Lighting device and lighting system

Abstract

The invention provides a lighting device. The lighting device comprises a lamp body and a light source assembly fixedly connected to the lamp body. The lamp body is of an arc-shaped structure and comprises a base table, a first surrounding edge and a second surrounding edge. The second surrounding edge is arranged on the inner side of the first surrounding edge and provided with a heat dissipation groove. The light source assembly comprises a substrate and light-emitting units arranged on the substrate, the light-emitting units surround to form a light-emitting area capable of adjusting light and color, the substrate is of an arc-shaped structure, the side edge of the substrate is connected with an insulation pad in a buckled mode, and the substrate is fixedly connected to the second surrounding edge; heat generated by the light-emitting unit is dissipated to the outside through the substrate and the heat dissipation groove. The lamp body and the substrate of the lighting device are provided with the arc-shaped structures and can be spliced according to requirements; heat generated by the light-emitting unit is dissipated to the outside through the substrate and the heat dissipation grooves, conduction heat dissipation and convection heat dissipation are achieved, the pressure difference between the inside and the outside of the lamp body is effectively balanced, and the service life of the whole lamp is prolonged. The invention further provides a lighting system comprising the lighting device.

Description

Technical Field

[0001] The present invention belongs to the technical field of LED lamps, and in particular relates to a lighting device and a lighting system. Background Art

[0002] LED lamps are solid-state semiconductor devices that use light-emitting diodes as light sources to directly convert electrical energy into visible light. According to demand, LED lamps can stimulate light-emitting chips of different wavelengths to emit light of different colors. Due to the advantages of high brightness, low energy consumption, environmental protection, long life, impact resistance and stable performance, LED lamps have been widely used in indoor and outdoor lighting fields.

[0003] In existing LED lamps, the shape of the lamp body is determined at the factory, such as round, oval, rectangular and square, etc. Users cannot splice the shape according to their needs to achieve a specific lighting range. In addition, these LED lamps mostly use a single convection heat dissipation structure or conduction heat dissipation structure to dissipate the heat generated by the light source and power supply to the outside world. The heat dissipation function is relatively simple, which affects the performance and service life of the light source. In terms of light output performance, these LED lamps are affected by the installation structure, and the light is easily blocked by the installation column, causing a shadow in the emitted light spot, thereby affecting the uniformity of light output. Summary of the invention

[0004] In order to solve the deficiencies of the prior art, the present invention provides a lighting device, wherein both the lamp body and the substrate have an arc-shaped structure, and the two are adaptably installed and can be spliced ​​as required; the heat generated by the light-emitting unit is dissipated to the outside through the substrate and the heat dissipation groove, achieving conductive heat dissipation and convection heat dissipation, which can effectively balance the pressure difference between the inside and outside of the lamp body and increase the service life of the entire lamp. The present invention also provides a lighting system including the lighting device.

[0005] The technical effects to be achieved by the present invention are achieved through the following technical aspects:

[0006] In a first aspect, the present invention provides a lighting device, comprising a lamp body and a light source assembly fixedly connected to the lamp body;

[0007] The lamp body has an arc-shaped structure, and includes a base, and a first surrounding edge and a second surrounding edge arranged on the base, wherein the second surrounding edge is arranged inside the first surrounding edge, and the second surrounding edge is provided with a heat dissipation groove;

[0008] The light source assembly includes a substrate and a light-emitting unit arranged on the substrate, a plurality of the light-emitting units surround to form a light-emitting area capable of dimming and color adjustment, the substrate has an arc-shaped structure, and an insulating pad is arranged on the side of the substrate, and the substrate is fixedly connected to the second surrounding edge;

[0009] The heat generated by the light-emitting unit is dissipated to the outside through the substrate and the heat dissipation groove.

[0010] In some embodiments, the second surrounding edge and the base form a chamber with an opening, the substrate is disposed on the chamber, and the substrate covers the opening; a heat dissipation gap is provided between the second surrounding edge and the first surrounding edge, and the chamber, the heat dissipation groove and the heat dissipation gap constitute an airflow heat dissipation channel.

