Lighting device

Abstract

The utility model discloses a lighting device, which belongs to the technical field of lighting facilities and comprises an annular cover body, a first light-emitting component and a light guide element, wherein the light guide element is arranged in the annular cover body and extends in the circumferential direction of the annular cover body, and the light guide element is provided with a cut-off groove used for cutting off light rays so that the light guide element can be divided into at least two light guide sections in the circumferential direction of the light guide element; each light guide section corresponds to at least one first light-emitting assembly, each first light-emitting assembly faces the corresponding light guide section and is used for emitting light to the corresponding light guide section, and at least part of the light emitted by the first light-emitting assembly is emitted from the side, close to the center of the annular cover body, of the light guide section to simulate sunlight. The lighting device provided by the utility model not only can provide illumination for a user, but also can simulate the sun, and can bring richer lighting effects for the user.

Description

Technical Field

[0001] The present application belongs to the technical field of lighting facilities, and specifically relates to a lighting device. Background Art

[0002] Lighting devices provide us with the necessary first light-emitting components, and they play a vital role in our work and life. With the continuous development of science and technology and the improvement of the quality of life, people's requirements for lighting devices are getting higher and higher. For example, some users currently hope that lighting devices can not only provide basic lighting functions, but also expect them to simulate the sun to bring richer lighting effects. However, traditional lighting devices usually only have basic lighting functions and cannot meet these more advanced requirements.

[0003] Therefore, how to provide a lighting device that can simulate the sun has become a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a lighting device that can solve the problem that traditional lighting devices in the related art cannot simulate the sun.

[0005] The embodiment of the present application provides a lighting device, comprising: an annular cover, a first light-emitting component and a light-guiding element;

[0006] The light guide element is arranged inside the annular cover body and extends along the circumference of the annular cover body. The light guide element is provided with a cut-off groove for cutting off light, so as to separate the light guide element into at least two light guide segments along the circumference of the light guide element.

[0007] Each of the light guide segments corresponds to at least one of the first light-emitting components, and each of the first light-emitting components is oriented toward the corresponding light guide segment and is used to emit light to the corresponding light guide segment, and at least part of the light emitted by the first light-emitting component is emitted from one side of the light guide segment close to the center of the annular cover to simulate sunlight.

[0008] In the embodiment of the present application, when the lighting device is in use, turning on the first light-emitting component can light up the corresponding light guide segment. In addition, light is emitted from one side of the light guide segment close to the center of the annular cover. In this way, when the user looks up at the lighting device, the lit light guide segment can provide the user with a feeling similar to looking up at the sun, so that the lighting device provided in the embodiment of the present application can simulate the sun. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic structural diagram of the lighting device disclosed in the embodiment of the present application at a first viewing angle;

[0010] Figure 2It is a schematic structural diagram of the lighting device disclosed in the embodiment of the present application at a second viewing angle;

[0011] Figure 3 A cross-sectional view of the lighting device disclosed in the embodiment of the present application;

[0012] Figure 4 for Figure 3 The main view;

[0013] Figure 5 for Figure 4 A magnified view of part I;

[0014] Figure 6 A schematic diagram of a partial structure of a lighting device disclosed in an embodiment of the present application;

[0015] Figure 7 A schematic diagram of the structure of a light guide element disclosed in an embodiment of the present application;

[0016] Figure 8 It is a structural schematic diagram of the light guide element disclosed in the embodiment of the present application when it is in a flattened state;

[0017] Fig. 9 An internal light path diagram of a light guide element disclosed in an embodiment of the present application;

[0018] Fig.10 A processing flow chart of the light guide element disclosed in the embodiment of the present application;

[0019] Fig.11 A schematic diagram of a light guide element disclosed in an embodiment of the present application when light guide uniformity is qualified;

[0020] Fig.12 A schematic diagram of a light guide element disclosed in an embodiment of the present application when the light guide uniformity is unqualified;

[0021] Fig.13 A schematic diagram of a first state of a window shadow disclosed in an embodiment of the present application;

[0022] Fig.14 A schematic diagram of a second state of a window shadow disclosed in an embodiment of the present application;

[0023] Fig.15 This is a schematic diagram of the third state of the window shadow disclosed in the embodiment of the present application.

