CN107990265B

CN107990265B - Marine signal lamp

Info

Publication number: CN107990265B
Application number: CN201711216260.2A
Authority: CN
Inventors: 冉文方
Original assignee: Yangzhou Didi Lighting Co Ltd
Current assignee: Yangzhou Didi Lighting Co Ltd
Priority date: 2017-11-28
Filing date: 2017-11-28
Publication date: 2020-10-13
Anticipated expiration: 2037-11-28
Also published as: CN107990265A

Abstract

The invention discloses an offshore signal lamp 10, comprising: the solar energy LED lamp comprises a protective shell 11, a bracket 12, a solar cell 13, a storage battery 14, a controller 15 and an LED light source 16; the support 12 is fixedly connected to the middle position in the protective shell 11, the LED light source 16 is fixedly connected to the middle position on the support 12, the solar cell panel 14 is fixedly connected to the support 12 and located around the LED light source 16, and the storage battery 14 and the controller 15 are fixedly connected to the bottom position in the protective shell 11. The marine signal lamp provided by the invention has the advantages of good heat dissipation effect, simple structure and long service life.

Description

Marine signal lamp

Technical Field

The invention belongs to the field of illumination, and particularly relates to a marine signal lamp.

Background

At night or in poor weather conditions, visibility at sea becomes very low, which causes great difficulty in navigation of the ship and even serious safety accidents. In order to provide safe driving and protecting for sailing personnel, signal lamps are usually arranged at sea for providing relative position coordinate information for the sailing personnel in the case of low visibility.

At sea, due to the limitation of geographical factors, it is difficult to provide power for the signal lamp by installing a cable, so the signal lamp at sea is usually powered by solar energy or wind energy.

However, due to the relatively low conversion rate, neither solar energy nor wind energy can fully satisfy the illumination requirements of the signal lamp at night and under other conditions with low visibility, so that great restrictions are brought to the use of the signal lamp at sea. In addition, since the signal lamp has a long operating time and a large amount of heat generation, if the signal lamp is improperly heat-dissipated, the service life of the signal lamp is greatly reduced.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a marine signal lamp with high reliability.

The embodiment of the invention provides an offshore signal lamp 10, which comprises: the solar energy LED lamp comprises a protective shell 11, a support 12, a solar cell 13, a storage battery 14, a controller 15 and an LED light source 16, wherein the support 12 is fixedly connected to the middle position in the protective shell 11, the LED light source 16 is fixedly connected to the middle position on the support 12, the solar cell panel 14 is fixedly connected to the support 12 and is positioned around the LED light source 16, and the storage battery 14 and the controller 15 are fixedly connected to the bottom position in the protective shell 11; wherein,

the solar cell 13, the controller 15 and the storage battery 14 are electrically connected in series in sequence;

the LED light source 16 is electrically connected to the controller 15.

In one embodiment of the present invention, the protective housing 11 is made of a light-transmissive hard material.

In one embodiment of the present invention, the interior of the protective housing 11 forms a sealed space.

In one embodiment of the present invention, the solar cell 13 is a crystalline silicon solar cell.

In one embodiment of the present invention, the battery 14 is a lead acid battery or a gel battery.

In one embodiment of the present invention, the LED light source 16 includes:

a base 161;

an LED lamp 162 disposed at a middle position of an upper surface of the base 161;

a reflective cup 163 disposed on the upper surface of the base 161 and located outside the LED light source 162;

a heat sink 164 disposed on the upper surface of the base 161 and located outside the reflective cup 163;

and a condensing lens 165 disposed at the top end of the reflector 163.

In one embodiment of the present invention, the base 161 and the heat sink 164 are both made of aluminum material.

In one embodiment of the present invention, the outer surface of the heat sink 164 is provided with concave grooves.

In one embodiment of the present invention, the reflector cup 163 is PPS material.

