Light emitting device and optical machine

Abstract

The utility model provides a light-emitting device which comprises a light-emitting panel, a conical rod fixing piece and a plurality of conical rods. The conical rod fixing piece is arranged to be of a structure comprising a plurality of installation parts, each installation part is provided with an installation hole, the conical rod can be embedded into the installation hole, the coupling-in end of the conical rod abuts against the lamp bead to transmit the light emitted by the lamp bead, due to the fact that part of the light does not enter the conical rod, the lamp bead is arranged in the installation parts in a covering mode, and therefore the light emitted by the lamp bead can be transmitted. According to the light-emitting device provided by the embodiment of the invention, the light rays which do not enter the conical rod can be repeatedly refracted in the mounting part to be converted into heat, so that the light rays which do not enter the conical rod cannot be leaked, are converted into heat to be transmitted to the mounting part, and are finally dissipated through heat dissipation of the mounting part, so that the light rays which do not enter the conical rod are eliminated. The light-emitting device can be independently cooled, so that the overall heat dissipation efficiency of the optical machine is improved, and the overall temperature of the optical machine is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of light sources, and more particularly, to a light-emitting device and an optical engine. Background Art

[0002] An optical engine is a projection display component that combines a light-emitting device, a display panel, an optical projection lens, etc. in a cavity. Currently, optical engines typically use light-emitting diodes (LEDs) and cone rods as light-emitting devices. The LEDs can emit light, and the cone rods can transmit the light to the display panel. A liquid crystal display (LCD) screen is used as the display panel.

[0003] Since Fresnel loss occurs when light passes through the interface composed of different refractive materials, during the process of coupling the light emitted by the LED into the cone rod, more than 20% of the light will be lost. This part of the loss will be continuously refracted by the medium and finally converted into heat.

[0004] In the prior art, the light-emitting device, the display panel, the optical projection lens, etc. are usually arranged in the optical engine cavity to prevent the light of the light-emitting device from leaking out. Generally, an internal circulation method is used to conduct the heat in the cavity where the LCD screen is located out of the optical engine cavity. Internal circulation means using the air in the optical engine cavity as the heat transfer medium. Since the specific heat of air is low, the temperature in the cavity is likely to rise rapidly. If heat dissipation is required for the light-emitting device, the optical engine cavity needs to be cooled first. The efficiency of this heat dissipation method is very low, and it is easy to cause the temperature in the optical engine cavity to accumulate, resulting in too high a temperature in the optical engine cavity. The too high temperature will cause the LCD screen in the optical engine cavity to be more easily damaged. Summary of the Utility Model

[0005] Embodiments of the present application provide a light-emitting device and an optical engine to at least partially improve the above problems.

[0006] Embodiments of the present application are implemented through the following technical solutions.

[0007] On the one hand, an embodiment of the present application provides a light-emitting device, including: a light-emitting panel, a cone rod fixing member, and a plurality of cone rods. A plurality of lamp beads are arranged on the surface of the light-emitting panel. The cone rod fixing member includes a plurality of mounting portions, and each mounting portion forms a mounting hole. The end face of each mounting portion abuts against the light-emitting panel. The plurality of lamp beads correspond to the plurality of mounting portions one by one and are located in the corresponding mounting holes. Each cone rod includes an incident end and an exit end that are opposite to each other. The cross-sectional area of the incident end is smaller than the cross-sectional area of the exit end. The incident end of each cone rod is embedded in one of the mounting holes and abuts against the lamp bead.

[0008] In some embodiments, the light-emitting device further includes: a dust-proof seal, which is disposed on the surface of the light-emitting panel. The dust-proof seal is provided with a plurality of light-transmitting holes, and the plurality of lamp beads are respectively located in the plurality of light-transmitting holes. The end face of the mounting portion abuts against the dust-proof seal.

[0009] In some embodiments, the mounting hole includes a first mounting hole and a second mounting hole that are communicated. The first mounting hole is adjacent to the light-emitting panel, and the lamp bead is located in the first mounting hole. The inner diameter of one end of the second mounting hole close to the first mounting hole is smaller than the inner diameter of the first mounting hole.