[0024] Description of reference numerals:

[0025] 100-annular cover, 110-supporting part, 120-connecting frame;

[0026] 200-first light-emitting component;

[0027] 300-light guide element, 310-light guide segment, 320-cut-off groove, 321-first groove segment, 322-second groove segment, 330-first light guide portion, 340-second light guide portion, 341-light guide point, 351-first light guide segment, 352-second light guide segment, 353-third light guide segment, 354-fourth light guide segment, 355-fifth light guide segment, 361-window shadow, 362-virtual image;

[0028] 400- second light emitting component;

[0029] 500-transparent element;

[0030] 600 - a second light diffusion element;

[0031] 710-top plate, 720-support ring, 721-flange;

[0032] 800 - a second reflective element;

[0033] 900 - first light diffusion element. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0035] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0036] The lighting device provided in the embodiment of the present application is described in detail below through specific embodiments and application scenarios in conjunction with the accompanying drawings.

[0037] Please refer to Figures 1 to 9 As shown, the embodiment of the present application discloses a lighting device, specifically, the lighting device is one of a blue sky lamp, a ceiling lamp, a lamp panel or a canopy. More specifically, the disclosed lighting device includes: an annular cover 100, a first light-emitting component 200 and a light-guiding element 300.

[0038] The light guide element 300 is disposed inside the annular cover 100 and extends along the circumference of the annular cover 100. The axis of the light guide element 300 may coincide with the axis of the annular cover 100. The light guide element 300 is provided with a cut-off groove 320 for cutting off light, so as to separate the light guide element 300 into at least two light guide segments 310 along the circumference of the light guide element 300.

[0039] Each light guide segment 310 corresponds to at least one first light emitting component 200, for example, there is a one-to-one correspondence between the light guide segment 310 and the first light emitting component 200, or one light guide segment 310 may correspond to at least two first light emitting components 200. Each first light emitting component 200 faces the corresponding light guide segment 310 and is used to emit light to the corresponding light guide segment 310, and at least part of the light emitted by the first light emitting component 200 is emitted from one side of the light guide segment 310 close to the center of the annular cover 100 to simulate sunlight.

[0040] In the embodiment of the present application, when the lighting device is in use, turning on the first light-emitting component 200 can light up the corresponding light guide segment 310. In addition, light is emitted from the side of the light guide segment 310 close to the center of the annular cover 100. In this way, when the user looks up at the lighting device, the lit light guide segment 310 can provide the user with a feeling similar to looking up at the sun, so that the lighting device provided in the embodiment of the present application can simulate the sun.

[0041] For the convenience of description, the illuminated light guide segment 310 is referred to as the window shadow 361 below. When the sun rotates around the axis of the annular cover 100, the two boundary lines of the window shadow 361 in the circumferential direction of the annular cover 100 (the irradiation angle of the sunlight) should be symmetrical about the axis of the annular cover 100. In order to simulate the irradiation effect, in another embodiment, the light guide element 300 is, for example, an annular structure, the axis of the light guide element 300 coincides with the axis of the annular cover 100, the cut-off grooves 320 are arranged in pairs, and any pair of the cut-off grooves 320 are symmetrical about the axis of the annular cover 100.

[0042] During specific use, when the light guide segments 310 between the same pair of cut-off grooves 320 are all lit, the two positions corresponding to the pair of cut-off grooves 320 will form a cut-off line, that is, the above-mentioned boundary line. Since the two cut-off grooves 320 are symmetrical about the axis of the annular cover body 100, the two cut-off lines are also symmetrical about the axis of the annular cover body 100. Therefore, the scheme adopted in this embodiment can more accurately simulate the corresponding illumination effect when the sun rotates around the axis of the annular cover body 100.

[0043] In other optional embodiments, the same pair of cut-off grooves 320 may also be in an asymmetrical relationship.

[0044] In another embodiment, the two ends of the cut-off groove 320 are respectively flush with the two ends in the axial direction of the light guide element 300, and in the radial direction of the light guide element 300, the cut-off groove 320 extends from the middle position of the light guide element 300 to the side of the light guide element 300 close to the center of the annular cover body 100 and the side of the light guide element 300 away from the center of the annular cover body 100, that is, the cut-off groove 320 is divided into two parts, one part extends from the middle position of the light guide element 300 to the side of the light guide element 300 close to the center of the annular cover body 100, and the other part extends from the middle position of the light guide element 300 to the side of the light guide element 300 away from the center of the annular cover body 100.

[0045] In other optional embodiments, in the radial direction of the light guide element 300, the cut-off groove 320 may also extend from the side of the light guide element 300 close to the center of the annular cover body 100 to the side of the light guide element 300 far from the center of the annular cover body 100. Compared with the scheme in the previous embodiment, in which the cut-off groove 320 extends from the middle position of the light guide element 300 to the side of the light guide element 300 close to the center of the annular cover body 100 and the side of the light guide element 300 far from the center of the annular cover body 100, the scheme adopted in this embodiment is simpler to position during processing, so that the scheme adopted in this embodiment is more convenient to process the cut-off groove 320.

