TWI717248B - Lamp structure - Google Patents

Abstract

A lamp structure is provided, including a circuit board, a light unit, a conductive sleeve and an anti-electromagnetic interference member. The light unit is positioned on the circuit board. The conductive sleeve penetrates through the circuit board. The conductive sleeve has a channel. The anti-electromagnetic interference member is positioned on the circuit board. The anti-electromagnetic interference member has a ground connection pin. The ground connection pin penetrates through the channel and is electrical connected with the conductive sleeve.

Description

Bulb structure

The present invention relates to a bulb structure, and particularly relates to a bulb structure.

Electronic interference (Electromagnetic Interference, EMI) is relatively simple to explain as electronic equipment in the operation process, produce electromagnetic interference to other equipment in the environment. For example, the electromagnetic waves of the mobile phone cause abnormal noise from the speaker, or the light bulb (such as LED light) interferes with the signal transmission of the radio, the radio reception is poor, or the snow is generated when the TV screen is displayed.

In the above example, the electronic interference of light bulbs needs to be prevented most. The reason is that people are accustomed to living in a bright environment, so light bulbs can be seen everywhere in daily life. It can be seen that once the light bulb produces electronic interference, it will affect the same environment. Most of the equipment products cause serious interference, causing other products to fail to operate smoothly.

Therefore, it is necessary to provide a novel and progressive bulb structure to solve the above-mentioned problems.

The main purpose of the present invention is to provide a bulb structure that prevents electronic interference during operation of the bulb by adding anti-electromagnetic interference components, and greatly improves the reliability of electrical grounding of the anti-electromagnetic interference components by installing a conductive kit on the circuit board .

To achieve the above objective, the present invention provides a light bulb structure, which includes: a circuit substrate, a light-emitting unit, a conductive sleeve, and an anti-electromagnetic interference element. The circuit substrate includes an insulating layer, an intermediate layer, and a conductive layer connected in sequence; the light-emitting unit is positioned on the circuit substrate; the conductive sleeve is placed on the circuit substrate, and the conductive sleeve and the conductive layer are electrically connected For sexual contact, the conductive sleeve surrounds a channel; the anti-electromagnetic interference element is positioned on the circuit substrate, and the anti-electromagnetic interference element includes a ground pin, and the ground pin penetrates the channel to electrically connect the conductive sleeve.

The following examples are only used to illustrate the possible implementation aspects of the present invention, but they are not intended to limit the scope of protection of the present invention, and are described first.

Please refer to FIGS. 1 to 5, which show the first embodiment of the present invention. The bulb structure of the present invention includes: a circuit substrate 1, a light-emitting unit 2, a conductive sleeve 3, and an anti-electromagnetic interference component 4.

The circuit substrate 1 includes an insulating layer 11, an intermediate layer 12, and a conductive layer 13 connected in sequence. The intermediate layer 12 is a circuit board layer. The conductive layer 13 is used to maintain electrical connection with the ground circuit. The unit 2 is positioned on the circuit substrate 1 for receiving power and signals to emit light. In the first embodiment, the light-emitting unit 2 includes a plurality of LEDs 21 arranged in a ring shape. The conductive sleeve 3 is placed on the circuit substrate 1 through and is in electrical contact with the conductive layer 13 to form an extensible circuit contact. The conductive sleeve 3 defines a channel 31.

The anti-electromagnetic interference element 4 is positioned on the circuit substrate 1, and the anti-electromagnetic interference element 4 includes a ground pin 41 that is electrically connected to the conductive sleeve 3 through the channel 31, and the anti-electromagnetic interference element 4 The interference element 4 is grounded through the ground pin 41, the conductive package 3, and the conductive layer 13, so as to provide a catharsis way to remove the mid-high frequency noise (such as common mode noise) and noise energy (such as The current) leaks to the grounding point, thereby apportioning the amount of interference to achieve the purpose of anti-electromagnetic interference of the bulb structure; wherein, the purpose of the conductive set 3 is to greatly increase the contact area with the grounding pin 41, To ensure that the ground pin 41 can be 100% electrically connected with the conductive layer 13.

In the first embodiment, the material of the conductive layer 13 is aluminum, which not only has the function of conducting electricity, but also has excellent thermal conductivity, which can quickly assist the heat dissipation of electronic components; the material of the conductive set 3 is copper, which has Good electrical conductivity, convenience, and easy processing. The anti-electromagnetic interference component 4 uses a capacitor, which not only has the ability to discharge noise current, but also protects other precision electronic components from noise impact and damage .

