TWM420643U - Lighting device and driving structure thereof - Google Patents

Abstract

The present invention discloses a lighting device including a driving structure and a plurality of light-emitting elements arranged on the driving structure. These light-emitting elements are driven by the driving structure. The driving structure includes a light source circuit board and a driving circuit board. In which, a second electrode part is formed in a convex shape and formed on the edge of the driving circuit board. The second electrode part and the driving circuit board are integrally-formed. The light source circuit board includes a first electrode part and a perforation electrically connected thereto. The second electrode part is used to perforate through the perforation to have the driving circuit board electrically connected to the light source circuit board.

Description

Μ420φ43 V. New description: [New technical field] This creation is a kind of lighting device, especially related to a lighting device with high assembly efficiency. [Prior Art] Light Emitting Diode (LED) has been widely used in ordinary life in recent years because of its advantages and advantages of energy saving and power saving, such as display, home appliance, and automotive electronic components. Lamps, etc. are all applications of the light-emitting diode Fan Ming. For example, a household lighting fixture using a light-emitting diode as a light source has the advantages of fast warming time, fast reaction speed, small volume, long life, power saving, shock resistance, low pollution degree, high reliability and suitable mass production. The advantages of traditional incandescent bulbs and neon lights have gradually been replaced. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial structural side view of a conventional illumination device using a light-emitting diode as a light-emitting source, and FIG. 2 is a partial structural view of the illumination device shown in FIG. The illumination device i includes a plurality of light-emitting diodes u, a light source circuit board body 12, and a driving circuit board 丨3; wherein each of the light-emitting diodes includes a light-emitting portion (1), a positive electrode pin 112, and a negative electrode pin 113, and the light source circuit The plate is a metal substrate, which includes a circuit layer 121, an insulating layer 122, and a heat dissipation plate 123 from top to bottom, and the drive circuit board 13 has a second positive electrode contact portion m and a second electrode contact portion 132. Furthermore, the positive electrode pin 112 and the negative electrode pin 113 of each of the light-emitting body electrodes u are respectively soldered to the corresponding positive electrode contact i2n and negative electrode contact 1212 on the circuit layer 121, and each positive electrode contact 1211 Each of the negative electrode contacts i2i2 is electrically connected to a first positive electrode contact portion 1213 of the circuit layer m and a first negative electrode contact portion (2) 4, respectively. In order to electrically connect the driving circuit board 13 and the light source circuit board body 12, between the first positive electrode contact portion 1213 and the second positive electrode contact 131 portion and between the first negative electrode contact portion 1214 and the second negative electrode contact portion 132 Both are connected by a wire μ, whereby power can be transmitted from the driving circuit board to the light source circuit board 12 to drive each of the light-emitting diodes u to emit light. However, since the metal substrate has a preferable heat dissipation effect, the wire and the wire M are not easily attached thereto. Therefore, there is a conventional technique to provide another technical means for connecting the driving circuit board 13 and the light source circuit board body 12 together. For example, Taiwan Patent No. 396364 discloses a light-emitting diode lamp which is provided with a gold finger socket and a gold finger plug on a metal substrate and a driving circuit board, so that the gold finger plug is inserted into the gold finger socket. You can connect the _ circuit board to the light source board. For another example, Taiwan's new patent No. 372430 discloses a kind of LED lamp holder structure which is on the driving circuit board and the light source circuit board body and relative to the "sexual terminal (four) perforation, the wire electric (four) sub-" electric = hole The driver circuit board and the light source circuit board can be connected. However, the above-mentioned conventional technology requires special soldering of the gold finger socket on the metal substrate or soldering the electrical terminal on the driving circuit board, so the process is complicated and the lamp is added. Manufacturing cost. Therefore, the conventional technology still has room for improvement. 5 M420$43 [New content] One of the purposes of this creation is to provide a kind of lighting device. The driving structure, one of the purposes of the creation of this book is to provide - The illuminating device illuminating device assembly efficiency. In a preferred embodiment, the shackle is provided with a driving structure for driving a lighting device for driving at least one of nine illuminating devices to output a plurality of beams, and to

The light-emitting element has an electrical pin and a female front and a front portion. The driving structure comprises: a light source circuit board body including a circuit layer, and the circuit layer has a corresponding electrical pin. - an electrode contact and one of the first electrode portions electrically connected to the electrode contact and the electrode portion of the first electrode portion is provided to the light source circuit board; and

