Patent Description:
Further such showcase strip lamps are known e.g. from <CIT>, <CIT>, <CIT>, <CIT>, <CIT> and <CIT>.

Showcases are used to display commodities or collections. They are often used in shopping malls, supermarkets, museums, exhibition halls and other places. They are usually made of high-transparent glass and assembled into a closed cabinet with beautiful appearance and full display of exhibits. Showcase lights are lamps installed inside or above the display cabinets. In order to provide a good lighting effect for the exhibits, they need to protrude the color, shape, glare and other characteristics of the exhibits, and also make the lamp body as invisible as possible without causing interference to the exhibits. Due to the need for fixing and heat dissipation, the size of the showcase light cannot be made small, so the invisible effect cannot be achieved.

In view of this, the present invention provides a showcase strip lamp to solve the above technical problems.

The showcase strip lamp according to the invention is specified in claim <NUM> and is characterized in that:.

Advantageously, the lamp tube is made of metal material.

Advantageously, the lamp tube is a round tube.

Advantageously, the outer diameter of the cross section of the lamp tube is <NUM> ~ <NUM>.

Advantageously, the light source uses LED chips, and the power of a single chip is <NUM>.

Advantageously, the heat conducting member is a heat pipe.

Advantageously, one side of the heat conducting member is a plane in contact with the back surface of the circuit board, and opposite side is a curved surface that fits with the inner wall of the lamp tube.

According to the invention, an insulation baffle is provided between the front surface of the circuit board and the inner wall of the lamp tube, and the insulation baffle is provided with a second light emitting hole corresponding to the light source.

Advantageously, the circuit board and the insulation baffle are fixedly connected.

Advantageously, each light source is provided with an optical lens in its light emitting direction.

According to the invention, the light shield is provided with a first fixed connecting member that cooperates with the first light emitting hole.

Advantageously, the insulation baffle is provided with a second fixed connecting member that cooperates with the light shield.

Advantageously, the end cover assembly uses a plug connector that is rotatable and electrically connected.

Advantageously, the end cover assembly is a DC plug that encapsulates the end of the lamp tube.

Advantageously, when the end cover assembly is a male plug that encapsulates the end of the lamp tube, the end cover assembly is disposed in the lamp tube and the lamp tube is provided with an extension section outward, and an inner wall of the extension section is provided with an elastic member which cooperates with an outer peripheral wall of a female plug for external power supply, and the elastic member provides positioning support for relative rotation of the plug connector.

Advantageously, the end cover assembly is provided with two sets, which are respectively disposed at both ends of the lamp tube.

Advantageously, two sets of end cover assemblies are male and female plug connectors, respectively.

Advantageously, at least one power supply upright tube electrically connected to the end cover assembly is further provided, and the power supply upright tube is provided with a power supply plug connector that cooperates with the end cover assembly.

Advantageously, a power supply plug connector is provided on the top of the power supply upright tube.

Advantageously, the plugging direction of the power supply plug connector is perpendicular to the power supply upright tube.

The showcase strip lamp of the present invention quickly conducts the heat on the circuit board to the lamp tube through the heat conducting member, and the lamp tube is only provided with a first light emitting hole for light output, and the lamp tube is used for heat dissipation as a whole. The heat dissipation effect is good, and then the power of the light source can be set larger, so that the strip lamp can also realize the key lighting.

The following describes embodiments of the present invention with reference to the accompanying drawings, in which:.

Hereinafter, specific embodiments of the present invention will be described in further detail based on the drawings. It should be understood that the description of the embodiments of the present invention is not intended to limit the protection scope of the present invention.

