COB dot matrix lamp
By separating the positive and negative circuits of the COB lamp and designing inner and outer cutting areas, the problem that COB lamps can only be cut in a straight line is solved, and irregular shapes and three-dimensional light emission effects are achieved.
Patent Information
- Application Number
- CN202423203352.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-25
AI Technical Summary
The positive and negative circuits of existing COB lamps are arranged on the bottom copper foil, which means they can only be cut into straight lines and cannot be cut into irregular shapes, making them inflexible in use.
The positive electrode circuit is arranged on the copper foil on the front side of the LED positive electrode circuit, and the negative electrode circuit is arranged on the copper foil on the back side of the LED negative electrode circuit. The negative electrode pad and the negative electrode circuit are connected through the through hole. The inner and outer square areas are designed to allow arbitrary cutting. The positive electrode circuit is designed as an independent circuit.
It enables irregular cutting of COB dot matrix lights, meeting various irregular or artistic lighting needs, ensuring that the lines are not cut, and supporting various special shapes of cutting and three-dimensional lighting effects.
Smart Images
Figure CN223595848U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a lighting device, especially a COB dot matrix lamp. BACKGROUND
[0002] COB lamp is a kind of lighting product using COB (Chip on Board) technology, that is, a plurality of LED chips are directly packaged on the same substrate (circuit board), forming a whole light-emitting surface.
[0003] The existing COB lamp arranges positive and negative lines on the bottom layer circuit copper foil, so that the cutting of COB dot matrix lamp is limited, can only be cut into straight line type, cannot be cut into irregular shape, leading to inflexible use. SUMMARY
[0004] In order to solve the problems in the prior art, the utility model provides a COB dot matrix lamp capable of being cut at will.
[0005] The utility model provides a COB dot matrix lamp, including the light board and dot matrix distribution's point light source, the point light source includes two parallel flip LED chips, the light board includes from top to bottom sequentially laminated upper layer white light reflection cover film, LED positive line circuit front copper foil, intermediate insulating PI film, LED negative line circuit back copper foil and lower layer white insulating cover film, the LED positive line circuit front copper foil is arranged with positive line, the LED negative line circuit back copper foil is arranged with negative line, the front surface of light board is equipped with positive pad and negative pad, the positive pad is connected with the positive line on the LED positive line circuit front copper foil, the negative pad is equipped with through hole, the negative pad is connected with the negative line on the LED negative line circuit back copper foil through the through hole.
[0006] As a further improvement of the utility model, the light board is equipped with outer cutting square and inner cutting square, the inner cutting square is located in the outer cutting square, the point light source, positive pad and negative pad are located in the inner cutting square.
[0007] As a further improvement of the utility model, the endpoints of the four edges of the inner cutting square intersect with the midpoints of the four edges of the outer cutting square.
[0008] As a further improvement of the utility model, the area between the outer cutting square and the inner cutting square is an area that can be cut at will.
[0009] As a further improvement of the utility model, each point light source has an outer cutting square and an inner cutting square.
[0010] As a further improvement of the present application, the positive and negative pads are arranged in pairs, and there are four pairs of positive and negative pads distributed at intervals of 90 degrees along the circumference of the point light source.
[0011] As a further improvement of the present application, the LED chip is covered with arc-shaped COB fluorescent powder.
[0012] As a further improvement of the present application, the positive and negative pads are located outside the arc-shaped COB fluorescent powder.
[0013] As a further improvement of the present application, the lamp panel is provided with a patch current-limiting resistor.
[0014] As a further improvement of the present application, the positive circuit is not arranged on the copper foil on the back of the LED negative circuit.
[0015] The present application has the following beneficial effects: through the above scheme, the positive circuit is arranged on the copper foil on the front of the LED positive circuit, the negative circuit is arranged on the copper foil on the back of the LED negative circuit, the positive circuit and the negative circuit are separated, the negative pad is connected with the negative circuit on the copper foil on the back of the LED negative circuit through the through hole, in the case of random cutting, the circuit can still be kept from being cut off, the COB dot matrix lamp can be cut into an irregular shape to meet the use of various irregular illumination or artistic illumination. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other embodiments can also be obtained by those skilled in the art without creative labor.
[0017] Figure 1 is a cross-sectional view of the COB dot matrix lamp of the present application.
[0018] Figure 2 is a front view of the COB dot matrix lamp of the present application.
[0019] Figure 3 is a whole view of the COB dot matrix lamp of the present application.
[0020] Figure 4 is a cutting view of the COB dot matrix lamp of the present application.
[0021] Figure 5 is a cutting view of the COB dot matrix lamp of the present application.
[0022] Figure 6It is the cutting schematic view of the COB dot matrix lamp.
[0023] Figure 7 It is the cutting schematic view of the COB dot matrix lamp.
[0024] Figure 8 It is the cutting schematic view of the COB dot matrix lamp. DETAILED DESCRIPTION
[0025] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.
[0026] In the description of the present application, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.
[0027] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between the two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood through specific circumstances.
[0028] The present application will be further described below in conjunction with the description and specific embodiments of the drawings.
[0029] As Figures 1 to 8 shown, a COB dot matrix lamp, comprising a lamp panel and a dot matrix distributed point light source, the point light source comprises two parallel inverted LED chips 2, two parallel inverted LED chips 2 can ensure that one LED chip does not light up, and the other can ensure that the overall lighting effect is not affected.
[0030] The lamp panel comprises, from top to bottom, an upper layer of white light-reflecting cover film 3, an LED positive electrode line front copper foil 4, an intermediate insulating PI film 5, an LED negative electrode line back copper foil 6, and a lower layer of white insulating cover film 7.