^ - a driving circuit board having an edge formed with a second electrode portion, and the second electrode portion is - convexly shaped and formed integrally with the driving circuit board, wherein the second electrode portion passes through the first portion The perforation of the electrode portion is electrically dependent on the first electrode portion. In a preferred embodiment, the second electrode portion is fixed to the first electrode portion. In a preferred embodiment, the perforation is electrically connected to the first electrode portion, and the second electrode portion is fastened to the through hole. In a preferred embodiment, the second electrode portion is electrically connected to the first electrode portion. The driving circuit board is perpendicular to the light source circuit board. In a preferred embodiment, the light source circuit board system is a metal substrate, and the metal substrate is formed by the circuit layer, the insulating layer, and the heat sink. The insulating layer is located on the circuit layer. Between the heat sink and the heat sink. In a preferred embodiment, the heat sink is formed. The shell or a copper material is constructed in the preferred embodiment, the illumination device comprises a 罝 structure, and 钵 $ _ β ” has a heat dissipation of the contact portion and the ampule member further has a corresponding portion of the contact portion. The circuit board body is more..." "The Ministry of Political Affairs, and the light source anti-rain includes a hole corresponding to the heat dissipation part, /, A, the contact part and the other person." The heat dissipation structure is formed by a gold material. The heat dissipation structure is made of a gold material. n. In a preferred embodiment, the heat dissipation structure is further improved by the hole in the heat dissipation portion of the contact portion. Having one of the perforations corresponding to one of the perforations for the second electrode portion to pass through. In a preferred embodiment, the circuit board further includes an insulating plate, and the circuit layer is formed on the insulating plate. In the example, the s insulating board is made of a material conforming to the RF4 grade. In a preferred embodiment, the light source circuit board further includes an insulating board, and the circuit layer is formed on the insulating layer. Conversely, wherein the insulating plate is a heat-dissipating metal plate passing through the insulating portion. The embodiment of the present invention is a light-emitting diode. In a preferred embodiment J', the present invention also provides a lighting device comprising: 7 at least one light-emitting element having an electrical pin and a light-emitting device a light source circuit board body </ RTI> comprising a thunder h circuit layer, and the circuit layer has an electrode contact corresponding to the read pin and a first electrode portion electrically connected to the electrode contact, and The first electrode portion has at least - and a perforation source board; the drive circuit board has a second electrode portion formed at an edge thereof, and the second electrode is convexly shaped and coupled to the driving circuit board In one embodiment, the 'k electrode portion passes through the through hole of the first electrode portion and is electrically connected to the first electrode portion. In the preferred embodiment, the second electrode portion is soldered @ An electrode portion. In a preferred embodiment, the first electrode portion is electrically connected to the first electrode portion, and the second electrode portion is fastened to the through hole. The two electrode portions are electrically connected to the first electrode p, and the Hi circuit board is perpendicular to the a light source circuit board body. In a preferred embodiment, the light source circuit board system is a metal substrate, and the metal substrate is formed by the circuit layer, an insulating layer and a heat dissipation plate; wherein The rim layer is located between the circuit layer and the heat dissipation plate. In a preferred embodiment, the heat dissipation plate is made of a material of a name or a copper material. In a preferred embodiment, the illuminating device further includes a a heat dissipation portion of a contact portion. The light-emitting portion has a heat-dissipating portion corresponding to the contact portion, and the circuit board body further has a hole corresponding to the heat-dissipating portion; wherein - the other is through the hole. The contact portion and the heat dissipating portion are formed in the preferred embodiment. The heat dissipating structure is made of a metal material or a graphite material. In an embodiment, the thermal recording structure further has a perforation corresponding to one of the perforations for the second electrode portion to pass through. In the preferred embodiment, the light source circuit board body further includes an insulating plate, and the circuit layer is formed on the insulating plate. In a preferred embodiment, the insulating sheet is made of a material that is RF4 rated. In a preferred