In one embodiment of the present invention, the LED lamp 162 includes: a heat dissipation substrate 1621, a first encapsulation layer 1622, a second encapsulation layer 1624, a third encapsulation layer 1625, a fourth encapsulation layer 1627, a plurality of first ball lenses 1623, a plurality of second ball lenses 1626;

the first encapsulating layer 1622 is positioned over the heat dissipating substrate 1621, the first ball lens 1623 is at least partially embedded in the first encapsulating layer 1622, and the second encapsulating layer 1624 is positioned over the non-embedded portion of the ball lens 1623 and the first encapsulating layer 1622;

the third encapsulant layer 1625 is positioned over the second encapsulant layer 1624, the second ball lens 1626 is at least partially embedded in the third encapsulant layer 1625, and the fourth encapsulant layer 1627 is positioned over the non-embedded portion of the second ball lens 1626 and the third encapsulant layer 1625.

Compared with the prior art, the invention has the beneficial effects that at least:

the marine signal lamp provided by the invention has the advantages of good heat dissipation effect, simple structure and long service life.

Drawings

Fig. 1 is a schematic structural diagram of an offshore signal lamp according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an LED light source according to an embodiment of the present invention;

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

fig. 4 is a schematic structural diagram of an LED chip according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.

Example one

Referring to fig. 1, fig. 1 is a schematic structural diagram of an offshore signal lamp according to an embodiment of the present invention. The maritime signal lamp can be applied to various seaports, customs and islands, and is used as a navigation mark, a warning lamp and other related applications, particularly remote and unattended scenes. Specifically, the marine signal lamp 10 includes: protective housing 11, support 12, solar cell 13, battery 14, controller 15 and LED light source 16, support 12 rigid coupling in intermediate position department in protective housing 11, LED light source 16 rigid coupling in intermediate position department on the support 12, solar cell panel 14 rigid coupling in on the support 12 and lie in around the LED light source 16, battery 14 with the equal rigid coupling of controller 15 in bottom position department in protective housing 11.

In the daytime, when the photosensitive device in the controller 15 senses light, the solar cell 13 is controlled to start working, solar energy is converted into electric energy, and the electric energy is stored in the storage battery 14 through the controller 15; at night or when the light intensity is insufficient, the battery 14, the controller 15 and the LED light source 16 form a path, and the stored electric energy in the battery 14 is discharged for supplying the LED light source 16 with illumination.

The LED light source 16 is electrically connected to the controller 15.

The marine signal lamp that this embodiment provided, the radiating effect is good, simple structure, long service life.

Example two

The present embodiment is further described with reference to the first embodiment for explaining the principle and implementation of the present invention.

Specifically, the protective casing 11 is made of a light-transmitting hard material. Since the solar cell 13 is disposed inside the protective casing 11, it is required to have a good light transmittance so as to ensure that the solar cell 13 can obtain sufficient light and convert the light into electric energy. In addition, the protective casing 11 has strong corrosivity due to high salt alkalinity of the air at sea, and therefore, the protective casing 11 should also have saline-alkali corrosion resistance.

Further, a sealed space is formed inside the protective housing 11. The solar cell 13, the LED light source 16 and the like are easily damaged by saline-alkali corrosion. It is therefore necessary to seal these devices completely inside the protective casing 11 so as not to be damaged. The opening of the protective casing 11 should be welded and sealed to prevent air from entering the inside thereof.

The solar cell 13 is a single crystal silicon solar cell. The monocrystalline silicon solar cell has high conversion efficiency, long service life and reliable performance, and is currently used as a mainstream product in the solar cell.

The storage battery 14 is a lead-acid battery or a gel battery. The lead-acid battery has stable working voltage, wide use temperature and working current, good storage performance and low manufacturing cost; the gel battery has the advantages of straight discharge curve, high inflection point, long service life and good high-temperature and low-temperature characteristics, and is suitable for being used under variable climatic conditions.

In view of the fact that the operation time of the marine signal lamp is long and the calorific value of the marine signal lamp is large, the structure of the LED light source is also optimally designed, specifically, please refer to fig. 2, where fig. 2 is a schematic structural diagram of an LED light source provided in an embodiment of the present invention, and the LED light source 16 includes:

a base 161;

the LED lamps 162 are arranged in the middle of the upper surface of the base 161, and the number of the LED lamps 162 is selected according to actual needs;

and a condensing lens 165 disposed at the top end of the reflector 163.