[0010] In some embodiments, the inner diameter of the second mounting hole gradually increases from one end close to the first mounting hole to the end away from the first mounting hole.

[0011] In some embodiments, each mounting portion includes a first end portion and a second end portion. The first end portions of adjacent mounting portions are connected, and the second end portions abut against the light-emitting panel. The cross-sectional area of the first end portion is larger than the cross-sectional area of the second end portion, and there is a gap between the second end portions of adjacent mounting portions.

[0012] In some embodiments, the taper rod fixing member has a convex column, and the light-emitting panel has a concave hole matching the convex column. The convex column is embedded in the concave hole to connect the taper rod fixing member to the light-emitting panel.

[0013] In some embodiments, the light-emitting device further includes a spring piece, which is disposed on the taper rod fixing member and presses against the taper rod so that the coupling end of the taper rod abuts against the lamp bead.

[0014] In some embodiments, the light-emitting device further includes: a heat dissipation member, which is connected to the surface of the light-emitting panel away from the lamp beads.

[0015] On the other hand, the present embodiment further provides an optical engine, including: a main body and at least one light-emitting device as described above. The main body includes a housing and a lens. The lens is disposed in the housing, and the light-emitting device is disposed outside the housing.

[0016] In some embodiments, the light-emitting device is detachably connected to the housing.

[0017] The light-emitting device provided by the embodiment of the present application has a cone rod fixing member configured to include a plurality of mounting portions, and each mounting portion has a mounting hole. The mounting hole can be arranged corresponding to the lamp beads on the light-emitting panel. The cone rod can be embedded into the mounting hole, and the coupling end of the cone rod abuts against the lamp beads to transmit the light emitted by the lamp beads. Since some light does not enter the cone rod, in this embodiment, the lamp beads are covered within the mounting portion, and the light that does not enter the cone rod will be repeatedly refracted within the mounting portion and converted into heat. Therefore, the light that does not enter the cone rod will not leak out, but is converted into heat and transferred to the mounting portion, and finally dissipated by dissipating heat from the mounting portion, so as to eliminate the light that does not enter the cone rod. The light-emitting device provided by the embodiment of the present application is applied to an optical engine, and can dissipate heat from the light-emitting device alone to improve the overall heat dissipation efficiency of the optical engine and reduce the overall temperature of the optical engine. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without creative efforts.

[0019] Figure 1 Shows a schematic structural diagram of an optical engine provided by an embodiment of the present application.

[0020] Figure 2 Shows an exploded view of an optical engine provided by an embodiment of the present application.

[0021] Figure 3 Shows a schematic structural diagram of a light-emitting device provided by an embodiment of the present application.

[0022] Figure 4 Shows an exploded view of a light-emitting device provided by an embodiment of the present application.

[0023] Figure 5 Shows a cross-sectional view of a light-emitting device provided by an embodiment of the present application.

[0024] Figure 6 Shows a partially enlarged view of a light-emitting device provided by an embodiment of the present application in a cross-sectional state.

[0025] Figure 7 Shows a schematic diagram of the assembled cone rod fixing member and cone rod in a light-emitting device provided by an embodiment of the present application.

[0026] Figure 8 Shows a partially enlarged view of the assembled cone rod fixing member and cone rod in a light-emitting device provided by an embodiment of the present application. Detailed Embodiments

[0027] In order to enable those skilled in the art of this technology to better understand the solution of this utility model, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this utility model, rather than all of the embodiments. Based on the embodiments in this utility model, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of this utility model.

[0028] The technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application.

[0029] An optical engine is a projection display component formed by combining a light-emitting device, a display panel, an optical projection lens, etc. in a cavity. Currently, the optical engine usually uses a light-emitting diode LED and a cone rod as the light-emitting device. The LED can emit light, and the cone rod can transmit the light to the display panel, and a liquid crystal display LCD screen is used as the display panel.

[0030] Since Fresnel loss will occur when light passes through the interface composed of different refractive materials, during the process of coupling the light emitted by the LED to the cone rod, more than 20% of the light will be lost. This part of the loss will be continuously refracted by the medium and finally converted into heat.