[0046] In another embodiment, the lighting device further includes a first reflective element, and the first reflective element is provided in at least one cut-off groove 320, and the first reflective element is, for example, a first reflective paper. The reflective element can block the propagation of light, so that compared with not providing the first reflective element, adding the first reflective element can make the cut-off line formed corresponding to the cut-off groove 320 clearer, and further, the cut-off line can indicate the irradiation angle of sunlight, so that the user can see the irradiation angle of sunlight more clearly.

[0047] In other optional embodiments, the lighting device may not include the first reflective element.

[0048] In a further embodiment, based on the lighting device including the first reflective element, the cut-off groove 320 can also extend from the side of the light guide element 300 close to the center of the annular cover 100 to the side of the light guide element 300 away from the center of the annular cover 100.

[0049] In another embodiment, in the radial direction of the light guide element 300, the cut-off groove 320 penetrates the light guide element 300, that is, the cut-off groove 320 extends to the side of the light guide element 300 away from the center of the annular cover 100, so that the adjacent light guide segments 310 are arranged separately. In the solution adopted in this embodiment, the adjacent light guide segments 310 are arranged separately and are completely separated from each other. Compared with the solution in which two adjacent light guide segments 310 are partially connected, the solution adopted in this embodiment can form a clearer cut-off line.

[0050] Furthermore, the first light reflecting element mentioned above may be disposed in the cut-off groove 320 .

[0051] In another embodiment, the bottom of the cut-off groove 320 is spaced apart from a side of the light-guiding element 300 away from the center of the annular cover body 100, that is, the cut-off groove 320 does not fully extend to the side of the light-guiding element 300 away from the center of the annular cover body 100. At this time, the two adjacent light-guiding segments 310 are partially connected. Compared with the split arrangement of the two adjacent light-guiding segments 310, when installing the light-guiding element 300, the scheme adopted in this embodiment does not need to locate the positional relationship between the two adjacent light-guiding segments 310, so that the scheme adopted in this embodiment can complete the installation of the light-guiding element 300 more conveniently and quickly.

[0052] Furthermore, the first light reflecting element mentioned above is disposed in the cut-off groove 320 .

[0053] In a further embodiment, the cut-off groove 320 includes, for example, a first groove section 321 and a second groove section 322, one end of the first groove section 321 is flush with the top of the light guide element 300, and the extension direction of the first groove section 321 is parallel to the axial direction of the annular cover body 100, one end of the second groove section 322 is connected to the first groove section 321, and the other end of the second groove section 322 extends to the bottom end of the light guide element 300, and as Figure 8 As shown, when the light guide element 300 is in a flattened state, a non-zero angle is formed between the second slot segment 322 and the first slot segment 321 to simulate the irradiation angle of sunlight.

[0054] The solution adopted in this embodiment forms a corner at the intersection of the first groove segment 321 and the second groove segment 322. In this way, when it is necessary to assemble two separately arranged light guide segments 310 together, the position between the two adjacent light guide segments 310 can be located with the help of the corner, so that the two adjacent light guide segments 310 can be assembled together more conveniently and quickly.

[0055] Optionally, in other embodiments, the extending direction of the first slot segment 321 and the extending direction of the second slot segment 322 may also be the same.

[0056] In another embodiment, reference Fig. 9As shown, the light guiding element 300 includes a first light guiding portion 330 and a second light guiding portion 340 which are sequentially arranged along the axial direction of the annular cover body 100, one end of the first light guiding portion 330 faces the first light-emitting component 200 so that the light emitted by the first light-emitting component 200 enters the first light guiding portion 330, and the first light guiding portion 330 is used to make the light propagate inside the first light guiding portion 330 and to make the light emit from the end of the first light guiding portion 330 away from the first light-emitting component 200, one end of the second light guiding portion 340 faces the end of the first light guiding portion 330 away from the first light-emitting component 200 so that the light enters the second light guiding portion 340, and the second light guiding portion 340 is used to make at least part of the light emit from the side of the second light guiding portion 340 close to the center of the annular cover body 100.

[0057] The solution adopted in this embodiment is that the light propagates inside the first light guide portion 330, that is, during the process of total reflection of the light in the first light guide portion 330, the first light guide portion 330 can adjust the light to make the light distribution more uniform. Therefore, the solution adopted in this embodiment can make the light emitted from the side of the second light guide portion 340 close to the center of the annular cover body 100 more uniform, and thus the lighting device provided in this embodiment can better simulate sunlight.

