Environment-friendly low-electromagnetic-radiation electronic ballast

Abstract

The utility model relates to the technical field of electronic ballast application, and discloses an environment-friendly low electromagnetic radiation electronic ballast, which comprises a shielding case and an electronic ballast body, the inner wall of the shielding case is fixedly connected with a filling layer, the inner wall of the filling layer is fixedly connected with a shielding layer, one side of the outer wall of the shielding case is provided with a connecting seat, and the connecting seat is fixedly connected with the electronic ballast body. One side of the outer wall of the connecting seat is fixedly connected with a connector, one side of the outer wall of the connecting seat is provided with a connecting assembly, and the connecting assembly is used for ensuring the sealing performance of the joint of the shielding case; the connecting assembly comprises a rubber sealing frame, one side of the outer wall of the rubber sealing frame is fixedly connected to one side of the outer wall of the connecting base, and the inner wall of the shielding cover is fixedly connected with a connecting plate. According to the utility model, through the composite arrangement of the three layers of shielding structures, electromagnetic radiation can be limited in the ballast, the overall shielding effectiveness is effectively improved, electromagnetic interference to the external environment is reduced, and the heat dissipation performance of the electronic ballast is effectively improved at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic ballast application technical field especially relates to a kind of environmental protection type low electromagnetic radiation electronic ballast. BACKGROUND

[0002] Electronic ballast has a wide range of applications in the field of lighting, its main function is to convert the low-frequency ac power into high-frequency ac power, to provide stable and suitable operating voltage and current for gas discharge lamp, so that the lamp can be normally lit and work stably, compared with traditional inductive ballast, electronic ballast has many advantages, such as smaller size, lighter weight, higher luminous efficiency and can realize fast start, etc., these advantages make electronic ballast gradually occupy a dominant position in modern lighting system, whether in home lighting, commercial lighting or industrial lighting, etc.

[0003] In the working process of electronic ballast, due to the existence of complex electronic circuit inside, such as inverter circuit, resonance circuit, etc., these circuits will inevitably produce electromagnetic radiation when high-frequency switching action, if electromagnetic radiation is not controlled to spread outward, not only will cause interference to the surrounding other electronic equipment, affect its normal operation, long-term exposure in high-intensity electromagnetic radiation environment may also cause adverse symptoms of human nervous system, immune system, etc., therefore, shielding cover is introduced into the design of electronic ballast, its main role is to limit the electromagnetic radiation generated inside electronic ballast as much as possible in shielding cover, prevent it from leaking outward, so as to reduce the electromagnetic interference to external environment and equipment, protect electromagnetic compatibility and human health safety.

[0004] However, the shielding cover outside traditional environmental protection type low electromagnetic radiation electronic ballast has obvious shortcomings in practical application, traditional shielding cover is mostly made of simple metal material, so it also leads to poor shielding effect, on the one hand, when facing the electromagnetic radiation generated by complex high-frequency circuit inside electronic ballast, it cannot effectively block the leakage of electromagnetic wave, these leakage points still cause a large amount of electromagnetic radiation to escape, which has potential adverse effects on surrounding electronic equipment, communication system and human health, in addition, traditional shielding cover also has defects in structural design, such as poor sealing at connection, which is easy to cause electromagnetic radiation to leak from gap, further reducing the overall shielding effect. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides an environmental protection type low electromagnetic radiation electronic ballast, aiming at improving the problem that shielding cover outside traditional environmental protection type low electromagnetic radiation electronic ballast is mostly made of simple metal material, and there are defects in structural design, which further leads to poor overall shielding effect.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: An environmental protection type low electromagnetic radiation electronic ballast, including shield case and electronic ballast body, the inner wall of the shield case is fixedly connected with the filling layer, the inner wall of the filling layer is fixedly connected with the shielding layer, one side of the outer wall of the shield case is provided with the connecting seat, the outer wall of the connecting seat is fixedly connected with the connecting head, one side of the outer wall of the connecting seat is provided with the connecting assembly, the connecting assembly is used for guaranteeing the sealing property of the connecting place of shield case, the connecting assembly includes rubber seal frame, one side of the outer wall of the rubber seal frame is fixedly connected in one side of the outer wall of the connecting seat, the inner wall of the shield case is fixedly connected with the connecting plate, the inside of the connecting plate is provided with the sealing groove, the sealing groove is used for and the rubber seal frame sealed butt joint, one side of the outer wall of the shield case is fixedly connected with the butt joint frame.