[0011] In some embodiments, the lamp body further includes a light emitting portion, the base is provided with a base surface, the light emitting portion extends from the base surface along the light emitting direction of the light emitting unit, the light emitting portion is provided with a light emitting cavity, and the light emitting cavity is communicated with the chamber;

[0012] The projection of the light emitting portion on the base surface covers the projection of the light emitting area on the base surface.

[0013] In some embodiments, the base is provided with a first support column and a second support column, the first support column and the second support column are provided on the inner side of the second surrounding edge, and the height of the first support column is less than the height of the second support column;

[0014] The substrate comprises a first mounting surface and a second mounting surface which are arranged opposite to each other, the light emitting unit is arranged on the first mounting surface, and the second supporting column and the second surrounding edge are respectively abutted against the first mounting surface.

[0015] In some embodiments, the first support column is provided with a first mounting hole, the substrate is provided with a mounting groove, and a first through hole and a second through hole passing through the first mounting surface and the second mounting surface, the mounting groove is opened on the side of the substrate, the insulating pad is provided with an insulating column, the insulating pad is fixedly connected to the mounting groove, and the insulating column is arranged on the inner side of the first through hole, the insulating column is provided with an insulating through hole, and the insulating through hole is connected to the first mounting hole.

[0016] In some embodiments, the lighting device further comprises a fastening assembly, wherein the fastening assembly comprises a first fastener and a second fastener;

[0017] Taking the direction from the first mounting surface toward the second mounting surface as a first direction, along the first direction, the first fastener passes through the first mounting hole and the insulating through hole and is fixed on the mounting base.

[0018] In some embodiments, the insulating pad is arranged on the heat dissipation groove, and the insulating pad includes a first gasket and a second gasket, and the first gasket and the second gasket are respectively bonded to the first mounting surface and the second mounting surface; the thickness of the first gasket is H1, the height of the first support column is L1, and the height of the second surrounding edge is H2, and the following relationship is satisfied: H1+L1=H2.

[0019] In some embodiments, the second support column is provided with a second mounting hole, and a reinforcing rib is provided on the outer side of the second support column;

[0020] The direction from the second mounting surface toward the first mounting surface is taken as the second direction. Along the second direction, the second fastener passes through the second through hole and is fixedly connected in the second mounting hole.

[0021] In some embodiments, the lighting device further comprises a power supply assembly, wherein the power supply assembly comprises a power supply body and a plastic shell encapsulating the power supply body;

[0022] The substrate is provided with a third through hole, and the fastening assembly further comprises a third fastener, and the third fastener passes through the third through hole to fix the plastic housing and the substrate together.

[0023] In a second aspect, the present invention provides a lighting system, comprising a mounting base, and the lighting device described above, wherein the light-emitting units are arranged in an array on the substrate, and the light-emitting units include first lamp beads and second lamp beads that respectively present a first color temperature and a second color temperature;

[0024] The lighting devices are spliced ​​together and fixed on the mounting base; the plurality of light-emitting areas are combined as required to adjust the light and color.

[0025] In summary, the present invention has at least the following benefits:

[0026] 1. In the lighting device provided by the present invention, the light source assembly is installed in a cavity formed by the second surrounding edge and the boss; the substrate with an arc structure covers the opening of the cavity and is fixedly connected to the shell with the same arc structure, so that the lighting device is arc-shaped as a whole and can be flexibly spliced ​​as required; the heat generated by the light-emitting unit of the light source assembly is dissipated to the outside through the substrate and the heat dissipation groove, realizing conductive heat dissipation and convective heat dissipation, which can effectively balance the pressure difference between the inside and outside of the lamp body and increase the service life of the entire lamp.

[0027] 2. In the lighting device provided by the present invention, the light generated by the light-emitting area located on the substrate is emitted to the outside through the light-emitting cavity provided in the lamp body, thereby accurately controlling the light and achieving uniform light output; this structure combined with the dimming and color adjustment function of the light-emitting unit can meet the lighting needs of multiple places.

[0028] 3. The lighting system provided by the present invention adopts a lighting device with an overall arc-shaped structure, which can be flexibly spliced ​​and assembled as needed to construct different lighting areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the structure of the lighting device according to Embodiment 1 of the present invention.

