrally formed with the suspension arm body 11. The first connecting sleeve 112 is located below the first wiring channel 111 and communicates with the first wiring channel 111.

[0100] The top of the swing connector 12 is provided with a second connecting sleeve 122, which communicates with the second wiring channel 121. Preferably, the second connecting sleeve 122 is integrally formed with the swing connector 12. The inner opening of the second connecting sleeve 122 faces the first connecting sleeve 112, and the inner opening of the first connecting sleeve 112 faces the second connecting sleeve 122. The inner opening referred to here is the opening facing the mating point of the first connecting sleeve 112 and the second connecting sleeve 122.

[0101] The second connecting sleeve 122 is connected to the first connecting sleeve 112 via a pivot shaft 13, and the second connecting sleeve 122 is rotatable relative to the first connecting sleeve 112.

[0102] The pivot shaft 13 can be connected between the end plate of the second connecting sleeve 122 and the end plate of the first connecting sleeve 112, or between the internal support of the second connecting sleeve 122 and the internal support of the first connecting sleeve 112. The preload 14 can be selectively disposed between the pivot shaft 13 and the second connecting sleeve 122, or selectively disposed between the pivot shaft 13 and the first connecting sleeve 112, or selectively disposed simultaneously between the pivot shaft 13 and the second connecting sleeve 122 and the pivot shaft 13 and the first connecting sleeve 112.

[0103] The position of the pretensioner 14 is determined by the design of the pivot shaft 13 and the connection method between the second connecting sleeve 122 and the pivot shaft 13. The pretensioner 14 can be an elastic element, such as a spring, elastic sheet, disc spring, etc., which serves to position the swing connector 12.

[0104] In one embodiment, as shown in FIG12, the lower end of the swing connector 12 is provided with a plug sleeve 123, and the heat sink 24 in the lamp body 2 has a plug hole 241. The plug sleeve 123 is fastened in the plug hole 241. The plug sleeve 123 is interference-fitted with the hole wall of the plug hole 241, and wiring can be routed through the plug sleeve 123 to the plug hole 241 to connect with the power supply 23 below. The structural strength of the heat sink 24 is also used to withstand the tension of the suspension, reducing the tensile load on the housing of the lamp body 2 and helping to thin the housing.

[0105] In one embodiment, as shown in Figures 7-15, a light-diffusing device 23 is provided in the lamp body 2, and the light-diffusing device 23 is located below the light source 22.

[0106] The light-emitting surface of the scattering device 23 is provided with multiple corrugated scattering stripes 233, and any two adjacent scattering stripes 233 are arranged alternately. The sides and / or bottom surfaces of the scattering stripes 233 are corrugated.

[0107] The diffused light stripe 233 is located in the light outlet 20 of the lamp body 2.

[0108] In this embodiment, a light-diffusing device 23 is provided in the lamp body 2 to improve the light diffusion effect. The light-diffusing device 23 can also be called a light-diffusing lens, light-diffusing plate, etc.

[0109] The side of the diffuser 23 facing the light source is called the incident surface, and the side of the diffuser 23 emitting light is called the emitting surface. The emitting surface is not necessarily an independent surface; it is only used to clearly indicate the light path of the diffuser 23.

[0110] Multiple spaced-apart diffuser stripes 233 are provided on the light-emitting surface. The diffuser stripes 233 are wavy, meaning they are curved and extended, roughly in a wavy shape. The diffuser stripes 233 are translucent and are made of the same material as the diffuser device 23. The sides or bottom of the diffuser stripes 233 are wavy; preferably, both the sides and bottom of the diffuser stripes 233 are wavy. After light passes through a diffuse fringe 233, some light is emitted directly from the bottom surface of the diffuse fringe 233, while some light is emitted from the side surface of the diffuse fringe 233. Since the diffuse fringe 233 is wavy, the light emitted from the side surface will enter the adjacent diffuse fringe 233 for diffuse reflection again. Furthermore, since the side surface and / or bottom surface of the diffuse fringe 233 is wavy, the light emitted from the side surface and / or bottom surface will be emitted in different directions, increasing the path of diffuse reflection of the emitted light and thus improving the diffuse effect of the emitted light.

[0111] The diffused light stripe 233 is located in the light outlet 20 of the lamp body 2. After the light is diffusely reflected by the diffused light stripe 233, it is emitted directly.

[0112] In one embodiment, as shown in Figures 11 and 15, one side surface of the diffuse fringe 233 is a vertical surface 2331 and the other side surface of the diffuse fringe 233 is a curved surface 2332. After light propagates through the vertical surface 2331 and the curved surface 2332, it will be guided to undergo diffuse reflection.

[0113] The vertical surface 2331 and curved surface 2332 referred to here are viewed along the vertical direction, but in reality, the vertical surface 2331 and curved surface 2332 are curved surfaces in the direction of extension of the diffused light stripe 233.

[0114] In one embodiment, as shown in Figures 7-15, the astigmatism device 23 includes a light guide plate 232, with astigmatism stripes 233 disposed on the bottom surface of the light guide plate 232; or, the astigmatism device 23 includes a conical lens 231, with the radius of the conical lens 231 gradually increasing along the top-to-bottom direction.

[0115] The top surface of the conical lens 231 is provided with an incident light groove 234, the groove wall surface of the incident light groove 234 is curved, and the astigmatic stripes 233 are provided on the bottom surface of the conical lens 231.

[0116] In this embodiment, the light-diffusing device 23 can be a flat light guide plate 232 or a conical lens 231 to meet different installation requirements.

[0117] If the diffuser 23 uses a flat light guide plate 232, then as shown in Figure 12, the light guide plate 232 is directly installed near the light outlet 20 of the lamp body 2, the light source 22 is close to the light outlet 20 of the lamp body 2, and the diffuser stripes 233 extend into the light outlet 20.

