Constant-voltage front-mounted double-color COB (Chip On Board)

Abstract

The utility model relates to the technical field of COB light sources, and particularly discloses a constant-voltage front-mounted double-color COB, which comprises a COB substrate, a light source mounting groove and a plurality of constant-voltage IC chip mounting grooves communicated with the light source mounting groove are arranged on the COB substrate, a plurality of warm light chips and cold light chips are arranged on the light source mounting groove, and the constant-voltage IC chip mounting grooves are communicated with the light source mounting groove. A constant-voltage IC chip is arranged on the constant-voltage IC chip mounting groove, a light-shielding silica gel layer is coated above the constant-voltage IC chip mounting groove, a plurality of power supply bonding pads are arranged at the diagonal positions of the COB substrate, and the constant-voltage IC chip is electrically connected with the warm light chip, the cold light chip and the power supply bonding pads respectively. The constant-voltage IC chip is installed by arranging the constant-voltage IC chip installation groove, a lampwick and a constant-voltage device can be reasonably arranged, the space is fully utilized, uniform light emitting is achieved, the light shielding effect is good, the light emitting efficiency is high, and the application range is wide.

Description

Technical Field

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

[0002] COB (i.e. Chip on Board), chip on board packaging, is one of the bare chip mounting technologies. The semiconductor chip is mounted on the printed circuit board. The electrical connection between the chip and the substrate is achieved by wire stitching and covered with resin to ensure reliability. COB usually includes a substrate, on which are provided a light-emitting area, a cold light positive electrode pad, a cold light negative electrode pad, a warm light positive electrode pad, a warm light negative electrode pad and a conductive circuit; COB is widely used due to its long life, pollution-free and high light efficiency. The Chinese utility model patent with patent application number 202222962968.5 discloses a constant voltage two-color COB light source, which is used to weld a diode with constant voltage input and constant current output by setting a diode pad, thereby stabilizing and adjusting the connected power supply voltage, protecting the internal chip from the influence of high voltage surges, and realizing the constant voltage function. However, the constant voltage devices in existing COB light sources are mixed and arranged between the wicks and occupy a certain space, which brings certain difficulties to the uniformity of the wick arrangement, resulting in uneven light output; in addition, the light-shielding ability of the surface of the constant voltage device is limited, and the light-shielding effect is poor, resulting in low light output efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is that, in view of the above-mentioned defects of the prior art, a constant voltage upright two-color COB is provided to solve the technical problems of uneven light emission, difficult wick arrangement, poor light shielding effect of constant voltage devices and the like existing in the existing COB light sources. By setting a constant voltage IC chip installation groove to install the constant voltage IC chip, the wick and the constant voltage device can be reasonably arranged, the space can be fully utilized, the light can be uniformly emitted, the light shielding effect is better, and the light emission efficiency is higher.

[0004] In order to solve the above technical problems, the technical solution of the utility model is:

[0005] A constant voltage regular dual-color COB comprises a COB substrate, wherein a light source mounting groove and a plurality of constant voltage IC chip mounting grooves connected to the light source mounting groove are provided on the COB substrate, a plurality of warm light chips and cold light chips are provided on the light source mounting groove, a constant voltage IC chip is provided on the constant voltage IC chip mounting groove, a light-proof silicone layer is coated above the constant voltage IC chip mounting groove, a plurality of power pads are provided at the diagonals of the COB substrate, and the constant voltage IC chip is electrically connected to the warm light chip, the cold light chip and the power pads respectively.

[0006] Preferably, a dam is provided on the COB substrate, the light source mounting groove and the constant voltage IC chip mounting groove are both located in the dam, and a fluorescent glue layer is covered on the dam.

[0007] Preferably, the constant voltage IC chip mounting groove comprises a first constant voltage IC chip mounting groove, a second constant voltage IC chip mounting groove, a third constant voltage IC chip mounting groove and a fourth constant voltage IC chip mounting groove, the vertices of which are sequentially distributed in a square shape.

[0008] Preferably, the power pad includes a plurality of warm light positive pads, warm light negative pads, cold light positive pads and cold light negative pads, the warm light chip is electrically connected to the warm light positive pad and the warm light negative pad, respectively, and the cold light chip is electrically connected to the cold light positive pad and the cold light negative pad, respectively.

[0009] Preferably, each of the warm light chip and the cold light chip is connected in series, and the constant voltage IC chip is electrically connected to the warm light chip, the cold light chip and the power pad respectively through a circuit conductive layer.

[0010] Preferably, the warm light chip and the cold light chip are both upright LED lamp cores, and the bottom surface of the light source installation groove is a reflective surface.

[0011] By adopting the above technical scheme, the utility model provides a constant voltage upright two-color COB, which has the following beneficial effects: a light source mounting groove and a plurality of constant voltage IC chip mounting grooves connected with the light source mounting groove are provided on the COB substrate in the constant voltage upright two-color COB, a plurality of warm light chips and cold light chips are provided on the light source mounting groove, a constant voltage IC chip is provided on the constant voltage IC chip mounting groove, a light-proof silicone layer is coated above the constant voltage IC chip mounting groove, a plurality of power pads are provided at the diagonal portions of the COB substrate, the constant voltage IC chip is electrically connected to the warm light chip, the cold light chip and the power pads respectively, and the constant voltage IC chip is installed by providing the constant voltage IC chip mounting groove, so that the wicks can be evenly arranged, the wicks and constant voltage devices can be reasonably arranged, the space can be fully utilized, and uniform light emission can be achieved; and the light-proof silicone layer can make the constant voltage IC chip light-proof, so the light-proof effect is good and the light emission efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the first embodiment of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the second embodiment of the present utility model;