embodiment, the light source circuit board further includes an insulating plate, and the circuit layer is formed on the insulating plate; wherein the insulating plate is an insulated heat-dissipating metal plate. In a preferred embodiment, the illumination device further includes a housing for housing the light source circuit board body and the driving circuit board. In a preferred embodiment, the light emitting element is a light emitting diode. In a preferred embodiment, the lighting device is applied to indoor lighting, and the lighting device can be a home lighting, a commercial lighting, a light or a bed head light. [Embodiment] The first description is that 'the original lighting device is suitable for indoor lighting, such as a..., a k-commercial lighting, a lamp or a bedside lamp, but it is not limited to this 420$43 creation lighting device. Application area. Please refer to FIG. 3, which is a partial structural diagram of the first preferred embodiment of the authored illumination device. The illuminating device 2 includes a plurality of illuminating elements 2 and a housing 23, wherein the driving structure 22 is configured to drive the plurality of illuminating elements 21 to output light beams, including the light source circuit board body 221 and the driving circuit board 222, and the light emitting elements 21 is disposed on the light source circuit board body 221, and the housing 23 is used to accommodate the driving structure U. In the present embodiment, the light-emitting element 21 is a light-emitting diode, and has a light-emitting portion 211, an electrical pin 212, and a heat-dissipating portion 213, and the electrical pin includes a positive pin 2121 and a negative pin 2122. Month, FIG. 4, which is a schematic diagram of the drive circuit board of FIG. 3 in a preferred embodiment. The driving circuit board 222 includes a driving circuit 2221 and a second electrode portion composed of the second positive electrode contact portion 2222 and the second negative electrode contact portion 3222. The second positive electrode contact portion 2222 and the second negative electrode contact portion are all convex. And forming an edge of the driving circuit board 2221; wherein the second positive electrode contact portion 2222, the second negative electrode contact portion 3222, and the driving circuit board 222 are integrally formed. 4, which is a schematic diagram of the structure of the light source circuit board shown in Fig. 3 in the first embodiment. In this embodiment, the light source circuit board body 221 is a metal substrate including a circuit layer 2211, an insulating layer 2212, and a heat dissipation plate 2213, and the insulating layer 2212 is located between the circuit layer 22UA and the heat dissipation plate 2213. Preferably, the heat dissipation plate 2213 is made of aluminum material or copper material, but is not limited thereto. Furthermore, the circuit layer 2212 includes a plurality of electrode contacts composed of a plurality of positive electrode contacts 2216 Α and a plurality of negative electrode 10 M420643 contacts 7A, and a first electrode composed of a first positive electrode contact portion (four) a and a negative electrode contact portion 2219A. The positive electrode contacts 2216A and the negative electrode contacts 221m are used for soldering the positive electrode pins 2121 and the negative electrode pins 2 j 22 of the light-emitting elements 21 to the bean, B 4 μ The positive electrode contacts 2216 Α are all in a thunderous manner with the first positive electrode contact portion 22 18 捅, and the product β Α 』 is electrically conductive and the negative electrode contacts 221 7 Α are electrically guided to the first negative electrode contact portion 2219 诵. s, the flute τ power-on and the first-positive contact portion 2218 Α and the first negative electrode contact portion 2219 Α respectively $ π , , , / Λ &amp; 匕 , the perforated hole 2214A penetrates the light source circuit board body 22IA. Please refer to FIG. 6 , which is a schematic diagram of the structure of the light source circuit board body shown in FIG. 3 according to the second embodiment. The difference between the light source circuit board body 2 and the first embodiment in the present embodiment is that the 'light source circuit body 221B system, including the circuit layer a· and the insulating plate 2215', the circuit layer 2211B is formed in the absolute layer. ', the seesaw 2215, and the insulating plate 2215 is a heat-dissipating metal plate that is insulated and treated. The heat-dissipating metal plate is made of an aluminum material or a copper material, but not limited thereto. . Further, the circuit layer 2212 includes a plurality of electrode contacts composed of a plurality of positive electrode contacts 22 and a plurality of negative electrode contacts f7B, and the first positive electrode contact portion and the first negative electrode contact portion 2219B are opposite to each other. And the first electrode portion, the positive electrode contact 2216B and the negative electrode contacts 22 丨 π are used for the positive electrode pins of the light-emitting elements 21