[0031] In the prior art, a light-emitting device, a display panel, an optical projection lens, etc. are usually arranged in the optical engine cavity to prevent the light of the light-emitting device from leaking out. Due to such a structural arrangement, the heat in the cavity where the LCD screen is located is generally conducted out by an internal circulation method. The internal circulation means using the air in the optical engine cavity as the heat transfer medium. Although a fan for promoting the air flow circulation in the optical engine cavity can be arranged in the optical engine cavity, due to the low specific heat of air, the temperature in the cavity is likely to rise rapidly. If heat dissipation is required for the light-emitting device, it is necessary to first dissipate the heat of the optical engine cavity, that is, it is necessary to discharge the hot air in the optical engine cavity out of the optical engine cavity and introduce cold air into the optical engine cavity. The heat on the LCD screen is then transferred to the cold air to play a role in dissipating the heat of the LCD screen. However, the efficiency of this heat dissipation method is very low. Specifically, it can be reflected that the heat generated by the LCD screen and the light-emitting device will be transferred to the air in the optical engine cavity, which is likely to cause the temperature in the optical engine cavity to accumulate, resulting in too high a temperature in the optical engine cavity, and it is possible that the heat dissipation efficiency in the optical engine cavity is difficult to keep up with the heat generation efficiency of the LCD screen and the light-emitting device. The too high temperature will cause the LCD screen in the optical engine cavity to be more easily damaged.

[0032] Based on the above problems, please refer to Figure 1, an embodiment of the present application provides an optical engine 1, which may include a main body 20 and a light-emitting device 10. The main body 20 may include a housing 210 and a lens 220. The lens 220 may be disposed inside the housing 210, and the light-emitting device 10 may be disposed outside the housing 210 and detachably connected to the housing 210. This can reduce the set length of the housing 210, and thus reduce the volume of the main body 20, making the optical engine 1 more portable.

[0033] Please refer to Figure 1 and Figure 2 simultaneously. During the operation of the optical engine 1, the heat generated by the lens 220 can be dissipated through an internal circulation method inside the housing 210. Since the light-emitting device 10 is disposed outside the housing 210, the light-emitting device 10 can directly dissipate the heat outside the housing, thus avoiding heat accumulation inside the housing 210 and improving the heat dissipation efficiency of the entire optical engine 1.

[0034] Specifically, please refer to Figure 3 and Figure 4 simultaneously. In this embodiment, the light-emitting device 10 may include: a light-emitting panel 110, a taper rod fixing member 120, and a plurality of taper rods 130. The taper rods 130 may be disposed inside the taper rod fixing member 120, and the taper rod fixing member 120 may be used to fix the taper rods 130 to the light-emitting panel 110.

[0035] A plurality of lamp beads 111 may be disposed on the surface of the light-emitting panel 110, and the lamp beads 111 may be used to emit light. The specific arrangement of the lamp beads 111 is not limited in the embodiments of the present application. For example, in one embodiment, a plurality of lamp beads 111 may be arranged in an array on the surface of the light-emitting panel 110, so that the light emitted by the light-emitting panel 110 is more uniform. It can be understood that in some other embodiments, the arrangement of the lamp beads 111 may also be set according to actual situations and is not limited herein. For the convenience of description, hereinafter, the case where the lamp beads 111 are arranged in an array on the surface of the light-emitting panel 110 is taken as an example for illustration. In addition, the color of the light emitted by the lamp beads 111 is not limited in the embodiments of the present application. For example, it may emit red light, or blue light or green light, etc. Of course, it may also be any combination of the above color lights, which can be specifically set according to actual situations and is not limited herein.

[0036] The cone rod fixing member 120 can be connected to the light-emitting panel 110. In the embodiments of the present application, the connection manner between the cone rod fixing member 120 and the light-emitting panel 110 is not limited either. For example, in one embodiment, the cone rod fixing member 120 can be detachably connected to the light-emitting panel 110, which facilitates the disassembly and installation of the cone rod fixing member 120 and the light-emitting panel 110. At the same time, when the light-emitting panel 110 is damaged or the lamp beads 111 on the light-emitting panel 110 are damaged, it is convenient for maintenance personnel to perform inspections and replacements.