[0014] In the figure, 1-COB substrate, 2-light source mounting groove, 3-warm light chip, 4-cold light chip, 5-constant voltage IC chip, 6-light-proof silicone layer, 7-dam, 8-first constant voltage IC chip mounting groove, 9-second constant voltage IC chip mounting groove, 10-third constant voltage IC chip mounting groove, 11-fourth constant voltage IC chip mounting groove, 12-warm light positive electrode pad, 13-warm light negative electrode pad, 14-cold light positive electrode pad, 15-cold light negative electrode pad, 16-circuit conductive layer. DETAILED DESCRIPTION

[0015] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0016] 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 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0017] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0018] like Figure 1-2As shown, in the structural schematic diagram of the utility model, the constant voltage positive dual-color COB includes a COB substrate 1, the COB substrate 1 is provided with a light source mounting groove and 2 a plurality of constant voltage IC chip mounting grooves connected to the light source mounting groove 2, the light source mounting groove 2 is provided with a plurality of warm light chips 3 and cold light chips 4, the constant voltage IC chip mounting groove is provided with a constant voltage IC chip 5, the top of the constant voltage IC chip mounting groove is coated with a light-proof silicone layer 6, and the COB substrate 1 is provided with a plurality of power pads at the diagonal, and the constant voltage IC chip 5 is electrically connected to the warm light chip 3, the cold light chip 4 and the power pads respectively. It can be understood that the COB substrate 1 is arranged in a square shape, and the cross section of the COB substrate 1 is a square, or a rectangle, etc. The warm light chip 3, the cold light chip 4, the constant voltage IC chip and the power pad are all welded on the COB substrate 1, and the power pad can be used to connect to an external power supply, and the COB substrate 1 can be a general PCB circuit board, etc., or an aluminum light source substrate, etc.

[0019] Specifically, a dam 7 is provided on the COB substrate 1, the light source mounting groove 2 and the constant voltage IC chip mounting groove are both located in the dam 7, and the dam 7 is covered with a fluorescent glue layer; the constant voltage IC chip mounting groove includes a first constant voltage IC chip mounting groove 8, a second constant voltage IC chip mounting groove 9, a third constant voltage IC chip mounting groove 10 and a fourth constant voltage IC chip mounting groove 11, the vertices of which are sequentially distributed in a square shape; the power supply pad includes a plurality of warm light positive electrode pads 12, warm light negative electrode pads 13, cold light positive electrode pads 14, and a plurality of cold light positive electrode pads 15. The warm light chip 3 is electrically connected to the warm light positive pad 12 and the warm light negative pad 13, and the cold light chip 4 is electrically connected to the cold light positive pad 14 and the cold light negative pad 15; each of the warm light chip 3 and the cold light chip 4 is connected in series, and the constant voltage IC chip 5 is electrically connected to the warm light chip 3, the cold light chip 4 and the power pad through the circuit conductive layer; the warm light chip 3 and the cold light chip 4 are both positive LED lamp cores, and the bottom surface of the light source installation groove 2 is a reflective surface. It can be understood that the above-mentioned warm light chip 3 and the cold light chip 4 can also have chips of other colors, the above is only an example, and the utility model is not limited thereto.

[0020] It can be understood that the constant voltage IC chip 5 can be a general constant voltage device, including a diode, a triode, etc., which will not be described in detail in the present invention; the light-proof silicone layer 6 can be black silicone, etc.

[0021] It can be understood that the utility model has a reasonable design and a unique structure. Through a unique circuit layout, the constant-voltage IC chip 5 is installed by setting a constant-voltage IC chip installation groove, the wicks can be evenly arranged, the wicks and constant-voltage devices can be reasonably arranged, and the space can be fully utilized to achieve uniform light output; and the light-proof silicone layer 6 can protect the constant-voltage IC chip 5 from light, the light-proof effect is better, and the light output efficiency is higher.

[0022] The above is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A constant voltage positive mounting two-color COB, including a COB substrate, characterized in that: The COB substrate is provided with a light source mounting groove and a plurality of constant voltage IC chip mounting grooves connected with the light source mounting groove, the light source mounting groove is provided with a plurality of warm light chips and cold light chips, the constant voltage IC chip mounting groove is provided with a constant voltage IC chip, a light-proof silicone layer is coated above the constant voltage IC chip mounting groove, a plurality of power pads are provided at the diagonals of the COB substrate, and the constant voltage IC chip is electrically connected to the warm light chip, the cold light chip and the power pads, respectively.

2. The constant voltage dual-color COB according to claim 1, characterized in that: A dam is arranged on the COB substrate, the light source installation groove and the constant voltage IC chip installation groove are both located in the dam, and a fluorescent glue layer is covered on the dam.

3. The constant voltage dual-color COB according to claim 1, characterized in that: The constant voltage IC chip mounting groove comprises a first constant voltage IC chip mounting groove, a second constant voltage IC chip mounting groove, a third constant voltage IC chip mounting groove and a fourth constant voltage IC chip mounting groove, the vertices of which are sequentially distributed in a square shape.

4. The constant voltage dual-color COB according to claim 1, characterized in that: The power pad includes a plurality of warm light positive pads, warm light negative pads, cold light positive pads and cold light negative pads. The warm light chip is electrically connected to the warm light positive pad and the warm light negative pad, respectively. The cold light chip is electrically connected to the cold light positive pad and the cold light negative pad, respectively.

5. The constant voltage dual-color COB according to claim 1, characterized in that: Each of the warm light chip and the cold light chip is connected in series, and the constant voltage IC chip is electrically connected to the warm light chip, the cold light chip and the power pad respectively through the circuit conductive layer.

6. The constant voltage dual-color COB according to claim 1, characterized in that: The warm light chip and the cold light chip are both positive LED lamp cores, and the bottom surface of the light source installation groove is a reflective surface.

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