[0007] Further, the inner wall of the connecting seat is provided with the butt joint groove, and the butt joint groove is used for butt joint with the butt joint frame.

[0008] Further, the outer wall of the shield case is fixedly connected with the heat dissipation fin, and the inside of the shield case is provided with the heat dissipation groove.

[0009] Further, the inside of the shield case is provided with the ventilation hole, and the inside of the ventilation hole is provided with the electromagnetic shielding net.

[0010] Further, the electromagnetic shielding net is used for blocking electromagnetic radiation.

[0011] Further, the inside of the connecting seat is fixedly connected with the fixing piece, and the outer wall of the connecting seat is fixedly connected with the connecting piece.

[0012] Further, the fixing piece is used for fixing the connecting seat to one side of the outer wall of the shield case.

[0013] Further, the filling layer is used for further blocking the leaked electromagnetic energy.

[0014] The utility model has the advantages of the following:

[0015] 1. In the utility model, the butt joint frame and the butt joint groove are arranged in butt joint, the preliminary positioning and connection of the shield case are realized, the rubber seal frame and the sealing groove are sealed in butt joint, the good elasticity and sealing property of the rubber seal frame effectively fill the butt joint gap, electromagnetic radiation is effectively prevented from leaking from the connecting part, the shield layer adopts the ferromagnetic material with high magnetic permeability, the shield case is made of the metal copper with high electrical conductivity, the filling layer is filled with electromagnetic wave absorbing material, and the three-layer shielding structure is combined, electromagnetic radiation can be limited in the ballast, the shielding efficiency of the whole is effectively improved, and electromagnetic interference on the external environment is reduced.

[0016] 2. The utility model discloses a shielding cover, electronic ballast body, connecting seat, rubber sealing frame, connecting plate, sealing groove, butt joint frame, shielding layer, filling layer, heat dissipation fin, electromagnetic shielding net, ventilation hole, heat dissipation groove, connecting head, connecting piece, fixed part, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A three-dimensional structure schematic diagram of an environmental protection type low electromagnetic radiation electronic ballast is provided for the utility model.

[0018] Figure 2 A butt joint frame part structure schematic diagram of an environmental protection type low electromagnetic radiation electronic ballast is provided for the utility model.

[0019] Figure 3 A ventilation hole part structure schematic diagram of an environmental protection type low electromagnetic radiation electronic ballast is provided for the utility model.

[0020] Figure 4 A Figure 3 enlarged view of A in the figure.

[0021] LEGEND:

