Special-shaped light source plate

Abstract

The utility model discloses a special-shaped light source plate. The special-shaped light source plate comprises a base plate of a triangular structure and a lamp bead array which is arranged on the base plate in a triangular mode. The lamp bead array is arranged in at least three rows of lamp beads; and each row of lamp beads of the lamp bead array are connected in series with a resistor. According to the utility model, the current of each row of lamp beads can be independently adjusted, and the normal work of each row of lamp beads is ensured; therefore, the density of the lamp beads can be improved on the basis of ensuring the normal work of each row of lamp beads, and the light-emitting effect is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lamps and lanterns, in particular to a special-shaped light source plate. BACKGROUND

[0002] The existing light source plate is generally in a circular structure, but part of lamps (such as wall lamps) need to use a special-shaped light source plate (such as a light source plate in a triangular structure). Due to the limited space, if the arrangement density of the lamp beads is large, the lamp beads cannot be powered by using the conventional constant voltage scheme (i.e., the positive poles of each lamp string are connected to the same power supply), thereby causing the arrangement density of the lamp beads of the special-shaped light source plate to be unable to be increased, and affecting the light emitting effect of the special-shaped light source plate.

[0003] In view of the above problems, it is necessary to study a special-shaped light source plate with good light emitting effect. SUMMARY

[0004] The utility model discloses a special-shaped light source plate with good light emitting effect.

[0005] In order to achieve the above purpose, the solution of the utility model is as follows:

[0006] A special-shaped light source plate includes a substrate in a triangular structure and a lamp bead array arranged in a triangular shape on the substrate; the lamp bead array is arranged in at least N rows of lamp beads, and N is an integer greater than or equal to 3; the first row of lamp beads includes a first lamp group, the first lamp group includes three first lamp beads connected in series, and the first lamp group is connected in series with a first resistor; the second row of lamp beads includes a second lamp group, the second lamp group includes three second lamp beads connected in series, and the second lamp group is connected in series with a second resistor; the i-th row of lamp beads includes j i-th lamp groups, each i-th lamp group includes three i-th lamp beads connected in series, each i-th lamp group is connected in parallel, and each i-th lamp group is connected in series with an i-th resistor; i is an integer greater than or equal to 3 and less than or equal to 5, and j = i-1; when N is greater than or equal to 6, the K-th row of lamp beads includes L i-th lamp groups, each K-th lamp group includes three K-th lamp beads connected in series, each K-th lamp group is connected in parallel, and each K-th lamp group is connected in series with a K-th resistor; K is an integer greater than or equal to 6, and L = K-2.

[0007] The special-shaped light source plate further comprises a power port, a grounding port, a dimming port and a MOS tube arranged on the substrate; the positive pole of the first lamp group is connected to the first end of the first resistor, the positive pole of the second lamp group is connected to the first end of the second resistor, the positive pole of each ith lamp group is connected to the first end of the ith resistor, the positive pole of each Kth lamp group is connected to the first end of the Kth resistor, the second end of the first resistor, the second end of the second resistor, the second end of the ith resistor and the second end of the Kth resistor are connected to the power port, the drain of the MOS tube is connected to the negative pole of the first lamp group, the negative pole of the second lamp group, the negative pole of each ith lamp group and the negative pole of each Kth lamp group, the gate of the MOS tube is connected to the dimming port, and the source of the MOS tube is connected to the grounding port.

[0008] The lamp bead array, the first resistor, the second resistor, the ith resistor, the Kth resistor and the MOS tube are arranged on the front surface of the substrate, and the power port, the grounding port and the dimming port are arranged on the back surface of the substrate.

[0009] N is equal to 7.

[0010] After the above scheme is adopted, each row of lamp beads of the lamp bead array is connected in series with a resistor, and the current of the row of lamp beads can be independently adjusted through the resistor, so that the normal work of each row of lamp beads is ensured; thus, the lamp bead density can be improved on the basis of ensuring the normal work of each row of lamp beads, and the light emitting effect is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is a front view of the utility model.

[0012] Fig. 2 It is a back view of the utility model.

[0013] Fig. 3 It is a circuit connection schematic view of the utility model.