[0118] If the diffuser 23 uses a conical lens 231, then as shown in Figure 7, the conical lens 231 is installed in the lamp body 2, the light source 22 is close to the top plate of the lamp body 2, the conical lens 231 extends toward the light outlet 20 of the lamp body 2, and the diffuser stripes 233 extend into the light outlet 20.

[0119] The light source 22 is aligned with the light-incident groove 234. The light is directed towards the light-incident groove 234. Part of the light is directed towards the bottom surface of the light-incident groove 234, and part of the light is directed towards the surface of the groove wall of the light-incident groove 234. Since the surface of the groove wall is curved, it will guide the part of the light to produce diffuse reflection, which is beneficial to improve the diffused light effect.

[0120] In one embodiment, as shown in Figures 10-11, a conical incident groove 235 is provided at the center of the bottom of the incident groove 234, and the radius of the conical incident groove 235 gradually decreases along the top-to-bottom direction. A portion of the light incident on the bottom surface of the incident groove 234 will then be incident on the conical incident groove 235. Under the action of the conical surface of the conical incident groove 235, this portion of light will undergo diffuse reflection, which helps to improve the astigmatism effect.

[0121] In one embodiment, the scattering stripe 233 is integrally formed with the scattering device 23, which has high structural strength and is seamlessly connected to facilitate the transmission of light from the scattering device 23 to the scattering stripe 233.

[0122] In one embodiment, the diffuse stripe 233 protrudes from the light-emitting surface of the diffuser 23 so that the diffuse stripe 233 extends into the light-emitting port 20, and the light is directly emitted after diffuse reflection by the diffuse stripe 233.

[0123] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0124] The above are merely the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several other modifications can be made based on the principles of the present invention, and these modifications should also be considered within the scope of protection of the present invention.

Claims

1. A lighting device, characterized in that, It includes a suspension arm, a lamp body with a light source, and a light shield connected in sequence; The suspension arm includes a suspension arm body and a swing connector pivotally connected to the suspension arm body, the swing connector being connected to the top of the lamp body; The light shield includes a connecting frame sleeved on the lamp body and a light shield assembly disposed on the outer peripheral surface of the connecting frame. The light-shielding plate assembly includes multiple first light-shielding plates with constant area and multiple second light-shielding plates with adjustable area; The first light-shielding plate and the second light-shielding plate are arranged sequentially at intervals along the outer periphery of the connecting frame. The first light-shielding plate and the second light-shielding plate are respectively connected to the connecting frame through a hinge mechanism. The first light-shielding plate and the second light-shielding plate can be adjusted up and down relative to the connecting frame.

2. The lighting device according to claim 1, characterized in that, The second light-shielding plate includes a main board connected to the hinge mechanism and a swing plate pivotally connected to the main board; The motherboard is equipped with a swing plate on each of its front and back sides, and the two swing plates are arranged opposite to each other. When the two swing plates are in the retracted state, the two swing plates are respectively stacked on the front and back sides of the main board; When the two swing plates are in the unfolded state, the two swing plates extend from the two side edges of the main board, respectively.

3. The lighting device according to claim 2, characterized in that, The first light-shielding plate and the main board are both in the shape of an isosceles trapezoid; The short side of the first light-shielding plate is connected to the hinge mechanism, and the long side of the main board is connected to the hinge mechanism. The pivot ends of the two swing plates are respectively hinged to the two apex corners of the main plate.

4. The lighting device according to claim 3, characterized in that, The swing plate includes a strip plate and a fan-shaped plate connected to the strip plate. The outer edge of the strip plate is flush with the outer edge of the fan-shaped plate, and the end of the strip plate away from the fan-shaped plate is hinged to the top corner of the main plate.

5. The lighting device according to any one of claims 1-4, characterized in that, The main body of the suspension arm has a first wiring channel, and the swing connector includes a second wiring channel, which is connected to the first wiring channel. The lower end of the main body of the suspension arm is connected to a first connecting sleeve that communicates with the first wiring channel, and the swing connector is provided with a second connecting sleeve that communicates with the second wiring channel; The second connecting sleeve is connected to the first connecting sleeve via a pivot shaft, and a pre-tightening element is provided on the pivot shaft.

6. The lighting device according to any one of claims 1-4, characterized in that, The lower end of the swing connector is provided with a plug sleeve, and the heat sink in the lamp body has a plug hole, and the plug sleeve is fastened in the plug hole.

7. The lighting device according to any one of claims 1-4, characterized in that, The lamp body is equipped with a light-diffusing device, which is located below the light source; The light-emitting surface of the diffuser is provided with multiple wavy diffuser stripes, and any two adjacent diffuser stripes are arranged alternately. The sides and / or bottom surfaces of the diffuser stripes are wavy. The diffused light stripes are located in the light outlet of the lamp body.

8. The lighting device according to claim 7, characterized in that, Along the vertical direction, one side of the diffused light stripe is a vertical surface, and the other side of the diffused light stripe is a curved surface.

9. The lighting device according to claim 7, characterized in that, The light-scattering device includes a light guide plate, and the light-scattering stripes are disposed on the bottom surface of the light guide plate; or, The astigmatism device includes a conical lens, the radius of which gradually increases along the top-to-bottom direction; The top surface of the conical lens is provided with an incident light groove, the groove wall surface of which is curved, and the astigmatic stripes are provided on the bottom surface of the conical lens.

10. The lighting device according to claim 9, characterized in that, The center of the bottom of the light-incident groove is provided with a conical incident groove, and the radius of the conical incident groove gradually decreases along the direction from top to bottom.

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