[0022] 1, shielding cover, 2, electronic ballast body, 3, connecting seat, 4, rubber sealing frame, 5, connecting plate, 6, sealing groove, 7, butt joint frame, 8, shielding layer, 9, filling layer, 10, heat dissipation fin, 11, electromagnetic shielding net, 12, ventilation hole, 13, heat dissipation groove, 14, connecting head, 15, connecting piece, 16, fixed part. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0024] Refer to Figure 1 - Figure 3The utility model provides an embodiment: an environmental protection type low electromagnetic radiation electronic ballast, including shielded case 1 and electronic ballast body 2, shielded case 1 inner wall fixedly connected with filling layer 9, filling layer 9 inner wall fixedly connected with shielding layer 8, when electronic ballast body 2 generates electromagnetic radiation, through the setting of shielding layer 8, shielding layer 8 adopts high permeability's ferromagnetic material filling, and ferromagnetic material can effectively absorb and attenuate low frequency magnetic field radiation, and the outermost shielding case 1 adopts the metal copper with high conductivity and makes, therefore shielding case 1 can shield high frequency electric field radiation, and such combination can cope with the electromagnetic radiation of electronic ballast in different frequency band, improve integral shielding efficiency, and be provided with filling layer 9 between shielding layer 8 and shielding case 1, and filling layer 9 is filled by electromagnetic wave absorbing material, when electromagnetic radiation penetrates shielding case 1, and wave absorbing material can convert part of radiation energy into heat energy, further reduce reflected and leaked electromagnetic energy, and the outer wall one side of shielding case 1 is provided with connecting seat 3, and the outer wall one side of connecting seat 3 is fixedly connected with connecting head 14, and the outer wall one side of connecting seat 3 is provided with connecting assembly, and connecting assembly is used for guaranteeing the sealing property of shielding case 1 connecting place, and connecting assembly includes rubber sealing frame 4, and the outer wall one side of rubber sealing frame 4 is fixedly connected in the outer wall one side of connecting seat 3, and the inner wall of shielding case 1 is fixedly connected with connecting plate 5, and the inside of connecting plate 5 is provided with sealing groove 6, and sealing groove 6 is used for and rubber sealing frame 4 sealed butt joint, and the outer wall one side of shielding case 1 is fixedly connected with butt joint frame 7, and the inner wall of connecting seat 3 is provided with butt joint groove, when needing to connect shielding case 1, the butt joint frame 7 of the outer wall one side of shielding case 1 is butt jointed with the butt joint groove of the inner wall of connecting seat 3, realizes the positioning and connection of initially, through the rubber sealing frame 4 of the outside of connecting seat 3, in the butt joint process, rubber sealing frame 4 will be inserted into the sealing groove 6 in the inside of connecting plate 5, forms sealed butt joint, through the good elasticity and sealing property of rubber sealing frame 4, can effectively fill the gap of butt joint, prevents electromagnetic radiation from leaking out from the connecting part, effectively guarantees the sealing property of shielding case 1 connecting place.

[0025] Referring to Figure 3 - Figure 4The outer wall of the shielding cover 1 is fixedly connected with heat dissipation fins 10, the heat dissipation fins 10 are made of aluminum metal material, the electronic ballast generates heat during work, the heat is first transmitted to the shielding cover 1, and the heat is transmitted to the heat dissipation fins 10 through the heat dissipation fins 10 arranged on the outer wall of the shielding cover 1, the aluminum has good thermal conductivity, so that the heat can be rapidly spread in the inside, at the same time, after the heat is conducted from the shielding cover 1 to the heat dissipation fins 10, the heat is dissipated to the surrounding environment through the heat exchange between the heat dissipation fins 10 and the surrounding air, the shielding cover 1 is internally provided with heat dissipation grooves 13, the arrangement of the heat dissipation grooves 13 is helpful to the more uniform distribution of the heat in the shielding cover 1, and further promotes the heat dissipation, the shielding cover 1 is internally provided with ventilation holes 12, the electromagnetic shielding net 11 is arranged in the ventilation holes 12, the electromagnetic shielding net 11 can not only ensure that the ventilation holes 12 have sufficient ventilation, but also effectively block the electromagnetic radiation, through the arrangement of the ventilation holes 12, the circulation of the air in the inside and outside of the shielding cover 1 is ensured, the heat is further taken away, the electromagnetic radiation is prevented from leaking out through the ventilation holes 12, the fixed part 16 is fixedly connected in the connecting seat 3, and the connecting part 15 is fixedly connected on one side of the outer wall of the connecting seat 3.

[0026] Working principle: when the electronic ballast body 2 generates electromagnetic radiation, the shielding layer 8 is arranged, the shielding layer 8 is filled with high-permeability ferromagnetic material, the ferromagnetic material can effectively absorb and attenuate low-frequency magnetic field radiation, and the outermost shielding cover 1 is made of high-conductivity metal copper, so that the shielding cover 1 can shield high-frequency electric field radiation, such a combination can cope with electromagnetic radiation generated by the electronic ballast at different frequency bands, improve the overall shielding effectiveness, and the filling layer 9 is arranged between the shielding layer 8 and the shielding cover 1, the filling layer 9 is filled with electromagnetic wave absorbing material, when the electromagnetic radiation penetrates the shielding cover 1, the absorbing material can convert part of the radiation energy into heat energy, further reducing the reflected and leaked electromagnetic energy;