[0031] The upper layer of white light-reflecting cover film 3 can improve light efficiency.
[0032] The LED positive electrode line front copper foil 4 is provided with positive electrode lines, the LED negative electrode line back copper foil 6 is provided with negative electrode lines, the front surface of the lamp panel is provided with positive electrode pads 11 and negative electrode pads 12, the positive electrode pads 11 are connected with the positive electrode lines on the LED positive electrode line front copper foil 4, the negative electrode pads 12 are provided with through holes 13, and the negative electrode pads 12 are connected with the negative electrode lines on the LED negative electrode line back copper foil 6 through the through holes 13.
[0033] The lamp panel is provided with an outer cutting square 9 and an inner cutting square 10, the inner cutting square 10 is located within the outer cutting square 9, and the point light source, the positive electrode pads 11 and the negative electrode pads 12 are located within the inner cutting square 10.
[0034] The endpoints of the four sides of the inner cutting square 10 intersect with the midpoints of the four sides of the outer cutting square 9.
[0035] The area between the outer cutting square 9 and the inner cutting square 10 is an area that can be cut arbitrarily.
[0036] Each point light source has one outer cutting square 9 and one inner cutting square 10.
[0037] The positive electrode pads 11 and the negative electrode pads 12 are arranged in pairs, there are four pairs of the positive electrode pads 11 and the negative electrode pads 12, and the four pairs of the positive electrode pads 11 and the negative electrode pads 12 are distributed at an interval of 90 degrees around the circumference of the point light source, the positive electrode pads 11 and the negative electrode pads 12 are arranged at multiple angles, and the positive electrode pads 11 and the negative electrode pads 12 can be turned on by welding any one pair in any direction to adapt to different wire outlet requirements, for example, the wire outlet direction can be up, down, left or right.
[0038] The LED chip is covered with an arc-shaped COB fluorescent powder 1.
[0039] The positive electrode pads 11 and the negative electrode pads 12 are located outside the arc-shaped COB fluorescent powder 1.
[0040] The lamp panel is provided with a patch current-limiting resistor 8.
[0041] The LED negative electrode line back copper foil 6 is not provided with positive electrode lines.
[0042] The utility model provides a kind of COB dot matrix lamp, solve the problem that COB light bar can only linear cutting, linear light emitting, cannot be shaped, or three-dimensional light emitting, COB dot matrix lamp adopts double-sided panel special design, the back copper foil 6 of bottom layer's LED negative line route goes negative pole and does not go positive pole, so no matter how cutting all will not cut off circuit, only negative pad 12 on front surface is passed through through hole 13 LED negative line route back copper foil 6 is conducted to front surface, the rest circuit is designed as positive line route, so it is cut along the area between the outer cutting square 9 and the inner cutting square 10, all will not cut dot matrix light source line, even can cut shape at will, and, in the case where guaranteeing arc COB fluorescent powder 1 is complete, can be cut into irregular shape, to satisfy various irregular illumination or artistic lighting use.To ensure that COB dot matrix light source can realize the cutting of various special shapes, for example, rectangle / T type / + type / one type, it can also be folded to form a cube shape by the shape shown in Figure 7
[0043] The above content is further detailed description of the utility model in combination with specific preferred embodiments, and cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary skilled person in the art to which the utility model belongs, on the premise of not departing from the concept of the utility model, a number of simple deductions or substitutions can also be made, which should be regarded as belonging to the protection scope of the utility model.
Claims
1. A COB dot matrix light, characterized in that: The device includes a light panel and a dot matrix distribution of point light sources. Each point light source includes two parallel flip-chip LEDs. The light panel comprises, from top to bottom, an upper white reflective covering film, a copper foil on the front side of the LED positive electrode circuit, a middle insulating PI film, a copper foil on the back side of the LED negative electrode circuit, and a lower white insulating covering film. A positive electrode circuit is arranged on the copper foil on the front side of the LED positive electrode circuit, and a negative electrode circuit is arranged on the copper foil on the back side of the LED negative electrode circuit. The front side of the light panel has positive and negative electrode pads. The positive electrode pads are connected to the positive electrode circuits on the copper foil on the front side of the LED positive electrode circuit, and the negative electrode pads have through holes. The negative electrode pads are connected to the negative electrode circuits on the copper foil on the back side of the LED negative electrode circuit through the through holes.
2. The COB dot matrix light according to claim 1, characterized in that: The lamp board has an outer cut square and an inner cut square, the inner cut square is located inside the outer cut square, and the point light source, positive electrode pad and negative electrode pad are located inside the inner cut square.
3. The COB dot matrix light according to claim 2, characterized in that: The endpoints of the four sides of the inner cut square intersect the midpoints of the four sides of the outer cut square.
4. The COB matrix light according to claim 3, characterized in that: The area between the outer cut square and the inner cut square is an area that can be cut arbitrarily.
5. The COB dot matrix light according to claim 2, characterized in that: Each point light source has an outer clipping square and an inner clipping square.
6. The COB dot matrix light according to claim 1, characterized in that: The positive and negative pads are arranged in pairs, and there are four pairs of positive and negative pads distributed at 90-degree intervals around the point light source.
7. The COB dot matrix light according to claim 1, characterized in that: The LED chip is covered with an arc-shaped COB phosphor.
8. The COB dot matrix light according to claim 7, characterized in that: The positive and negative electrode pads are located outside the arc-shaped COB phosphor.
9. The COB dot matrix light according to claim 1, characterized in that: The lamp board is equipped with a surface-mount current-limiting resistor.
10. The COB dot matrix light according to claim 1, characterized in that: No positive electrode line is arranged on the copper foil on the back of the LED negative electrode line.