[0030] Figure 2 This is a partial exploded view of the lighting device of Example 1 of the present invention.

[0031] Figure 3 It is a top view of the lighting device according to embodiment 1 of the present invention.

[0032] Figure 4 This is a schematic structural diagram of a lamp body according to Embodiment 1 of the present invention.

[0033] Figure 5 It is a schematic structural diagram of a light source assembly according to Embodiment 1 of the present invention.

[0034] Figure 6 Schematic diagram of heat dissipation of the lighting device of embodiment 1 of the present invention

[0035] Figure 7 This is a partial exploded view of the lighting device according to embodiment 2 of the present invention.

[0036] Figure 8 It is a schematic structural diagram of a light source assembly equipped with an insulating pad according to Embodiment 2 of the present invention.

[0037] Fig. 9 This is an exploded view of the lighting system of Example 3 of the present invention.

[0038] Fig.10 This is one of the splicing schematic diagrams of the lighting system according to Embodiment 3 of the present invention.

[0039] Fig.11 This is the second splicing schematic diagram of the lighting system according to the third embodiment of the present invention.

[0040] Fig.12 This is the third splicing schematic diagram of the lighting system according to the third embodiment of the present invention.

[0041] Fig.13 This is the fourth splicing schematic diagram of the lighting system according to the third embodiment of the present invention.

[0042] Fig.14 This is the fifth splicing schematic diagram of the lighting system according to the third embodiment of the present invention.

[0043] Markings in the figure:

[0044] 100 - lighting device, mounting base - 200;

[0045] 1-lamp body, 10-base, 11-first surrounding edge, 12-second surrounding edge, 13-light output part, 14-first supporting column, 15-second supporting column;

[0046] 101-base surface, 111-first arcuate edge, 112-second arcuate edge, 113-side edge, 121-heat dissipation groove, 122-chamber, 123-opening, 124-heat dissipation gap, 130-light output cavity, 131-light output surface, 141-first mounting hole, 151-second mounting hole, 152-reinforcement rib;

[0047] 2-light source assembly, 21-substrate, 22-light emitting unit;

[0048] 201 - first mounting surface, 202 - second mounting surface, 210 - mounting groove, 211 - first through hole, 212 - second through hole, 213 - third through hole, 220 - light emitting area, 221 - first lamp bead, 222 - second lamp bead;

[0049] 3-insulating pad, 30-insulating column, 301-insulating through hole, 31-first gasket, 32-second gasket, 321-third mounting hole;

[0050] 4-fastening assembly, 41-first fastening member, 42-second fastening member, 43-third fastening member;

[0051] 5-power supply assembly, 51-power supply body, 52-plastic shell;

[0052] A1-first circle, A2-second circle, L1-first direction, L2-second direction; DETAILED DESCRIPTION

[0053] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively in conjunction with the accompanying drawings and specific embodiments. The preferred embodiments of the present invention are provided in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0054] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0055] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0057] Example 1

[0058] refer to Figure 2-Figure 6 This embodiment provides a lighting device 100, including a lamp body 1 and a light source assembly 2. The lamp body 1 serves as a main frame of the lighting device 100 and is used to install the light source assembly 2.

[0059] The lamp body 1 includes a base 10, a first surrounding edge 11 and a second surrounding edge 12, and the first surrounding edge 11 and the second surrounding edge 12 are arranged on the base 10. The lamp body 1 of the present embodiment is an injection-molded plastic part. Specifically, the base 10, the first surrounding edge 11 and the second surrounding edge 12 are integrally injection-molded. The first surrounding edge 11 is convexly arranged on the outer edge of the base 10, and the second surrounding edge 12 is located on the inner side of the first surrounding edge 11. The second surrounding edge 12 is provided with a heat dissipation groove 121. Specifically, the heat dissipation groove 121 is opened at the upper edge of the second surrounding edge 12.