[0014] Label explanation:

[0015] The substrate 1,

[0016] The lamp bead array 2,

[0017] The first lamp group 21, the first lamp bead D1, the first resistor R1,

[0018] The second lamp group 22, the second lamp bead D2, the second resistor R2,

[0019] The third lamp group 23, the third lamp bead D3, the third resistor R3,

[0020] The fourth lamp group 24, the fourth lamp bead D4, the fourth resistor R4,

[0021] The fifth lamp group 25, the fifth lamp bead D5, the fifth resistor R5,

[0022] The sixth lamp group 26, the sixth lamp bead D6, the sixth resistor R6,

[0023] The seventh lamp group 27, the sixth lamp bead D7, the seventh resistor R7,

[0024] MOS tube Q1,

[0025] Power port VCC, ground port GND, dimming port PWM. DETAILED DESCRIPTION

[0026] The utility model discloses a special-shaped light source board, which includes a base 1 with a triangular structure and a lamp bead array 2 arranged in a triangular shape on the base 1; the lamp bead array 2 is arranged in at least N rows of lamp beads, where N is an integer greater than or equal to 3; the first row of lamp beads includes a first lamp group 21, the first lamp group 21 includes three first lamp beads D1 connected in series, and the first lamp group 21 is connected in series with a first resistor R1; the second row of lamp beads includes a second lamp group 22, the second lamp group 22 includes three second lamp beads D2 connected in series, and the second lamp group 22 is connected in series. A second resistor R2; the i-th row of lamp beads includes j-th i-th lamp groups, the i-th lamp group includes three i-th lamp beads in series, the i-th lamp groups are arranged in parallel, and the i-th lamp groups are commonly connected in series with an i-th resistor; i is an integer greater than or equal to 3 and less than or equal to 5, j=i-1; when N is greater than or equal to 6, the K-th row of lamp beads includes L-th i-th lamp groups, the K-th lamp group includes three K-th lamp beads in series, the K-th lamp groups are arranged in parallel, and the K-th lamp groups are commonly connected in series with a K-th resistor; K is an integer greater than or equal to 6, L=K-2.

[0027] As can be seen from the above, each row of lamp beads in the lamp bead array 2 of the present invention is connected in series with a resistor and the current of the row of lamp beads can be independently adjusted through the resistor to ensure the normal operation of each row of lamp beads; in this way, the present invention can increase the density of lamp beads and ensure the lighting effect while ensuring the normal operation of each row of lamp beads.

[0028] The special-shaped light source plate of the utility model further can include the power port VCC, the grounding port GND, the light adjusting port PWM and the MOS tube Q1 which are arranged on the base 1; the anode of the first lamp group 21 is connected with the first end of the first resistor R1, the anode of the second lamp group 22 is connected with the first end of the second resistor R2, the anode of each i lamp group is connected with the first end of the i resistor, the anode of each K lamp group is connected with the first end of the K resistor, the second end of the first resistor R1, the second end of the second resistor R2, the second end of the i resistor and the second end of the K resistor are connected with the power port VCC, the drain of the MOS tube Q1 is connected with the negative pole of the first lamp group 21, the negative pole of the second lamp group 22, the negative pole of each i lamp group and the negative pole of each K lamp group, the gate of the MOS tube Q1 is connected with the light adjusting port PWM, the source of the MOS tube Q1 is connected with the grounding port GND; the utility model is thus arranged, so that the utility model can control the on-off interval of the MOS tube Q1 by inputting PWM light adjustment to the light adjusting port PWM, and then control the brightness of the whole lamp bead array 2; wherein the lamp bead array 2, the first resistor R1, the second resistor R2, the i resistor, the K resistor and the MOS tube Q1 are arranged on the front face of the base 1, the power port VCC, the grounding port GND and the light adjusting port PWM are arranged on the back face of the base 1 so as to avoid the wiring of the power port VCC, the grounding port GND and the light adjusting port PWM from affecting the light emitting effect of the lamp bead array 2.

[0029] In order to further explain the technical scheme of the utility model, the following will take the case of N being equal to 7 as an example for illustration.

