Forward-installed constant-voltage double-color COB light source

Abstract

The utility model relates to the technical field of COB light sources, and particularly discloses a normally-installed constant-voltage double-color COB light source, which comprises a COB substrate, a BT circuit layer, a constant-current IC chip, a warm-light power supply bonding pad, a cold-light power supply bonding pad and a plurality of light-emitting chips, the BT circuit layer, the warm-light power supply bonding pad, the cold-light power supply bonding pad and the light-emitting chips are all arranged on the COB substrate, and the BT circuit layer, the constant-current IC chip, the warm-light power supply bonding pad, the cold-light power supply bonding pad and the light-emitting chips are arranged on the COB substrate. The constant current IC chip is welded on the BT circuit layer, and the BT circuit layer is electrically connected with the warm light power supply bonding pad, the cold light power supply bonding pad and the light-emitting chip. According to the utility model, the constant-current IC chip is welded on the BT circuit layer, so that the constant-current IC chip can be installed without special slotting, a constant-voltage device and a light-emitting chip can be reasonably arranged, the wiring space is fully utilized, the circuit wiring is more convenient, the production speed is improved, the production cost is reduced, and the production efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of COB light sources, in particular to a positive-mounted constant-voltage two-color COB light source. Background Art

[0002] COB (Chip on Board) is a bare chip mounting technology. Semiconductor chips are mounted on a printed circuit board (PCB). Electrical connections between the chip and the substrate are achieved using wire stitching and then covered with resin to ensure reliability. COB typically includes a substrate with a light-emitting area, cold light positive and negative solder pads, warm light positive and negative solder pads, and conductive circuitry. COB is widely used for its long lifespan, pollution-free operation, and high light efficiency.

[0003] After searching, the Chinese utility model patent with patent application number 202420352678.5 discloses a constant voltage COB light source device. By respectively setting a light source groove and a mounting groove recessed in the surface on the substrate assembly, the light source assembly is located in the light source groove, and the constant current assembly is located in the mounting groove, and the dam ring is arranged in the light source groove, thereby improving the brightness of the COB light source, achieving uniform light output, and optimizing the light output effect.

[0004] For example, the Chinese utility model patent application number 202222962968.5 discloses a constant-voltage two-color COB light source. By setting a diode pad to weld a diode with constant voltage input and constant current output, the connected power supply voltage is stably adjusted, the internal chip is protected from the influence of high-voltage surges, and the constant voltage function is achieved.

[0005] However, the existing COB light sources either require a constant current device mounting slot to install the constant current device, and the constant current device needs to be electrically connected to the light source assembly by soldering gold wires, or the constant voltage device is sandwiched between the wicks and occupies a certain space, which brings certain difficulties to the uniformity of the wick arrangement, is more troublesome to produce, increases production costs, and leads to low production efficiency. Utility Model Content

[0006] The technical problem to be solved by the present invention is that, in response to the above-mentioned defects of the prior art, a positive-mounted constant-voltage two-color COB light source is provided. By soldering the constant-current IC chip on the BT circuit layer, there is no need to specially cut a groove to install the constant-current IC chip. The constant-voltage device and the light-emitting chip can be reasonably arranged, the wiring space is fully utilized, the circuit wiring is more convenient, thereby improving the production speed, reducing the production cost, and achieving higher production efficiency.

[0007] In order to solve the above technical problems, the technical solution of the utility model is:

[0008] A forward-mounted constant-voltage two-color COB light source includes a COB substrate, a BT circuit layer, a constant-current IC chip, a warm light power pad, a cold light power pad, and a plurality of light-emitting chips. The BT circuit layer, the warm light power pad, the cold light power pad, and the light-emitting chips are all arranged on the COB substrate. The constant-current IC chip is soldered to the BT circuit layer. The BT circuit layer is electrically connected to the warm light power pad, the cold light power pad, and the light-emitting chips, respectively.

[0009] Preferably, the BT circuit layer includes a plurality of warm light BT circuit layers and cold light BT circuit layers, and the warm light power pad and the cold light power pad are electrically connected to the warm light BT circuit layer and the cold light BT circuit layer respectively.

[0010] Preferably, the light emitting chip includes a plurality of warm light chip groups and a cold light chip group, and the warm light chip group and the cold light chip group are each composed of a plurality of light emitting lamp beads connected in series.

[0011] Preferably, the warm light chipset and the cold light chipset are connected to the warm light BT circuit layer and the cold light BT circuit layer respectively.

[0012] Preferably, a circular dam is provided on the COB substrate, the light-emitting chips are evenly distributed in the circular dam, and the BT circuit layer and the constant current IC chip are both arranged around the circular dam.

[0013] Preferably, the warm light power pad includes a warm light positive power pad and a warm light negative power pad, and the cold light power pad includes a cold light positive power pad and a cold light negative power pad.