[0027] When the shielding cover 1 needs to be connected, the butt joint frame 7 on one side of the outer wall of the shielding cover 1 is butted with the butt joint groove formed in the inner wall of the connecting seat 3, so as to realize preliminary positioning and connection, the rubber sealing frame 4 arranged on the outer side of the connecting seat 3 is inserted into the sealing groove 6 in the connecting plate 5 during the butt joint process, so as to form a sealed butt joint, through the good elasticity and sealing property of the rubber sealing frame 4, the gap at the butt joint can be effectively filled, so as to prevent electromagnetic radiation from leaking out from the connecting part, and the sealing property of the connecting part of the shielding cover 1 is effectively ensured;

[0028] The electronic ballast generates heat during operation, which is firstly transferred to the shielding cover 1, and then transferred to the heat dissipation fins 10 arranged on the outer wall of the shielding cover 1, and the heat dissipation fins 10 are made of aluminum, which has good heat conductivity, so that the heat can be rapidly spread in the heat dissipation fins 10, and the heat is dissipated to the ambient environment through heat exchange between the heat dissipation fins 10 and the surrounding air. The heat dissipation grooves 13 are arranged to help the heat to be more evenly distributed in the shielding cover 1, and further promote the heat dissipation. The air flow between the inside and outside of the shielding cover 1 is ensured through the air vents 12, so that the heat is further taken away, and the electromagnetic shielding net 11 arranged in the air vents 12 can not only ensure that the air vents 12 have sufficient ventilation, so that the air can flow smoothly, but also effectively block the electromagnetic radiation, so that the electromagnetic radiation is prevented from leaking out through the air vents 12.

[0029] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. An environmentally friendly low electromagnetic radiation electronic ballast comprising a shield (1) and an electronic ballast body (2), characterized in that: The inner wall of the shielding cover (1) is fixedly connected with a filling layer (9), the inner wall of the filling layer (9) is fixedly connected with a shielding layer (8), one side of the outer wall of the shielding cover (1) is provided with a connecting seat (3), the outer wall of the connecting seat (3) is fixedly connected with a connecting head (14), one side of the outer wall of the connecting seat (3) is provided with a connecting assembly, and the connecting assembly is used to ensure the sealing performance of the connecting part of the shielding cover (1). The connecting assembly comprises a rubber sealing frame (4), one side of the outer wall of the rubber sealing frame (4) is fixedly connected with the outer wall of the connecting seat (3), the inner wall of the shielding cover (1) is fixedly connected with a connecting plate (5), the connecting plate (5) is internally provided with a sealing groove (6), the sealing groove (6) is used to be sealingly connected with the rubber sealing frame (4), and one side of the outer wall of the shielding cover (1) is fixedly connected with a butt joint frame (7).

2. The environmentally friendly low electromagnetic radiation electronic ballast according to claim 1, wherein: The inner wall of the connecting seat (3) is provided with a butt joint groove, and the butt joint groove is used to be butt jointed with the butt joint frame (7).

3. The environmentally friendly low electromagnetic radiation electronic ballast according to claim 1, characterized in that: The outer wall of the shielding cover (1) is fixedly connected with a heat dissipation fin (10), and the shielding cover (1) is internally provided with a heat dissipation groove (13).

4. An environmentally friendly low electromagnetic radiation electronic ballast according to claim 3, characterized in that: The shielding cover (1) is internally provided with a ventilation hole (12), and the ventilation hole (12) is internally provided with an electromagnetic shielding net (11).

5. An environmentally friendly low electromagnetic radiation electronic ballast according to claim 4, characterized in that: The electromagnetic shielding net (11) is used to block electromagnetic radiation.

6. The environmentally friendly low electromagnetic radiation electronic ballast according to claim 1, wherein: the first and second inductors are connected in series. The inner wall of the connecting seat (3) is fixedly connected with a fixing piece (16), and the outer wall of the connecting seat (3) is fixedly connected with a connecting piece (15).

7. An environmentally friendly low electromagnetic radiation electronic ballast according to claim 6, characterized in that: The fixing piece (16) is used to fix the connecting seat (3) on one side of the outer wall of the shielding cover (1).

8. The environmentally friendly low electromagnetic radiation electronic ballast according to claim 1, wherein: the first and second inductors are coupled in series between the input and the output of the ballast. The filling layer (9) is used to further block the leaked electromagnetic energy.

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