CN202082648U - Reinforced Insulated Bulbs - Google Patents

Abstract

The utility model relates to a reinforce insulating bulb, including a printing opacity cover and a connection of electricity seat, a radiator and the equipment seat of installing between this printing opacity cover and connection of electricity seat, at least one locates the light source base plate in this printing opacity cover, and the electric power conversion board of this light source base plate of an electric connection and connection of electricity seat, wherein have one in this radiator and hold the installation space of establishing this electric power conversion board, this bulb still includes one and puts the isolator in this installation space, this isolator contains a circuit accommodation space in order to form this electric power conversion board of holding between this electric power conversion board and radiator, and one is located the wire hole that makes electric power conversion board can be qualified for the next round of competitions and connect the light source base plate on this isolator. The utility model provides an use power conversion board, high-power emitting diode to have enough insulating ability and pass through the emitting diode bulb of ann's rule test.

Description

Reinforced Insulated Bulbs

technical field

The utility model relates to a light bulb with reinforced insulation, in particular to a light bulb structure using a power conversion board to drive at least one light-emitting diode, and further includes an isolator to strengthen the insulation capacity of the power conversion board.

Background technique

Since light-emitting diodes (LEDs) have many advantages such as long service life, low power consumption, high brightness and more environmentally friendly materials, with the progress of light-emitting diode technology and the reduction of costs, in addition to the signs used in traffic lights or electrical appliances In addition to the number, it is further used in environmental decoration and lighting lamps. In order to make light-emitting diodes applicable to general light bulbs, existing technologies combine light-emitting diodes with existing light bulb shells, such as China Taiwan Patent Certificate No. I293807 "Light-Emitting Diode Light Bulbs with Constant Current Circuits", the previous patent A light-emitting diode bulb is disclosed, which includes a lamp cap, a lamp shell, a plurality of series-connected light-emitting diodes and a step-down constant current circuit. The lamp cap has electrodes connected to the power supply, and a plurality of LEDs are connected to the step-down constant current circuit to provide a constant current to make the LEDs emit light, and the LED bulbs can be directly used after being mounted on a conventional lamp holder. . However, since a stable DC current is required to drive the light-emitting diode, the drive circuit that converts the AC mains power into a DC current will continuously generate and accumulate waste heat during the conversion process. Furthermore, the direct current passing through the impedance of the light-emitting diodes also produces a lot of waste heat, and the excessively high temperature under long-term use will damage the light-emitting diodes or the driving circuit, or shorten the service life. Therefore, the industry has developed a variety of light-emitting diode bulbs with heat dissipation structures, as shown in Taiwan Patent Certificate No. M358247 "LED Lamps Suitable for Various Lamp Holders". Opening, an annular buckle groove is formed on the periphery of the opening to combine with the corresponding lamp head, and the other end of the opening is combined with an LED light-emitting element, so that the LED light-emitting element is electrically connected to the lamp head, and the LED heat dissipation module is located in the LED light-emitting The components and the periphery of the lamp holder play the role of heat conduction. Similar LED light bulbs using metal heat sinks can also be found in Taiwan Patent Certificate No. M345944, No. M381743 and Publication No. 201020457.

Many of the above-mentioned previous proposals use metal radiators (usually aluminum radiators) to enhance heat dissipation, further enabling the bulb to withstand higher power without burning out. However, almost all of the existing light-emitting diode bulbs are equipped with RC step-down passive power supplies (hereinafter referred to as "passive power supplies"), which are powered by a rectifier circuit. The passive power supply has the problem of poor efficiency when outputting high power, and the circuit volume increases when the power is increased. The reason why the existing LED light bulbs use passive power supply is that it is easier to pass the safety test.

In order to further increase the power of LED light bulbs, switching power supply is a better choice for power consumption efficiency. However, the use of switching power supplies must pass strict safety tests, including at least a high-voltage electrical test. During the test, a voltage of nearly 4,000 volts is applied around the bulb and it is necessary to ensure insulation between the switching power supply in the bulb and the external voltage. In the prior art of using the passive power supply, the passive power supply is covered with a shrink film and filled with glue mainly used for positioning, and the glue can also enhance the insulation effect. However, the test results have confirmed that the method of covering the switching power supply with shrink film and adding glue on the periphery cannot pass the high-voltage electrical test.

Based on the need to increase power, the industry must consider switching power supply, but it must further overcome the safety test. Due to the heat dissipation requirements of high-power LED bulbs, metal heat sinks are required for LEDs, which makes it difficult to overcome safety testing. The two factors contradict each other, causing difficulties in the design of the industry.