[0060] The first surrounding edge 11 surrounds and forms the overall appearance of the lamp body 1 and the lighting device 100. Figure 3 As shown, the first surrounding edge 11 includes a first arcuate edge 111, a second arcuate edge 112, and a side edge 113 arranged on the first arcuate edge 111 and the second arcuate edge 112. The first arcuate edge 111 and the second arcuate edge 112 respectively belong to a section of the arc length of the first circular ring A1 and the second circular ring A2. The first circular ring A1 and the second circular ring A2 are concentric circles, and the first circular ring A1 is located at the outer circumference of the second circular ring A2. The length of the first arcuate edge 111 is greater than the length of the second arcuate edge 112. The length of the side edge 113 is the difference between the radius of the first circular ring A1 and the radius of the second circular ring A2. Along the radial direction of the first circular ring A1 or the second circular ring A2, the cross section of the lamp body 1 is roughly an "inverted convex" structure.

[0061] The light source assembly 2 includes a substrate 21 and a light-emitting unit 22. The substrate 21 may be an aluminum substrate or a ceramic substrate. The light-emitting unit 22 is fixedly connected to one side of the substrate 21, for example, by welding on the substrate 21 through an SMD patch or a COB package. The substrate 21 of this embodiment is an aluminum substrate, and the light-emitting unit 22 is an LED lamp bead using an SMD patch. A plurality of light-emitting units 22 surround and form a light-emitting area 220, which can perform stepless dimming and color adjustment of a variety of light colors and color temperatures.

[0062] The base plate 21 is also in an arc-shaped structure to match the first surrounding edge 11. In this way, the lamp body 1 and the lighting device 100 are in an arc-shaped structure as a whole. Based on the unique arc-shaped structure, the lighting device 100 can be spliced ​​as required.

[0063] An insulating pad 3 is provided on the side of the substrate 21 to enclose the through hole opened on the substrate 21, so as to separate it from other parts such as the metal base. Even if the mounting surface of the lamp board contacts the metal part, the lamp board will not be damaged; at the same time, it prevents abnormal substrates from being connected to the base through the through hole and damaging other electronic components. The substrate 21 is fixed on the second surrounding edge 12. The top surface of the second surrounding edge 12 forms a supporting surface, and the substrate 21 is laid flat on the supporting surface and locked by fasteners.

[0064] Furthermore, the second surrounding edge 12 and the base 10 surround to form a chamber 122, and the chamber 122 has an opening 123. The second surrounding edge 12 is located inside the first surrounding edge 11, and the height of the second surrounding edge 12 is less than the height of the first surrounding edge 11. When the substrate 21 is mounted on the supporting surface of the second surrounding edge 12, the substrate 21 is also located on the chamber 122, and the substrate 21 covers the opening 123. The lamp body 1 is provided with a heat dissipation gap 124 between the second surrounding edge 12 and the first surrounding edge 11. The chamber 122, the heat dissipation groove 121 and the heat dissipation gap 124 constitute an airflow heat dissipation channel, and part of the heat generated by the light-emitting unit 22 is dissipated to the outside through the airflow heat dissipation channel.

[0065] like Figure 6 As shown, during the operation of the lighting device 100, the light-emitting unit 22 is powered on to emit light, and the light is emitted to the outside through the light-emitting cavity 130. During the operation, the heat generated by the light-emitting unit 22 is dissipated to the outside through the substrate 21 and the heat dissipation groove 121. On the one hand, the heat is conducted from the first mounting surface 201 of the substrate 21 to the second mounting surface 202 and dissipated to the outside by means of heat transfer; on the other hand, by means of convection heat dissipation, the air flow rises from the light-emitting cavity 130 and the chamber 122, and is dissipated to the outside through the heat dissipation groove 121 and the heat dissipation gap 124. The lighting device 100 of this embodiment can balance the pressure difference inside the lamp body 1 by providing the heat dissipation groove 121 and the heat dissipation gap 124, thereby improving the service life of the light source assembly and the lighting device as a whole.

[0066] In the light emitting structure, the lamp body 1 is further provided with a light emitting portion 13, and the base 10 is provided with a base surface 101. The light emitting portion 13 extends from the base surface 101 along the light emitting direction of the light emitting unit 22, and the light emitting portion 13 is provided with a light emitting cavity 130, which is connected to the chamber 122.