[0030] Cooperation Figs. 1 to 3As shown, the lamp bead array 2 is arranged in 7 rows of lamp beads; the first row of lamp beads includes a first lamp group 21, the first lamp group 21 includes three first lamp beads D1 connected in series, the first lamp group 21 is connected in series with a first resistor R1, the positive electrode of the first lamp group 21 is connected to the first end of the first resistor R1, the first end of the first resistor R1 is connected to the power port VCC, and the negative electrode of the first lamp group 21 is connected to the drain of the MOS tube Q1; the second row of lamp beads includes a second lamp group 22, the second lamp group 22 includes three second lamp beads D2 connected in series, the second lamp group 22 is connected in series with a second resistor R2, the positive electrode of the second lamp group 22 is connected to the first end of the second resistor R2, the second end of the second resistor R2 is connected to the power port VCC, and the negative electrode of the second lamp group 22 is connected to the drain of the MOS tube Q1; the third row of lamp beads includes two third lamp groups 23, the third lamp group 23 includes three third lamp beads D3 connected in series, each third lamp group 23 is arranged in parallel and each third lamp group 23 is commonly connected in series with a third resistor R3, the positive electrode of each third lamp group 23 is connected to the first end of the third resistor R3, the second end of the third resistor R3 is connected to the power port VCC, and the negative electrode of each third lamp group 23 is connected to the drain of the MOS tube Q1; the fourth row of lamp beads includes three fourth lamp groups 24, the fourth lamp group 24 includes three fourth lamp beads D4 connected in series, each fourth lamp group 24 is arranged in parallel and each fourth lamp group 24 is commonly connected in series with a fourth resistor R4, the positive electrode of each fourth lamp group 24 is connected to the first end of the fourth resistor R4, the second end of the fourth resistor R4 is connected to the power port VCC, and the negative electrode of each fourth lamp group 24 is connected to the drain of the MOS tube Q1; the fifth row of lamp beads includes four fifth lamp groups 25, the fifth lamp group 25 includes three fifth lamp beads D5 connected in series, each fifth lamp group 25 is arranged in parallel and each fifth lamp group 25 is commonly connected in series with a fifth resistor R5, the positive electrode of each fifth lamp group 25 is connected to the first end of the fifth resistor R5, the second end of the fifth resistor R5 is connected to the power port VCC, and the negative electrode of each fifth lamp group 25 is connected to the drain of the MOS tube Q1; the sixth row of lamp beads includes four sixth lamp groups 26, the sixth lamp group 26 includes three sixth lamp beads D6 connected in series, each sixth lamp group 26 is arranged in parallel and each sixth lamp group 26 is commonly connected in series with a sixth resistor R6, the positive electrode of each sixth lamp group 26 is connected to the first end of the sixth resistor R6, the second end of the sixth resistor R6 is connected to the power port VCC, and the negative electrode of each sixth lamp group 26 is connected to the drain of the MOS tube Q1; the seventh row of lamp beads includes five seventh lamp groups 27, the seventh lamp group 27 includes three seventh lamp beads D7 connected in series, each seventh lamp group 27 is arranged in parallel and each seventh lamp group 27 is commonly connected in series with a seventh resistor R7, the positive electrode of each seventh lamp group 27 is connected to the first end of the seventh resistor R7, the second end of the seventh resistor R7 is connected to the power port VCC, and the negative electrode of each seventh lamp group 27 is connected to the drain of the MOS tube Q1; the gate of the MOS tube Q1 is connected to the dimming port PWM, and the source of the MOS tube Q1 is connected to the ground port GND.

[0031] The above embodiments and drawings are not limited to the product shape and style of the present application, and any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the scope of the present application.

Claims

1. A special-shaped light source panel, characterized in that: It includes a base plate with a triangular structure and a lamp bead array arranged in a triangular shape on the base plate; The lamp bead array is arranged in at least N rows of lamp beads, where N is an integer greater than or equal to 3; The first row of lamp beads includes a first lamp group, the first lamp group includes three first lamp beads connected in series, and the first lamp group is connected in series with a first resistor; The second row of lamp beads includes a second lamp group, the second lamp group includes three second lamp beads connected in series, and the second lamp group is connected in series with a second resistor; The i-th row of lamp beads includes j i-th lamp groups, the i-th lamp group includes three i-th lamp beads connected in series, each i-th lamp group is arranged in parallel and each i-th lamp group is commonly connected in series with an i-th resistor; i is an integer greater than or equal to 3 and less than or equal to 5, and j=i-1; When N is greater than or equal to 6, the Kth row of lamp beads includes L i-th lamp groups, the Kth lamp group includes three Kth lamp beads connected in series, each Kth lamp group is arranged in parallel and each Kth lamp group is connected in series with a Kth resistor; K is an integer greater than or equal to 6, and L=K-2.

2. The special-shaped light source panel according to claim 1, wherein: It also includes a power port, a ground port, a dimming port and a MOS tube arranged on the substrate; The positive electrode of the first lamp group is connected to the first end of the first resistor, the positive electrode of the second lamp group is connected to the first end of the second resistor, the positive electrode of each i-th lamp group is connected to the first end of the i-th resistor, the positive electrode of each K-th lamp group is connected to the first end of the K-th resistor, the second end of the first resistor, the second end of the second resistor, the second end of the i-th resistor and the second end of the K-th resistor are connected to the power port, the drain of the MOS tube is connected to the negative electrode of the first lamp group, the negative electrode of the second lamp group, the negative electrode of each i-th lamp group and the negative electrode of each K-th lamp group, the gate of the MOS tube is connected to the dimming port, and the source of the MOS tube is connected to the ground port.

3. The special-shaped light source panel according to claim 2, wherein: The lamp bead array, the first resistor, the second resistor, the i-th resistor, the K-th resistor and the MOS tube are arranged on the front side of the substrate, and the power port, the ground port and the dimming port are arranged on the back side of the substrate.

4. The special-shaped light source panel according to claim 1, wherein: N is equal to 7.

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