[0037] In addition, please refer to again Figure 2 , in this embodiment, the cone rod fixing member 120 can also be connected to the housing 210 to connect the light-emitting device 10 to the main body 20. Similarly, a detachable connection manner can also be adopted between the cone rod fixing member 120 and the housing 210, such as snap connection, hinge connection, etc., which can be specifically set according to the actual situation and is not limited here.

[0038] Specifically, please refer to simultaneously Figure 4 and Figure 5 , the cone rod fixing member 120 can have a convex post 122, and the light-emitting panel 110 can have a concave hole 112 matching the convex post 122. The convex post 122 is detachably embedded in the concave hole 112. To further facilitate the disassembly and installation of the cone rod fixing member 120 and the light-emitting panel 110, the convex post 122 can be disposed at the edge position of the cone rod fixing member 120, and the concave hole 112 can be disposed at the edge of the light-emitting panel 110, which can reduce the possibility of damaging the lamp beads 111 on the light-emitting panel 110 during the installation process of the cone rod fixing member 120 and the light-emitting panel 110. It can be understood that in some other embodiments, the convex post 122 can also be disposed on the light-emitting panel 110, and the concave hole 112 can also be disposed on the cone rod fixing member 120, which can be specifically set according to the actual situation.

[0039] In this embodiment, the cone rod fixing member 120 can include a plurality of mounting portions 121. The mounting portions 121 can be used to mount the cone rod 130. An installation hole 1211 can be formed inside each mounting portion 121. The cone rod 130 can be embedded in the installation hole 1211. The structure of the installation hole 1211 can match the structure of the cone rod 130, which can make the cone rod 130 more stable when embedded in the installation hole 1211.

[0040] Please refer to simultaneously Figure 7 and Figure 8, the embodiments of the present application do not limit the formation manner of the mounting portion 121. For example, in this embodiment, the mounting portion 121 may be a convex structure. Specifically, the cone rod fixing member 120 may include a body 123, and the body 123 may be a plate-like structure. The mounting portion 121 may protrude from the body 123 and extend toward the light-emitting panel 110. The mounting portion 121 may include a first end 1212 and a second end 1213. The first end 1212 is connected to the body 123, and the second end 1213 is the end pointing to the light-emitting panel 110. The end face of the second end 1213 may abut against the light-emitting panel 110 so that a closed structure is formed between the mounting portion 121 and the light-emitting panel 110. A plurality of lamp beads 111 on the light-emitting panel 110 may correspond to a plurality of mounting portions 121 on the cone rod fixing member 120 one by one. When the end face of the mounting portion 121 abuts against the light-emitting panel 110, the lamp beads 111 may be located in the corresponding mounting holes 1211, so as to avoid the leakage of the light emitted by the lamp beads 111. At the same time, when each lamp bead 111 emits light, part of the light does not enter the cone rod 130. This part of the light will be refracted repeatedly in the mounting portion 121 and thus converted into heat. Therefore, the light that does not enter the cone rod 130 will not leak out, but is converted into heat and transferred to the mounting portion 121. Specifically, this heat may be accumulated in each mounting portion 121 respectively and finally dissipated by dissipating heat from the mounting portion 121. In the embodiments of the present application, heat may be directly dissipated from the mounting portion 121 to eliminate this part of the heat. For example, the air flow outside the mounting portion 121 may be used to take away this part of the heat.

[0041] Furthermore, in one implementation, the first ends 1212 of adjacent mounting portions 121 may be connected to each other, so that there is a connection relationship between adjacent mounting portions 121, which is beneficial to improving the structural stability of the entire cone rod fixing member 120. The cross-sectional area of the first end 1212 is larger than the cross-sectional area of the second end 1213, so as to ensure that the mounting portion 121 can completely cover the lamp beads 111.

[0042] In addition, since the cross-sectional area of the first end 1212 is larger than the cross-sectional area of the second end 1213, there may be a gap 1214 between the second ends 1213 of adjacent mounting portions 121. This gap 1214 may be used for dissipating heat from the mounting portion 121. Specifically, since there is a gap 1214 between adjacent mounting portions 121, the air flow may flow through the gap 1214. The flowing air flow can take away the heat of the mounting portion 121 and has a heat dissipation effect on the mounting portion 121.