2121 and the negative pin 2122 are soldered to 苴μL, 八, and some of the positive contact 2216B are

The first positive electrode contact portion 2218B is electrically conductive, and the negative electrode contact 22 17B is electrically conductive with the first negative electrode contact portion 2219B.

The electric charge is turned on. Further, the first positive electrode contact portion 2218B M420^43 and the first negative electrode contact portion 2219B each have a through hole 22MB penetrating the light source circuit board body 221B. Referring to Figure 7, there is shown an assembly view of the drive structure of Figure 3 in a preferred embodiment. The second positive electrode contact portion 2222 and the second negative electrode contact portion 2223 on the driving circuit board 222 pass through the through hole 1 of the light source circuit board body 221A to be electrically connected to the first positive electrode contact portion 2218A and the first circuit of the circuit layer 2212A, respectively. The negative electrode contact portion 22I9A is thereby transmitted by the driving circuit board 222 to the light source circuit board body uiA, thereby driving the per-light emitting element light emission 21. The second positive electrode contact portion and the first positive electrode contact portion 2218A and the second negative electrode contact portion 2223 and the first negative electrode contact portion 2219A are soldered by soldering. (4), (4) The circuit board 222 is perpendicular to the light source circuit board body 221 eight. Moreover, the other driving circuit board 222 is combined with the light source circuit board body 221A in such a manner that the first positive electrode contact portion 2218A and its through hole 22 are electrically connected, and the first negative electrode contact portion 2219A and its perforation 2 are electrically conductive. Conduction, wherein the size of the through hole 221 is designed according to the volume of the second positive electrode contact portion 2222 and the second negative electrode contact portion. The second positive electrode contact portion 2222 and the second negative electrode contact portion 2 can be directly used by the card. The perforations 2214A are fixed to the light source circuit board body 22 in a solid manner. Please refer to the schematic diagram of a portion of the structure of the illuminating device in the second preferred embodiment. The illuminating device 3 structure 34 and the housing 33 include a plurality of illuminating elements 31, a driving structure 32, a heat dissipating/distributing medium, and a driving structure 32 for driving the plurality of illuminating elements 12 Μ output beam 'including the light source electric light source circuit board body 32 ι and The driving circuit board 322 is disposed on the light source circuit board body 321 i, and the housing 33 is configured to receive the swaying structure 32 and the heat dissipation structure 34. In the present embodiment, the structure of the light-emitting element 31 and the driving circuit board 32 is the same as that of the first preferred embodiment, and therefore will not be further described herein. Furthermore, the 'light source circuit board body 321 includes a circuit layer 3211 and an insulating board, and the circuit layer is formed on the insulating board 3212. Preferably, the insulating board 3212 is made of a material of a purchase grade, but not limit. In the present embodiment, the structure of the circuit layer 32U is also the same as that described in the preferred embodiment, and therefore will not be described here. Further, the heat dissipating structure 34 is laminated with the light source circuit board body. Preferably, the heat dissipating structure 34 is made of a metal material or a graphite material, but is not limited thereto. Further, the second preferred embodiment is different from the first preferred embodiment in that the light source circuit board body 321 in the example of the present invention further includes a plurality of holes corresponding to the dispersions ', , 13 of the light-emitting elements 31. 32 1〇, and the heat dissipation structure 34 has a plurality of contact portions 341 corresponding to the holes 321 , and is convex. When the heat dissipation structure % and the light source circuit board body 321 are stacked together, the contact portions 341 pass through the phase. The corresponding hole 3210 contacts the heat radiating portion 313 of the light-emitting element 31, thereby achieving the effect of heat dissipation. Tian...,: The above is only the superposition method of the light source circuit board body 321 and the heat dissipation structure %. For example, it can also be designed by any person familiar with the present technology according to the actual application requirements, such as the light-emitting element η The heat dissipating portion (1) is designed to have a convex shape of 13 M420643 and the contact portion of the heat dissipating structure 34 is designed to be flat, so that the hot portions 313 of the heat can pass through the corresponding holes 3216 to contact the corresponding heat dissipation. Contact portion 34j of structure 34. The heat dissipation structure 34 also has a through hole (32) corresponding to the light source circuit (4) 321 for perforating (4) for the second positive electrode contact portion 3222 and the second negative electrode contact portion of the driving circuit board 322 to pass through. In addition, in the embodiment, the driving circuit board 322 ώ &gt; μ, /, a, and the board body 321 are also combined in the same manner as in the first preferred embodiment, so that the description will not be repeated here. . According to the above description, when the driving structure of the lighting device is assembled, it is not necessary to additionally provide a connection purpose on the driving circuit board or the light emitting circuit board body. The process is simpler and lowers, and the manufacturing cost is also reduced. The above description is only a preferred embodiment of the present invention, and is not intended to limit the patent application position of the creation, so the other rides revealed by the creation of the county Equivalent changes or amendments shall be included in the scope of the patent application of this case. Where 14 M420643 [Simple description of the figure] ^ ^. The structure of the light-emitting diode as the illumination device of the Yang is indicated by the β system FIG. 1 is a partial structural view of the illuminating device shown in FIG. 1. It is a partial structural view of the illuminating device according to the first preferred embodiment. 3. The driving circuit board shown in FIG. 3 is a preferred embodiment. The structure diagram of Fig. 3 is a schematic diagram of the structure of the light source circuit board body shown in Fig. 3. The structure diagram of the light source circuit board body shown in Fig. 3 is in the second embodiment. Figure 3 shows the drive FIG. 8 is a partial structural view of the second embodiment of the present invention. [Main component symbol description] Conventional lighting device 1 LED body light source circuit Board 12 Driving circuit board 13 Conductor 14 Light emitting part 111 Positive pole 112 Negative pin 113 Circuit layer 121 Insulation layer 122 Heat sink 123 Young-positive contact 131 Second negative contact 132 15 M420643