Preferably, the base 161 and the heat sink 164 are both made of aluminum material. The aluminum material has low density and low price, is a good heat dissipation material, and is widely used in electronic products.

Further, the outer surface of the heat sink 164 is provided with concave grooves. The concave grooves are formed on the outer surface of the heat sink 164 to increase the heat dissipation area and improve the heat dissipation efficiency.

Preferably, the reflector cup 163 is PPS material. The PPS material has the characteristics of high temperature resistance and easy processing, so the PPS material can be used for processing and manufacturing the reflecting cup.

In addition, in order to improve the light emitting efficiency and the heat dissipation effect of the LED lamp 162, the structure of the LED lamp 162 is also optimized, specifically, please refer to fig. 3, where fig. 3 is a schematic structural diagram of an LED lamp according to an embodiment of the present invention, the LED lamp 162 includes:

a heat dissipation substrate 1621, a first encapsulation layer 1622, a second encapsulation layer 1624, a third encapsulation layer 1625, a fourth encapsulation layer 1627, a plurality of first ball lenses 1623, a plurality of second ball lenses 1626;

The first encapsulating layer 1622, the second encapsulating layer 1624, the third encapsulating layer 1625, the fourth encapsulating layer 1627, the first ball lens 1623, and the second ball lens 1626 are all of a silica gel structure. The fourth encapsulation layer 1627 has a convex structure. Specifically, the shape may be a hemisphere, an ellipsoid, or the like. The fourth packaging layer directly influences the light emitting efficiency, and generally has three forms of flat, hemispherical and paraboloid, wherein the hemispherical light emitting angle is largest, and the packaging layer is suitable for common lighting application; the parabolic light-exit angle is minimal and suitable for local lighting applications; and a flat shape between the two, suitable for indicating illumination.

The LED light source packaging process provided by the embodiment of the invention adopts the spherical lens, solves the technical problem that the illumination brightness of the LED light source is not concentrated enough, does not need secondary shaping, and is simple in process and low in cost. In addition, compared with the prior art, the fluorescent powder is not required to be coated on the chip and is added into other silica gel layers, so that the fluorescent powder is separated from the LED chip, and the problem of quantum efficiency reduction of the fluorescent powder caused by high temperature is solved.

Further, the refractive index of the first encapsulation layer 1622, the refractive index of the second encapsulation layer 1624, the refractive index of the third encapsulation layer 1625 and the refractive index of the fourth encapsulation layer 1627 are sequentially increased; and the refractive index of the first spherical lens 1623 is greater than the refractive index of the second spherical lens 1626, and the refractive index of the second spherical lens 1626 is greater than the refractive index of the fourth encapsulation layer 1627.

In specific implementation, in order to simplify the operation process, the second packaging layer and the third packaging layer can be made of the same material so as to reduce one-time coating process. In this embodiment, the fourth encapsulant layer has a refractive index of 1.4-1.6. For example, methyl 1.41 refractive index silicone rubber and phenyl high refractive index 1.54 silicone rubber can be selected.

The refractive index of the silica gel layer is increased from bottom to top in order to inhibit total reflection, and the total reflection causes less emergent light, so that the light totally reflected to the inside is absorbed and becomes useless heat. And the refractive index of the outermost layer is not too large, because the refractive index of the outermost layer of silica gel is too large, the difference of the hit refractive index between the outer layer and the air is formed, the total reflection effect is serious, and the light transmission is not facilitated.

Generally, the material of the spherical lens silica gel can be selected from polycarbonate, polymethyl methacrylate and glass; the four-layer packaging layer material can be selected from epoxy resin, modified epoxy resin, organic silicon material and the like, and when the epoxy resin material is adopted, the four-layer packaging layer material needs to be isolated from the chip to prevent oxidation. The refractive index of the material can be adjusted according to specific components so as to adapt to different application scenes.