As shown in <FIG>, the showcase strip lamp of this embodiment includes a lamp tube <NUM>, a circuit board <NUM>, a plurality of light sources <NUM>, a heat conducting member <NUM>, and an end cover assembly <NUM>. the lamp tube <NUM> and the end cover assembly <NUM> are generally used to carry other components and used for fixing and installing the lamp body. The end cover assembly <NUM> is also used for connecting external power supply device in a form that can be set according to assembly requirements. In this embodiment, a plurality of first light emitting holes <NUM> arranged at intervals in the length direction are arranged on tube wall of the lamp tube <NUM>; the circuit board <NUM> is provided in the lamp tube <NUM>, and the front face faces the first light emitting hole <NUM>; A plurality of light sources <NUM> corresponding to each first light emitting hole <NUM> are arranged on the circuit board; the heat conducting member <NUM> is contact-connected between the back of the circuit board <NUM> and the inner wall of the lamp tube <NUM>; the end cover assembly <NUM> is provided on ends of the lamp tube.

The above structure quickly conducts the heat on the circuit board <NUM> to the lamp tube <NUM> through the heat conducting member <NUM>, and the lamp tube <NUM> is only provided with a first light emitting hole <NUM> for emitting light, and the lamp tube is used for heat dissipation as a whole. The heat dissipation effect is good, and then the power of the light source can be set larger, so that the strip lamp can also realize the key lighting.

In order to improve the heat dissipation effect, the lamp tube <NUM> in this embodiment adopts a metal material, and it is further preferred that the metal material is metal copper. To balance strength, it is further preferred that the metal material is H62 brass. Therefore, the tube wall can be made very thin, and the space in the lamp tube <NUM> is relatively larger.

The cross-sectional shape of the lamp tube <NUM> is a circle, a square, or other shapes. In this embodiment, the lamp tube <NUM> is a round tube, so that both small volume and large heat dissipation area are considered.

In this embodiment, the outer diameter of the cross section of the lamp tube <NUM> is <NUM> ~ <NUM>; the light source <NUM> uses LED chips, and the power of a single chip is <NUM>. In this embodiment, LED chips with medium and high power are used to realize single key illumination of the strip lamp with a smaller size.

The heat conducting member <NUM> uses a metal material. In order to improve the heat conducting effect, the heat conducting member <NUM> is a heat pipe. The heat pipe can quickly extract heat and improve the heat dissipation effect. Further preferably, one side of the heat conducting member <NUM> is a plane in contact with the back surface of the circuit board <NUM>, and the opposite side is a curved surface that fits with the inner wall of the lamp tube <NUM>.

In order to improve the safety factor of the lamp, in this embodiment, an insulation baffle <NUM> is provided between the front surface of the circuit board <NUM> and the inner wall of the lamp tube <NUM>, and the insulation baffle <NUM> is provided with a second light emitting hole <NUM> corresponding to the light source <NUM>. The insulation baffle <NUM> can be made of plastics and other insulating materials with good plasticity. In order to further reduce the size, the LED chip is embedded in the second light emitting hole <NUM>. To further reduce the size, in this embodiment, the circuit board and the insulation baffle are fixed connection. There are many ways of fixed connection. In this embodiment, the insulation baffle <NUM> is provided with a protrusion <NUM> on the side facing the circuit board <NUM>, and the circuit board <NUM> is provided with a fixing hole <NUM> that cooperates with the protrusion <NUM>. During fixation, the protrusion <NUM> passes through the fixing hole <NUM> and then is ironed on the back to complete the fixed connection.

To facilitate positioning, on the side of the insulation baffle <NUM> facing the circuit board <NUM> is provided with a mounting groove <NUM> for accommodating the circuit board <NUM>, and the heat conducting member <NUM> is also partially located in the mounting groove <NUM>.

Of course, the insulation baffle <NUM> can also be in the form of a film. When the insulating film is transparent, it can be directly covered over the light source, and no hole is needed.

In order to better implement the key lighting, in this embodiment, each light source <NUM> is provided with an optical lens <NUM> in its light emitting direction. The optical lens <NUM> can be directly fixed on the circuit board <NUM> or the insulation baffle <NUM>. The optical lens <NUM> is a condenser lens.