[0058] As a specific implementation, the first light guide portion 330 and the second light guide portion 340 are both made of light guide material, for example. More specifically, the first light guide portion 330 and the second light guide portion 340 are both made of acrylic material, for example. Fig. 9 As shown, for example, by setting a light guide point 341 on the side of the second light guide portion 340 away from the center of the annular cover body 100, the uniformity of the light can be adjusted, and the light can be emitted from the side of the second light guide portion 340 close to the center of the annular cover body 100. At the same time, by not setting a light guide point 341 on the side of the first light guide portion 330 away from the center of the annular cover body 100, the light can be kept propagating inside the first light guide portion 330, and not emitted from the side of the first light guide portion 330 close to the center of the annular cover body 100 and the side of the first light guide portion 330 away from the center of the annular cover body 100. More specifically, the light guide point 341 is, for example, a spherical pit. It should be noted that Fig. 9 The middle arrow indicates the propagation direction of the light emitted by the first light-emitting component 200 .

[0059] In another embodiment, if Figure 6 As shown, a second reflective element 800 is provided on the side of the light guide element 300 away from the center of the annular cover 100. The second reflective element 800 is, for example, a second reflective paper. The second reflective element 800 can reflect the light emitted from the side of the light guide element 300 away from the center of the annular cover 100, so that the part of the light is re-injected into the light guide element 300, so that the solution adopted in this embodiment can improve the utilization rate of light. It should be noted that Figure 6 The direction indicated by the middle arrow is the propagation direction of the light emitted by the first light-emitting component 200 .

[0060] Optionally, in other embodiments, the second reflective element 800 may not be provided.

[0061] In a further embodiment, on the basis that a second light reflecting element 800 is provided on a side of the light guiding element 300 away from the center of the annular cover 100 , the light guiding element 300 may further include the first light guiding portion 330 and the second light guiding portion 340 described above.

[0062] In a further embodiment, a second reflective element 800 is provided on the side of the light guiding element 300 away from the center of the annular cover body 100, and the light guiding element 300 includes the first light guiding part 330 and the second light guiding part 340 described above, and the cut-off groove 320 may include the first groove section 321 and the second groove section 322 described above.

[0063] refer to Fig.10 As shown, the processing method of the light guide element 300 provided in this embodiment includes the following steps, for example:

[0064] S101, obtaining a light guide plate of a preset shape through a cutting process;

[0065] S102, processing light guide points 341 on the light guide plate;

[0066] S103, cutting the light guide plate in sequence along the length direction of the light guide plate to form a plurality of cut-off grooves 320;

[0067] S104, attaching a second light reflecting element 800 to the entire surface of one side of the light guide plate;

[0068] S105, testing the light guiding uniformity of the light guiding plate having the second light reflecting element 800 attached thereto;

[0069] S106, when the light guiding uniformity is qualified, the light guiding plate with the second light reflecting element 800 attached thereto is thermally bent to obtain a light guiding element 300 of a desired shape; when the light guiding uniformity is unqualified, the above steps S101 to S105 are repeated;

[0070] S107, assembling the light guide element 300 and other parts of the lighting device together;

[0071] S108, testing the lighting effect of the lighting device.

[0072] It should be noted that in step S106, when two adjacent light guide segments 310 are lit, if there is no shadow area between the two adjacent light guide segments 310, that is, the brightness of the corresponding position of the cut-off groove 320 between the two adjacent light guide segments 310 is consistent with the brightness of other positions of the light guide segments 310, it means that the light guide uniformity of the light guide element 300 is qualified, otherwise, it means that it is unqualified. Specifically, Fig.11 The state shown indicates that the light guiding uniformity of the light guiding element 300 is qualified. Fig.12 The illustrated state indicates that the light guiding uniformity of the light guiding element 300 is unacceptable.

[0073] In addition, in step S106 , when no first light reflecting element is provided in the cut-off groove 320 , the light guiding uniformity of the light guiding element 300 can meet the preset requirements by adjusting the arrangement positions and density of the light guiding points 341 .

[0074] In another embodiment, the lighting device also includes: a second light-emitting component 400 and a first light diffuser element 900, the first light diffuser element 900 is located on a side of the light-guiding element 300 close to the center of the annular cover 100, the second light-emitting component 400 is directed toward the first light diffuser element 900, and is used to emit light to the first light diffuser element 900, and at least part of the light emitted by the second light-emitting component 400 is emitted from the first light diffuser element 900 toward the side of the bottom of the annular cover 100 to simulate sky light.