For guaranteeing light from gathering together the state after lens outgoing, and can not disperse, the silica gel layer in the middle of just can play the effect of once more focusing in second layer lens within the twice focus, otherwise light has more dispersed on the contrary, the effect of focusing reduces. For simple focal length calculation, the refractive indexes of the upper and lower layers of silica gel of the lens are both n1, the refractive index of the lens is n2, R is the radius of the spherical lens, and x is the distance between the upper and lower layers of spherical lens, then the focal length calculation formula is as follows:

spherical, convex-convex mirror:

focal length f ═ R/[2n2-n1], then 0 ≦ x ≦ R/(n2-n 1);

generally, the distance between the upper and lower ball layers should be less than twice the focal length f, so the distance between the upper and lower ball lenses of this embodiment is 0-R/(n2-n1), and in practical implementation, the fourth encapsulation layer may be thicker. The fourth packaging layer directly influences the light emitting efficiency, and generally has three forms of flat, hemispherical and paraboloid, wherein the hemispherical light emitting angle is largest, and the packaging layer is suitable for common lighting application; the parabolic light-exit angle is minimal and suitable for local lighting applications; and a flat shape between the two, suitable for indicating illumination.

Further, an LED ultraviolet lamp wick is welded on the heat dissipation substrate. Specifically, the AlGaN-based deep ultraviolet LED structure is characterized in that the content of red, green and blue fluorescent powder is configured according to the index requirements of a specific LED light source, and the red, green and blue fluorescent powder is added into the second silica gel layer, the third silica gel layer and the fourth silica gel layer, so that the light is in different colors. Referring to fig. 4, a specific structure of the LED chip provided in the embodiment of the present invention is shown in fig. 4. Specifically, this LED chip structure from the bottom up includes in proper order: the solar cell comprises a sapphire substrate layer, an N-type AlGaN layer, a multi-quantum well layer, a P-type AlGaN layer, a P-type GaN layer and a P electrode, wherein a cathode electrode is further arranged on the surface of the N-type AlGaN layer. The first packaging layer directly contacts the LED chip on the packaging heat dissipation substrate. The diameter of the spherical lens is 10. The diameters of the spherical lenses and the distance between the adjacent spherical lenses are 10, and the adoption of the sizes can ensure that the LED light sources are concentrated as much as possible under the condition that the area of the heat dissipation substrate is certain, so that the utilization rate of the LED light sources is improved.

Further, half of the first ball lens 1623 is embedded in the first encapsulation layer 1622, and half of the second ball lens 1626 is embedded in the third encapsulation layer 1625. So that the light path of the light is more regular. Namely, the spherical lens is wrapped by the upper and lower packaging layers.

Further, the first ball lenses 1623 form a regular array on the first encapsulation layer 1622, and the second ball lenses 1626 form a regular array on the third encapsulation layer 1625. Specifically, the array may be a rectangular array, a diamond array, a triangular array, a circular array, or the like. The upper and lower two-layer lens can align and also can crisscross, and two kinds of advantages that arrange respectively: the light emitted from the lens under the condition of alignment is converged, and the focusing effect is good; the interlacing may focus light between adjacent lenses to produce a focusing effect.

Further, the heat dissipation substrate 1621 is an iron plate. The iron plate has large heat capacity, is not easy to deform, can ensure that the iron plate is closely contacted with the bottom surface of the radiating fin, and has good radiating effect. In order to achieve better effect, the thickness of the heat dissipation substrate is 0.5mm-10 mm.

The embodiment also provides a manufacturing process of the packaging structure, which comprises the following steps:

step a: and preparing a packaging heat dissipation substrate.

And welding the LED chip on the packaging heat dissipation substrate, and coating a first packaging layer on the packaging heat dissipation substrate.

Step b: the first silica gel layer is processed.

b1, pressing the first hemispherical mold on the first packaging layer to form a first hemispherical groove;

b2, baking the packaging heat dissipation substrate at a first preset temperature for a first preset time;

b3, removing the first hemispherical mould.

Wherein the first preset temperature is 90-125 ℃, and the first preset time is 15-60 min.

Step c: a first spherical lens is formed.

c1, coating first lens silica gel in the first hemispherical groove to form a lower hemispherical structure;

and c2, coating a first lens silica gel on the upper part of the lower hemispherical structure by using the first hemispherical mold to correspondingly form an upper hemispherical structure, wherein the lower hemispherical structure and the upper hemispherical structure are combined to form a first spherical lens.

Step d: and coating a third packaging layer on the second silica gel layer.