It is further explained that the conductive sleeve 3 preferably passes through the circuit substrate 1, and the two ends of the conductive sleeve 3 abut against the insulating layer 11 and the conductive layer 13, respectively, so that the conductive sleeve 3 can be stabilized Ground is combined with the circuit substrate 1 and has the advantage of maximizing the contact area. In the first embodiment, the conductive sleeve 3 is set on the circuit substrate 1 through the riveting method, which has the advantages of easy processing and assembly and can be automated by a special riveting device, which is convenient and fast.

Furthermore, the side of the circuit substrate 1 provided with the insulating layer 11 is defined as a first side surface 14, and the side of the circuit substrate 1 provided with the conductive layer 13 is defined as a second side surface 15. The light emitting unit 2 is located on the first side surface 14, the anti-electromagnetic interference element 4 is located on the second side surface 15, adopting a side-by-side structure configuration, so that the light emitted by the light emitting unit 2 will not be shielded, and the light emitting unit 2 The heat generated will not accumulate and affect other electronic components. In the first embodiment, the ground pin 41 passes through the channel 31 from the second side surface 15 and protrudes to the first side surface 14, and a solder 5 solders the ground pin 41 on the first side surface 14. With the conductive sleeve 3, the ground pin 41, the solder 5, the conductive sleeve 3 and the conductive layer 13 are electrically connected to form a ground path, and the solder 5 can simultaneously fix the ground pin 41 and the conductive sleeve The effect of 3 is a method of doing two things with one stone; among them, the welding operation can also be automated by a special welding device to speed up production efficiency.

It is worth mentioning that when the ground pin 41 passes through the channel 31 from the second side surface 15, the ground pin 41 will abut the conductive sleeve 3 inside the channel 31 to achieve electrical contact. The purpose. Preferably, when the radial dimension of the channel 31 and the radial dimension of the ground pin 41 are similar, when viewed from the longitudinal section of the conductive sleeve 3, the opposite sides of the ground pin 41 are on the channel 31 The inside is abutted against the conductive sleeve 3, like a tight fit, and can achieve the purpose of positioning and electrical contact at the same time, and the soldering of the solder 5 can improve the reliability and stability.

Of course, it is not limited to the above aspect. As shown in the second embodiment of FIG. 6, the radial dimension of the channel 31A is larger than the radial dimension of the ground pin 41A, and the ground pin 41A only abuts the channel 31A on one side, and is supplemented by solder 5A Penetrate into the channel 31A to connect and position the ground pin 41A and the conductive sleeve 3A. Or, as shown in the third embodiment of FIG. 7, one end of the ground pin 41B passes through the channel 31B and then abuts against the conductive sleeve 3B on the first side surface 14B in a turning shape to increase the ground pin 41B and the The contact area of the conductive sleeve 3B is similarly, supplemented by the solder 5B penetrating into the channel 31B to strengthen the connection relationship.

Please further refer to the first embodiment of FIGS. 1 to 5, the bulb structure further includes a housing assembly 6, including a lamp holder 61 and a lamp shade 62, the lamp shade 62 covers the lamp holder 61, and the circuit board 1 is positioned on the lamp holder 61, the insulating layer 11 faces the lamp shade 62, and the conductive layer 13 is pressed against the lamp holder 61. Wherein, the inner surface of the lamp holder 61 is provided with an aluminum layer 611, and the conductive layer 13 laterally abuts the aluminum layer 611 to achieve the dual purpose of electrical contact and heat conduction at the same time.

Specifically, the lamp holder 61 further includes a positioning groove 612 and a plurality of stopping portions 613. The plurality of stopping portions 613 protrude laterally from the positioning groove 612, and the circuit board 1 is accommodated in the positioning groove. 612, a clamping portion 621 of the lampshade 62 extends into the positioning groove 612 to press against the circuit substrate 1 and block the plurality of blocking portions 613, thereby enabling the circuit substrate 1 to be stably positioned.

In summary, the lamp structure of the present invention takes into account the problem of electromagnetic interference, and then adds a capacitor as an anti-electromagnetic interference component to solve it. At the same time, the conductive sleeve is positioned through the circuit substrate to allow the pins of the capacitor to electrically contact and be grounded. In addition, the use of riveting of the conductive kit can improve the reliability of the combination and positioning, and the supplementary solder can ensure that the pins of the capacitor and the conductive kit can be 100% contacted and grounded, so as to form a leak path to achieve the purpose of anti-electromagnetic interference. In addition, both the riveting and welding process can be handled by a special machine, which has the effect of automatic and rapid production.