[0075] In this embodiment, at least part of the light emitted by the second light-emitting component 400 is diffused by the first light diffuser element 900 and then emitted toward the bottom of the annular cover 100. By controlling the color of the light emitted by the second light-emitting component 400, for example, making the second light-emitting component 400 emit blue light, when the user looks up at the lighting device, the part of the light emitted toward the bottom of the annular cover 100 can provide the user with a visual effect similar to looking up at the sky, so that the lighting device can provide the user with a richer illumination effect.

[0076] In other optional embodiments, the lighting device may not be provided with the second light-emitting component 400 and the first light diffusion element 900 .

[0077] In a further embodiment, the first light emitting component 200 and the second light emitting component 400 each include a plurality of lamp beads, each lamp bead has a spectrum, and the spectrums of the lamp beads are the same. In this way, the first light emitting component 200 and the second light emitting component 400 can only emit light of a single color.

[0078] In other optional embodiments, the first light-emitting component 200 and the second light-emitting component 400 may each include at least three lamp beads with different spectra. In this way, the first light-emitting component 200 and the second light-emitting component 400 can both emit at least three colors of light. In this way, compared with the first light-emitting component 200 and the second light-emitting component 400 both emitting only a single color of light, the lighting device adopted in this embodiment can provide a richer lighting effect.

[0079] During specific use, by selecting lamp beads with suitable spectra, for example, the second light-emitting component 400 can emit blue light and white light. Furthermore, by adjusting the arrangement positions of lamp beads with different spectra, some lamp beads can emit blue light and the remaining lamp beads can emit blue light. The second light-emitting component 400 can simultaneously simulate the visual effect corresponding to the blue sky and the visual effect corresponding to white clouds.

[0080] As a specific implementation, the first light-emitting component 200 and the second light-emitting component 400, for example, each include 6 lamp beads, and the spectra of two of the 6 lamp beads are the first spectrum, the spectra of two of the remaining four lamp beads are the second spectrum, and the spectra of the remaining two lamp beads are the third spectrum, and the first spectrum, the second spectrum and the third spectrum are different from each other.

[0081] Furthermore, as mentioned above, by selecting lamp beads with appropriate spectrum and adjusting the arrangement positions of lamp beads with different spectrums, the second light-emitting component 400 can also simulate the visual effect corresponding to the rainbow.

[0082] In addition, by adjusting the brightness of the lamp beads, the brightness of the light emitted by the first light-emitting component 200 can be adjusted, thereby simulating sunlight at different times.

[0083] Furthermore, for the lamp beads of the same spectrum, the distance between each lamp bead and the first light diffuser 900 is, for example, equal, and the distance between any two adjacent lamp beads of the same spectrum is, for example, equal. For the convenience of description, for the lamp beads of the same spectrum, the distance between each lamp bead and the first light diffuser 900 is the first distance, and the distance between any two adjacent lamp beads of the same spectrum is the second distance. The ratio of the second distance to the first distance is, for example, 0.5 to 1.1, so as to ensure a better lighting effect.

[0084] In another embodiment, the lighting device further includes a transparent element 500 , and the transparent element 500 is, for example, a plate-shaped structure.

[0085] The transparent element 500 is located inside the annular cover 100 and on one side of the light guide element 300 close to the center of the annular cover 100 . One side of the transparent element 500 faces the first light diffuser 900 , and the other side faces the bottom of the annular cover 100 .

[0086] During specific use, the transparent element 500 can mirror the window shadow 361 formed by the light guide element 300 to form a virtual image 362. In this way, the window shadow 361 can be made deeper, thereby visually providing the user with a deep space effect.

[0087] Optionally, in other embodiments, the lighting device may not be provided with the transparent element 500 .

[0088] In a further embodiment, the lighting device further includes: a second light diffusing element 600 , and the second light diffusing element 600 is, for example, a plate-shaped structure.

[0089] Among them, the second light diffuser element 600 is located inside the annular cover body 100, and the second light diffuser element 600 is located on the side of the light guide element 300 close to the center of the annular cover body 100 to diffuse the light emitted from the side of the light guide segment 310 close to the center of the annular cover body 100, the first light diffuser element 900 is located on the side of the second light diffuser element 600 close to the center of the annular cover body 100; the transparent element 500 is located on the side of the second light diffuser element 600 close to the center of the annular cover body 100.

[0090] In this embodiment, by providing the second light diffusion element 600 , the light emitted from the side of the light guide segment 310 close to the center of the annular cover 100 can be more divergent, thereby making the light more uniform and the lighting device can better simulate sunlight.

[0091] In other optional embodiments, the lighting element may not include the second light diffusing element 600 .