Step e: the third encapsulation layer is processed.

e1, pressing the first hemispherical mold on the third packaging layer to form a second hemispherical groove;

e2, baking the packaging heat dissipation substrate at a first preset temperature for a first preset time;

e3, removing the first hemispherical mould.

Step f: a second spherical lens is formed.

f1, coating second lens silica gel in the second hemispherical groove to form a lower hemispherical structure;

f2, coating a second lens silica gel on the upper part of the lower hemispherical structure by utilizing the first hemispherical mold to correspondingly form an upper hemispherical structure, and combining the lower hemispherical structure with the upper hemispherical structure to form a second spherical lens.

Step g: and (6) packaging.

g1, forming a hemispherical convex structure on the fourth packaging layer by using a second hemispherical mold;

g2, baking the packaging heat dissipation substrate at a second preset temperature for a second preset time;

g3, removing the second hemispherical mould. Wherein the second preset temperature is 100-150 ℃, and the second preset time is 4-12 h.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. An offshore signal lamp (10), comprising: the solar energy LED lamp comprises a protective shell (11), a bracket (12), a solar cell (13), a storage battery (14), a controller (15) and an LED light source (16); wherein,

the support (12) is fixedly connected to the middle position in the protective shell (11), the LED light source (16) is fixedly connected to the support (12) and located at the middle position, the solar panel (14) is fixedly connected to the support (12) and located around the LED light source (16), and the storage battery (14) and the controller (15) are fixedly connected to the protective shell (11) and located at the bottom position;

the LED light source (16) comprises an LED lamp (162), the LED lamp (162) comprising: the packaging structure comprises a heat dissipation substrate (1621), a first packaging layer (1622), a second packaging layer (1624), a third packaging layer (1625), a fourth packaging layer (1627), a plurality of first spherical lenses (1623) and a plurality of second spherical lenses (1626);

the first encapsulation layer (1622) is over the heat spreading substrate (1621), the first ball lens (1623) is at least partially embedded in the first encapsulation layer (1622), the second encapsulation layer (1624) is over the non-embedded portion of the ball lens (1623) and the first encapsulation layer (1622);

the third encapsulation layer (1625) being over the second encapsulation layer (1624), the second ball lens (1626) being at least partially embedded in the third encapsulation layer (1625), the fourth encapsulation layer (1627) being over the second ball lens (1626) non-embedded portion and the third encapsulation layer (1625);

the first encapsulation layer (1626) refractive index, the second encapsulation layer (1624) refractive index, the third encapsulation layer (1625) refractive index, and the fourth encapsulation layer (1627) refractive index increase in order; and the first spherical lens (1623) refractive index is greater than the second spherical lens (1626) refractive index, the second spherical lens (1626) refractive index is greater than the fourth encapsulation layer (1627) refractive index;

the distance between the upper spherical lens and the lower spherical lens is less than twice of the focal length of the lenses.

2. An offshore signal lamp (10) as claimed in claim 1, characterised in that said protective casing (11) is made of a light-transmitting hard material.

3. Marine signal lamp (10) according to claim 1, characterised in that said protective casing (11) forms a sealed space inside.

4. Marine signal lamp (10) according to claim 1, characterised in that the solar cell (13) is a monocrystalline silicon solar cell.

5. Marine signal lamp (10) according to claim 1, characterised in that the accumulator (14) is a lead-acid or gel battery.

6. An offshore signal lamp (10) as claimed in claim 1, characterised in that said LED light source (16) comprises:

a base (161);

an LED lamp (162) arranged at the middle position of the upper surface of the base (161);

the reflecting cup (163) is arranged on the upper surface of the base (161) and is positioned outside the LED light source (162);

the radiating fin (164) is arranged on the upper surface of the base (161) and is positioned outside the reflecting cup (163);

and the condensing lens (165) is arranged at the top end of the reflecting cup (163).

7. Marine signal lamp (10) according to claim 6, characterised in that the base (161) and the fins (164) are both of aluminium material.

8. Marine signal lamp (10) according to claim 6, characterised in that the outer surface of the fins (164) is provided with concave grooves.

9. Marine signal lamp (10) according to claim 6, characterised in that said reflector cup (163) is of PPS material.