In order to prevent glare, each first light emitting hole <NUM> is correspondingly provided with a light shield <NUM>. In order to facilitate the installation of the light shield <NUM>, the light shield <NUM> is provided with a first fixed connecting member <NUM> which cooperates with the first light emitting hole <NUM>. Of course, the light shield <NUM> can also be connected to the insulation baffle <NUM> to be fixed, and the insulation baffle <NUM> is provided with a second fixed connecting member <NUM> that cooperates with the light shield <NUM>. In order to make the fixing of the light shield <NUM> more reliable, at the same time, the insulation baffle <NUM> and the lamp tube <NUM> can be fixedly connected through the light shield <NUM>. To simplify the assembly, in this embodiment, a first fixed connecting member <NUM> and second fixed connecting member <NUM> that cooperate with the light shield <NUM> are provided at the same time.

In this embodiment, in order to facilitate assembly, the optical lens <NUM> is fixed in the light shield <NUM>, and the inner side of the light shield <NUM> is provided with a inclined surface <NUM>, and both sides of the optical lens <NUM> are provided with a fixed surface <NUM> that cooperates with the inclined surface <NUM>, after the light shield <NUM> is fixed, the optical lens <NUM> is pressed and fixed.

In order to make the connection stronger, in this embodiment, the first light emitting hole <NUM> is a square hole, but it can also be of other shapes. The first light emitting hole <NUM> includes two first sides <NUM> parallel to the longitudinal direction of the lamp tube <NUM> and two second sides <NUM> perpendicular to the longitudinal direction of the lamp tube <NUM>.

The light shield <NUM> is provided with two first fixed connecting members <NUM> which are respectively engaged with the first side <NUM>. There are two second fixed connecting member <NUM> corresponding to each light shield <NUM>, and the two second fixed connecting member <NUM> are distributed on both sides of the second light emitting hole <NUM> along the length direction of the lamp tube <NUM>.

Specifically, the first fixed connecting member <NUM> includes a clamping edge <NUM> extending into the first light emitting hole <NUM> and a hook portion <NUM> provided at the free end of the clamping edge <NUM>. Two sides of the light shield <NUM> are provided with card slots <NUM>, and the second fixed connecting member <NUM> is a buckle matched with the card slot.

The end cover assembly <NUM> is used to encapsulate the end of the lamp tube <NUM> and to set plug connector. In this embodiment, the end cover assembly <NUM> uses a plug connector that is rotatably and electrically connected. Specifically, the end cover assembly <NUM> is a DC plug that encapsulates the end of the lamp tube <NUM>.

In order to facilitate installation, in this embodiment, the base <NUM> of the end cover assembly <NUM> is fixedly connected to the insulation baffle <NUM>, and the end of the insulation baffle <NUM> is provided with a fixing groove <NUM> with a radial opening. One end of the end cover assembly <NUM> connected to the circuit board is provided with a radial raised snap ring <NUM> matched with the fixing groove <NUM>. The bottom arc fitting of the fixed groove <NUM> and the snap ring <NUM> and the two sides' planes are fitted to achieve axial and circumferential fixation.

The showcase strip lamps of this embodiment can be plug-in power supply at one end or plug-in power supply at both ends. In this embodiment, the end cover assembly <NUM> is provided with two sets, which are respectively disposed at both ends of the lamp tube <NUM>.

In order to facilitate the interconnection of multiple showcase strip lamps, the two sets of end cover assemblies <NUM> are male and female plug connectors, respectively. Therefore, the showcase strip lamps of this embodiment can be interconnected.

In order to make the lamp body of this embodiment rotate more smoothly and facilitate positioning, when the end cover assembly <NUM> is a male plug <NUM> that encapsulates the end of the lamp tube <NUM>, the end cover assembly <NUM> is disposed in the lamp tube <NUM> and the lamp tube <NUM> is provided with an extension section <NUM> outward, and an inner wall of the extension section <NUM> is provided with an elastic member <NUM> which cooperates with an outer peripheral wall of a female plug for external power supply (that is, the power supply plug connector <NUM> in this embodiment). The elastic member <NUM> provides positioning support for the relative rotation of the plug connector.