[0043] It should be noted that in some other implementations, there may also be a gap 1214 between the first ends 1212 of adjacent mounting portions 121, which can improve the heat dissipation effect of the mounting portion 121.

[0044] As described above, in this embodiment, the lamp bead 111 array is arranged on the light-emitting panel 110. Since the mounting portions 121 correspond to the lamp beads 111 one by one, the mounting portions 121 can also be arranged in an array on the body 123 of the cone rod fixing member 120 in this embodiment, which can further improve the heat dissipation effect of the mounting portions 121.

[0045] The specific structure of the mounting hole 1211 is not limited in the embodiment of the present application. For example, in one embodiment, please refer to Figure 5 and Figure 6 . The mounting hole 1211 may include a first mounting hole 1211a and a second mounting hole 1211b that are communicated. The first mounting hole 1211a is arranged adjacent to the light-emitting panel 110, and the second mounting hole 1211b is arranged away from the light-emitting panel 110. When the second end surface of the mounting portion 121 abuts against the light-emitting panel 110, the lamp bead 111 can be located in the first mounting hole 1211a. The inner diameter of the second mounting hole 1211b near the first mounting hole 1211a is smaller than the inner diameter of the first mounting hole 1211a. That is to say, in this embodiment, the mounting hole 1211 can be set as a combined structure of a cone and a cylinder, where the second mounting hole 1211b is a conical hole and the first mounting hole 1211a is a cylindrical hole. This can make the structure of the mounting hole 1211 more adaptable to the cone rod 130 and also more adaptable to the lamp bead 111.

[0046] Please continue to refer to Figure 4 and Figure 5 . It can be understood that in this embodiment, the cone rod 130 may include an input end 131 and an output end 132 that are opposite to each other. The cross-sectional area of the input end 131 is smaller than the cross-sectional area of the output end 132. The input end 131 of each cone rod 130 can be embedded in a mounting hole 1211, specifically in the first mounting hole 1211a, and abuts against the lamp bead 111. When the cone rod 130 is embedded in the mounting hole 1211, the position of the input end 131 of the cone rod 130 corresponds to the first mounting hole 1211a.

[0047] It should be noted that since the taper rod 130 itself has a generally conical structure, the structure of the above-mentioned taper rod fixing member 120 is conducive to making the taper rod 130 fit more closely with the inner wall of the taper rod fixing member 120, so as to improve the light utilization rate of the light-emitting device 10. Specifically, when the taper rod 130 is installed in the installation part 121 of the taper rod fixing member 120, since the second installation hole 1211b is a tapered hole, the inner wall of the taper rod fixing member 120 can be in contact with the outer surface of the taper rod 130, so as to avoid generating an interval space between the taper rod 130 and the second installation hole 1211b, resulting in the waste of light when the light of the light cone rod 130 is transmitted in the above interval space. Therefore, the structures of the above-mentioned taper rod 130 and the installation hole 1211 can improve the light utilization rate of the light-emitting device 10.

[0048] In summary, since the outer surface of the taper rod 130 is in contact with the inner wall of the second installation hole 1211b, and there is an interval space between the first installation hole 1211a and the taper rod 130 for facilitating the docking of the lamp bead 111, part of the light emitted by the lamp bead 111 will not enter the taper rod 130. This part of the light will be refracted repeatedly in the first installation hole 1211a and converted into heat and accumulated in the first installation hole 1211a. The heat converted from light can be directly dissipated by means of contact heat transfer to the installation part 121. The light-emitting device 10 provided by the embodiment of the present application can directly dissipate heat from the installation part 111 to promote the dissipation of the heat generated by the light that does not enter the taper rod 130.

[0049] Furthermore, in an implementation manner, the inner diameter of the second installation hole 1211b gradually increases from the end close to the first installation hole 1211a to the end far from the first installation hole 1211a. The purpose of this setting is also to make the installation part 121 more adaptable to the structure of the taper rod 130, which is conducive to improving the light utilization rate of the light-emitting device 10 and at the same time improving the heat transfer efficiency between the taper rod 130 and the taper rod fixing member 120.