Utility model content

Since the LED light bulb technology is limited by multiple interrelated technical issues such as power improvement, conversion efficiency, and safety testing, and the existing LED light bulb structure is still difficult to overcome the aforementioned problems at the same time. Therefore, the purpose of this utility model is to provide an improved light emitting diode light bulb, which provides an isolation structure with enhanced insulation effect and isolates the power conversion substrate that drives the light emitting diode to emit light, so as to achieve ideal insulation effect. In this way, high-efficiency power conversion and output can be achieved, and strict safety tests can be passed.

In order to achieve the above object, the utility model provides a light bulb with reinforced insulation, which includes a light-transmitting cover and a power-connecting seat, a radiator and an assembly seat installed between the light-transmitting cover and the power-connecting seat, at least A light source substrate arranged in the transparent cover, and a power conversion board electrically connected to the light source substrate and the power socket, wherein the heat sink has an installation space for accommodating the power conversion board, and the light bulb also includes An isolator arranged in the installation space, the isolator includes a partition wall between the power conversion board and the radiator to form a circuit accommodating space for the power conversion board, and a The outlet hole on the partition wall allows the power conversion board to be connected to the light source substrate.

In the light bulb with reinforced insulation of the utility model, the assembly seat has an insulating wall, and the inner edge of the insulating wall is tightly joined with the partition wall.

According to the reinforced insulation light bulb of the utility model, the partition wall and the insulation wall have a reduced outer edge and a reduced inner edge which are complementary and pressed together.

In the light bulb with enhanced insulation of the present invention, the assembly seat and the radiator have at least one first positioning portion and a second positioning portion that are engaged with each other.

In the light bulb with enhanced insulation of the present invention, the first positioning portion and the second positioning portion are notches and protrusions that are correspondingly fastened.

The light bulb with enhanced insulation of the utility model, wherein the assembly seat has a joint part located outside the installation space and combined with a power socket.

In the light bulb with enhanced insulation of the present invention, the isolator is provided with a protruding portion on the periphery of the outlet hole.

In the light bulb with enhanced insulation of the present invention, the light source substrate has a wiring hole communicating with the installation space through which at least one power wire passes through to electrically connect with the light source substrate.

In the light bulb with enhanced insulation of the utility model, the protruding part is embedded in the wiring hole of the light source substrate.

In the light bulb with enhanced insulation of the present invention, the light source substrate has a wiring hole communicating with the installation space through which at least one power wire passes through to electrically connect with the light source substrate.

In the light bulb with reinforced insulation of the present invention, the light source substrate is an aluminum substrate including a plurality of conductive lines.

In the light bulb with enhanced insulation of the present invention, the radiator has a plurality of heat dissipation fins arranged in layers, and the heat dissipation fins have a plurality of through holes forming at least one airflow channel.

The reinforced insulation light bulb of the utility model, wherein the partition wall extends between the power conversion board and the power socket, and has another outlet hole on the partition wall so that the power conversion board can be connected to the power socket. .

In the light bulb with enhanced insulation of the utility model, the power conversion board is a switching power supply circuit.

Through the combination of the isolator and the assembly base, the power conversion board can be completely separated from the radiator, greatly enhancing the insulation capacity. Through the enhanced insulation capability, the power conversion board can be further used to provide higher power and conversion efficiency. A plurality of light-emitting diodes and a plurality of conductive lines are arranged through the light source substrate, so that the high-power light-emitting diodes can conduct heat to the radiator more quickly through the light source substrate. In summary, through the above structural features, a light emitting diode light bulb that can use a power conversion board, a high power light emitting diode, and has sufficient insulation capability to pass the safety test is provided.

Description of drawings

Fig. 1 is the exploded view of light-emitting diode bulb of the present invention;

FIG. 2 is a schematic diagram of the assembly of the light-emitting diode bulb;

3 is a cross-sectional view of the light-emitting diode;

Fig. 4 is a cross-sectional view of another embodiment in which the isolator is tightly fitted with the assembly seat.