[0067] The projection of the light emitting portion 13 on the base surface 101 covers the projection of the light emitting region 220 on the base surface. It can be understood that the projection of the light emitting region 220 on the base surface is covered by the projection of the light emitting portion 13 on the base surface 101, and the light generated by the light emitting region 220 enters the light emitting cavity 130 and is emitted to the outside from the light emitting surface 131. In some embodiments, all the light generated by the light emitting region 220 is emitted to the outside through the light emitting surface 131.

[0068] The base 10 is provided with a first support column 14 and a second support column 15 . The first support column 14 and the second support column 15 are both arranged on the inner side of the second surrounding edge 12 , and the height of the first support column 14 is smaller than that of the second support column 15 .

[0069] The substrate 21 includes a first mounting surface 201 and a second mounting surface 202 that are arranged opposite to each other. The light emitting unit 22 is arranged on the first mounting surface 201. The second support column 15 and the second surrounding edge 12 are respectively abutted against the first mounting surface 201. The second support column 15 is flush with the support surface of the second surrounding edge 12, that is, the height of the second support column 15 is equal to the height of the second surrounding edge 12. The substrate 21 is placed on the second surrounding edge 12 and the second support column 15, and covers the opening 123 of the chamber 122.

[0070] The first support column 14 cooperates with the insulating pad 3 to support the substrate 21. In some embodiments, the first support column 14 is adjacent to the heat dissipation slot 121. The first support column 14 is provided with a first mounting hole 141, and the substrate 21 is provided with a mounting slot 210, a first through hole 211, and a second through hole 212. The first through hole 211 and the second through hole 212 penetrate the first mounting surface 201 and the second mounting surface 202.

[0071] The mounting groove 210 is provided on the side of the substrate 21, and the insulating pad 3 is provided with an insulating column 30 protruding therefrom, and the insulating column 30 is provided with an insulating through hole 301. Further, the insulating pad 3 is fixedly connected to the mounting groove 210, and the insulating column 30 is passed through the inner side of the first through hole 211, and at this time, the insulating through hole 301 is connected to the first mounting hole 141.

[0072] Since the lighting device of this embodiment needs to be installed to an external installation base through a metal installation base. In order to ensure the insulation protection effect, the insulating pad 3 is installed in the installation groove 210 when the second installation surface of the substrate faces the installation base and contacts the connecting column of the installation base. At this time, the insulating column 30 of the insulating pad 3 passes through the first through hole 211 opened in the substrate 21, so that the insulating through hole 301 is located on the inner side of the first through hole 211. The first installation hole 141 opened in the first support column 14 is a reserved hole. When installing and fixing, the fastener passes through the first installation hole 141 and the insulating through hole 301 and is fixed on the installation base.

[0073] The fastening assembly 4 includes a first fastener 41 and a second fastener 42, and the first fastener 41 and the second fastener 42 are screws made of metal. The direction from the first mounting surface 201 to the second mounting surface 202 is the first direction L1. The first direction L1 is opposite to the light emitting direction of the light emitting unit 22. When the lamp body is mounted on the mounting base, the first fastener 41 passes through the first mounting hole 141 and the insulating through hole 301 along the first direction L1 and is fixed on the mounting base.

[0074] The insulating pad 3 installed in the mounting groove 210 includes a first gasket 31 and a second gasket 32, which are respectively attached to the first mounting surface 201 and the second mounting surface 202 of the substrate 21. The thickness of the first gasket 31 is H1, the height of the first support column 14 is L1, and the height of the second surrounding edge 12 is H2, which has the following relationship: H1+L1=H2. That is, the first support column 14 and the first gasket 31 also support the substrate 21.

[0075] The insulating pad 3 is detachably mounted in the mounting groove 210 on the side of the substrate 21. After the insulating column 30 of the first gasket 31 passes through the first through hole 211, it is partially or completely engaged in the third mounting hole 321 opened by the second gasket 32. That is, the top of the insulating column 30 is partially or completely located in the third mounting hole 321, but does not protrude from the third mounting hole 321.