[0050] In this embodiment, the light-emitting device 10 may further include a dust-proof seal 140. The dust-proof seal 140 may be disposed on the surface of the light-emitting panel 110. The dust-proof seal 140 may be provided with a plurality of light-transmitting holes 141. A plurality of lamp beads 111 may be respectively located in the plurality of light-transmitting holes 141. When the taper rod fixing member 120 is connected to the light-emitting panel 110, the end surface of the first end portion 1212 of the mounting portion 121 may abut against the dust-proof seal 140. That is to say, the dust-proof seal 140 may be located between the taper rod fixing member 120 and the light-emitting panel 110 to further seal the connection between the taper rod fixing member 120 and the light-emitting panel 110, thereby reducing the probability of light leakage. At the same time, using the dust-proof seal 140 to seal between the taper rod fixing member 120 and the light-emitting panel 110 can also prevent dust from entering the inside of the first mounting hole 1211a, ensuring that the space inside the first mounting hole 1211a remains clean and avoiding problems such as a decrease in light brightness caused by the influence of the external environment.

[0051] The embodiments of the present application do not limit the specific material of the dust-proof seal 140. For example, it may be made of an elastic material such as silica gel or sponge. When the taper rod fixing member 120 abuts against the light-emitting panel 110, the dust-proof seal 140 is located between the taper rod fixing member 120 and the light-emitting panel 110 and is squeezed to play a role in dust-proof sealing. When the taper rod fixing member 120 is removed from the light-emitting panel 110, the dust-proof seal 140 can recover its deformation, so as to be reused later and reduce costs.

[0052] In addition, the light-emitting device 10 provided by the embodiments of the present application may further include a spring piece 150. The spring piece 150 may be disposed on the taper rod fixing member 120, specifically on the side of the taper rod fixing member 120 away from the light-emitting panel 110. The spring piece 150 may press against the output end of the taper rod 130, so that the input end 131 of the taper rod 130 abuts against the lamp bead 111. That is to say, the setting of the spring piece 150 can make the connection between the taper rod 130 and the lamp bead 111 tighter, avoiding the separation of the lamp bead 111 from the taper rod 130. The direct contact between the lamp bead 111 and the taper rod 130 can enable the light emitted by the lamp bead 111 to be better coupled into the taper rod 130, reducing the light that is not coupled into the taper rod 130, and thus being beneficial to improving the utilization rate of the light emitted by the lamp bead 111.

[0053] Further, please refer to again Figure 5, in this embodiment, the light-emitting device 10 may further include a heat sink 160. The heat sink 160 may be connected to the surface of the light-emitting panel 110 away from the lamp beads 111. It can be understood that during the operation of the optical engine 1, the lamp beads 111 emit light, and during this process, the lamp beads 111 also generate heat. Part of the heat is transferred to the cone rod 130, and the other part of the heat is transferred to the light-emitting panel 110. The heat sink 160 can be used to dissipate heat from the light-emitting panel 110. Specifically, the heat sink 160 can be in direct contact with the light-emitting panel 110, and the light-emitting panel 110 can transfer heat to the heat sink 160 to achieve the effect of the heat sink 160 dissipating heat from the light-emitting panel 110.

[0054] The embodiments of the present application do not limit the specific structure of the heat sink 160. For example, the heat sink 160 may have a plurality of heat dissipation fins 161. The heat sink 160 can transfer heat to the heat dissipation fins 161, and the external air flow can pass through the heat dissipation fins 161 and take away the heat of the heat dissipation fins 161.

[0055] Further, in this embodiment, the heat sink 160 can be arranged away from the housing 210, so as to avoid heat exchange between the heat sink 160 and the housing 210, thereby affecting the heat dissipation efficiency of the heat sink 160 and the heat dissipation efficiency of the components inside the housing 210.