[0014] By adopting the above technical solution, the utility model provides a formal constant-voltage two-color COB light source, which has the following beneficial effects: the BT circuit layer, warm light power pad, cold light power pad and light-emitting chip in the formal constant-voltage two-color COB light source are all arranged on the COB substrate, and the constant current IC chip is soldered on the BT circuit layer. The BT circuit layer is electrically connected to the warm light power pad, the cold light power pad and the light-emitting chip respectively. By soldering the constant current IC chip on the BT circuit layer, there is no need to specially cut grooves to install the constant current IC chip. The constant voltage device and the light-emitting chip can be reasonably arranged, so that the light-emitting chips can be evenly arranged, the wiring space is fully utilized, the circuit wiring is more convenient, thereby improving the production speed, reducing the production cost, and having higher production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] In the figure, 1-COB substrate, 2-warm light BT circuit layer, 3-cold light BT circuit layer, 4-constant current IC chip, 5-warm light positive power pad, 6-warm light negative power pad, 7-warm light chipset, 8-cold light chipset, 9-circular dam, 10-cold light positive power pad, 11-cold light negative power pad. DETAILED DESCRIPTION

[0017] The following further describes specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the descriptions of these embodiments are intended to aid understanding of the present invention and do not constitute limitations on the present invention. Furthermore, the technical features involved in the various embodiments of the present invention described below may be combined with one another as long as they do not conflict with one another.

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0020] like Figure 1 As shown, the upright constant-voltage dual-color COB light source includes a COB substrate 1, a BT circuit layer, a constant-current IC chip 4, a warm light power pad, a cold light power pad, and several light-emitting chips. The BT circuit layer, the warm light power pad, the cold light power pad, and the light-emitting chips are all disposed on the COB substrate 1. The constant-current IC chip 4 is soldered to the BT circuit layer, and the BT circuit layer is electrically connected to the warm light power pad, the cold light power pad, and the light-emitting chips. It is understood that the COB substrate 1 can be a general-purpose aluminum substrate, etc., and the constant-current IC chip 4 can be a constant-current diode or a general-purpose MOS transistor, etc.

[0021] Specifically, the BT circuit layer includes several warm light BT circuit layers 2 and cold light BT circuit layers 3, and the warm light power pad and the cold light power pad are electrically connected to the warm light BT circuit layer 2 and the cold light BT circuit layer 3 respectively; the light-emitting chip includes several warm light chip groups 7 and cold light chip groups 8, and the warm light chip group 7 and the cold light chip group 8 are both composed of several light-emitting lamp beads connected in series in sequence; the warm light chip group 7 and the cold light chip group 8 are connected to the warm light BT circuit layer 2 and the cold light BT circuit layer 3 respectively; a circular dam 9 is provided on the COB substrate 1, and the light-emitting chips are evenly distributed in the circular dam 9, and the BT circuit layer and the constant current IC chip 4 are both arranged around the circular dam 9; the warm light power pad includes a warm light positive power pad 5 and a warm light negative power pad 6, and the cold light power pad includes a cold light positive power pad 10 and a cold light negative power pad 11. It can be understood that the constant current IC chip located on a certain BT circuit layer can be connected to another BT circuit layer through a gold wire.

[0022] It can be understood that the present invention has a reasonable design and a unique structure. By soldering the constant current IC chip 4 on the BT circuit layer, there is no need to specially groove to install the constant current IC chip 4. The constant voltage device and the light-emitting chip can be reasonably arranged, so that the light-emitting chips can be evenly arranged, the wiring space can be fully utilized, and the line wiring is more convenient, thereby improving the production speed, reducing the production cost, and having higher production efficiency.

[0023] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A vertically mounted constant-voltage, dual-color COB light source, comprising a COB substrate, a BT circuit layer, a constant-current IC chip, a warm light power supply pad, a cold light power supply pad, and a plurality of light-emitting chips, wherein the BT circuit layer, the warm light power supply pad, the cold light power supply pad, and the light-emitting chips are all disposed on the COB substrate, characterized in that: The constant current IC chip is soldered on the BT circuit layer, and the BT circuit layer is electrically connected to the warm light power supply pad, the cold light power supply pad and the light-emitting chip respectively.

2. The upright constant voltage dual-color COB light source according to claim 1, characterized in that: The BT circuit layer includes a plurality of warm light BT circuit layers and a cold light BT circuit layer, and the warm light power pad and the cold light power pad are electrically connected to the warm light BT circuit layer and the cold light BT circuit layer respectively.

3. The upright constant voltage dual-color COB light source according to claim 2, characterized in that: The light emitting chip comprises a plurality of warm light chip groups and a cold light chip group, and the warm light chip group and the cold light chip group are both composed of a plurality of light emitting lamp beads connected in series.

4. The upright constant voltage dual-color COB light source according to claim 3, characterized in that: The warm light chipset and the cold light chipset are connected to the warm light BT circuit layer and the cold light BT circuit layer respectively.

5. The upright constant voltage dual-color COB light source according to claim 1, characterized in that: A circular dam is provided on the COB substrate, the light-emitting chips are evenly distributed in the circular dam, and the BT circuit layer and the constant current IC chip are both arranged around the circular dam.

6. The upright constant voltage dual-color COB light source according to claim 1, characterized in that: The warm light power supply pad includes a warm light positive power supply pad and a warm light negative power supply pad, and the cold light power supply pad includes a cold light positive power supply pad and a cold light negative power supply pad.

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