Positive contact 1211 Negative contact 1212 First positive contact 1213 First negative contact 1214 Illumination device 2, 3 Light-emitting element 21, 3 1 Drive structure 22, 32 Housing 23, 33 Heat dissipation structure 34 Light-emitting parts 211, 311 Sleeve 212, 312 heat sink 213, 313 light source circuit board body 221, 221A, 221B, 321 drive circuit board 222, 322 contact portion 341 circuit layer 2211A '2211B, 3211 insulation layer 2212 heat sink 2213 perforation 2214A, 2214B insulation board 2215, 3212 positive pin 2121 negative pin 2122 drive circuit 2221 perforation 3214 hole 3210

Positive contact 2216A, 2216B 16 M420643 Negative contact 2217A, 2217B First positive contact 2218A, 2218B First negative contact 2219A, 2219B Second positive contact 2222, 3222 Second negative contact 2223, 3223

17

Claims (1)

M42〇643 November 18, 100, revised replacement page VI. Patent application range The light-emitting element has an electrical pin and a driving structure of the illumination device for driving at least one of the light-emitting elements of the illumination device to output a plurality of light beams, and The driving structure comprises: a light source circuit board body including a circuit layer, and the circuit layer has an electrode contact corresponding to the electrical pin and a °#°海 electrode a first electroporation of the contact is electrically penetrated through the light source circuit board body; the pole portion, and the first electrode portion has at least a λ port n-way plate, and an edge thereof is formed with a second electrode portion, and the The second electrode portion is formed in a convex shape and is formed integrally with the driving circuit board. The second electrode portion passes through the through hole of the first electrode portion and is electrically connected to the first electrode portion. 2. The driving structure of the lighting device of claim 1, wherein the first electrode portion is soldered to the first electrode portion. 3. The driving structure of the illuminating device according to the patent application scope I ^ , wherein the perforation is electrically connected to the first electrode portion, and the second electrode portion is fastened to the perforation . 4. If the second electrode portion of the first electrode portion is electrically connected to the 竽λ and the first electrode portion, the driving circuit board is perpendicular to the light source circuit. Board body. 5. The source circuit board system as described in claim 2 is a metal substrate, the driving structure of the illumination device, wherein the light and the metal substrate are formed by the circuit layer, and the 18 M420643 is November 18, 100 The daily correction replacement page is provided with the insulating layer between the circuit layer and the edge layer and the heat sink; wherein - between the heat sinks. 6. The driving structure of the lighting device according to claim 5, wherein the heat dissipating plate is composed of -Sau material or steel f. 7. The driving structure of a lighting device as claimed in the item (4) (4), wherein the lighting device comprises a connection from the s plus.散热The heat dissipation structure, and the light-emitting elements have a corresponding One of the remote contact portions is a hole corresponding to the heat dissipation portion; wherein the 呤4 ..., , , and the contact portion and the heat dissipation portion pass through The hole contacts the other of the contact portion and the heat dissipating portion. 8. If the driving structure of the lighting device described in the scope of patent application 固 Gudi 7 is applied, the i thermal structure is made of a metal material. Hai Yuewen Meng is a shell or a graphite material. 9. The driving structure of the lighting device according to claim 7, wherein the heat dissipating structure further has - another perforation for the 廯h~ hole for the second electrode portion Ψ 10, as claimed in the patent application The first light source circuit board body further includes a 丨1, as in the patent application, the insulating board is a driving structure of the illuminating device according to the item RF4, wherein the insulating board is formed on the insulating board. The driving structure of the lighting device of the above 10, wherein the material of the grade is made. 12. The light source circuit board body of the patent application scope further comprises: wherein the insulating board is a driving structure insulating board of the lighting device according to the item, and the circuit layer is formed on the heat dissipating metal plate which is insulated and processed. . 