The structure of the elastic member <NUM> can use an elastic washer or a drum spring. The elastic member <NUM> of this embodiment includes mounting rings <NUM> provided on both sides and an elastic piece <NUM> connecting the two mounting rings <NUM>. The middle part of the elastic piece <NUM> is concave inward, so that when the female plug and the male plug cooperate, the outer peripheral wall of the female plug is pressed against the elastic piece <NUM>, positioning is realized through friction, and stable rotation is ensured at the same time.

In order to facilitate fixing and installation, in this embodiment, at least one power supply upright tube <NUM> electrically connected to the end cover assembly <NUM> is further provided, and the power supply upright tube <NUM> is provided with a power supply plug connector <NUM> that cooperates with the end cover assembly <NUM>. In this embodiment, the power supply plug connector <NUM> is a female plug connecting externally power supply. When the end cover assembly <NUM> is a female plug, the power supply plug connector <NUM> is provided with an inner cavity for accommodating the female plug and an elastic member provided in the inner cavity.

The power supply upright tube <NUM> is generally provided with a wire for power supply, and a mounting seat <NUM> fixed to the showcase is provided at the bottom. The mounting seat <NUM> can adopt the structure in the prior art, which is not the focus of the present invention and will not be repeated here.

In this embodiment, two power supply upright tubes <NUM> are provided, which are arranged on both sides of the lamp tube <NUM>, and cooperate with a plug connector, respectively, to achieve the overall effect of the goal light.

In this embodiment, a power supply plug connector <NUM> is provided on the top of the power supply upright tube <NUM>. The power supply plug connector <NUM> is a detachable elbow, and the plugging direction of the power supply plug connector <NUM> is perpendicular to the power supply upright tube <NUM>.

In addition, the power supply upright tube <NUM> is not necessary, and the structure supporting the lamp body can be externally installed, such as a snap structure and the like. Multiple lamps <NUM> can also be interconnected through the interconnection of the end cover assembly <NUM>, as shown in <FIG>.

Claim 1:
A showcase strip lamp, comprising:
a lamp tube (<NUM>), having a tube wall provided with a plurality of first light emitting holes (<NUM>) arranged at intervals in the length direction;
a circuit board (<NUM>), disposed in the lamp tube (<NUM>) and having a front face facing the plurality of first light emitting holes (<NUM>);
a plurality of light sources (<NUM>), corresponding to each first light emitting hole (<NUM>) and arranged on the circuit board;
a heat conducting member (<NUM>), being contact-connected between the back of the circuit board (<NUM>) and the inner wall of the lamp tube (<NUM>);
and an end cover assembly (<NUM>), disposed on ends of the lamp tube;
wherein each first light emitting hole (<NUM>) is correspondingly provided with a light shield (<NUM>),
wherein an insulation baffle (<NUM>) is provided between the front surface of the circuit board (<NUM>) and the inner wall of the lamp tube (<NUM>), and the insulation baffle (<NUM>) is provided with a second fixed connecting member (<NUM>) that cooperates with the light shield (<NUM>), and there are two second fixed connecting member (<NUM>) corresponding to each light shield (<NUM>), and the two second fixed connecting member (<NUM>) are distributed on both sides of the second light emitting hole (<NUM>) along the length direction of the lamp tube (<NUM>),
characterized in that
the first light emitting hole (<NUM>) is a square hole, including two first sides parallel to the length direction of the lamp tube (<NUM>) and two second sides (<NUM>) perpendicular to the length direction of the lamp tube (<NUM>),
the light shield (<NUM>) is provided with two first fixed connecting members (<NUM>) which are respectively engaged with the first side (<NUM>).