CN213930841U - Lamp set - Google Patents

Abstract

The utility model provides a lamp, which comprises a light-emitting module, wherein the light-emitting module comprises an aluminum substrate and a plurality of light-emitting units, a copper-clad layer is arranged on the surface of the aluminum substrate, and any one of the plurality of light-emitting units comprises a plurality of light-emitting chips and a consumption resistor; all the light emitting chips in any one of the plurality of light emitting units and the consumption resistor are electrically connected in parallel based on the copper clad layer; all the light emitting units in the plurality of light emitting units are sequentially connected in series and electrically connected based on the copper-clad layers to form a light emitting passage. The lamp ensures that the current generated by the distributed capacitor is smaller than the conduction threshold value of the light-emitting chip by designing the arrangement circuit of the light-emitting chip, so as to ensure that the on-off state of the light-emitting chip is consistent with the expected state and improve the controllability of the light-emitting chip.

Description

Lamp set

Technical Field

The utility model relates to the lamps and lanterns field, concretely relates to lamps and lanterns.

Background

Fig. 1 shows a schematic diagram of a circuit structure of a lamp in the prior art, and fig. 2 shows a partially enlarged schematic diagram of a bonding structure of a light emitting chip in the prior art. When the light emitting module uses an aluminum substrate as the substrate 4, the aluminum substrate is first covered with an insulating layer 3, and then a circuit is formed on the insulating layer 3 by using the copper foil layer 2. When the PWM mode is used for dimming, when the duty ratio of the PWM signal is zero, the expected performance state of the light emitting chip 1 is off, but due to the position relationship between the aluminum substrate 4 and the copper foil layer 2 thereon, and between the aluminum substrate 4 and the light emitting chip 1 thereon, in particular, during use, the aluminum substrate 4 and the copper foil layer 2 thereon, and between the aluminum substrate 4 and the light emitting chip 1 thereon form a distributed capacitance, so that a weak current is generated in the circuit, and the light emitting chip 1 cannot be completely off, and the light emitting chip remains slightly bright.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that luminous chip can not extinguish completely, the utility model provides a lamps and lanterns designs through the circuit of arranging to luminous chip, makes the electric current that distributed capacitance produced be less than luminous chip's the threshold value that switches on to guarantee that luminous chip's bright state of going out is unanimous with expecting the state, improves luminous chip's controllability.

Correspondingly, the utility model provides a lamp, which comprises a light-emitting module, wherein the light-emitting module comprises an aluminum substrate and a plurality of light-emitting units, a copper-clad layer is arranged on the surface of the aluminum substrate, and any one of the plurality of light-emitting units comprises a plurality of light-emitting chips and a consumption resistor;

all the light emitting chips in any one of the plurality of light emitting units and the consumption resistor are electrically connected in parallel based on the copper clad layer;

all the light emitting units in the plurality of light emitting units are sequentially connected in series and electrically connected based on the copper-clad layers to form a light emitting passage.

In an optional embodiment, all the light emitting chips in the same light emitting unit are arranged at equal intervals along the first direction.

In an alternative embodiment, all the light emitting units are equally spaced along a second direction, and the second direction is perpendicular to the first direction.

In an optional embodiment, the aluminum substrate is grounded.

In an optional embodiment, the system further comprises an LED driving module; the LED driving module is electrically connected with the copper-clad layer.

In an optional implementation manner, the LED driving module is a PWM driving module, and the PWM driving module includes a control chip, a power supply, a switching tube, a unidirectional diode, and a charging capacitor;

the positive end of the power supply is electrically connected with the input end of the light-emitting passage based on the one-way diode, and the negative end of the power supply is electrically connected with the output end of the light-emitting passage;

the switch tube is connected between the anode of the one-way diode and the cathode end of the power supply, and the control chip is electrically connected with the control end of the switch tube;

and two ends of the charging capacitor are respectively and electrically connected to the input end and the output end of the light-emitting channel.

The utility model provides a lamp designs through the circuit of arranging to luminous chip, and the electric current that makes distributed capacitance produce is less than luminous chip's the threshold value that switches on to guarantee that luminous chip's bright state of going out is unanimous with expecting the state, improves luminous chip's controllability.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of a circuit structure of a lamp in the prior art;

FIG. 2 is a partially enlarged view of a bonding structure of a light emitting chip in the prior art;

fig. 3 is a schematic diagram of a circuit structure of a lamp according to an embodiment of the present invention;

fig. 4 is a schematic view of a bonding structure of a light emitting chip of a lamp according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Fig. 3 is a schematic diagram of a circuit structure of a lamp according to an embodiment of the present invention, and fig. 4 is a schematic diagram of a bonding structure of a light emitting chip of a lamp according to an embodiment of the present invention.

The embodiment of the utility model provides a lamp, including light-emitting module, light-emitting module includes aluminium base board 21 and a plurality of luminescence unit, aluminium base board 21 surface is provided with and covers copper layer 20, and aluminium base board 21 keeps insulating with covering between the copper layer 20 based on insulating layer 3. Any one of the plurality of light emitting units includes a plurality of light emitting chips 15 and a consumption resistor 16; all the light emitting chips 15 in any one of the plurality of light emitting units and the consumption resistor 16 are electrically connected in parallel based on the copper-clad layer 20; all the light emitting units in the plurality of light emitting units are sequentially electrically connected in series based on the copper-clad layer 20 and form a light emitting path.