Detailed ways

The utility model is a light bulb with reinforced insulation. The technical content of the utility model will be described below with reference to the accompanying drawings. Please refer to Fig. 1, Fig. 2 and Fig. 3, Fig. 1 to Fig. 3 show the first embodiment of the case, the light bulb disclosed in the first embodiment includes a light-transmitting cover 5 and a power socket 6, A cooling body 4 and assembly seat 2 installed between the light-transmitting cover 5 and the electrical socket 6, at least one light source substrate 40 arranged in the light-transmitting cover 5, and an electrical connection between the light source substrate 40 and the The power conversion board 3 of the power socket 6. Preferably, the power conversion board 3 is a switching power supply circuit. The radiator 4 has an installation space 41 for accommodating the power conversion board 3 . And the bulb also includes an isolator 1, which includes a partition wall 10 between the power conversion board 3 and the radiator 4 to form a circuit accommodating space 14 for accommodating the power conversion board 3, and An outlet hole 12 located on the partition wall 10 allows the power conversion board 3 to be connected to the light source substrate 40 . And in order to pass the safety test, the isolator 1 is provided with a protruding portion 13 around the outlet hole 12 to avoid high-voltage electric breakdown. In the embodiments shown in FIGS. 1 to 3 , the partition wall 10 continuously covers the upper side and the surrounding sides of the power conversion board 3 . The partition wall 10 is provided with a joint portion 11, and the assembly seat 2 is respectively provided with a continuous insulating wall 21 and a joint portion 22 on both sides, wherein the outer edge of the insulating wall 21 is provided with at least a first positioning portion 211, the The joint portion 11 of the partition wall 10 is pressed against the inner edge of the insulating wall 21 (as shown in FIG. 4 ). Alternatively, in order to facilitate the jointing of the insulating wall 21 with the joint portion 11, the joint portion 11 may have a reduced outer edge, and the inner edge of the partition wall 21 correspondingly has a reduced inner edge 212 ( As shown in Figures 1 to 3), but the utility model diagram is only an implementable aspect, and does not limit the junction 11, the partition wall 21 must be provided with a reduced outer edge, a reduced inner edge 212, this technical field Aspects that can be easily changed by those with ordinary knowledge should be included in the protection scope of the present utility model. The joint between the joint portion 11 and the inner edge of the insulating wall 21 ensures that the power conversion board 3 is insulated and partitioned in the circuit accommodating space 14 .

The radiator 4 is provided with a light source substrate 40 having a plurality of LEDs 401 . The light source substrate 40 can be an aluminum substrate containing a plurality of conductive lines. In the prior art, it can be formed by stacking copper foil, heat-conducting insulating material and aluminum plate. The copper foil is etched into a circuit and then covered with heat-conducting insulating material, Among the aluminum plates, a light source substrate 40 including conductive lines is formed. Since the aluminum substrate is a currently known technology, although the utility model uses the technology of the aluminum substrate, the manufacturing technology and detailed structure of the aluminum substrate are not the technical focus of the present utility model. , so no more details. The radiator 4 reserves a fitting portion 410 , and the light source substrate 40 is squeezed tightly into the fitting portion 410 by means of extrusion, so that the light source substrate 40 is firmly combined with the radiator 4 . Therefore, the heat sink 4 and the inner edge of the light source substrate 40 form an installation space 41 with an opening to accommodate the isolation body 1 and the insulating wall 21, and the light source substrate 40 has a wiring hole communicating with the installation space 41. 402. The inner edge of the heat sink 4 has at least one second positioning portion 411 corresponding to the first positioning portion 211 on the insulating wall 21. bumps, so that the insulating wall 21 and the isolator 1 are covered in the installation space 41 . At least one power wire 30 connected to the power conversion board 3 can pass through the outlet hole 13 on the partition wall 10 and the wiring hole 402 on the light source substrate 40 to make the power conversion board 3 and the light emitting diodes 401 electrically sexual connection. Moreover, the protruding portion 13 can be inserted into the wiring hole 402 .

Through the above-mentioned technology, the power conversion board 3 can be installed in the LED light bulb, and the power conversion board 3 can be isolated and protected in the circuit accommodating space 14 through the isolator 1 and the assembly seat 2 . Furthermore, there is an air gap between the isolation wall 10 of the isolation body 1 and the inner edge of the radiator 4 , which can ensure that the high voltage in the safety test cannot damage the power conversion board 3 .

In Fig. 1 to Fig. 3, it can be seen that the joint portion 22 of the assembly seat 2 is located outside the installation space 41, and the joint portion 22 is combined with a joint end 61 of a power connection base 6, and the power connection base 6 It is used to connect to an external power source, and electrically connects the power conversion board 3 and the power socket 6 through at least one power wire 31 , so as to send the power conducted from the external power source to the power conversion board 3 . Depending on the type of light bulb or the application environment, a variety of different types of sockets 6 can be selected. The types quoted in Figures 1 to 3 are the types of general household light bulbs, but the sockets 6 are not limited to 1 to the configuration shown in Figure 3.

Moreover, the radiator 4 is provided with a positioning groove 44 outside the fitting portion 410, and the positioning groove 44 is used to fix the aforementioned light-transmitting cover 5. The light-transmitting cover 5 has a neck 50, and the neck 50 can be tightened. Fit in the positioning groove 44 , or at the same time match the glue so that the neck 50 is stuck in the positioning groove 44 .

What Fig. 4 shows is the sectional view of another embodiment of the light bulb, the difference between the embodiment of Fig. 4 and the first embodiment is that, through the dimensional design of the junction 11 and the insulating wall 21, the joint The portion 11 and the inner edge of the insulating wall 21 can be directly tightly fitted and combined without additionally setting a reduced inner edge and a reduced outer edge. Since the direct tight fit method does not need to thin the thickness of the joint portion 11 and the insulating wall 21 , it can have a greater insulating capacity.