'The edge plate; 19 M420643 X % T唷 寻 发光 The light-emitting element is a light-emitting diode. The driving structure of the illuminating device, wherein the lighting device comprises: a illuminating device having an electrical pin and a illuminating portion; a light source circuit board body comprising: an electrical connection ϋ g, and The circuit layer has a pre-source circuit board body corresponding to the pole electrode contact and the - electrical and perforated teeth electrically connected to the pole electrode; In the form of a convex-convex shape, the second electrode portion and the second electrode portion are formed in the body; the second electrode portion is connected to the second electrode portion through the perforation of the electrode portion. It is connected to the 4th electrode part. The illuminating device of claim 14, wherein the second electrode portion is welded to the first electrode portion. The illumination device of claim 14, wherein the perforation is electrically connected to the electrode, and the second electrode portion is fastened to the perforation. The lighting device of claim 14, wherein the second electrode p is electrically connected to the third electrode material, and the driving circuit board (four) is directly opposite to the light source circuit board. The illuminating device of claim 14, wherein the light source circuit board 2 is a metal substrate, and the metal substrate is replaced by the circuit layer, an insulating layer, and a 20 M4 drain 43 100 The illuminating device of the above-mentioned circuit layer and the heat dissipating plate of the heat dissipating plate, wherein the illuminating device is made of aluminum or copper. The illuminating device of claim 14, further comprising a heat dissipating structure having a contact portion, wherein the illuminating element further has a card portion corresponding to the contact portion, and the light source circuit board The body further has a hole corresponding to the heat dissipating portion; wherein: the remote contact portion and any one of the heat dissipating portions are over the six holes to contact the other of the contact portion and the far heat dissipating portion. 21. If the patent application scope is 2nd 〇^ A, the illumination of the stomach escapes, wherein the heat dissipation structure is composed of the main material or graphite material. 22. If the patent application scope is 2nd „„, 斤11, ,?, Clothing set, wherein the cooling structure further: There are - corresponding to the perforations of the - other - perforations, for passing through the second electrode portion. The lighting device described in item 2Q wherein the light source circuit board 4 (four) m' and the circuit layer are formed on the insulating plate. A lighting device according to item 23, wherein the insulating plate is made of a material of the RF4 grade. The illuminating device of the above-mentioned item 14 wherein the light source circuit board includes a % edge plate and the circuit layer is formed on the insulating plate; wherein the insulating plate is a heat-dissipating metal subjected to insulation treatment The application of the illuminating device described in Item 14 of the patent stipulations, including the use of 21 M420643 for accommodating the light source circuit board body and the driving circuit board. The lighting as described in the scope of the patent application The device, wherein the light-emitting element is a light-emitting diode, 28', as described in claim 14, and the lighting device is a household lighting, '_set', which is applied to indoor lighting , a lamp or a bedside lamp. 22 M420643 November 18, 2010 Correction Replacement Page Cx)_ M42Q643 月丨7曰Scharge \ IV. Designated representative map: (1) The representative representative of the case is: (7). ' (2) The symbol of the representative figure is simply described: 22 drive structure 222 drive circuit board 2212 insulation layer 2214A wear ceremony 2221 drive circuit 2223 second negative electrode contact portion 221A light source circuit board body 2211A circuit layer 2213 heat sink 2218A first Positive electrode contact portion 2222 second positive electrode contact portion 2216A positive electrode contact 2217A negative electrode contact 2219A first negative electrode contact portion