[0092] In a further embodiment, the second light diffusing element 600 is, for example, spaced apart from the light guiding element 300. With such a configuration, the second light diffusing element 600 can better control the diffusion range and uniformity of light, thereby better simulating sunlight.

[0093] In other embodiments, the second light diffuser 600 may also be bonded to the light guide element 300 .

[0094] In a further embodiment, Figures 3 to 6 As shown, the lighting device further includes a top plate 710 and a supporting ring 720 .

[0095] The top plate 710 is connected to the annular cover 100 and is opposite to the first light diffuser 900 . Each second light emitting assembly 400 is disposed on a side of the top plate 710 facing the first light diffuser 900 .

[0096] The support ring 720 is disposed inside the annular cover 100, one end of the support ring 720 abuts against the top plate 710, and the other end abuts against the first light diffuser 900. The first light diffuser 900 is fitted with the transparent element 500, and the transparent element 500 and the second light diffuser 600 are matched in the upper limit position in the axial direction of the annular cover 100. A support portion 110 is disposed at the bottom end of the annular cover 100, and the second light diffuser 600 and the support portion 110 are matched in the upper limit position in the axial direction of the annular cover 100.

[0097] In the solution adopted in this embodiment, the first light diffuser element 900 and the transparent element 500 are mutually limited in the axial direction of the annular cover body 100, and the transparent element 500 and the second light diffuser element 600 are mutually limited in the axial direction of the annular cover body 100. In this way, there is no need to add other limiting structures to achieve the limitation of the first light diffuser element 900, the second light diffuser element 600 and the transparent element 500 in the axial direction of the annular cover body 100, so that the solution adopted in this embodiment can make the overall structure of the lighting device simpler.

[0098] Optionally, in other embodiments, the lighting device may further include a first limiting structure, a second limiting structure, a third limiting structure and a fourth limiting structure on the basis of the top plate 710, the support ring 720 and the support portion 110 described above, and the first limiting structure is used to cooperate with the bottom surface of the first light diffuser to limit the position in the axial direction of the annular cover body 100 to achieve the limiting of the first light diffuser element 900 in the axial direction of the annular cover body 100, the second limiting structure and the third limiting structure are used to cooperate with the top and bottom surfaces of the transparent element 500 respectively to achieve the limiting of the transparent element 500 in the axial direction of the annular cover body 100, and the fourth limiting structure is used to cooperate with the top surface of the transparent element 500 to limit the position of the transparent element 500 in the axial direction of the annular cover body 100.

[0099] In a further embodiment, the transparent element 500 and the second light diffuser element 600 can be magnetically attracted to achieve upper limit fit in the axial direction of the annular cover 100 .

[0100] In other embodiments, Figure 3 As shown, the inner wall of the second light diffuser 600 may also have a limiting step, and the transparent element 500 is abutted against the limiting step to achieve the upper limit matching of the transparent element 500 and the second light diffuser 600 in the axial direction of the annular cover 100. Compared with the magnetic connection method, the solution adopted in this embodiment is not affected by the external magnetic field, so the transparent element 500 adopted in this embodiment has better stability.

[0101] In another embodiment, each first light emitting assembly 200 is disposed on a side of the light guide element 300 away from the center of the annular cover 100 , and the first light emitting assembly 200 and the light guide element 300 are arranged sequentially in the radial direction of the annular cover 100 .

[0102] In other optional embodiments, reference Figure 4 and Figure 5 As shown, the outer side wall of the support ring 720 may be provided with a flange 721 extending in the radial direction of the support ring 720 in a direction away from the center of the support ring 720, and each first light-emitting assembly 200 may be provided on a side of the flange 721 away from the top plate 710, and each first light-emitting assembly 200 may be opposite to the end surface of the corresponding light-guiding segment 310 facing the top plate 710. In this way, the first light-emitting assembly 200 and the light-guiding element 300 are arranged in sequence in the axial direction of the annular cover 100. Compared with the arrangement of the first light-emitting assembly 200 and the light-guiding element 300 in sequence in the radial direction of the annular cover 100, the solution adopted in this embodiment has a shorter length in the radial direction of the annular cover 100, so that the lighting device occupies less space in its radial direction.

