Tubular led lamp

Tubular lamp, which have a PCBA board with LEDs, a power source inside the lamp and side covers, which can be removed to replace the PCBA board, characterized because it can house at least one rectangular PCBA board with at least one LED;

• the LEDs which are assembled to each PCBA board in a superficial manner, (employing specialized machinery to make the process repetitive, standardized and systematic not shown because is not part of this invention);
• having a matrix form with a specific number of rows and columns of LEDs;
• the distance from center to center between the LEDs in an axis will be the same, however this will be different from the distance from center to center of the LEDs on the opposite axis;
• the groups of LEDs arranged in group form are separated from the next group by a distance of equal magnitude at the distance between the adjacent groups;
• the base of the LEDs works as a thermal insulator since the material is ceramic;
• the number, type, spacing, temperature color and orientation of the LEDs will increase the performance of the tubular lamp, providing a specific luminescence and luminous density;
• the PCBA boards have at least three orifices which will allow the assembly of a SMT type connector to the lower surface of the PCBA board to be fixedly and permanently soldered to the PCBA board to prevent the SMT type connector from coming loose, or creating false contacts;
• the perpendicular protrusions of the SMT type connector will pass through the PCBA board orifices allowing the SMT type connector to supply the required energy to the LEDs on the PCBA board;
• the PCBA boards will be manufactured in Aluminum and/or other appropriate material and the upper surface will be covered with a chemical compound which will help to prevent short circuits or other electrical problems;
• the number of PCBA boards in each model of the tubular lamp will vary, the number PCBA boards could vary from one up to a permissible maximum set by the type and size of the tubular lamp;
• which will help to provide the required amount of light and thus preventing unnecessary energy expenditures;
• the spaces produced by the absence of PCBA boards will be covered by divider plates made of Aluminum and/or other suitable material;
• the upper surface will be covered with a chemical compound and will have dimensioned identically like the PCBA boards;
• the divider plates will not have any orifices nor connectors, since their only function is to cover the spaces produced by the absence of any of the PCBA boards;
• the metal base is extruded in one anodized piece and covered with colored compound to prevent the corrosion, it is shaped in a semi-oval form since its lower surface is semicircular, but has a flat surface on each side which provides a “U” appearance;
• inside the metal base there are some protrusions in channel shape produced by two parallel protuberances which are part of the flat surfaces at each side of the metal base and protuberances are the rails found in the metal base and project to the inside of the metal base almost from end to end, both the PCBA boards as well as divider plates are slid over the rail to be placed in its final position, allowing to restrict the lateral and vertical movements of both components;
• the metal base on its external surface has several concave protrusions which stretch on its external periphery lengthways of the metal base to provide greater stability, rigidity and the required amount of heat transfer to prevent overheating the LEDs to avoid a premature failure;
• the heat transfer rate will be achieved through conduction and free convection, which are the heat transfer modes that will be employed to transfer heat from the tubular lamp to the environment;
• due to these heat transfer methods, the air will flow over the lamp and will it cool down by removing the excess of heat generated by the LEDs, power source and electrical current which will flow through the conductive pins;
• at each end of the metal base over the semicircular surface there are two rectangular orifices which are separated at 90 degrees from each other, these will help to fasten the side covers through the use of contact notches;
• through the flat surfaces of the metal base the female type contact cavities are found, which have a profile similar to a “L”;
• the cavities go through the metal base from side to side, to reduce placement and location variations in each side of the metal base;
• a power source and a multiple connector are found inside the metal base, which are interconnected by wires and fastening devices;
• the power source has a pair of output wires, which will be connected to the contact cavities of the multiple connector through fastening devices;
• the output wires of the multiple connector will be connected to the SMT type connectors of the PCBA boards through fastening devices, in an independent fashion to supply the necessary current and voltage to each PCBA board;
• the conductive pins will be placed inside the blind orifices and will go through the thru holes of the side cover to restrict the movement and be exposed to the external electricity supply;
• once in its final position, the conductive pins through the output wires will be connected to input wires of the power source;
• once the PCBA boards, multiple connector, power source and side covers with conductive pins are connected among them, and in the final position, the lampshade will be placed over the metal base aligning the contact male protrusions and female type contact cavities, in addition to aligning over the external lateral surfaces of the metal base the anti-dust side walls of the lampshade to begin sliding horizontally the lampshade a predetermined distance with respect to the metal base;
• once the lampshade has been slipped to the final position with respect to the metal base an assembly amongst both components will be created;
• the lampshade will be manufactured with a transparent material which will allow a greater luminous flux coming from the LEDs exit the lamp and light the desired area;
• the lampshade has a semi-oval profile shaped like a “U” as is the case of the metal base;
• the semicircular portion of the lampshade is coupled to the anti-dust side walls which stretch on each side of the lampshade from one end to the next in an intermittent fashion;
• the walls are parallel to the contact male protrusions;
• to allow the existence of the protrusions the anti-dust side walls are interrupted in a systematic fashion along the lampshade;
• the anti-dust side walls allow to restrict lateral movements of the lampshade once is placed in its final position;
• also restrict the entry of any foreign material to the interior of the lamp and allow to position the contact male protrusions over the female type contact cavities to create an assembly amongst both components;
• finally, the orifices generated by the displacement of the lampshade over the metal base will be sealed by using side caps mounted under pressure;
• the side caps permit to cover the orifice caused by the displacement of the lampshade and prevent the disassembly of the tubular lamp when is mounted in the lighting fixture and is fully energized.