[0056] The light-emitting device 10 provided by the embodiments of the present application has the structure that the cone rod fixing member 120 is set to include a plurality of mounting portions 121, and each mounting portion 121 has a mounting hole 1211. The mounting hole 1211 can be correspondingly arranged with the lamp beads 111 on the light-emitting panel 110. The cone rod 130 can be embedded in the mounting hole 1211, and the coupling end 131 of the cone rod 130 abuts against the lamp beads 111 to transmit the light emitted by the lamp beads 111. Since part of the light does not enter the cone rod 130, in the embodiments of the present application, the lamp beads 111 are covered in the mounting portion 121, and the light that does not enter the cone rod 130 will be refracted repeatedly in the mounting portion 121 and converted into heat. Therefore, the light that does not enter the cone rod 130 will not leak out, but is converted into heat and transferred to the mounting portion 121, and finally dissipated by dissipating heat from the mounting portion 121, so as to eliminate the light that does not enter the cone rod 130. The light-emitting device 10 provided by the embodiments of the present application is applied to the optical engine 1, and the overall heat dissipation efficiency of the optical engine 1 can be improved and the overall temperature of the optical engine 1 can be reduced by separately dissipating heat from the light-emitting device 10.

[0057] In the present utility model, unless otherwise clearly specified or defined, terms such as "installation" and "connection" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, an integral connection, or a transmission connection; it may be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0058] In addition, terms such as "first" and "second" are only used for distinguishing descriptions and cannot be understood as specific references or special structures. The description of "some embodiments" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In the present utility model, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any at least one embodiment or example. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in the present utility model and the features of different embodiments or examples.

[0059] The above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present utility model and should all be included in the protection scope of the present utility model.

Claims

1. A light emitting device, characterized in that: include: A light-emitting panel, a surface of which is provided with a plurality of lamp beads; A cone rod fixing member, the cone rod fixing member comprises a plurality of mounting parts, each of the mounting parts has a mounting hole formed therein, an end surface of each of the mounting parts abuts against the light-emitting panel, the plurality of lamp beads correspond to the plurality of mounting parts one by one, and are located in the corresponding mounting holes; as well as A plurality of tapered rods, each of which comprises a coupling-in end and a coupling-out end opposite to each other, the cross-sectional area of ​​the coupling-in end is smaller than the cross-sectional area of ​​the coupling-out end, the coupling-in end of each tapered rod is embedded in one of the mounting holes and abuts against the lamp bead.

2. The light emitting device according to claim 1, characterized in that: The light-emitting device also includes: a dustproof seal, which is arranged on the surface of the light-emitting panel, and the dustproof seal is provided with a plurality of light-through holes, the plurality of lamp beads are located in the plurality of light-through holes in a one-to-one correspondence, and the end face of the mounting portion abuts against the dustproof seal.

3. The light emitting device according to claim 1, characterized in that: The mounting hole comprises a first mounting hole and a second mounting hole which are connected, wherein the first mounting hole is adjacent to the light-emitting panel, the lamp bead is located in the first mounting hole, and the inner diameter of the second mounting hole at one end close to the first mounting hole is smaller than the inner diameter of the first mounting hole.

4. The light emitting device according to claim 3, characterized in that: The inner diameter of the second mounting hole gradually increases from an end close to the first mounting hole to an end far away from the first mounting hole.

5. The light emitting device according to claim 1, characterized in that: Each of the mounting portions includes a first end and a second end, the first ends of adjacent mounting portions are connected, the second ends abut against the light-emitting panel, the cross-sectional area of ​​the first end is larger than the cross-sectional area of ​​the second end, and there is a gap between the second ends of adjacent mounting portions.

6. The light emitting device according to claim 1, characterized in that: The cone rod fixing piece has a convex column, the light emitting panel has a concave hole matching the convex column, and the convex column is embedded in the concave hole to connect the cone rod fixing piece to the light emitting panel.

7. The light emitting device according to any one of claims 1 to 6, characterized in that: The light emitting device further comprises an elastic sheet, which is arranged on the cone rod fixing member and presses against the cone rod so that the coupling end of the cone rod abuts against the lamp bead.

8. The light emitting device according to any one of claims 1 to 6, characterized in that: The light emitting device further comprises: a heat sink connected to a surface of the light emitting panel away from the lamp beads.

9. An optical machine, characterized in that: The invention comprises a main body and at least one light emitting device according to any one of claims 1 to 8, wherein the main body comprises a housing and a lens, the lens is arranged in the housing, and the light emitting device is arranged outside the housing.

10. The optical machine according to claim 9, characterized in that: The light emitting device is detachably connected to the housing.

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