[0103] In a further embodiment, each first light emitting assembly 200 is opposite to the end surface of the corresponding light guide segment 310 facing the top plate 710, and the light guide segment 310 includes the first slot segment 321 and the second slot segment 322 described above, and the light guide element 300 is, for example, an annular structure, and the annular structure is, for example, composed of Figure 7 The semi-circular arc structures shown are spliced ​​together, and the two semi-circular arc structures are symmetrical about the axis of the annular cover body 100. Each semi-circular arc structure includes, for example, 5 light guide segments 310, and along the circumference of the annular cover body 100, the 5 light guide segments 310 are, for example, respectively a first light guide segment 351, a second light guide segment 352, a third light guide segment 353, a fourth light guide segment 354, and a fifth light guide segment 355, wherein the first light guide segment 351 and the fifth light guide segment 355 are symmetrical about the axis of the annular cover body 100, and the second light guide segment 352 and the fourth light guide segment 354 are symmetrical about the axis of the annular cover body 100. When in a flattened state, the semi-circular arc structure is, for example, as shown in FIG. 8, and when in a flattened state, the angle between the second groove segment 322 of the third light guide segment 353 and the top end face of the third light guide segment 353 is, for example, 45 degrees, as shown in FIG. Figure 8 As shown in FIG. 1B; the angle between the second groove section 322 of the second light guide section 352 and the top end surface of the second light guide section 352 is 67.5 degrees, as shown in FIG. Figure 8As shown in A; the angle between the second slot segment 322 of the fourth light guiding segment 354 and the top end face of the fourth light guiding segment 354 is, for example, 67.5 degrees; the first slot segment 321 and the second slot segment 322 of the first light guiding segment 351 are both perpendicular to the top end face of the first light guiding segment 351; the first slot segment 321 and the second slot segment 322 of the fifth light guiding segment 355 are both perpendicular to the top end face of the fifth light guiding segment 355.

[0104] In specific use, for example Fig.13 As shown, the sun at 8 o'clock in the morning can be simulated by lighting up the third light guide segment 353 of one of the semicircular arc structures; Fig.14 As shown, the sun at 10 o'clock in the morning can be simulated by lighting up the third light guide segment 353, the second light guide segment 352 and the fourth light guide segment 354 of one of the semicircular arc structures together; Fig.15 As shown, the sun at 12 o'clock noon can be simulated by lighting up the light guide segments 310 corresponding to one of the semi-circular arc structures. In addition, the sun at 10 o'clock in the morning can be simulated by lighting up the second light guide segment 352, the third light guide segment 353 and the fourth light guide segment 354 of one of the semi-circular arc structures, and then lighting up the third light guide segment 353 of the other semi-circular arc structure after a preset time to simulate the sun at 4 o'clock in the afternoon, thereby simulating the movement trajectory of the sun.

[0105] In another embodiment, the lighting device further includes a connecting frame 120, which is disposed on the top plate 710 described above, and is used to connect to an installation base, such as a ceiling. In the solution adopted in this embodiment, the connecting frame 120 can connect the lighting device to the installation base more stably, thereby improving the reliability of the connection between the lighting device and the ceiling.

[0106] In other optional embodiments, the lighting device may not include the connecting frame 120 .

[0107] It should be noted that the directional words such as "top" and "bottom" in the embodiments of the present application refer to the lighting device provided in the embodiments of the present application according to the Figure 4 The arrangement shown refers to the arrangement shown.

[0108] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A lighting device, characterized in that: include: An annular cover (100), a first light-emitting component (200) and a light-guiding element (300); The light guide element (300) is arranged inside the annular cover (100) and extends along the circumference of the annular cover (100); the light guide element (300) is provided with a cut-off groove (320) for cutting off light, so as to separate the light guide element (300) into at least two light guide segments (310) along the circumference of the light guide element (300); Each of the light guide segments (310) corresponds to at least one of the first light emitting components (200); each of the first light emitting components (200) faces the corresponding light guide segment (310) and is used to emit light to the corresponding light guide segment (310); and at least part of the light emitted by the first light emitting component (200) is emitted from a side of the light guide segment (310) close to the center of the annular cover (100) to simulate sunlight.

2. The lighting device according to claim 1, characterized in that: The light guide element (300) is an annular structure, the axis of the light guide element (300) coincides with the axis of the annular cover (100), the cut-off grooves (320) are arranged in pairs, and any pair of the cut-off grooves (320) are symmetrical about the axis of the annular cover (100).

3. The lighting device according to claim 1, characterized in that: The two ends of the cut-off groove (320) are respectively flush with the two ends of the light guide element (300) in the axial direction, and in the radial direction of the light guide element (300), the cut-off groove (320) extends from a side of the light guide element (300) close to the center of the annular cover (100) to a side of the light guide element (300) far from the center of the annular cover (100); And / or, the lighting device further comprises a first light reflecting element, and the first light reflecting element is arranged in at least one of the cut-off grooves (320).