The embodiment of the utility model provides a lamp, at first increase a plurality of consumption resistance 16 in luminous route and be used for consuming energy for restrain luminous route's electric current, avoid exceeding luminous chip 15's luminous threshold value because of the produced electric current of distributed capacitance drive, in the concrete implementation, consumption resistance 16's resistance needs to set up according to the quantity of the luminous chip 15 who adopts, luminous chip 15's connecting circuit, luminous route's supply voltage setting and the corresponding voltage that distributed capacitance produced, in order to satisfy required requirement; secondly, the embodiment of the utility model provides a connecting circuit to luminescence chip 15 has set up, divide equally luminescence chip 15 into a plurality of luminescence unit, luminescence chip 15 inside luminescence unit keeps the parallel relation with corresponding consumption resistance 16, keep the series relation in order to form luminous route between the luminescence unit, on the one hand, consumption resistance 16 is in the luminescence unit that corresponds, the effect of reposition of redundant personnel has been played, on the other hand, form luminescence unit series connection again after grouping luminescence chip 15, consumption resistance 16 can be to the accurate setting of local luminescence unit circuit, in order to guarantee the coordination of consumption and function, it constructs the degree of difficulty to reduce the circuit.

Specifically, in order to destroy the distributed capacitor structure, optionally, the surface of the aluminum substrate 21 facing the copper-clad layer 20 and the surface of the copper-clad layer 20 facing the aluminum substrate 21 may be roughened and polished to have a roughness below RA value 6.3, so as to reduce the capacitance of the distributed capacitor.

Specifically, in order to facilitate the circuit configuration and take into account the illumination requirement of the light emitting module, referring to the structure shown in the drawing, in an alternative embodiment, all the light emitting chips 15 in the same light emitting unit are arranged at equal intervals along the first direction. In an alternative embodiment, all the light emitting units are equally spaced along a second direction, and the second direction is perpendicular to the first direction. Correspondingly, the copper foil layer is processed into a corresponding bonding pad structure for bonding connection of the light emitting chip 15.

In an optional embodiment, the aluminum substrate 21 is grounded to reduce current fluctuation in the circuit and ensure stability of the distributed capacitor, and accordingly, functional effectiveness of the consumption resistor 16 can be ensured.

In an optional embodiment, the system further comprises an LED driving module; the LED driving module is electrically connected to the copper-clad layer 20. The LED driving module is used to drive the operation of the light emitting path and control the light emitting chip 15.

Specifically, in an optional embodiment, the LED driving module is a PWM driving module, and the PWM driving module includes a control chip, a power supply 11, a switching tube 14, a unidirectional diode 12, and a charging capacitor 13.

Specifically, the utility model discloses power supply 11 chooses commercial power input for use, utilizes bridge rectifier structure rectification to be the direct current after, carries out external power supply through the filtering.

The positive end of the power supply is electrically connected with the input end of the light-emitting passage based on the one-way diode 12, and the negative end of the power supply is electrically connected with the output end of the light-emitting passage;

the switch tube 14 is connected between the anode of the unidirectional diode 12 and the cathode of the power supply, and the control chip is electrically connected with the control end of the switch tube 14;

two ends of the charging capacitor 13 are electrically connected to the input end and the output end of the light emitting channel respectively.

The utility model provides a lamp designs through the circuit of arranging to emitting chip 15, and the electric current that makes distributed capacitance produce is less than emitting chip 15's the threshold value that switches on to guarantee that emitting chip 15's bright state of going out is unanimous with expecting the state, improves emitting chip 15's controllability.

The above detailed description is made on a lamp provided by the embodiment of the present invention, and the principle and the implementation of the present invention are explained by applying a specific example, and the above description of the embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims (6)

1. A lamp is characterized by comprising a light-emitting module, wherein the light-emitting module comprises an aluminum substrate and a plurality of light-emitting units, a copper-clad layer is arranged on the surface of the aluminum substrate, and any one of the plurality of light-emitting units comprises a plurality of light-emitting chips and a consumption resistor;

all the light emitting chips in any one of the plurality of light emitting units and the consumption resistor are electrically connected in parallel based on the copper clad layer;

all the light emitting units in the plurality of light emitting units are sequentially connected in series and electrically connected based on the copper-clad layers to form a light emitting passage.

2. The lamp of claim 1, wherein all the light emitting chips in the same light emitting unit are equally spaced along the first direction.

3. The luminaire of claim 2, wherein all light emitting units are equally spaced along a second direction, the second direction being perpendicular to the first direction.

4. The lamp of claim 1, wherein the aluminum substrate is grounded.

5. The luminaire of claim 1, further comprising an LED driver module; the LED driving module is electrically connected with the copper-clad layer.

6. The lamp according to claim 5, wherein the LED driving module is a PWM driving module, and the PWM driving module comprises a control chip, a power supply, a switching tube, a one-way diode and a charging capacitor;

the positive end of the power supply is electrically connected with the input end of the light-emitting passage based on the one-way diode, and the negative end of the power supply is electrically connected with the output end of the light-emitting passage;

the switch tube is connected between the anode of the one-way diode and the cathode end of the power supply, and the control chip is electrically connected with the control end of the switch tube;

and two ends of the charging capacitor are respectively and electrically connected to the input end and the output end of the light-emitting channel.

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