[0076] Since the first through hole 211 is surrounded and separated by the insulating column 30 on the inside, the first through hole 211 is located at the edge of the first mounting surface 201 and the second mounting surface 202, and the side wall adjacent to the first through hole 211 will not damage the aluminum substrate (PCB board or circuit board) even if it contacts the metal component. In addition, in the case of abnormality in the aluminum substrate, it will not be conductive to damage other components.

[0077] Furthermore, the second support column 15 is provided with a second mounting hole 151, and a reinforcing rib 152 is provided on the outer side of the second support column 15. Figure 2 and Figure 4The direction from the second mounting surface 202 to the first mounting surface 201 is the second direction L2, which is the same as the light emitting direction of the light emitting unit 22. Along the second direction L2, the second fastener 42 passes through the second through hole 212 and is fixedly connected to the second mounting hole 151.

[0078] The lighting device provided in this embodiment has a substrate with an arc structure covering the opening of the chamber and is fixedly connected to a shell with the same arc structure, so that the lighting device is arc-shaped as a whole and can be flexibly spliced ​​as needed; the light source assembly is installed in the chamber formed by the second surrounding edge and the boss, and the heat generated by the light-emitting unit of the light source assembly is dissipated to the outside through the substrate and the heat dissipation groove, realizing conduction heat dissipation and convection heat dissipation, which can effectively balance the pressure difference between the inside and outside of the lamp body and increase the service life of the entire lamp. In addition, the light generated by the light-emitting area on the substrate is emitted to the outside through the light-emitting cavity set in the lamp body, so as to accurately control the light and achieve uniform light output. At the same time, combined with the dimming and color adjustment function of the light-emitting unit, it can meet the lighting needs of multiple places.

[0079] Example 2

[0080] exist Figure 1-Figure 6 Based on the reference Figure 7 and Figure 8 In the lighting device of this embodiment, a power supply assembly 5 is also included. The power supply assembly 5 includes a power supply body 51 and a plastic shell 52 . The plastic shell 52 wraps the power supply body 51 .

[0081] The power supply assembly 5 is mounted on the second mounting surface 202. Correspondingly, the substrate 21 is provided with a third through hole 213, and the fastening assembly 4 includes a third fastener 43, which passes through the third through hole 213 to fix the plastic housing 52 and the substrate 21 together. The third fastener 43 of this embodiment is a rivet, which is a rivet for single-sided riveting, and can stably mount the power supply assembly 5 on the second mounting surface 202 to avoid loosening during vibration.

[0082] Example 3

[0083] exist Figure 1-Figure 8 Based on reference Figure 9-14 This embodiment provides a lighting system, including a mounting base 200, and the lighting device 100 of embodiment 1 or embodiment 2. The mounting base 200 is a metal part, and the mounting base 200 is fixedly attached to the external mounting base, and the first fastener passes through the first mounting hole and the insulating through hole to fix the lamp body to the mounting base.

[0084] It should be noted that the light-emitting unit 22 is arranged in an array on the substrate 21, and the light-emitting unit 21 includes a first lamp bead 211 and a second lamp bead 212 that respectively present a first color temperature and a second color temperature. The first color temperature and the second color temperature are respectively a cold color temperature and a warm color temperature. The first lamp bead 211 and the second lamp bead 212 of the light-emitting unit 22 are controlled by a four-wire dual-circuit circuit to avoid a circuit breaker failure that causes the lighting device to fail to light up.

[0085] In some embodiments, the lighting devices are spliced ​​together and fixed on the mounting base 200. The light-emitting areas corresponding to the lighting devices 100 are dimmed and adjusted in combination according to the requirements.

[0086] The lighting system provided in this embodiment adopts a lighting device with an overall arc-shaped structure, which can be flexibly spliced ​​and assembled as needed to construct different lighting areas.

[0087] The above contents are merely examples and illustrations of the structure of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, and these obvious replacement forms all belong to the protection scope of the present invention.