1: Circuit board 11: Insulation layer 12: Middle layer 13: conductive layer 14,14B: First side 15: second side 2: Light-emitting unit 21: LED 3, 3A, 3B: conductive kit 31, 31A, 31B: channel 4: Anti-electromagnetic interference components 41, 41A, 41B: ground pin 5, 5A, 5B: solder 6: Shell components 61: Lamp holder 611: Aluminum layer 612: positioning groove 613: Stop 62: Lampshade 621: Card Department

Fig. 1 is a perspective view of the first embodiment of the present invention. Figure 2 is an exploded view of Figure 1. 3 is another perspective view of the circuit substrate according to an embodiment of the invention. Figure 4 is a cross-sectional view of Figure 1. Figure 5 is a partial enlarged view of Figure 4. Fig. 6 is a partial enlarged cross-sectional view of the second embodiment of the present invention. Fig. 7 is a partial enlarged cross-sectional view of the third embodiment of the present invention.

1: Circuit board

13: conductive layer

3: Conductive kit

4: Anti-electromagnetic interference components

41: Ground pin

Claims (10)

A light bulb structure, including: A circuit substrate including an insulating layer, an intermediate layer and a conductive layer connected in sequence; A light-emitting unit positioned on the circuit substrate; A conductive sleeve is placed on the circuit substrate and is in electrical contact with the conductive layer, and a channel is enclosed; and An anti-electromagnetic interference component is positioned on the circuit substrate and includes a ground pin, and the ground pin passes through the channel and is electrically connected to the conductive sleeve. The light bulb structure according to claim 1, wherein the conductive sleeve passes through the circuit substrate, and two ends of the conductive sleeve abut the insulating layer and the conductive layer, respectively. The light bulb structure according to claim 2, wherein the side of the circuit substrate provided with the insulating layer is defined as a first side surface, the side of the circuit substrate provided with the conductive layer is defined as a second side surface, and the light emitting unit Located on the first side surface, the anti-electromagnetic interference component is located on the second side surface, the ground pin passes through the channel from the second side surface and protrudes to the first side surface, and a solder is soldered to the first side surface The ground pin is electrically connected with the conductive sleeve, and then the ground pin, the solder, the conductive sleeve and the conductive layer are electrically connected. The light bulb structure according to claim 3, wherein the ground pin abuts against the conductive sleeve inside the channel. The light bulb structure according to claim 3, wherein one end of the ground pin passes through the channel and abuts against the conductive sleeve on the first side in a turning shape. The light bulb structure according to claim 1, further comprising a housing assembly including a lamp holder and a lamp shade, the lamp shade is disposed on the lamp holder, the circuit board is positioned on the lamp holder, and the insulating layer faces the lamp shade, The conductive laminate is pressed against the lamp holder. The light bulb structure according to claim 6, wherein an aluminum layer is provided on the inner surface of the lamp holder, and the conductive layer laterally abuts against the aluminum layer. The light bulb structure according to any one of claims 1 to 7, wherein the conductive sleeve is set on the circuit substrate through a riveting method. The light bulb structure according to any one of claims 1 to 7, wherein the anti-electromagnetic interference component is a capacitor. The light bulb structure according to claim 4, further comprising a housing assembly including a lamp holder and a lamp shade, the lamp shade is arranged on the lamp holder, the circuit board is positioned on the lamp holder, and the insulating layer faces the lamp shade, The conductive laminate is pressed against the lamp holder; the inner surface of the lamp holder is provided with an aluminum layer, and the conductive layer laterally abuts against the aluminum layer; the conductive sleeve is set on the circuit substrate through a riveting method; the The anti-electromagnetic interference component selects a capacitor; the lamp holder further includes a positioning groove and a plurality of stop portions, the plurality of stop portions protrude laterally from the positioning groove, the circuit board is accommodated in the positioning groove, and the lampshade A card portion extends into the positioning groove to press against the circuit substrate and block the plurality of blocking portions; the light emitting unit includes a plurality of LEDs arranged in a ring shape; viewed from the longitudinal section of the conductive sleeve, The two opposite sides of the ground pin abut against the conductive sleeve in the channel; the material of the conductive layer is aluminum; the material of the conductive sleeve is copper.

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