4. The lighting device according to claim 3, characterized in that: The bottom of the cut-off groove (320) is spaced apart from a surface of the light-guiding element (300) away from the center of the annular cover body (100); Alternatively, in the radial direction of the light guide element (300), the cut-off groove (320) passes through the light guide element (300), so that adjacent light guide segments (310) are arranged separately.

5. The lighting device according to claim 3, characterized in that: The cut-off groove (320) comprises a first groove section (321) and a second groove section (322); one end of the first groove section (321) is flush with the top end of the light-guiding element (300), and the extension direction of the first groove section (321) is parallel to the axial direction of the annular cover (100); one end of the second groove section (322) is connected to the first groove section (321), and the other end of the second groove section (322) extends to the bottom end of the light-guiding element (300); and when the light-guiding element (300) is in a flattened state, a non-zero angle is formed between the second groove section (322) and the first groove section (321) to simulate the irradiation angle of the sunlight.

6. The lighting device according to claim 1, characterized in that: The light guide element (300) comprises a first light guide portion (330) and a second light guide portion (340) which are sequentially arranged along the axial direction of the annular cover (100); one end of the first light guide portion (330) faces the first light-emitting component (200) so that the light emitted by the first light-emitting component (200) enters the first light guide portion (330); the first light guide portion (330) is used to make the light propagate inside the first light guide portion (330) and to make the light emit from the end of the first light guide portion (330) away from the first light-emitting component (200); one end of the second light guide portion (340) faces the end of the first light guide portion (330) away from the first light-emitting component (200) so that the light enters the second light guide portion (340); the second light guide portion (340) is used to make at least part of the light emit from a side of the second light guide portion (340) close to the center of the annular cover (100); And / or, a second light reflecting element (800) is provided on a side of the light guiding element (300) facing away from the center of the annular cover (100).

7. The lighting device according to claim 1, characterized in that: The lighting device further comprises: a second light-emitting component (400) and a first light diffusion element (900), wherein the first light diffusion element (900) is located on a side of the light-guiding element (300) close to the center of the annular cover (100), the second light-emitting component (400) faces the first light diffusion element (900) and is used to emit light to the first light diffusion element (900), and at least part of the light emitted by the second light-emitting component (400) is emitted from the first light diffusion element (900) toward a side of the bottom of the annular cover (100) to simulate sky light.

8. The lighting device according to claim 7, characterized in that: The first light-emitting component (200) and the second light-emitting component (400) both include at least three lamp beads with different spectra.

9. The lighting device according to claim 7, characterized in that: The lighting device further comprises a transparent element (500); The transparent element (500) is located inside the annular cover (100) and on a side of the light-guiding element (300) close to the center of the annular cover (100); one side of the transparent element (500) faces the first light diffusion element (900) and the other side faces the bottom of the annular cover (100).

10. The lighting device according to claim 9, characterized in that: The lighting device further comprises: a second light diffusion element (600); The second light diffusing element (600) is located inside the annular cover (100), and the second light diffusing element (600) is located on a side of the light guiding element (300) close to the center of the annular cover (100) so as to diffuse the light emitted from a side of the light guiding section (310) close to the center of the annular cover (100); the first light diffusing element (900) is located on a side of the second light diffusing element (600) close to the center of the annular cover (100); and the transparent element (500) is located on a side of the second light diffusing element (600) close to the center of the annular cover (100).

11. The lighting device according to claim 10, characterized in that: The lighting device also includes a top plate (710) and a support ring (720); The top plate (710) is connected to the annular cover (100) and is opposite to the first light diffuser (900), and each of the second light-emitting components (400) is arranged on a side of the top plate (710) facing the first light diffuser (900); The support ring (720) is arranged inside the annular cover body (100), one end of the support ring (720) is against the top plate (710), and the other end is against the first light diffuser element (900), the first light diffuser element (900) is fitted with the transparent element (500), the transparent element (500) and the second light diffuser element (600) are matched at an upper limit position in the axial direction of the annular cover body (100), a support portion (110) is provided at the bottom end of the annular cover body (100), and the second light diffuser element (600) and the support portion (110) are matched at an upper limit position in the axial direction of the annular cover body (100).

12. The lighting device according to claim 11, characterized in that: The outer wall of the support ring (720) is provided with a flange (721) extending in a radial direction of the support ring (720) away from the center of the support ring (720), and each of the first light-emitting components (200) is arranged on a side of the flange (721) facing away from the top plate (710), and each of the first light-emitting components (200) is opposite to the end surface of the corresponding light guide segment (310) facing the top plate (710).

Images