In the first embodiment shown in FIGS. 1 to 3 and the second embodiment shown in FIG. 4 , a plurality of cooling fins 42 are stacked on the outer edge of the cooling body 4 , and there are gaps between the cooling fins 42 . Gaps for air circulation. Moreover, the heat dissipation fins 42 have a plurality of through holes 43, and the plurality of through holes 43 of the plurality of heat dissipation fins 42 are correspondingly arranged to pass through the heat dissipation body 4 to form at least one airflow passage for air to pass through longitudinally, and the assembly seat 2 It also includes at least one air guiding portion 23 , the air guiding portion 23 reserves a plurality of air guiding spaces to facilitate the air flow passing through the through holes 43 . The gaps between the heat dissipation fins 42 and the airflow channels allow for horizontal and vertical airflow, and provide a large air contact area to achieve excellent heat dissipation.

Although the aforementioned embodiment defines that the partition wall 10 continuously covers the top and side of the power conversion board 3, the partition wall 10 can extend between the power conversion board 3 and the power socket 6, and has Another outlet hole (not shown in the figure) located on the partition wall 10 enables the power conversion board 3 to be connected to the outlet socket 6 . Although the present invention is disclosed above with preferred embodiments, it is not intended to limit this case. Anyone who is familiar with this technique, without departing from the spirit and scope of the present utility model, and some changes and modifications made should be covered in this case, so the protection scope of the present utility model should be defined by the appended claims prevail.

Claims (14)

1. A light bulb with reinforced insulation, comprising a light-transmitting cover (5) and a power-connecting seat (6), a radiator ( 4) and the assembly seat (2), at least one light source substrate (40) arranged in the transparent cover (5), and a power conversion board electrically connected to the light source substrate (40) and the power connection seat (6) (3), wherein the cooling body (4) has an installation space (41) for accommodating the power conversion board (3), characterized in that the light bulb also includes: An isolator (1) arranged in the installation space (41), the isolator (1) includes a partition wall (10) between the power conversion board (3) and the radiator (4) to Form a circuit accommodating space (14) for accommodating the power conversion board (3), and an outlet hole (12) located on the partition wall (10) so that the power conversion board (3) can be connected to the light source substrate (40) ). 2. The light bulb with reinforced insulation as claimed in claim 1, characterized in that the assembly seat (2) has an insulating wall (21), and the inner edge of the insulating wall (21) is tightly joined to the partition wall (10). 3. The light bulb with reinforced insulation according to claim 2, characterized in that the partition wall (10) and the insulating wall (21) have a reduced outer edge and a reduced inner edge (212) in complementary tight engagement. 4. The light bulb with reinforced insulation according to claim 1, characterized in that the assembly base (2) and the radiator (4) have at least one first positioning part (211) and a second positioning part (211) correspondingly fastened Department (411). 5. The light bulb with reinforced insulation according to claim 4, characterized in that the first positioning portion (211) and the second positioning portion (411) are notches and protrusions that are snapped together correspondingly. 6. The light bulb with reinforced insulation according to claim 1, characterized in that the assembly seat (2) has a joint portion (22) located outside the installation space (41) and combined with a power socket (6) . 7. The light bulb with reinforced insulation as claimed in claim 1, characterized in that the isolator (1) is provided with a protruding portion (13) on the periphery of the outlet hole (12). 8. The light bulb with reinforced insulation according to claim 7, characterized in that the light source substrate (40) has a wiring hole (402) communicating with the installation space (41) for at least one power wire (30) to pass through Then it is electrically connected with the light source substrate (40). 9. The light bulb with reinforced insulation according to claim 8, characterized in that the protrusion (13) is embedded in the wiring hole (402) of the light source substrate (40). 10. The light bulb with reinforced insulation according to claim 1, characterized in that the light source substrate (40) has a wiring hole (402) communicating with the installation space (41) for at least one power wire (30) to pass through Then it is electrically connected with the light source substrate (40). 11. The light bulb with reinforced insulation as claimed in claim 1, characterized in that the light source substrate (40) is an aluminum substrate including a plurality of conductive lines. 12. The light bulb with reinforced insulation as claimed in claim 1, characterized in that the heat sink (4) has a plurality of heat dissipation fins (42) arranged in layers, and the heat dissipation fins (42) have at least one air flow through them. A plurality of through holes (43) for the channel. 13. The light bulb with reinforced insulation according to claim 1, characterized in that the partition wall (10) extends between the power conversion board (3) and the socket (6), and has a ) to allow the power conversion board (3) to be connected to another outlet hole of the power socket (6). 14. The light bulb with reinforced insulation according to claim 1, characterized in that the power conversion board (3) is a switching power supply circuit.

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