Claims

1. A lighting device, characterized in that: It comprises a lamp body and a light source assembly fixedly connected to the lamp body; The lamp body has an arc-shaped structure, including a base, and a first surrounding edge and a second surrounding edge arranged on the base, wherein the second surrounding edge is arranged inside the first surrounding edge, and the second surrounding edge is provided with a heat dissipation groove; The light source assembly includes a substrate and a light-emitting unit arranged on the substrate, a plurality of the light-emitting units surround to form a light-emitting area capable of dimming and color adjustment, the substrate has an arc-shaped structure, and an insulating pad is arranged on the side of the substrate, and the substrate is fixedly connected to the second surrounding edge; The heat generated by the light-emitting unit is dissipated to the outside through the substrate and the heat dissipation groove.

2. The lighting device according to claim 1, characterized in that: The second surrounding edge and the base form a chamber with an opening, the substrate is arranged on the chamber, and the substrate covers the opening; a heat dissipation gap is provided between the second surrounding edge and the first surrounding edge, and the chamber, the heat dissipation groove and the heat dissipation gap constitute an airflow heat dissipation channel.

3. The lighting device according to claim 2, characterized in that: The lamp body further comprises a light emitting portion, the base is provided with a base surface, the light emitting portion extends from the base surface along the light emitting direction of the light emitting unit, the light emitting portion is provided with a light emitting cavity, and the light emitting cavity is communicated with the chamber; The projection of the light emitting portion on the base surface covers the projection of the light emitting area on the base surface.

4. The lighting device according to claim 1, characterized in that: The base is provided with a first support column and a second support column, the first support column and the second support column are arranged on the inner side of the second surrounding edge, and the height of the first support column is smaller than the height of the second support column; The substrate comprises a first mounting surface and a second mounting surface which are arranged opposite to each other, the light emitting unit is arranged on the first mounting surface, and the second supporting column and the second surrounding edge are respectively abutted against the first mounting surface.

5. The lighting device according to claim 4, characterized in that: The first support column is provided with a first mounting hole, the substrate is provided with a mounting groove, and a first through hole and a second through hole passing through the first mounting surface and the second mounting surface, the mounting groove is opened on the side of the substrate, the insulating pad is provided with an insulating column, the insulating pad is fixedly connected to the mounting groove, and the insulating column is arranged on the inner side of the first through hole, the insulating column is provided with an insulating through hole, and the insulating through hole is connected to the first mounting hole.

6. The lighting device according to claim 5, characterized in that: The lighting device further comprises a fastening assembly, wherein the fastening assembly comprises a first fastener and a second fastener; Taking the direction from the first mounting surface toward the second mounting surface as a first direction, along the first direction, the first fastener passes through the first mounting hole and the insulating through hole and is fixed on the mounting base.

7. The lighting device according to claim 6, characterized in that: The insulating pad is arranged on the heat dissipation groove, and the insulating pad includes a first gasket and a second gasket, and the first gasket and the second gasket are respectively bonded and connected to the first mounting surface and the second mounting surface; the thickness of the first gasket is H1, the height of the first support column is L1, and the height of the second surrounding edge is H2, and the following relationship is met: H1+L1=H2.

8. The lighting device according to claim 7, characterized in that: The second support column is provided with a second mounting hole, and a reinforcing rib is provided on the outer side of the second support column; The direction from the second mounting surface toward the first mounting surface is taken as the second direction. Along the second direction, the second fastener passes through the second through hole and is fixedly connected in the second mounting hole.

9. The lighting device according to claim 6, characterized in that: The lighting device further comprises a power supply assembly, wherein the power supply assembly comprises a power supply body and a plastic shell encapsulating the power supply body; The substrate is provided with a third through hole, and the fastening assembly further comprises a third fastener, and the third fastener passes through the third through hole to fix the plastic housing and the substrate together.

10. A lighting system, characterized in that It comprises a mounting base, and the lighting device according to any one of claims 1 to 9, wherein the light-emitting units are arranged in an array on the substrate, and the light-emitting units comprise first lamp beads and second lamp beads which respectively present a first color temperature and a second color temperature; The lighting devices are spliced ​​together and fixed on the mounting base; the plurality of light-emitting areas are combined as required to adjust the light and color.

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